Android Open Source - Pocket-AndroidWear-SDK Pocket Util

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright (C) 2014 Read It Later Inc. (Pocket)
 */*from w ww  . java 2s  .  c o m*/
 * 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 com.pocket.util;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;

/**
 * Helper methods for saving to Pocket with an Intent.
 */
public class PocketUtil {
  
  private static final int UTIL_VERSION = 1;
  
  private static final String[] POCKET_PACKAGE_NAMES = new String[]{
    "com.ideashower.readitlater.pro",
    "com.pocket.cn",
    "com.pocket.ru",
    "com.pocket.corgi"
  };
  
  private static final String EXTRA_SOURCE_PACKAGE = "source";
  private static final String EXTRA_TWEET_STATUS_ID = "tweetStatusId";
  private static final String EXTRA_VERSION = "utilVersion";
  
  /**
   * Creates a new Intent that will save a url to the user's Pocket account.
   *  
   * @param url A url starting with http:// or https://
   * @param tweetStatusId Optional. If the url is saved from a tweet, pass its status id to attribute the save to that tweet. Otherwise pass null.
   * @param context 
   * @return The Activity Intent that can be started to save the url, or null if Pocket is not installed.
   * 
   * @see #isPocketInstalled(Context)
   * @see #installPocket(Activity)
   */
  protected static Intent newAddToPocketIntent(String url, String tweetStatusId, Context context) {
    String pocketPackageName = getPocketPackageName(context);
    if (pocketPackageName == null) {
      return null; // Pocket not installed
    }
    
    Intent intent = new Intent(Intent.ACTION_SEND);
    intent.setPackage(pocketPackageName);
    intent.setType("text/plain");
    
    intent.putExtra(Intent.EXTRA_TEXT, url);
    if (tweetStatusId != null && tweetStatusId.length() > 0) {
      intent.putExtra(EXTRA_TWEET_STATUS_ID, tweetStatusId);
    }
    intent.putExtra(EXTRA_SOURCE_PACKAGE, context.getPackageName());
    intent.putExtra(EXTRA_VERSION, UTIL_VERSION);
    
    return intent;
  }
  
  /**
   * Returns true if Pocket is installed on this device.
   * @see #installPocket(Activity)
   */
  protected static boolean isPocketInstalled(Context context) {
    return getPocketPackageName(context) != null;
  }
  
  /**
   * This looks for all possible Pocket versions and returns the package name of one if it is installed.
   * Otherwise returns null if Pocket is not installed.
   */
  private static String getPocketPackageName(Context context) {
    for (String pname : POCKET_PACKAGE_NAMES) {
      if (isAppInstalled(context, pname)) {
        return pname;
      }
    }
    return null;
  }
  
  private static boolean isAppInstalled(Context context, String packageName) {
    PackageManager pm = context.getPackageManager();
    PackageInfo info;
    try {
      info = pm.getPackageInfo(packageName, 0);
    } catch (NameNotFoundException e) {
      info = null;
    }
    
    return info != null;
  }
  
}

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