1     <activity
2         android:name=".SketchpadActivity"
3         android:screenOrientation="landscape"/><!--让该Activity总是显示为横屏-->  

 1     /*
 2      * 通过API动态改变当前屏幕的显示方向
 3      */
 4     public void apiChangeOrientation() {
 5         // 取得当前屏幕方向
 6         int orient = getRequestedOrientation();
 7         Logger.get().i("orientation:" + MyUtils.getOrientationName(orient));
 8
 9         // 若非明确的landscape或portrait时 再透过宽高比例的方法来确认实际显示方向
10             // 这会保证orient最终值会是明确的横屏landscape或竖屏portrait
11         if (orient != ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
12                 && orient != ActivityInfo.SCREEN_ORIENTATION_PORTRAIT) {
13             //宽>高为横屏,反正为竖屏
14             int[] size = MyUtils.getDisplaySize(this);
15             orient = size[0] < size[1] ? ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
16                     : ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
17                     Logger.get().i("w/h:" + MyUtils.getOrientationName(orient));
18         }
19
20         if (orient == ActivityInfo.SCREEN_ORIENTATION_PORTRAIT) {
21             setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
22         }else{
23             setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
24         }
25     }  

 1     // 通过Configuration对象 确认当前显示方向
 2     Configuration conf = getResources().getConfiguration();
 3     String orientName = "undefined";
 4     switch (orient) {
 5     case Configuration.ORIENTATION_LANDSCAPE:
 6         orientName = "landscape";
 7     case Configuration.ORIENTATION_PORTRAIT:
 8         orientName = "portrait";
 9     case Configuration.ORIENTATION_SQUARE:
10         orientName = "square";
11     default:
12         orientName = "undefined";
13     }
14     Logger.get().i("conf.orient:" + orientName);  

1     <activity
2         android:name=".MyActivity"
3         android:configChanges="orientation"
4         android:label="@string/app_name"/>  

1     // 设备配置发生变化时回调
2     public void onConfigurationChanged(Configuration conf) {
3         //super.onConfigurationChanged(conf);
4         //TODO:YOU Process...
5     }