android - 如何在android中启用接近传感器

Question

我已经在我的代码中成功配置了测距仪。现在我想以编程方式关闭和打开屏幕。传感器代码工作正常，下面的方法也被调用。

@Override
public void onSensorChanged(SensorEvent event) {
    // TODO Auto-generated method stub

    PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
    WakeLock screenWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,"screenWakeLock");

    if (event.values[0] == 0) {
        screenWakeLock.acquire();
        Log.e("onSensorChanged","NEAR");
    } else {
        if (screenWakeLock != null) {
               if(screenWakeLock.isHeld())
                  screenWakeLock.release();
               screenWakeLock = null;
        }
        Log.e("onSensorChanged","FAR");  
    }
} 

我的问题是屏幕没有关闭。我还在代码中添加了所需的权限。还有什么原因？？？

Answer 1

检查为此代码提交的更改，https://github.com/jitsi/jitsi-android/compare/6d356fa637ae...7aba481d773f

getPowerManager().newWakeLock( 32, "proximity_off");