代码方式隐藏状态栏

　　@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //Hide toolbar
        int SDK_INT = android.os.Build.VERSION.SDK_INT;
        if(SDK_INT >= 19)
        {
            setImmersiveSticky();
            View decorView = getWindow().getDecorView();
            decorView.setOnSystemUiVisibilityChangeListener
                    (new View.OnSystemUiVisibilityChangeListener() {
                @Override
                public void onSystemUiVisibilityChange(int visibility) {
                    setImmersiveSticky();
                }
            });
        }

    }
　　@Override
    protected void onResume() {
        super.onResume();
        //Hide toolbar
        int SDK_INT = android.os.Build.VERSION.SDK_INT;
        if(SDK_INT >= 11 && SDK_INT < 14)
        {
            getWindow().getDecorView().setSystemUiVisibility(View.STATUS_BAR_HIDDEN);
        }
        else if(SDK_INT >= 14 && SDK_INT < 19)
        {
            getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_LOW_PROFILE);
        }
        else if(SDK_INT >= 19)
        {
            setImmersiveSticky();
        }
    }

    void setImmersiveSticky() {
        View decorView = getWindow().getDecorView();
        decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_FULLSCREEN
                | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
                | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                | View.SYSTEM_UI_FLAG_LAYOUT_STABLE);
    }