android/android-9.0.0_r35 : android/hardware/input/InputManager.java

InputManager
https://source.android.com/
/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.hardware.input;

import android.annotation.IntDef;
import android.annotation.SdkConstant;
import android.annotation.SdkConstant.SdkConstantType;
import android.annotation.SystemService;
import android.app.IInputForwarder;
import android.content.Context;
import android.media.AudioAttributes;
import android.os.Binder;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.os.Message;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.ServiceManager.ServiceNotFoundException;
import android.os.SystemClock;
import android.os.VibrationEffect;
import android.os.Vibrator;
import android.provider.Settings;
import android.provider.Settings.SettingNotFoundException;
import android.util.Log;
import android.util.SparseArray;
import android.view.InputDevice;
import android.view.InputEvent;
import android.view.MotionEvent;
import android.view.PointerIcon;

import com.android.internal.os.SomeArgs;

import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.util.ArrayList;
import java.util.List;

Provides information about input devices and available key layouts.
/**
 * Provides information about input devices and available key layouts.
 */
@SystemService(Context.INPUT_SERVICE)
public final class InputManager {
    private static final String TAG = "InputManager";
    private static final boolean DEBUG = false;

    private static final int MSG_DEVICE_ADDED = 1;
    private static final int MSG_DEVICE_REMOVED = 2;
    private static final int MSG_DEVICE_CHANGED = 3;

    private static InputManager sInstance;

    private final IInputManager mIm;

    // Guarded by mInputDevicesLock
    private final Object mInputDevicesLock = new Object();
    private SparseArray<InputDevice> mInputDevices;
    private InputDevicesChangedListener mInputDevicesChangedListener;
    private final ArrayList<InputDeviceListenerDelegate> mInputDeviceListeners =
            new ArrayList<InputDeviceListenerDelegate>();

    // Guarded by mTabletModeLock
    private final Object mTabletModeLock = new Object();
    private TabletModeChangedListener mTabletModeChangedListener;
    private List<OnTabletModeChangedListenerDelegate> mOnTabletModeChangedListeners;

    Broadcast Action: Query available keyboard layouts.

The input manager service locates available keyboard layouts
by querying broadcast receivers that are registered for this action.
An application can offer additional keyboard layouts to the user
by declaring a suitable broadcast receiver in its manifest.

Here is an example broadcast receiver declaration that an application
might include in its AndroidManifest.xml to advertise keyboard layouts.
The meta-data specifies a resource that contains a description of each keyboard
layout that is provided by the application.

<receiver android:name=".InputDeviceReceiver"
        android:label="@string/keyboard_layouts_label">
    <intent-filter>
        <action android:name="android.hardware.input.action.QUERY_KEYBOARD_LAYOUTS" />
    </intent-filter>
    <meta-data android:name="android.hardware.input.metadata.KEYBOARD_LAYOUTS"
            android:resource="@xml/keyboard_layouts" />
</receiver>


In the above example, the @xml/keyboard_layouts resource refers to
an XML resource whose root element is <keyboard-layouts> that
contains zero or more <keyboard-layout> elements.
Each <keyboard-layout> element specifies the name, label, and location
of a key character map for a particular keyboard layout.  The label on the receiver
is used to name the collection of keyboard layouts provided by this receiver in the
keyboard layout settings.

<?xml version="1.0" encoding="utf-8"?>
<keyboard-layouts xmlns:android="http://schemas.android.com/apk/res/android">
    <keyboard-layout android:name="keyboard_layout_english_us"
            android:label="@string/keyboard_layout_english_us_label"
            android:keyboardLayout="@raw/keyboard_layout_english_us" />
</keyboard-layouts>


The android:name attribute specifies an identifier by which
the keyboard layout will be known in the package.
The android:label attribute specifies a human-readable descriptive
label to describe the keyboard layout in the user interface, such as "English (US)".
The android:keyboardLayout attribute refers to a

key character map resource that defines the keyboard layout.

/**
     * Broadcast Action: Query available keyboard layouts.
     * <p>
     * The input manager service locates available keyboard layouts
     * by querying broadcast receivers that are registered for this action.
     * An application can offer additional keyboard layouts to the user
     * by declaring a suitable broadcast receiver in its manifest.
     * </p><p>
     * Here is an example broadcast receiver declaration that an application
     * might include in its AndroidManifest.xml to advertise keyboard layouts.
     * The meta-data specifies a resource that contains a description of each keyboard
     * layout that is provided by the application.
     * <pre><code>
     * &lt;receiver android:name=".InputDeviceReceiver"
     *         android:label="@string/keyboard_layouts_label">
     *     &lt;intent-filter>
     *         &lt;action android:name="android.hardware.input.action.QUERY_KEYBOARD_LAYOUTS" />
     *     &lt;/intent-filter>
     *     &lt;meta-data android:name="android.hardware.input.metadata.KEYBOARD_LAYOUTS"
     *             android:resource="@xml/keyboard_layouts" />
     * &lt;/receiver>
     * </code></pre>
     * </p><p>
     * In the above example, the <code>@xml/keyboard_layouts</code> resource refers to
     * an XML resource whose root element is <code>&lt;keyboard-layouts></code> that
     * contains zero or more <code>&lt;keyboard-layout></code> elements.
     * Each <code>&lt;keyboard-layout></code> element specifies the name, label, and location
     * of a key character map for a particular keyboard layout.  The label on the receiver
     * is used to name the collection of keyboard layouts provided by this receiver in the
     * keyboard layout settings.
     * <pre><code>
     * &lt;?xml version="1.0" encoding="utf-8"?>
     * &lt;keyboard-layouts xmlns:android="http://schemas.android.com/apk/res/android">
     *     &lt;keyboard-layout android:name="keyboard_layout_english_us"
     *             android:label="@string/keyboard_layout_english_us_label"
     *             android:keyboardLayout="@raw/keyboard_layout_english_us" />
     * &lt;/keyboard-layouts>
     * </pre></code>
     * </p><p>
     * The <code>android:name</code> attribute specifies an identifier by which
     * the keyboard layout will be known in the package.
     * The <code>android:label</code> attribute specifies a human-readable descriptive
     * label to describe the keyboard layout in the user interface, such as "English (US)".
     * The <code>android:keyboardLayout</code> attribute refers to a
     * <a href="http://source.android.com/tech/input/key-character-map-files.html">
     * key character map</a> resource that defines the keyboard layout.
     * </p>
     */
    @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
    public static final String ACTION_QUERY_KEYBOARD_LAYOUTS =
            "android.hardware.input.action.QUERY_KEYBOARD_LAYOUTS";

    Metadata Key: Keyboard layout metadata associated with ACTION_QUERY_KEYBOARD_LAYOUTS. 
Specifies the resource id of a XML resource that describes the keyboard
layouts that are provided by the application.

/**
     * Metadata Key: Keyboard layout metadata associated with
     * {@link #ACTION_QUERY_KEYBOARD_LAYOUTS}.
     * <p>
     * Specifies the resource id of a XML resource that describes the keyboard
     * layouts that are provided by the application.
     * </p>
     */
    public static final String META_DATA_KEYBOARD_LAYOUTS =
            "android.hardware.input.metadata.KEYBOARD_LAYOUTS";

    Pointer Speed: The minimum (slowest) pointer speed (-7).
@hide /**
     * Pointer Speed: The minimum (slowest) pointer speed (-7).
     * @hide
     */
    public static final int MIN_POINTER_SPEED = -7;

    Pointer Speed: The maximum (fastest) pointer speed (7).
@hide /**
     * Pointer Speed: The maximum (fastest) pointer speed (7).
     * @hide
     */
    public static final int MAX_POINTER_SPEED = 7;

    Pointer Speed: The default pointer speed (0).
@hide /**
     * Pointer Speed: The default pointer speed (0).
     * @hide
     */
    public static final int DEFAULT_POINTER_SPEED = 0;

    Input Event Injection Synchronization Mode: None.
Never blocks.  Injection is asynchronous and is assumed always to be successful.
@hide /**
     * Input Event Injection Synchronization Mode: None.
     * Never blocks.  Injection is asynchronous and is assumed always to be successful.
     * @hide
     */
    public static final int INJECT_INPUT_EVENT_MODE_ASYNC = 0; // see InputDispatcher.h

    Input Event Injection Synchronization Mode: Wait for result.
Waits for previous events to be dispatched so that the input dispatcher can
determine whether input event injection will be permitted based on the current
input focus.  Does not wait for the input event to finish being handled
by the application.
@hide /**
     * Input Event Injection Synchronization Mode: Wait for result.
     * Waits for previous events to be dispatched so that the input dispatcher can
     * determine whether input event injection will be permitted based on the current
     * input focus.  Does not wait for the input event to finish being handled
     * by the application.
     * @hide
     */
    public static final int INJECT_INPUT_EVENT_MODE_WAIT_FOR_RESULT = 1;  // see InputDispatcher.h

    Input Event Injection Synchronization Mode: Wait for finish.
Waits for the event to be delivered to the application and handled.
@hide /**
     * Input Event Injection Synchronization Mode: Wait for finish.
     * Waits for the event to be delivered to the application and handled.
     * @hide
     */
    public static final int INJECT_INPUT_EVENT_MODE_WAIT_FOR_FINISH = 2;  // see InputDispatcher.h

    @hide /** @hide */
    @Retention(RetentionPolicy.SOURCE)
    @IntDef(prefix = { "SWITCH_STATE_" }, value = {
            SWITCH_STATE_UNKNOWN,
            SWITCH_STATE_OFF,
            SWITCH_STATE_ON
    })
    public @interface SwitchState {}

    Switch State: Unknown.
The system has yet to report a valid value for the switch.
@hide /**
     * Switch State: Unknown.
     *
     * The system has yet to report a valid value for the switch.
     * @hide
     */
    public static final int SWITCH_STATE_UNKNOWN = -1;

    Switch State: Off.
@hide /**
     * Switch State: Off.
     * @hide
     */
    public static final int SWITCH_STATE_OFF = 0;

    Switch State: On.
@hide /**
     * Switch State: On.
     * @hide
     */
    public static final int SWITCH_STATE_ON = 1;

    private InputManager(IInputManager im) {
        mIm = im;
    }

    Gets an instance of the input manager.
Returns: The input manager instance.
@hide /**
     * Gets an instance of the input manager.
     *
     * @return The input manager instance.
     *
     * @hide
     */
    public static InputManager getInstance() {
        synchronized (InputManager.class) {
            if (sInstance == null) {
                try {
                    sInstance = new InputManager(IInputManager.Stub
                            .asInterface(ServiceManager.getServiceOrThrow(Context.INPUT_SERVICE)));
                } catch (ServiceNotFoundException e) {
                    throw new IllegalStateException(e);
                }
            }
            return sInstance;
        }
    }

    Gets information about the input device with the specified id.
Params: id – The device id.
Returns: The input device or null if not found./**
     * Gets information about the input device with the specified id.
     * @param id The device id.
     * @return The input device or null if not found.
     */
    public InputDevice getInputDevice(int id) {
        synchronized (mInputDevicesLock) {
            populateInputDevicesLocked();

            int index = mInputDevices.indexOfKey(id);
            if (index < 0) {
                return null;
            }

            InputDevice inputDevice = mInputDevices.valueAt(index);
            if (inputDevice == null) {
                try {
                    inputDevice = mIm.getInputDevice(id);
                } catch (RemoteException ex) {
                    throw ex.rethrowFromSystemServer();
                }
                if (inputDevice != null) {
                    mInputDevices.setValueAt(index, inputDevice);
                }
            }
            return inputDevice;
        }
    }

    Gets information about the input device with the specified descriptor.
Params: descriptor – The input device descriptor.
Returns: The input device or null if not found.
@hide /**
     * Gets information about the input device with the specified descriptor.
     * @param descriptor The input device descriptor.
     * @return The input device or null if not found.
     * @hide
     */
    public InputDevice getInputDeviceByDescriptor(String descriptor) {
        if (descriptor == null) {
            throw new IllegalArgumentException("descriptor must not be null.");
        }

        synchronized (mInputDevicesLock) {
            populateInputDevicesLocked();

            int numDevices = mInputDevices.size();
            for (int i = 0; i < numDevices; i++) {
                InputDevice inputDevice = mInputDevices.valueAt(i);
                if (inputDevice == null) {
                    int id = mInputDevices.keyAt(i);
                    try {
                        inputDevice = mIm.getInputDevice(id);
                    } catch (RemoteException ex) {
                        throw ex.rethrowFromSystemServer();
                    }
                    if (inputDevice == null) {
                        continue;
                    }
                    mInputDevices.setValueAt(i, inputDevice);
                }
                if (descriptor.equals(inputDevice.getDescriptor())) {
                    return inputDevice;
                }
            }
            return null;
        }
    }

    Gets the ids of all input devices in the system.
Returns: The input device ids./**
     * Gets the ids of all input devices in the system.
     * @return The input device ids.
     */
    public int[] getInputDeviceIds() {
        synchronized (mInputDevicesLock) {
            populateInputDevicesLocked();

            final int count = mInputDevices.size();
            final int[] ids = new int[count];
            for (int i = 0; i < count; i++) {
                ids[i] = mInputDevices.keyAt(i);
            }
            return ids;
        }
    }

    Returns true if an input device is enabled. Should return true for most
situations. Some system apps may disable an input device, for
example to prevent unwanted touch events.
Params: id – The input device Id.
@hide /**
     * Returns true if an input device is enabled. Should return true for most
     * situations. Some system apps may disable an input device, for
     * example to prevent unwanted touch events.
     *
     * @param id The input device Id.
     *
     * @hide
     */
    public boolean isInputDeviceEnabled(int id) {
        try {
            return mIm.isInputDeviceEnabled(id);
        } catch (RemoteException ex) {
            Log.w(TAG, "Could not check enabled status of input device with id = " + id);
            throw ex.rethrowFromSystemServer();
        }
    }

    Enables an InputDevice.
 Requires DISABLE_INPUT_DEVICE. 
Params: id – The input device Id.
@hide /**
     * Enables an InputDevice.
     * <p>
     * Requires {@link android.Manifest.permissions.DISABLE_INPUT_DEVICE}.
     * </p>
     *
     * @param id The input device Id.
     *
     * @hide
     */
    public void enableInputDevice(int id) {
        try {
            mIm.enableInputDevice(id);
        } catch (RemoteException ex) {
            Log.w(TAG, "Could not enable input device with id = " + id);
            throw ex.rethrowFromSystemServer();
        }
    }

    Disables an InputDevice.
 Requires DISABLE_INPUT_DEVICE. 
Params: id – The input device Id.
@hide /**
     * Disables an InputDevice.
     * <p>
     * Requires {@link android.Manifest.permissions.DISABLE_INPUT_DEVICE}.
     * </p>
     *
     * @param id The input device Id.
     *
     * @hide
     */
    public void disableInputDevice(int id) {
        try {
            mIm.disableInputDevice(id);
        } catch (RemoteException ex) {
            Log.w(TAG, "Could not disable input device with id = " + id);
            throw ex.rethrowFromSystemServer();
        }
    }

    Registers an input device listener to receive notifications about when
input devices are added, removed or changed.
Params: listener – The listener to register.
handler – The handler on which the listener should be invoked, or null
if the listener should be invoked on the calling thread's looper.
See Also: unregisterInputDeviceListener/**
     * Registers an input device listener to receive notifications about when
     * input devices are added, removed or changed.
     *
     * @param listener The listener to register.
     * @param handler The handler on which the listener should be invoked, or null
     * if the listener should be invoked on the calling thread's looper.
     *
     * @see #unregisterInputDeviceListener
     */
    public void registerInputDeviceListener(InputDeviceListener listener, Handler handler) {
        if (listener == null) {
            throw new IllegalArgumentException("listener must not be null");
        }

        synchronized (mInputDevicesLock) {
            populateInputDevicesLocked();
            int index = findInputDeviceListenerLocked(listener);
            if (index < 0) {
                mInputDeviceListeners.add(new InputDeviceListenerDelegate(listener, handler));
            }
        }
    }

    Unregisters an input device listener.
Params: listener – The listener to unregister.
See Also: registerInputDeviceListener/**
     * Unregisters an input device listener.
     *
     * @param listener The listener to unregister.
     *
     * @see #registerInputDeviceListener
     */
    public void unregisterInputDeviceListener(InputDeviceListener listener) {
        if (listener == null) {
            throw new IllegalArgumentException("listener must not be null");
        }

        synchronized (mInputDevicesLock) {
            int index = findInputDeviceListenerLocked(listener);
            if (index >= 0) {
                InputDeviceListenerDelegate d = mInputDeviceListeners.get(index);
                d.removeCallbacksAndMessages(null);
                mInputDeviceListeners.remove(index);
            }
        }
    }

    private int findInputDeviceListenerLocked(InputDeviceListener listener) {
        final int numListeners = mInputDeviceListeners.size();
        for (int i = 0; i < numListeners; i++) {
            if (mInputDeviceListeners.get(i).mListener == listener) {
                return i;
            }
        }
        return -1;
    }

    Queries whether the device is in tablet mode.
Returns: The tablet switch state which is one of SWITCH_STATE_UNKNOWN, SWITCH_STATE_OFF or SWITCH_STATE_ON.
@hide /**
     * Queries whether the device is in tablet mode.
     *
     * @return The tablet switch state which is one of {@link #SWITCH_STATE_UNKNOWN},
     * {@link #SWITCH_STATE_OFF} or {@link #SWITCH_STATE_ON}.
     * @hide
     */
    @SwitchState
    public int isInTabletMode() {
        try {
            return mIm.isInTabletMode();
        } catch (RemoteException ex) {
            throw ex.rethrowFromSystemServer();
        }
    }

    Register a tablet mode changed listener.
Params: listener – The listener to register.
handler – The handler on which the listener should be invoked, or null
if the listener should be invoked on the calling thread's looper.
@hide /**
     * Register a tablet mode changed listener.
     *
     * @param listener The listener to register.
     * @param handler The handler on which the listener should be invoked, or null
     * if the listener should be invoked on the calling thread's looper.
     * @hide
     */
    public void registerOnTabletModeChangedListener(
            OnTabletModeChangedListener listener, Handler handler) {
        if (listener == null) {
            throw new IllegalArgumentException("listener must not be null");
        }
        synchronized (mTabletModeLock) {
            if (mOnTabletModeChangedListeners == null) {
                initializeTabletModeListenerLocked();
            }
            int idx = findOnTabletModeChangedListenerLocked(listener);
            if (idx < 0) {
                OnTabletModeChangedListenerDelegate d =
                    new OnTabletModeChangedListenerDelegate(listener, handler);
                mOnTabletModeChangedListeners.add(d);
            }
        }
    }

    Unregister a tablet mode changed listener.
Params: listener – The listener to unregister.
@hide /**
     * Unregister a tablet mode changed listener.
     *
     * @param listener The listener to unregister.
     * @hide
     */
    public void unregisterOnTabletModeChangedListener(OnTabletModeChangedListener listener) {
        if (listener == null) {
            throw new IllegalArgumentException("listener must not be null");
        }
        synchronized (mTabletModeLock) {
            int idx = findOnTabletModeChangedListenerLocked(listener);
            if (idx >= 0) {
                OnTabletModeChangedListenerDelegate d = mOnTabletModeChangedListeners.remove(idx);
                d.removeCallbacksAndMessages(null);
            }
        }
    }

    private void initializeTabletModeListenerLocked() {
        final TabletModeChangedListener listener = new TabletModeChangedListener();
        try {
            mIm.registerTabletModeChangedListener(listener);
        } catch (RemoteException ex) {
            throw ex.rethrowFromSystemServer();
        }
        mTabletModeChangedListener = listener;
        mOnTabletModeChangedListeners = new ArrayList<>();
    }

    private int findOnTabletModeChangedListenerLocked(OnTabletModeChangedListener listener) {
        final int N = mOnTabletModeChangedListeners.size();
        for (int i = 0; i < N; i++) {
            if (mOnTabletModeChangedListeners.get(i).mListener == listener) {
                return i;
            }
        }
        return -1;
    }

    Gets information about all supported keyboard layouts.
 The input manager consults the built-in keyboard layouts as well as all keyboard layouts advertised by applications using a ACTION_QUERY_KEYBOARD_LAYOUTS broadcast receiver. 
Returns: A list of all supported keyboard layouts.
@hide /**
     * Gets information about all supported keyboard layouts.
     * <p>
     * The input manager consults the built-in keyboard layouts as well
     * as all keyboard layouts advertised by applications using a
     * {@link #ACTION_QUERY_KEYBOARD_LAYOUTS} broadcast receiver.
     * </p>
     *
     * @return A list of all supported keyboard layouts.
     *
     * @hide
     */
    public KeyboardLayout[] getKeyboardLayouts() {
        try {
            return mIm.getKeyboardLayouts();
        } catch (RemoteException ex) {
            throw ex.rethrowFromSystemServer();
        }
    }

    Gets information about all supported keyboard layouts appropriate
for a specific input device.
 The input manager consults the built-in keyboard layouts as well as all keyboard layouts advertised by applications using a ACTION_QUERY_KEYBOARD_LAYOUTS broadcast receiver. 
Returns: A list of all supported keyboard layouts for a specific
input device.
@hide /**
     * Gets information about all supported keyboard layouts appropriate
     * for a specific input device.
     * <p>
     * The input manager consults the built-in keyboard layouts as well
     * as all keyboard layouts advertised by applications using a
     * {@link #ACTION_QUERY_KEYBOARD_LAYOUTS} broadcast receiver.
     * </p>
     *
     * @return A list of all supported keyboard layouts for a specific
     * input device.
     *
     * @hide
     */
    public KeyboardLayout[] getKeyboardLayoutsForInputDevice(InputDeviceIdentifier identifier) {
        try {
            return mIm.getKeyboardLayoutsForInputDevice(identifier);
        } catch (RemoteException ex) {
            throw ex.rethrowFromSystemServer();
        }
    }

    Gets the keyboard layout with the specified descriptor.
Params: keyboardLayoutDescriptor – The keyboard layout descriptor, as returned by KeyboardLayout.getDescriptor().
Returns: The keyboard layout, or null if it could not be loaded.
@hide /**
     * Gets the keyboard layout with the specified descriptor.
     *
     * @param keyboardLayoutDescriptor The keyboard layout descriptor, as returned by
     * {@link KeyboardLayout#getDescriptor()}.
     * @return The keyboard layout, or null if it could not be loaded.
     *
     * @hide
     */
    public KeyboardLayout getKeyboardLayout(String keyboardLayoutDescriptor) {
        if (keyboardLayoutDescriptor == null) {
            throw new IllegalArgumentException("keyboardLayoutDescriptor must not be null");
        }

        try {
            return mIm.getKeyboardLayout(keyboardLayoutDescriptor);
        } catch (RemoteException ex) {
            throw ex.rethrowFromSystemServer();
        }
    }

    Gets the current keyboard layout descriptor for the specified input
device.
Params: identifier – Identifier for the input device
Returns: The keyboard layout descriptor, or null if no keyboard layout has
        been set.
@hide /**
     * Gets the current keyboard layout descriptor for the specified input
     * device.
     *
     * @param identifier Identifier for the input device
     * @return The keyboard layout descriptor, or null if no keyboard layout has
     *         been set.
     * @hide
     */
    public String getCurrentKeyboardLayoutForInputDevice(InputDeviceIdentifier identifier) {
        try {
            return mIm.getCurrentKeyboardLayoutForInputDevice(identifier);
        } catch (RemoteException ex) {
            throw ex.rethrowFromSystemServer();
        }
    }

    Sets the current keyboard layout descriptor for the specified input
device.

This method may have the side-effect of causing the input device in
question to be reconfigured.

Params: identifier – The identifier for the input device.
keyboardLayoutDescriptor – The keyboard layout descriptor to use,
           must not be null.
@hide /**
     * Sets the current keyboard layout descriptor for the specified input
     * device.
     * <p>
     * This method may have the side-effect of causing the input device in
     * question to be reconfigured.
     * </p>
     *
     * @param identifier The identifier for the input device.
     * @param keyboardLayoutDescriptor The keyboard layout descriptor to use,
     *            must not be null.
     * @hide
     */
    public void setCurrentKeyboardLayoutForInputDevice(InputDeviceIdentifier identifier,
            String keyboardLayoutDescriptor) {
        if (identifier == null) {
            throw new IllegalArgumentException("identifier must not be null");
        }
        if (keyboardLayoutDescriptor == null) {
            throw new IllegalArgumentException("keyboardLayoutDescriptor must not be null");
        }

        try {
            mIm.setCurrentKeyboardLayoutForInputDevice(identifier,
                    keyboardLayoutDescriptor);
        } catch (RemoteException ex) {
            throw ex.rethrowFromSystemServer();
        }
    }

    Gets all keyboard layout descriptors that are enabled for the specified
input device.
Params: identifier – The identifier for the input device.
Returns: The keyboard layout descriptors.
@hide /**
     * Gets all keyboard layout descriptors that are enabled for the specified
     * input device.
     *
     * @param identifier The identifier for the input device.
     * @return The keyboard layout descriptors.
     * @hide
     */
    public String[] getEnabledKeyboardLayoutsForInputDevice(InputDeviceIdentifier identifier) {
        if (identifier == null) {
            throw new IllegalArgumentException("inputDeviceDescriptor must not be null");
        }

        try {
            return mIm.getEnabledKeyboardLayoutsForInputDevice(identifier);
        } catch (RemoteException ex) {
            throw ex.rethrowFromSystemServer();
        }
    }

    Adds the keyboard layout descriptor for the specified input device.

This method may have the side-effect of causing the input device in
question to be reconfigured.

Params: identifier – The identifier for the input device.
keyboardLayoutDescriptor – The descriptor of the keyboard layout to
           add.
@hide /**
     * Adds the keyboard layout descriptor for the specified input device.
     * <p>
     * This method may have the side-effect of causing the input device in
     * question to be reconfigured.
     * </p>
     *
     * @param identifier The identifier for the input device.
     * @param keyboardLayoutDescriptor The descriptor of the keyboard layout to
     *            add.
     * @hide
     */
    public void addKeyboardLayoutForInputDevice(InputDeviceIdentifier identifier,
            String keyboardLayoutDescriptor) {
        if (identifier == null) {
            throw new IllegalArgumentException("inputDeviceDescriptor must not be null");
        }
        if (keyboardLayoutDescriptor == null) {
            throw new IllegalArgumentException("keyboardLayoutDescriptor must not be null");
        }

        try {
            mIm.addKeyboardLayoutForInputDevice(identifier, keyboardLayoutDescriptor);
        } catch (RemoteException ex) {
            throw ex.rethrowFromSystemServer();
        }
    }

    Removes the keyboard layout descriptor for the specified input device.

This method may have the side-effect of causing the input device in
question to be reconfigured.

Params: identifier – The identifier for the input device.
keyboardLayoutDescriptor – The descriptor of the keyboard layout to
           remove.
@hide /**
     * Removes the keyboard layout descriptor for the specified input device.
     * <p>
     * This method may have the side-effect of causing the input device in
     * question to be reconfigured.
     * </p>
     *
     * @param identifier The identifier for the input device.
     * @param keyboardLayoutDescriptor The descriptor of the keyboard layout to
     *            remove.
     * @hide
     */
    public void removeKeyboardLayoutForInputDevice(InputDeviceIdentifier identifier,
            String keyboardLayoutDescriptor) {
        if (identifier == null) {
            throw new IllegalArgumentException("inputDeviceDescriptor must not be null");
        }
        if (keyboardLayoutDescriptor == null) {
            throw new IllegalArgumentException("keyboardLayoutDescriptor must not be null");
        }

        try {
            mIm.removeKeyboardLayoutForInputDevice(identifier, keyboardLayoutDescriptor);
        } catch (RemoteException ex) {
            throw ex.rethrowFromSystemServer();
        }
    }

    Gets the TouchCalibration applied to the specified input device's coordinates.
Params: inputDeviceDescriptor – The input device descriptor.
Returns: The TouchCalibration currently assigned for use with the given
input device. If none is set, an identity TouchCalibration is returned.
@hide /**
     * Gets the TouchCalibration applied to the specified input device's coordinates.
     *
     * @param inputDeviceDescriptor The input device descriptor.
     * @return The TouchCalibration currently assigned for use with the given
     * input device. If none is set, an identity TouchCalibration is returned.
     *
     * @hide
     */
    public TouchCalibration getTouchCalibration(String inputDeviceDescriptor, int surfaceRotation) {
        try {
            return mIm.getTouchCalibrationForInputDevice(inputDeviceDescriptor, surfaceRotation);
        } catch (RemoteException ex) {
            throw ex.rethrowFromSystemServer();
        }
    }

    Sets the TouchCalibration to apply to the specified input device's coordinates.
 This method may have the side-effect of causing the input device in question to be reconfigured. Requires SET_INPUT_CALIBRATION. 
Params: inputDeviceDescriptor – The input device descriptor.
calibration – The calibration to be applied
@hide /**
     * Sets the TouchCalibration to apply to the specified input device's coordinates.
     * <p>
     * This method may have the side-effect of causing the input device in question
     * to be reconfigured. Requires {@link android.Manifest.permissions.SET_INPUT_CALIBRATION}.
     * </p>
     *
     * @param inputDeviceDescriptor The input device descriptor.
     * @param calibration The calibration to be applied
     *
     * @hide
     */
    public void setTouchCalibration(String inputDeviceDescriptor, int surfaceRotation,
            TouchCalibration calibration) {
        try {
            mIm.setTouchCalibrationForInputDevice(inputDeviceDescriptor, surfaceRotation, calibration);
        } catch (RemoteException ex) {
            throw ex.rethrowFromSystemServer();
        }
    }

    Gets the mouse pointer speed.
 Only returns the permanent mouse pointer speed. Ignores any temporary pointer speed set by tryPointerSpeed. 
Params: context – The application context.
Returns: The pointer speed as a value between MIN_POINTER_SPEED and MAX_POINTER_SPEED, or the default value DEFAULT_POINTER_SPEED.
@hide /**
     * Gets the mouse pointer speed.
     * <p>
     * Only returns the permanent mouse pointer speed.  Ignores any temporary pointer
     * speed set by {@link #tryPointerSpeed}.
     * </p>
     *
     * @param context The application context.
     * @return The pointer speed as a value between {@link #MIN_POINTER_SPEED} and
     * {@link #MAX_POINTER_SPEED}, or the default value {@link #DEFAULT_POINTER_SPEED}.
     *
     * @hide
     */
    public int getPointerSpeed(Context context) {
        int speed = DEFAULT_POINTER_SPEED;
        try {
            speed = Settings.System.getInt(context.getContentResolver(),
                    Settings.System.POINTER_SPEED);
        } catch (SettingNotFoundException snfe) {
        }
        return speed;
    }

    Sets the mouse pointer speed.
 Requires WRITE_SETTINGS. 
Params: context – The application context.
speed – The pointer speed as a value between MIN_POINTER_SPEED and MAX_POINTER_SPEED, or the default value DEFAULT_POINTER_SPEED.
@hide /**
     * Sets the mouse pointer speed.
     * <p>
     * Requires {@link android.Manifest.permissions.WRITE_SETTINGS}.
     * </p>
     *
     * @param context The application context.
     * @param speed The pointer speed as a value between {@link #MIN_POINTER_SPEED} and
     * {@link #MAX_POINTER_SPEED}, or the default value {@link #DEFAULT_POINTER_SPEED}.
     *
     * @hide
     */
    public void setPointerSpeed(Context context, int speed) {
        if (speed < MIN_POINTER_SPEED || speed > MAX_POINTER_SPEED) {
            throw new IllegalArgumentException("speed out of range");
        }

        Settings.System.putInt(context.getContentResolver(),
                Settings.System.POINTER_SPEED, speed);
    }

    Changes the mouse pointer speed temporarily, but does not save the setting.
 Requires SET_POINTER_SPEED. 
Params: speed – The pointer speed as a value between MIN_POINTER_SPEED and MAX_POINTER_SPEED, or the default value DEFAULT_POINTER_SPEED.
@hide /**
     * Changes the mouse pointer speed temporarily, but does not save the setting.
     * <p>
     * Requires {@link android.Manifest.permission.SET_POINTER_SPEED}.
     * </p>
     *
     * @param speed The pointer speed as a value between {@link #MIN_POINTER_SPEED} and
     * {@link #MAX_POINTER_SPEED}, or the default value {@link #DEFAULT_POINTER_SPEED}.
     *
     * @hide
     */
    public void tryPointerSpeed(int speed) {
        if (speed < MIN_POINTER_SPEED || speed > MAX_POINTER_SPEED) {
            throw new IllegalArgumentException("speed out of range");
        }

        try {
            mIm.tryPointerSpeed(speed);
        } catch (RemoteException ex) {
            throw ex.rethrowFromSystemServer();
        }
    }

    Queries the framework about whether any physical keys exist on the
any keyboard attached to the device that are capable of producing the given
array of key codes.
Params: keyCodes – The array of key codes to query.
Returns: A new array of the same size as the key codes array whose elements
are set to true if at least one attached keyboard supports the corresponding key code
at the same index in the key codes array.
@hide /**
     * Queries the framework about whether any physical keys exist on the
     * any keyboard attached to the device that are capable of producing the given
     * array of key codes.
     *
     * @param keyCodes The array of key codes to query.
     * @return A new array of the same size as the key codes array whose elements
     * are set to true if at least one attached keyboard supports the corresponding key code
     * at the same index in the key codes array.
     *
     * @hide
     */
    public boolean[] deviceHasKeys(int[] keyCodes) {
        return deviceHasKeys(-1, keyCodes);
    }

    Queries the framework about whether any physical keys exist on the
any keyboard attached to the device that are capable of producing the given
array of key codes.
Params: id – The id of the device to query.
keyCodes – The array of key codes to query.
Returns: A new array of the same size as the key codes array whose elements are set to true
if the given device could produce the corresponding key code at the same index in the key
codes array.
@hide /**
     * Queries the framework about whether any physical keys exist on the
     * any keyboard attached to the device that are capable of producing the given
     * array of key codes.
     *
     * @param id The id of the device to query.
     * @param keyCodes The array of key codes to query.
     * @return A new array of the same size as the key codes array whose elements are set to true
     * if the given device could produce the corresponding key code at the same index in the key
     * codes array.
     *
     * @hide
     */
    public boolean[] deviceHasKeys(int id, int[] keyCodes) {
        boolean[] ret = new boolean[keyCodes.length];
        try {
            mIm.hasKeys(id, InputDevice.SOURCE_ANY, keyCodes, ret);
        } catch (RemoteException e) {
            throw e.rethrowFromSystemServer();
        }
        return ret;
    }


    Injects an input event into the event system on behalf of an application.
The synchronization mode determines whether the method blocks while waiting for
input injection to proceed.
 Requires INJECT_EVENTS to inject into windows that are owned by other applications. 

Make sure you correctly set the event time and input source of the event
before calling this method.

Params: event – The event to inject.
mode – The synchronization mode. One of: INJECT_INPUT_EVENT_MODE_ASYNC, INJECT_INPUT_EVENT_MODE_WAIT_FOR_RESULT, or INJECT_INPUT_EVENT_MODE_WAIT_FOR_FINISH.
Returns: True if input event injection succeeded.
@hide /**
     * Injects an input event into the event system on behalf of an application.
     * The synchronization mode determines whether the method blocks while waiting for
     * input injection to proceed.
     * <p>
     * Requires {@link android.Manifest.permission.INJECT_EVENTS} to inject into
     * windows that are owned by other applications.
     * </p><p>
     * Make sure you correctly set the event time and input source of the event
     * before calling this method.
     * </p>
     *
     * @param event The event to inject.
     * @param mode The synchronization mode.  One of:
     * {@link #INJECT_INPUT_EVENT_MODE_ASYNC},
     * {@link #INJECT_INPUT_EVENT_MODE_WAIT_FOR_RESULT}, or
     * {@link #INJECT_INPUT_EVENT_MODE_WAIT_FOR_FINISH}.
     * @return True if input event injection succeeded.
     *
     * @hide
     */
    public boolean injectInputEvent(InputEvent event, int mode) {
        if (event == null) {
            throw new IllegalArgumentException("event must not be null");
        }
        if (mode != INJECT_INPUT_EVENT_MODE_ASYNC
                && mode != INJECT_INPUT_EVENT_MODE_WAIT_FOR_FINISH
                && mode != INJECT_INPUT_EVENT_MODE_WAIT_FOR_RESULT) {
            throw new IllegalArgumentException("mode is invalid");
        }

        try {
            return mIm.injectInputEvent(event, mode);
        } catch (RemoteException ex) {
            throw ex.rethrowFromSystemServer();
        }
    }

    Changes the mouse pointer's icon shape into the specified id.
Params: iconId – The id of the pointer graphic, as a value between TYPE_ARROW and TYPE_GRABBING.
@hide /**
     * Changes the mouse pointer's icon shape into the specified id.
     *
     * @param iconId The id of the pointer graphic, as a value between
     * {@link PointerIcon.TYPE_ARROW} and {@link PointerIcon.TYPE_GRABBING}.
     *
     * @hide
     */
    public void setPointerIconType(int iconId) {
        try {
            mIm.setPointerIconType(iconId);
        } catch (RemoteException ex) {
            throw ex.rethrowFromSystemServer();
        }
    }

    @hide /** @hide */
    public void setCustomPointerIcon(PointerIcon icon) {
        try {
            mIm.setCustomPointerIcon(icon);
        } catch (RemoteException ex) {
            throw ex.rethrowFromSystemServer();
        }
    }

    Request or release pointer capture.
 When in capturing mode, the pointer icon disappears and all mouse events are dispatched to the window which has requested the capture. Relative position changes are available through MotionEvent.getX and MotionEvent.getY. 
Params: enable – true when requesting pointer capture, false when releasing.
@hide /**
     * Request or release pointer capture.
     * <p>
     * When in capturing mode, the pointer icon disappears and all mouse events are dispatched to
     * the window which has requested the capture. Relative position changes are available through
     * {@link MotionEvent#getX} and {@link MotionEvent#getY}.
     *
     * @param enable true when requesting pointer capture, false when releasing.
     *
     * @hide
     */
    public void requestPointerCapture(IBinder windowToken, boolean enable) {
        try {
            mIm.requestPointerCapture(windowToken, enable);
        } catch (RemoteException ex) {
            throw ex.rethrowFromSystemServer();
        }
    }


    Create an IInputForwarder targeted to provided display. INJECT_EVENTS permission is required to call this method. 
Params: displayId – Id of the target display where input events should be forwarded.
                 Display must exist and must be owned by the caller.
Returns: The forwarder instance.
@hide /**
     * Create an {@link IInputForwarder} targeted to provided display.
     * {@link android.Manifest.permission.INJECT_EVENTS} permission is required to call this method.
     *
     * @param displayId Id of the target display where input events should be forwarded.
     *                  Display must exist and must be owned by the caller.
     * @return The forwarder instance.
     *
     * @hide
     */
    public IInputForwarder createInputForwarder(int displayId) {
        try {
            return mIm.createInputForwarder(displayId);
        } catch (RemoteException ex) {
            throw ex.rethrowFromSystemServer();
        }
    }

    private void populateInputDevicesLocked() {
        if (mInputDevicesChangedListener == null) {
            final InputDevicesChangedListener listener = new InputDevicesChangedListener();
            try {
                mIm.registerInputDevicesChangedListener(listener);
            } catch (RemoteException ex) {
                throw ex.rethrowFromSystemServer();
            }
            mInputDevicesChangedListener = listener;
        }

        if (mInputDevices == null) {
            final int[] ids;
            try {
                ids = mIm.getInputDeviceIds();
            } catch (RemoteException ex) {
                throw ex.rethrowFromSystemServer();
            }

            mInputDevices = new SparseArray<InputDevice>();
            for (int i = 0; i < ids.length; i++) {
                mInputDevices.put(ids[i], null);
            }
        }
    }

    private void onInputDevicesChanged(int[] deviceIdAndGeneration) {
        if (DEBUG) {
            Log.d(TAG, "Received input devices changed.");
        }

        synchronized (mInputDevicesLock) {
            for (int i = mInputDevices.size(); --i > 0; ) {
                final int deviceId = mInputDevices.keyAt(i);
                if (!containsDeviceId(deviceIdAndGeneration, deviceId)) {
                    if (DEBUG) {
                        Log.d(TAG, "Device removed: " + deviceId);
                    }
                    mInputDevices.removeAt(i);
                    sendMessageToInputDeviceListenersLocked(MSG_DEVICE_REMOVED, deviceId);
                }
            }

            for (int i = 0; i < deviceIdAndGeneration.length; i += 2) {
                final int deviceId = deviceIdAndGeneration[i];
                int index = mInputDevices.indexOfKey(deviceId);
                if (index >= 0) {
                    final InputDevice device = mInputDevices.valueAt(index);
                    if (device != null) {
                        final int generation = deviceIdAndGeneration[i + 1];
                        if (device.getGeneration() != generation) {
                            if (DEBUG) {
                                Log.d(TAG, "Device changed: " + deviceId);
                            }
                            mInputDevices.setValueAt(index, null);
                            sendMessageToInputDeviceListenersLocked(MSG_DEVICE_CHANGED, deviceId);
                        }
                    }
                } else {
                    if (DEBUG) {
                        Log.d(TAG, "Device added: " + deviceId);
                    }
                    mInputDevices.put(deviceId, null);
                    sendMessageToInputDeviceListenersLocked(MSG_DEVICE_ADDED, deviceId);
                }
            }
        }
    }

    private void sendMessageToInputDeviceListenersLocked(int what, int deviceId) {
        final int numListeners = mInputDeviceListeners.size();
        for (int i = 0; i < numListeners; i++) {
            InputDeviceListenerDelegate listener = mInputDeviceListeners.get(i);
            listener.sendMessage(listener.obtainMessage(what, deviceId, 0));
        }
    }

    private static boolean containsDeviceId(int[] deviceIdAndGeneration, int deviceId) {
        for (int i = 0; i < deviceIdAndGeneration.length; i += 2) {
            if (deviceIdAndGeneration[i] == deviceId) {
                return true;
            }
        }
        return false;
    }


    private void onTabletModeChanged(long whenNanos, boolean inTabletMode) {
        if (DEBUG) {
            Log.d(TAG, "Received tablet mode changed: "
                    + "whenNanos=" + whenNanos + ", inTabletMode=" + inTabletMode);
        }
        synchronized (mTabletModeLock) {
            final int N = mOnTabletModeChangedListeners.size();
            for (int i = 0; i < N; i++) {
                OnTabletModeChangedListenerDelegate listener =
                        mOnTabletModeChangedListeners.get(i);
                listener.sendTabletModeChanged(whenNanos, inTabletMode);
            }
        }
    }

    Gets a vibrator service associated with an input device, assuming it has one.
Returns: The vibrator, never null.
@hide /**
     * Gets a vibrator service associated with an input device, assuming it has one.
     * @return The vibrator, never null.
     * @hide
     */
    public Vibrator getInputDeviceVibrator(int deviceId) {
        return new InputDeviceVibrator(deviceId);
    }

    Listens for changes in input devices.
/**
     * Listens for changes in input devices.
     */
    public interface InputDeviceListener {
        Called whenever an input device has been added to the system. Use InputManager.getInputDevice to get more information about the device. 
Params: deviceId – The id of the input device that was added./**
         * Called whenever an input device has been added to the system.
         * Use {@link InputManager#getInputDevice} to get more information about the device.
         *
         * @param deviceId The id of the input device that was added.
         */
        void onInputDeviceAdded(int deviceId);

        Called whenever an input device has been removed from the system.
Params: deviceId – The id of the input device that was removed./**
         * Called whenever an input device has been removed from the system.
         *
         * @param deviceId The id of the input device that was removed.
         */
        void onInputDeviceRemoved(int deviceId);

        Called whenever the properties of an input device have changed since they were last queried. Use InputManager.getInputDevice to get a fresh InputDevice object with the new properties. 
Params: deviceId – The id of the input device that changed./**
         * Called whenever the properties of an input device have changed since they
         * were last queried.  Use {@link InputManager#getInputDevice} to get
         * a fresh {@link InputDevice} object with the new properties.
         *
         * @param deviceId The id of the input device that changed.
         */
        void onInputDeviceChanged(int deviceId);
    }

    private final class InputDevicesChangedListener extends IInputDevicesChangedListener.Stub {
        @Override
        public void onInputDevicesChanged(int[] deviceIdAndGeneration) throws RemoteException {
            InputManager.this.onInputDevicesChanged(deviceIdAndGeneration);
        }
    }

    private static final class InputDeviceListenerDelegate extends Handler {
        public final InputDeviceListener mListener;

        public InputDeviceListenerDelegate(InputDeviceListener listener, Handler handler) {
            super(handler != null ? handler.getLooper() : Looper.myLooper());
            mListener = listener;
        }

        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
                case MSG_DEVICE_ADDED:
                    mListener.onInputDeviceAdded(msg.arg1);
                    break;
                case MSG_DEVICE_REMOVED:
                    mListener.onInputDeviceRemoved(msg.arg1);
                    break;
                case MSG_DEVICE_CHANGED:
                    mListener.onInputDeviceChanged(msg.arg1);
                    break;
            }
        }
    }

    @hide /** @hide */
    public interface OnTabletModeChangedListener {
        Called whenever the device goes into or comes out of tablet mode.
Params: whenNanos – The time at which the device transitioned into or out of tablet mode. This is given in nanoseconds in the SystemClock.uptimeMillis time base./**
         * Called whenever the device goes into or comes out of tablet mode.
         *
         * @param whenNanos The time at which the device transitioned into or
         * out of tablet mode. This is given in nanoseconds in the
         * {@link SystemClock#uptimeMillis} time base.
         */
        void onTabletModeChanged(long whenNanos, boolean inTabletMode);
    }

    private final class TabletModeChangedListener extends ITabletModeChangedListener.Stub {
        @Override
        public void onTabletModeChanged(long whenNanos, boolean inTabletMode) {
            InputManager.this.onTabletModeChanged(whenNanos, inTabletMode);
        }
    }

    private static final class OnTabletModeChangedListenerDelegate extends Handler {
        private static final int MSG_TABLET_MODE_CHANGED = 0;

        public final OnTabletModeChangedListener mListener;

        public OnTabletModeChangedListenerDelegate(
                OnTabletModeChangedListener listener, Handler handler) {
            super(handler != null ? handler.getLooper() : Looper.myLooper());
            mListener = listener;
        }

        public void sendTabletModeChanged(long whenNanos, boolean inTabletMode) {
            SomeArgs args = SomeArgs.obtain();
            args.argi1 = (int) (whenNanos & 0xFFFFFFFF);
            args.argi2 = (int) (whenNanos >> 32);
            args.arg1 = (Boolean) inTabletMode;
            obtainMessage(MSG_TABLET_MODE_CHANGED, args).sendToTarget();
        }

        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
                case MSG_TABLET_MODE_CHANGED:
                    SomeArgs args = (SomeArgs) msg.obj;
                    long whenNanos = (args.argi1 & 0xFFFFFFFFl) | ((long) args.argi2 << 32);
                    boolean inTabletMode = (boolean) args.arg1;
                    mListener.onTabletModeChanged(whenNanos, inTabletMode);
                    break;
            }
        }
    }

    private final class InputDeviceVibrator extends Vibrator {
        private final int mDeviceId;
        private final Binder mToken;

        public InputDeviceVibrator(int deviceId) {
            mDeviceId = deviceId;
            mToken = new Binder();
        }

        @Override
        public boolean hasVibrator() {
            return true;
        }

        @Override
        public boolean hasAmplitudeControl() {
            return false;
        }

        @hide /**
         * @hide
         */
        @Override
        public void vibrate(int uid, String opPkg,
                VibrationEffect effect, AudioAttributes attributes) {
            long[] pattern;
            int repeat;
            if (effect instanceof VibrationEffect.OneShot) {
                VibrationEffect.OneShot oneShot = (VibrationEffect.OneShot) effect;
                pattern = new long[] { 0, oneShot.getDuration() };
                repeat = -1;
            } else if (effect instanceof VibrationEffect.Waveform) {
                VibrationEffect.Waveform waveform = (VibrationEffect.Waveform) effect;
                pattern = waveform.getTimings();
                repeat = waveform.getRepeatIndex();
            } else {
                // TODO: Add support for prebaked effects
                Log.w(TAG, "Pre-baked effects aren't supported on input devices");
                return;
            }

            try {
                mIm.vibrate(mDeviceId, pattern, repeat, mToken);
            } catch (RemoteException ex) {
                throw ex.rethrowFromSystemServer();
            }
        }

        @Override
        public void cancel() {
            try {
                mIm.cancelVibrate(mDeviceId, mToken);
            } catch (RemoteException ex) {
                throw ex.rethrowFromSystemServer();
            }
        }
    }
}
Params:	id – The device id.
Returns:	The input device or null if not found.
Params:	descriptor – The input device descriptor.
Returns:	The input device or null if not found.
@hide
Params:	listener – The listener to register. handler – The handler on which the listener should be invoked, or null if the listener should be invoked on the calling thread's looper.
See Also:	unregisterInputDeviceListener
Params:	listener – The listener to unregister.
See Also:	registerInputDeviceListener
Returns:	The tablet switch state which is one of `SWITCH_STATE_UNKNOWN`, `SWITCH_STATE_OFF` or `SWITCH_STATE_ON`.
@hide
Returns:	A list of all supported keyboard layouts for a specific input device.
@hide
Params:	keyboardLayoutDescriptor – The keyboard layout descriptor, as returned by `KeyboardLayout.getDescriptor()`.
Returns:	The keyboard layout, or null if it could not be loaded.
@hide
Params:	identifier – Identifier for the input device
Returns:	The keyboard layout descriptor, or null if no keyboard layout has been set.
@hide
Params:	identifier – The identifier for the input device. keyboardLayoutDescriptor – The keyboard layout descriptor to use, must not be null.
@hide
Params:	inputDeviceDescriptor – The input device descriptor.
Returns:	The TouchCalibration currently assigned for use with the given input device. If none is set, an identity TouchCalibration is returned.
@hide
Params:	context – The application context.
Returns:	The pointer speed as a value between `MIN_POINTER_SPEED` and `MAX_POINTER_SPEED`, or the default value `DEFAULT_POINTER_SPEED`.
@hide
Params:	context – The application context. speed – The pointer speed as a value between `MIN_POINTER_SPEED` and `MAX_POINTER_SPEED`, or the default value `DEFAULT_POINTER_SPEED`.
@hide
Params:	speed – The pointer speed as a value between `MIN_POINTER_SPEED` and `MAX_POINTER_SPEED`, or the default value `DEFAULT_POINTER_SPEED`.
@hide
Params:	keyCodes – The array of key codes to query.
Returns:	A new array of the same size as the key codes array whose elements are set to true if at least one attached keyboard supports the corresponding key code at the same index in the key codes array.
@hide
Params:	id – The id of the device to query. keyCodes – The array of key codes to query.
Returns:	A new array of the same size as the key codes array whose elements are set to true if the given device could produce the corresponding key code at the same index in the key codes array.
@hide
Params:	event – The event to inject. mode – The synchronization mode. One of: `INJECT_INPUT_EVENT_MODE_ASYNC`, `INJECT_INPUT_EVENT_MODE_WAIT_FOR_RESULT`, or `INJECT_INPUT_EVENT_MODE_WAIT_FOR_FINISH`.
Returns:	True if input event injection succeeded.
@hide
Params:	iconId – The id of the pointer graphic, as a value between `TYPE_ARROW` and `TYPE_GRABBING`.
@hide
Params:	enable – true when requesting pointer capture, false when releasing.
@hide
Params:	displayId – Id of the target display where input events should be forwarded. Display must exist and must be owned by the caller.
Returns:	The forwarder instance.
@hide
/

android/ android-9.0.0_r35/ android/hardware/input/InputManager.java
