Question

我正在尝试从IntentService发送广播，但我没有运气。

MainActivity

private void registerBroadcastReceiver() {
    Context context = this;
    IntentFilter filter = new IntentFilter();
    filter.addAction("io.a.spike");

    receiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            System.out.println("*******  received broadcast *******");
        }
    };
    registerReceiver(receiver, filter);
}

IntentService

@Override
protected void onHandleIntent(Intent intent) {
    System.out.println("send broadcast");
    Intent notificationIntent = new Intent();
    notificationIntent.setClass(this, MainActivity.class);
    notificationIntent.setAction("io.a.spike");
    sendBroadcast(notificationIntent);
}

我没有进入registerBroadcastReceiver方法中的 onReceive 方法。任何指导将不胜感激。

谢谢。

Answer 1

要调用您的onReceive()，您必须添加这些-

将您的BroadcastReceiver添加到清单中，通过这种方式- <receiver android:name="YourReceiver"> <intent-filter> <action android:name="YourAction" /> </intent-filter> </receiver>
在您的活动中致电registerReceiver()。另外，不要忘记致电unegisterReceiver()以避免泄漏。

另外，请参考Android BroadcastReceiver without intent filters

Answer 2

您可以使用LocalBroadcastManager

创建实例

LocalBroadcastManager localBroadcastManager = LocalBroadcastManager.getInstance（this）;

注册接收人

localBroadcastManager.registerReceiver（new YourReceiver（），新 IntentFilter（“ YourAction”））;

发送广播

localBroadcastManager.sendBroadcast（intent）;

取消注册接收者

localBroadcastManager.unregisterReceiver（mybroadcast）;

Android：无法接收广播

2 个答案: