似乎Android4.x.x好像要手动授权，其他的Android系统就不太清楚了  //实现让状态栏恢复 public static void showBar() {        try {            String command;            command = "LD_LIBRARY_PATH=endorb:/systemb am startservice -n com.android.systemui/.SystemUIService";            ArrayList
    
      envlist = new ArrayList
     
      ();            Map
      
        env = System.getenv();            for (String envName : env.keySet()) {                envlist.add(envName + "=" + env.get(envName));            }            String[] envp = envlist.toArray(new String[0]);            Process proc = Runtime.getRuntime().exec(                    new String[]{"su", "-c", command}, envp);            proc.waitFor();        } catch (Exception e) {            e.printStackTrace();        }    }}
      
     
    

//隐藏状态栏实现全屏public static void closeBar() {    try {        String command;        command = "LD_LIBRARY_PATH=endorb:/systemb service call activity 42 s16 com.android.systemui";        ArrayList
    
      envlist = new ArrayList
     
      ();        Map
      
        env = System.getenv();        for (String envName : env.keySet()) {            envlist.add(envName + "=" + env.get(envName));        }        String[] envp = envlist.toArray(new String[0]);        Process proc = Runtime.getRuntime().exec(                new String[]{"su", "-c", command}, envp);        proc.waitFor();    } catch (Exception ex) {        ex.printStackTrace();    }}
      
     
    

上面的在android4.4上面只需要点击获取权限即可实现要求，而在android5.1上面就不行。下面提供一种比上面更好的方法:

public void toggleHideyBar() {        // BEGIN_INCLUDE (get_current_ui_flags)          // The UI options currently enabled are represented by a bitfield.          // getSystemUiVisibility() gives us that bitfield.          int uiOptions = getWindow().getDecorView().getSystemUiVisibility();        int newUiOptions = uiOptions;        // END_INCLUDE (get_current_ui_flags)          // BEGIN_INCLUDE (toggle_ui_flags)          boolean isImmersiveModeEnabled =                ((uiOptions | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY) == uiOptions);        if (isImmersiveModeEnabled) {            Log.i("123", "Turning immersive mode mode off. ");        } else {            Log.i("123", "Turning immersive mode mode on.");        }        // Navigation bar hiding:  Backwards compatible to ICS.          if (Build.VERSION.SDK_INT >= 14) {            newUiOptions ^= View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;        }        // Status bar hiding: Backwards compatible to Jellybean          if (Build.VERSION.SDK_INT >= 16) {            newUiOptions ^= View.SYSTEM_UI_FLAG_FULLSCREEN;        }        // Immersive mode: Backward compatible to KitKat.          // Note that this flag doesn't do anything by itself, it only augments the behavior          // of HIDE_NAVIGATION and FLAG_FULLSCREEN.  For the purposes of this sample          // all three flags are being toggled together.          // Note that there are two immersive mode UI flags, one of which is referred to as "sticky".          // Sticky immersive mode differs in that it makes the navigation and status bars          // semi-transparent, and the UI flag does not get cleared when the user interacts with          // the screen.          if (Build.VERSION.SDK_INT >= 18) {            newUiOptions ^= View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;        }       //getWindow().getDecorView().setSystemUiVisibility(newUiOptions);//上边状态栏和底部状态栏滑动都可以调出状态栏          getWindow().getDecorView().setSystemUiVisibility(4108);//这里的4108可防止从底部滑动调出底部导航栏          //END_INCLUDE (set_ui_flags)      }