您可以检测屏幕尺寸和编程设置的方向。
下面是一个例子：

You could detect the screen size and set the orientation programmatically. Here is an example:

public static void setActivityScreenOrientation(Activity act)
{
    boolean isTablet = false;

    if ((act.getResources().getConfiguration().screenLayout 
            & android.content.res.Configuration.SCREENLAYOUT_SIZE_MASK) == android.content.res.Configuration.SCREENLAYOUT_SIZE_LARGE)
    {
        isTablet = true;
    }

    if ((act.getResources().getConfiguration().screenLayout 
            & android.content.res.Configuration.SCREENLAYOUT_SIZE_MASK) == android.content.res.Configuration.SCREENLAYOUT_SIZE_XLARGE)
    {
        isTablet = true;
    }


    if (isTablet)
    {
        act.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
    }else
    {
        act.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
    }
}

希望它帮助。