java在计时器触发后唤醒Android屏幕

Question

我如何让计时器触发一种方法来唤醒安卓设备的屏幕

我插入以下内容：

final Window win = getWindow();
win.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
          | WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD); 
win.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
          | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);

进入

@Override
protected void onCreate(Bundle savedInstanceState) {

方法

此外，我在用户单击按钮后制作了一个计时器，该按钮运行以下程序：

final int interval = 3000; // 3 Seconds
Handler handler = new Handler();
Runnable runnable = new Runnable(){
      public void run() {
           Toast.makeText(getApplicationContext(), "Here", Toast.LENGTH_SHORT).show();


                }
            };
handler.postAtTime(runnable, System.currentTimeMillis()+interval);
handler.postDelayed(runnable, interval);

我希望能够单击Android设备的电源按钮，使其在3秒钟的时间间隔内休眠，并在启动run（）后将其唤醒。 我要调用什么来触发屏幕打开

Answer 1

此方法还会立即打开屏幕：

PowerManager powerManager = (PowerManager) getSystemService(Context.POWER_SERVICE);
PowerManager.WakeLock TempWakeLock = powerManager.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK|PowerManager.ACQUIRE_CAUSES_WAKEUP, "TempWakeLock");
TempWakeLock.acquire();
TempWakeLock.release();

Answer 2

尝试添加到onCreate（）：

        PowerManager pm = (PowerManager) getApplicationContext().getSystemService(Context.POWER_SERVICE);
        WakeLock wakeLock = pm.newWakeLock((PowerManager.SCREEN_BRIGHT_WAKE_LOCK |    PowerManager.FULL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP), "TAG");
        wakeLock.acquire();

要释放屏幕锁定，请执行以下操作：

        KeyguardManager keyguardManager = (KeyguardManager) getApplicationContext().getSystemService(Context.KEYGUARD_SERVICE); 
        KeyguardLock keyguardLock =  keyguardManager.newKeyguardLock("TAG");
        keyguardLock.disableKeyguard();

添加到清单中：

<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.DISABLE_KEYGUARD" />