Android实现横屏与竖屏之间的转换

public void switchOrientation(View v){
    int orientation = getResources().getConfiguration().orientation;
    if (orientation == Configuration.ORIENTATION_PORTRAIT){
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
    } else{
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
    }
}