1.隐藏标题栏（titlebar）

　　（1）在代码中隐藏标题栏

requestWindowFeature(Window.FEATURE_NO_TITLE);

　　（2）在Manifest中Application或Activity中配置主题样式

android:theme="@android:style/Theme.NoTitleBar"

2.隐藏状态栏（statusbar）

　　（1）在Manifest中Activity中配置主题样式

android:theme="@android:style/Theme.NoTitleBar.Fullscreen"

　　（2）在代码中隐藏状态栏

/**     * 隐藏状态栏     */    private void hideStatusBar() {        //定义全屏参数        int flag = WindowManager.LayoutParams.FLAG_FULLSCREEN;        //获得当前窗体对象        Window window = MainActivity.this.getWindow();        //设置当前窗体为全屏显示        window.setFlags(flag, flag);    }

3.隐藏导航栏（NavigationBar）

　　/**     * 隐藏导航栏,可返回     */    private void hideNavigationBarCanBack() {        View decorView = getWindow().getDecorView();        int uiOptions = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION                | View.SYSTEM_UI_FLAG_FULLSCREEN;        decorView.setSystemUiVisibility(uiOptions);    }

4.同时隐藏状态栏和导航栏

/**     * 隐藏导航栏     */    public void hideNavigationBarAndStatusBar() {        int uiFlags = View.SYSTEM_UI_FLAG_LAYOUT_STABLE                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION                | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN                | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION // hide nav bar                | View.SYSTEM_UI_FLAG_FULLSCREEN; // hide status bar        if (android.os.Build.VERSION.SDK_INT >= 19) {            //SYSTEM_UI_FLAG_IMMERSIVE_STICKY: hide navigation bars - compatibility: building API level is lower thatn 19, use magic number directly for higher API target level            uiFlags |= 0x00001000;        } else {            uiFlags |= View.SYSTEM_UI_FLAG_LOW_PROFILE;        }        getWindow().getDecorView().setSystemUiVisibility(uiFlags);    }

5.动态全屏与退出

/**     * 动态设置全屏     */    private void dynamicFullScreen(){        WindowManager.LayoutParams attrs = getWindow().getAttributes();        attrs.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;        getWindow().setAttributes(attrs);        getWindow().addFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);    }    /**     * 动态退出全屏     */    private void dynamicExitFullScreen(){        WindowManager.LayoutParams attrs = getWindow().getAttributes();        attrs.flags &= (~WindowManager.LayoutParams.FLAG_FULLSCREEN);        getWindow().setAttributes(attrs);        getWindow().clearFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);    }