BroadcastReceiver 的 onReceive() 接收不到另一个 BroadcastReceiver 发送的广播

Question

我有一个 Service，我从那里发送广播 intent 到 BroadcastReceiver，然后这个广播接收器将它发送回 BroadcastReceiver 在 Service.

代码如下：

private Notification getNotificationAU() {
        mBuilder =
                new NotificationCompat.Builder(getBaseContext())
                        .setSmallIcon(R.mipmap.app_icon_1)
                        .setContentTitle("title")
                        .setContentText(***);

        // for action button
        Intent actionIntent = new Intent(getBaseContext(), BroadcastSender.class);
        PendingIntent actionPendingIntent = PendingIntent
                .getBroadcast(getBaseContext(),
                        0, actionIntent, PendingIntent.FLAG_UPDATE_CURRENT);

        mBuilder.setAutoCancel(true);
        mBuilder.addAction(***, "***", actionPendingIntent);
        return mBuilder.build();
    }

这里是 BroadcastSender.class 代码：

public class BroadcastSender extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {

        Toast.makeText(context, "Broadcast Received by BroadcastSender", Toast.LENGTH_SHORT).show();

        // send back to your class
        Intent newIntent = new Intent();
        newIntent.setAction(context.getString(R.string.broadcast_id));
        context.sendBroadcast(newIntent);
        context.sendBroadcast(new Intent(Intent.ACTION_CLOSE_SYSTEM_DIALOGS));
        Toast.makeText(context, "Broadcast sent back.", Toast.LENGTH_SHORT).show();

    }
}

两个上面的Toasts都显示了。

这是 Service 中的 BroadcastReceiver：

    public class MyBroadcastReceiver extends BroadcastReceiver {

        public MyBroadcastReceiver(){
            super();
        }

        @Override public void onReceive(Context context, Intent intent) {

            Toast.makeText(context, "onReceive() in service called", Toast.LENGTH_SHORT).show();

        if (intent.getAction() != null && intent.getAction().equals(getString(R.string.broadcast_id_2))) {
               ...
               ...
               ...
        } else if (intent.getAction() != null && intent.getAction().equals(getString(R.string.broadcast_id))) {

                // perform the task

        } else {
                Toast.makeText(context, "Intent is null.", Toast.LENGTH_SHORT).show();
        }
        }
    }

这是strings.xml：

<string name="broadcast_id">***</string>

这里是AndroidManifest.xml：

<receiver android:name=".BroadcastSender"/>

问题是 MyBroadcastReceiver 收不到任何广播，即使两者具有相同的广播 ID R.string.broadcast_id。

为什么收不到BroadcastSender.class发送的广播？

请告诉我。

Answer 1

这里的问题是在注册 BroadcastReceiver 时没有添加行 myIntentFilter.addAction(getString(R.string.broadcast_id));。

加行后解决

感谢 Jitesh Mohite and Hasif Seyd 帮助我找出这个小而关键的错误。

BroadcastReceiver 的 onReceive() 接收不到另一个 BroadcastReceiver 发送的广播

BroadcastReceiver's onReceive() is failing to receive the broadcast sent by another BroadcastReceiver

android

broadcastreceiver

android-pendingintent

android-broadcast

android-broadcastreceiver