获取 Android 中 createChooser 方法的 IntentSender 对象

Question

我想使用新版本的Intent.createChooser 方法，它使用IntentSender。

文档仅说明我可以从 PendingIntent 实例中获取它。就我而言，PendingIntent 似乎没有任何其他用途。

还有其他方法可以获取IntentSender 还是我需要创建PendingIntent？

Answer 1

选择器目标意图不是PendingIntent。例如，在下面的 sn-p 中，我声明了 ACTION_SEND 的意图，类型为 text/plain，这是我对 Intent.createChooser 的目标意图。然后我创建另一个Intent、接收器和一个处理程序PendingIntent，在用户从选择器中选择某些内容后，它将调用我的BroadcastReceiver 的onReceive。

// Set up the broadcast receiver (preferably as a class member)
BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
     @Override
     public void onReceive(Context context, Intent intent) {
         // Unregister self right away
         context.unregisterReceiver(this);

         // Component will hold the package info of the app the user chose
         ComponentName component = intent.getParcelableExtra<ComponentName>(Intent.EXTRA_CHOSEN_COMPONENT);
         // Do something with component
     }
}


Intent intent = new Intent(Intent.ACTION_SEND);
intent.putExtra(Intent.EXTRA_TEXT, "This is my text to send.");
intent.setType("text/plain");

// Use custom action only for your app to receive the broadcast
final String shareAction = "com.yourdomain.share.SHARE_ACTION";
Intent receiver = new Intent(shareAction);
receiver.putExtra("test", "test");
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, receiver, PendingIntent.FLAG_UPDATE_CURRENT);
Intent chooser = Intent.createChooser(intent, "test", pendingIntent.getIntentSender());

// Before firing chooser activity, register the receiver with our custom action from above so that we receive the chosen app
context.registerReceiver(broadcastReceiver, new IntentFilter(SHARE_ACTION));

startActivity(chooser);

编辑：

在BroadcastReceiver 的情况下，信息嵌入在您作为参数获得的意图中。选择其中一个选项后，检索捆绑包的附加内容并使用密钥 Intent.EXTRA_CHOSEN_COMPONENT，您应该能够找到用户选择的内容。

尝试将简单的 Log.d 添加到onReceive

for (String key : intent.getExtras().keySet()) {
    Log.d(getClass().getSimpleName(), " " + intent.getExtras().get(key));
}

在我的例子中，我得到了

ComponentInfo{org.telegram.messenger/org.telegram.ui.LaunchActivity}

对于Telegram 和

ComponentInfo{com.google.android.apps.inbox/com.google.android.apps.bigtop.activities.ComposeMessageActivity}

为InBox

Answer 2

另一种方法。

    /**
     * Receiver to record the chosen component when sharing an Intent.
     */
    static class TargetChosenReceiver extends BroadcastReceiver {
        private static final String EXTRA_RECEIVER_TOKEN = "receiver_token";
        private static final Object LOCK = new Object();

        private static String sTargetChosenReceiveAction;
        private static TargetChosenReceiver sLastRegisteredReceiver;

        static boolean isSupported() {
            return Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP_MR1;
        }

        @TargetApi(Build.VERSION_CODES.LOLLIPOP_MR1)
        static void sendChooserIntent(Activity activity, Intent sharingIntent) {
            synchronized (LOCK) {
                if (sTargetChosenReceiveAction == null) {
                    sTargetChosenReceiveAction = activity.getPackageName() + "/"
                            + TargetChosenReceiver.class.getName() + "_ACTION";
                }
                Context context = activity.getApplicationContext();
                if (sLastRegisteredReceiver != null) {
                    context.unregisterReceiver(sLastRegisteredReceiver);
                }
                sLastRegisteredReceiver = new TargetChosenReceiver();
                context.registerReceiver(
                        sLastRegisteredReceiver, new IntentFilter(sTargetChosenReceiveAction));
            }

            Intent intent = new Intent(sTargetChosenReceiveAction);
            intent.setPackage(activity.getPackageName());
            intent.putExtra(EXTRA_RECEIVER_TOKEN, sLastRegisteredReceiver.hashCode());
            final PendingIntent callback = PendingIntent.getBroadcast(activity, 0, intent,
                    PendingIntent.FLAG_CANCEL_CURRENT | PendingIntent.FLAG_ONE_SHOT);
            Intent chooserIntent = Intent.createChooser(sharingIntent,
                    activity.getString(R.string.share_link_chooser_title),
                    callback.getIntentSender());
            activity.startActivity(chooserIntent);
        }

        @Override
        public void onReceive(Context context, Intent intent) {
            synchronized (LOCK) {
                if (sLastRegisteredReceiver != this) return;
                context.getApplicationContext().unregisterReceiver(sLastRegisteredReceiver);
                sLastRegisteredReceiver = null;
            }
            if (!intent.hasExtra(EXTRA_RECEIVER_TOKEN)
                    || intent.getIntExtra(EXTRA_RECEIVER_TOKEN, 0) != this.hashCode()) {
                return;
            }

            ComponentName target = intent.getParcelableExtra(Intent.EXTRA_CHOSEN_COMPONENT);
            if (target != null) {
                setLastShareComponentName(context, target);
            }
        }
    }