public class PoService extends Service{
int mStartMode; // indicates how to behave if the service is killed
IBinder mBinder; // interface for clients that bind
boolean mAllowRebind; // indicates whether onRebind should be used
private ScreenStatusReceiver mReceiver;
@Override
public void onCreate() {
final IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
filter.addAction(Intent.ACTION_SCREEN_OFF);
mReceiver = new ScreenStatusReceiver();
registerReceiver(mReceiver, filter);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// The service is starting, due to a call to startService()
return mStartMode;
}
@Override
public IBinder onBind(Intent intent) {
// A client is binding to the service with bindService()
return mBinder;
}
@Override
public boolean onUnbind(Intent intent) {
// All clients have unbound with unbindService()
return mAllowRebind;
}
@Override
public void onRebind(Intent intent) {
// A client is binding to the service with bindService(),
// after onUnbind() has already been called
}
@Override
public void onDestroy() {
// The service is no longer used and is being destroyed
if (mReceiver != null) {
unregisterReceiver(mReceiver);
mReceiver = null;
}
}
}
BroadcastReceiver
public class ScreenStatusReceiver extends BroadcastReceiver {
public static boolean wasScreenOn = true;
@Override
public void onReceive(final Context context, final Intent intent) {
if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
wasScreenOn = false;
} else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
wasScreenOn = true;
}
}
}
哥們你想在什麼情況下監聽螢幕狀態啊? ?
1.如果是要一直監聽就得開啟服務
Manifest中配置
Service
BroadcastReceiver
日誌
2.如果不是,給你舉個在Activity中取得螢幕狀態的栗子
Activity
日誌
這部分程式碼放到了github
Service中使用廣播和Activity一樣,onCreate中註冊,onDestroy解綁就是了。只是
Intent.ACTION_SCREEN_ON
与Intent.ACTION_SCREEN_OFF
這兩個廣播比較特殊,不能靜態註冊,只能動態註冊,即,你在manifest中註冊這個廣播監聽是不管用的,這就是為什麼你自己寫的demo打印不出來log的原因。