Android平板开发永久实现全屏的方法

彷佛Android4.x.x好像要手动受权，其余的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<String> envlist = new ArrayList<String>();
            Map<String, String> 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<String> envlist = new ArrayList<String>();
        Map<String, String> 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上面只须要点击获取权限便可实现要求，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均可以调出状态栏  
        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)  
    }