我希望对屏幕关闭和打开事件进行检测,因此我创建了BroadcastReceiver。只有当应用程序在运行时才能正常工作,当我从任务管理器中删除应用程序时,它就不能正常工作。
活动:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
try{
BroadcastReceiver myrcver = new BootReceiver();
IntentFilter screenStateFilter = new IntentFilter();
screenStateFilter.addAction(Intent.ACTION_SCREEN_ON);
screenStateFilter.addAction(Intent.ACTION_SCREEN_OFF);
registerReceiver(myrcver, screenStateFilter);
}
catch (Exception e){
e.fillInStackTrace();
}
}
清单文件:
<receiver
android:name=".BootReceiver"
android:enabled="true"
android:exported="true"
android:label="BootReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.SCREEN_OFF" />
<action android:name="android.intent.action.SCREEN_ON" />
</intent-filter>
</receiver>
广播接收器:
public class BootReceiver extends BroadcastReceiver {
boolean screenOff;
@Override
public void onReceive(Context context, Intent intent) {
try {
if ("android.intent.action.SCREEN_ON".equals(intent.getAction())) {
if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
screenOff = true;
} else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
screenOff = false;
}
Intent i = new Intent(context, UpdateService.class);
i.putExtra("screen_state", screenOff);
context.startService(i);
}
}
catch (Exception e){
e.fillInStackTrace();
}
}
感谢您的帮助。
提前感谢您的帮助。
registerReceiver()
的正在运行的进程。 - CommonsWare