android - Broadcast receiver 不能在 Android4.0 模拟器上工作

Question

我创建了一个只包含一个接收器的项目。部分代码如下:

<receiver android:name=".InputReceive" android.enabled = "true">
    <intent-filter>
    <action android:name="com.myproject.BackButton" />
</intent-filter>
</receiver>

public class InputReceive extends BroadcastReceiver {

@Override
public void onReceive(Context arg0, Intent arg1) {
    String action = arg1.getAction();
    if(action.equals("com.myproject.BackButton")){
        back();
    }
}

private void back(){
    Log.e("wwq", "back");
}

当我在cmd中运行命令时

adb shell am broadcast -a com.myproject.BackButton

logcat中没有出现'back'之类的日志。接收器无响应。日志如下:

12-12 16:33:05.431: W/ActivityManager(98): Timeout of broadcast BroadcastRecord{415fcd58 com.android.server.action.NETWORK_STATS_POLL} - receiver=android.app.LoadedApk$ReceiverDispatcher$InnerReceiver@4135ff18, started 10051ms ago
12-12 16:33:05.431: W/ActivityManager(98): Receiver during timeout: BroadcastFilter{41360160 ReceiverList{413600e8 98 system/1000 local:4135ff18}}
12-12 16:33:15.609: W/ActivityManager(98): finishReceiver called but no pending broadcasts

此问题仅发生在 Android 4.0 模拟器上。谁知道 Android 4.0 中广播接收器发生了什么变化。非常感谢。

Answer 1

安装您的应用程序后，用户需要手动启动您的 Activity，然后您的任何 BroadcastReceivers 才会生效，从 Android 3.1 开始。

另外，请注意它是 android:enabled，而不是 android.enabled。