https://source.android.com/ 
/*
 * Copyright (C) 2013 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.printservice;

import android.annotation.NonNull;
import android.annotation.SystemApi;
import android.content.ComponentName;
import android.content.Context;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.pm.ResolveInfo;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.content.res.XmlResourceParser;
import android.os.Parcel;
import android.os.Parcelable;
import android.util.AttributeSet;
import android.util.Log;
import android.util.Xml;

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;

import java.io.IOException;


This class describes a PrintService. A print service knows how to communicate with one or more printers over one or more protocols and exposes printers for use by the applications via the platform print APIs. 
See Also:
@hide
/**
 * This class describes a {@link PrintService}. A print service knows
 * how to communicate with one or more printers over one or more protocols
 * and exposes printers for use by the applications via the platform print
 * APIs.
 *
 * @see PrintService
 * @see android.print.PrintManager
 *
 * @hide
 */
@SystemApi
public final class PrintServiceInfo implements Parcelable {

    private static final String LOG_TAG = PrintServiceInfo.class.getSimpleName();

    private static final String TAG_PRINT_SERVICE = "print-service";

    private final String mId;

    private boolean mIsEnabled;

    private final ResolveInfo mResolveInfo;

    private final String mSettingsActivityName;

    private final String mAddPrintersActivityName;

    private final String mAdvancedPrintOptionsActivityName;

    
Creates a new instance.

@hide
/**
     * Creates a new instance.
     *
     * @hide
     */
    public PrintServiceInfo(Parcel parcel) {
        mId = parcel.readString();
        mIsEnabled = parcel.readByte() != 0;
        mResolveInfo = parcel.readParcelable(null);
        mSettingsActivityName = parcel.readString();
        mAddPrintersActivityName = parcel.readString();
        mAdvancedPrintOptionsActivityName = parcel.readString();
    }

    
Creates a new instance.

Params:
  • resolveInfo – The service resolve info.
  • settingsActivityName – Optional settings activity name.
  • addPrintersActivityName – Optional add printers activity name.
  • advancedPrintOptionsActivityName – Optional advanced print options activity.
@hide
/**
     * Creates a new instance.
     *
     * @param resolveInfo The service resolve info.
     * @param settingsActivityName Optional settings activity name.
     * @param addPrintersActivityName Optional add printers activity name.
     * @param advancedPrintOptionsActivityName Optional advanced print options activity.
     *
     * @hide
     */
    public PrintServiceInfo(ResolveInfo resolveInfo, String settingsActivityName,
            String addPrintersActivityName, String advancedPrintOptionsActivityName) {
        mId = new ComponentName(resolveInfo.serviceInfo.packageName,
                resolveInfo.serviceInfo.name).flattenToString();
        mResolveInfo = resolveInfo;
        mSettingsActivityName = settingsActivityName;
        mAddPrintersActivityName = addPrintersActivityName;
        mAdvancedPrintOptionsActivityName = advancedPrintOptionsActivityName;
    }

    
Return the component name for this print service.

Returns:The component name for this print service.
/**
     * Return the component name for this print service.
     *
     * @return The component name for this print service.
     */
    public @NonNull ComponentName getComponentName() {
        return new ComponentName(mResolveInfo.serviceInfo.packageName,
                mResolveInfo.serviceInfo.name);
    }

    
Creates a new instance.

Params:
  • context – Context for accessing resources.
  • resolveInfo – The service resolve info.
Returns:The created instance.
@hide
/**
     * Creates a new instance.
     *
     * @param context Context for accessing resources.
     * @param resolveInfo The service resolve info.
     * @return The created instance.
     *
     * @hide
     */
    public static PrintServiceInfo create(Context context, ResolveInfo resolveInfo) {
        String settingsActivityName = null;
        String addPrintersActivityName = null;
        String advancedPrintOptionsActivityName = null;

        XmlResourceParser parser = null;
        PackageManager packageManager = context.getPackageManager();
        parser = resolveInfo.serviceInfo.loadXmlMetaData(packageManager,
                PrintService.SERVICE_META_DATA);
        if (parser != null) {
            try {
                int type = 0;
                while (type != XmlPullParser.END_DOCUMENT && type != XmlPullParser.START_TAG) {
                    type = parser.next();
                }

                String nodeName = parser.getName();
                if (!TAG_PRINT_SERVICE.equals(nodeName)) {
                    Log.e(LOG_TAG, "Ignoring meta-data that does not start with "
                            + TAG_PRINT_SERVICE + " tag");
                } else {
                    Resources resources = packageManager.getResourcesForApplication(
                            resolveInfo.serviceInfo.applicationInfo);
                    AttributeSet allAttributes = Xml.asAttributeSet(parser);
                    TypedArray attributes = resources.obtainAttributes(allAttributes,
                            com.android.internal.R.styleable.PrintService);

                    settingsActivityName = attributes.getString(
                            com.android.internal.R.styleable.PrintService_settingsActivity);

                    addPrintersActivityName = attributes.getString(
                            com.android.internal.R.styleable.PrintService_addPrintersActivity);

                    advancedPrintOptionsActivityName = attributes.getString(com.android.internal
                            .R.styleable.PrintService_advancedPrintOptionsActivity);

                    attributes.recycle();
                }
            } catch (IOException ioe) {
                Log.w(LOG_TAG, "Error reading meta-data:" + ioe);
            } catch (XmlPullParserException xppe) {
                Log.w(LOG_TAG, "Error reading meta-data:" + xppe);
            } catch (NameNotFoundException e) {
                Log.e(LOG_TAG, "Unable to load resources for: "
                        + resolveInfo.serviceInfo.packageName);
            } finally {
                if (parser != null) {
                    parser.close();
                }
            }
        }

        return new PrintServiceInfo(resolveInfo, settingsActivityName,
                addPrintersActivityName, advancedPrintOptionsActivityName);
    }

    
The accessibility service id.


Generated by the system.



Returns:The id.
@hide
/**
     * The accessibility service id.
     * <p>
     * <strong>Generated by the system.</strong>
     * </p>
     *
     * @return The id.
     *
     * @hide
     */
    public String getId() {
        return mId;
    }

    
If the service was enabled when it was read from the system.

Returns:The id.
@hide
/**
     * If the service was enabled when it was read from the system.
     *
     * @return The id.
     *
     * @hide
     */
    public boolean isEnabled() {
        return mIsEnabled;
    }

    
Mark a service as enabled or not

Params:
  • isEnabled – If the service should be marked as enabled.
@hide
/**
     * Mark a service as enabled or not
     *
     * @param isEnabled If the service should be marked as enabled.
     *
     * @hide
     */
    public void setIsEnabled(boolean isEnabled) {
        mIsEnabled = isEnabled;
    }

    
The service ResolveInfo. 
Returns:The info.
@hide
/**
     * The service {@link ResolveInfo}.
     *
     * @return The info.
     *
     * @hide
     */
    public ResolveInfo getResolveInfo() {
        return mResolveInfo;
    }

    
The settings activity name.


Statically set from meta-data.



Returns:The settings activity name.
@hide
/**
     * The settings activity name.
     * <p>
     * <strong>Statically set from
     * {@link PrintService#SERVICE_META_DATA meta-data}.</strong>
     * </p>
     *
     * @return The settings activity name.
     *
     * @hide
     */
    public String getSettingsActivityName() {
        return mSettingsActivityName;
    }

    
The add printers activity name.


Statically set from meta-data.



Returns:The add printers activity name.
@hide
/**
     * The add printers activity name.
     * <p>
     * <strong>Statically set from
     * {@link PrintService#SERVICE_META_DATA meta-data}.</strong>
     * </p>
     *
     * @return The add printers activity name.
     *
     * @hide
     */
    public String getAddPrintersActivityName() {
        return mAddPrintersActivityName;
    }

    
The advanced print options activity name.


Statically set from meta-data.



Returns:The advanced print options activity name.
@hide
/**
     * The advanced print options activity name.
     * <p>
     * <strong>Statically set from
     * {@link PrintService#SERVICE_META_DATA meta-data}.</strong>
     * </p>
     *
     * @return The advanced print options activity name.
     *
     * @hide
     */
    public String getAdvancedOptionsActivityName() {
        return mAdvancedPrintOptionsActivityName;
    }

    
{@inheritDoc}

/**
     * {@inheritDoc}
     */
    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(Parcel parcel, int flagz) {
        parcel.writeString(mId);
        parcel.writeByte((byte)(mIsEnabled ? 1 : 0));
        parcel.writeParcelable(mResolveInfo, 0);
        parcel.writeString(mSettingsActivityName);
        parcel.writeString(mAddPrintersActivityName);
        parcel.writeString(mAdvancedPrintOptionsActivityName);
    }

    @Override
    public int hashCode() {
        return 31 + ((mId == null) ? 0 : mId.hashCode());
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        PrintServiceInfo other = (PrintServiceInfo) obj;
        if (mId == null) {
            if (other.mId != null) {
                return false;
            }
        } else if (!mId.equals(other.mId)) {
            return false;
        }
        return true;
    }

    @Override
    public String toString() {
        StringBuilder builder = new StringBuilder();
        builder.append("PrintServiceInfo{");
        builder.append("id=").append(mId);
        builder.append("isEnabled=").append(mIsEnabled);
        builder.append(", resolveInfo=").append(mResolveInfo);
        builder.append(", settingsActivityName=").append(mSettingsActivityName);
        builder.append(", addPrintersActivityName=").append(mAddPrintersActivityName);
        builder.append(", advancedPrintOptionsActivityName=")
                .append(mAdvancedPrintOptionsActivityName);
        builder.append("}");
        return builder.toString();
    }

    public static final Parcelable.Creator<PrintServiceInfo> CREATOR =
            new Parcelable.Creator<PrintServiceInfo>() {
        @Override
        public PrintServiceInfo createFromParcel(Parcel parcel) {
            return new PrintServiceInfo(parcel);
        }

        @Override
        public PrintServiceInfo[] newArray(int size) {
            return new PrintServiceInfo[size];
        }
    };
}