尝试计算 phone 被解锁的次数

Question

几个月前我厌倦了这个但是失败了。
我想做的是计算用户解锁他的 phone 的次数并将其显示在屏幕上，但每次我解锁 phone.[=26= 时我都会得到模糊的数字] 我的代码如下。
我主要activityoncreate

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    startService(new Intent(getApplicationContext(), LockService.class));
    TextView ticker;
    ticker = (TextView) findViewById(R.id.textView);
    ticker.setText(String.valueOf(Tick.tick));
    Log.e("but this is awesome ", String.valueOf(Tick.tick));
}

服务class

public class LockService extends Service {
@Override
public IBinder onBind(Intent intent) {
    return null;
}

@Override
public void onCreate() {
    super.onCreate();
}

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    final IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
    filter.addAction(Intent.ACTION_SCREEN_OFF);
    filter.addAction(Intent.ACTION_USER_PRESENT);
    final BroadcastReceiver mReceiver = new ScreenReceiver();
    registerReceiver(mReceiver, filter);
    return super.onStartCommand(intent, flags, startId);
}
public class LocalBinder extends Binder {
    LockService getService() {
        return LockService.this;
    }
}

} BroadcastReceiver Class

public class ScreenReceiver extends BroadcastReceiver {
public static boolean wasScreenOn = true;


    @Override
    public void onReceive(final Context context, final Intent intent) {
        Log.e("test", "onReceive");
        if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
            wasScreenOn = false;
            Log.e("test", "wasScreenOn" + wasScreenOn);
        } else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
            wasScreenOn = true;
            Log.e("test", "wasScreenOn and user present" + wasScreenOn);
        } else if (intent.getAction().equals(Intent.ACTION_USER_PRESENT)) {
            Tick.tick ++;
            Log.e("test", "userpresent" + Tick.tick);
        }
    }

}

请帮助我理解我做错了什么

Answer 1

我相信发生的事情是这样的：每次打开 activity 时，您都会调用启动服务。因此，即使您的服务已经运行，也会调用 onStartCommand。这样，您可以多次注册您的广播，然后当您解锁设备时，您的计数器会随着每次注册接收者而递增。您应该执行以下选项之一： 1. 在您的清单中定义您的接收者，这样您就不必每次都处理注册和注销。 2. 在您的服务 onCreate 而不是 onStartCommand 中注册您的接收者。另外，确保你在你的服务 onDestroy 中注销它们。

尝试计算 phone 被解锁的次数

Trying to count number of times the phone is unlocked

java

android

android-broadcastreceiver