android手機旋轉方向識別

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private OrientationEventListener mOrientationListener;    private String TAG = "MainActivity";    private int screenCurOrient = 2; //1表示正豎屏，2表示正橫屏，3表示反豎屏，4表示反橫屏    private final void startOrientationChangeListener() {        mOrientationListener = new OrientationEventListener(this) {            @Override            public void onOrientationChanged(int rotation) {                //判斷四個方向                if (rotation == -1) {                    Log.d(TAG, "手機平放:" + rotation);                } else if (rotation < 10 || rotation > 350) {                    screenOrientChange(1);                } else if (rotation < 100 && rotation > 80) {                    screenOrientChange(4);                } else if (rotation < 190 && rotation > 170) {                    screenOrientChange(3);                } else if (rotation < 280 && rotation > 260) {                    screenOrientChange(2);                }                else                {                }            }        };        mOrientationListener.enable();    }    private void screenOrientChange(int Orient)    {        if(Orient != screenCurOrient)        {            screenCurOrient = Orient;            switch (screenCurOrient)            {                case 1:                    Log.d(TAG, "正豎屏:");                    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);                    break;                case 2:                    Log.d(TAG, "正橫屏:");                    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);                    break;                case 3:                    Log.d(TAG, "反豎屏:");                    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);                    break;                case 4:                    Log.d(TAG, "反橫屏:");                    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);                    break;            }        }    }

在onCreate方法中調用startOrientationChangeListener方法即可。

 

android手機旋轉方向識別