Android 全屏相关操作

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);
    }