1. 在drawable-mdpi文件夹中存放bg_v（竖屏背景图片）和bg_h（横屏背景图片）。
2.
1 public class AndroidHelper { 2 3 public AndroidHelper() { 4 5 } 6 //获取屏幕方向 7 public static int ScreenOrient(Activity activity) { 8 int orient = activity.getRequestedOrientation(); 9 if (orient != ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE && orient != ActivityInfo.SCREEN_ORIENTATION_PORTRAIT) { 10 //宽<高为竖屏，反之为横屏 11 WindowManager windowManager = activity.getWindowManager(); 12 Display display = windowManager.getDefaultDisplay(); 13 14 int screenWidth = display.getWidth(); 15 int screenHeight = display.getHeight(); 16 17 orient = screenWidth < screenHeight? ActivityInfo.SCREEN_ORIENTATION_PORTRAIT : 18 ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE; 19 } 20 return orient; 21 } 22 23 public static void AutoBackground(Activity activity, View view, int bg_v, int bg_h) { 24 25 int orient = ScreenOrient(activity); 26 if (orient == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE) {//横屏 27 view.setBackgroundResource(bg_h); 28 } 29 else {//竖屏 30 view.setBackgroundResource(bg_v); 31 } 32 }
3. 在MainActivity的onCreate方法中实现
1 LinearLayout layout = (LinearLayout) findViewById(R.id.layout); 2//背景自动适应 3 Utility.AndroidHelper.AutoBackground(this, layout, R.drawable.bg_v, R.drawable.bg_h);