监听屏幕旋转及旋转屏幕

对象：

android.view.OrientationEventListener

实现方法：

@Override
public void onOrientationChanged(int orientation) {
    // 转换角度为：0,90,180,270
    if ((orientation = checkOrientation(orientation)) == mOrientation)
        return;
    mOrientation = orientation;

    switch (orientation) {
        case Surface.ROTATION_180: // 反向竖屏
            break;
        case Surface.ROTATION_0:   // 竖屏
            break;
        case Surface.ROTATION_90:  // 右横屏
            this.mActivity.setRequestedOrientation(
                    ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
            break;
        case Surface.ROTATION_270: // 左横屏
            this.mActivity.setRequestedOrientation(
                    ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
            break;
    }
    Log.i(TAG, "onOrientationChanged -> " + orientation);
}

// 屏幕旋转角度改变转换
private int checkOrientation(int orientation) {
    return orientation / 90;
} 

使用方法：

mOrientationListener = new OrientationListener(this);
if (mOrientationListener.canDetectOrientation()) {
    mOrientationListener.enable();
} else {
    mOrientationListener.disable();
}