Android 沉浸状态栏和导航栏设置

提供一个简单的工具类，可以单独对欢迎页进行一句代码沉浸式设置导航栏和状态栏：

在 SplashActivity 中添加覆写方法：

override fun onWindowFocusChanged(hasFocus: Boolean) {
    super.onWindowFocusChanged(hasFocus)
    if (hasFocus) {
        StatusBar.hideStatusBarAndNavigationBar(this)
        //StatusBar.fitSystemBar2(this)
        //StatusBar.fitSystemBar3(this)
    }
}

工具类代码如下：

object StatusBar {

    /**
     * 隐藏状态栏和导航栏
     */
    fun fitSystemBar2(activity: Activity) {
        @Suppress("DEPRECATION")
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            val window = activity.window
            val decorView = window.decorView
            val option = View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
                    View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION or
                    View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN or
                    View.SYSTEM_UI_FLAG_HIDE_NAVIGATION or
                    View.SYSTEM_UI_FLAG_FULLSCREEN or
                    View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
            decorView.systemUiVisibility = option

            window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS)
            window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS)
            window.statusBarColor = Color.TRANSPARENT
        }
    }

    /**
     * 隐藏状态栏和导航栏
     */
    @Suppress("DEPRECATION")
    fun fitSystemBar3(activity: Activity) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
            try {
                val lp = activity.window.attributes
                lp.layoutInDisplayCutoutMode =
                    WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES
                activity.window.attributes = lp;
            } catch (e: Exception) {
                e.printStackTrace();
            }
        }
        val window = activity.window
        window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
        window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
        window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
        window.decorView.systemUiVisibility = (
                View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                        or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                        or View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                        or View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                        or View.SYSTEM_UI_FLAG_FULLSCREEN
                        or View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY or View.INVISIBLE
                )
        //设置状态栏和导航栏颜色为透明
        window.statusBarColor = Color.TRANSPARENT
        window.navigationBarColor = Color.TRANSPARENT

    }

    /**
     * 从Android 11开始，setSystemUiVisibility方法已经被废弃掉了。取而代之的是 WindowInsetsController 类的 API
     */
    fun hideStatusBarAndNavigationBar(activity: Activity) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
            val controller = activity.window.insetsController

            if (controller != null) {
                controller.hide(WindowInsets.Type.statusBars() or WindowInsets.Type.navigationBars())
                controller.systemBarsBehavior =
                    WindowInsetsController.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
            }
        } else {
            @Suppress("DEPRECATION")
            activity.window.decorView.systemUiVisibility = (
                    View.SYSTEM_UI_FLAG_IMMERSIVE
                            or View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                            or View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                            or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                            or View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                            or View.SYSTEM_UI_FLAG_FULLSCREEN)
        }
    }

    /**
     * 6.0级以上的沉浸式布局
     */
    @Suppress("DEPRECATION")
    fun fitSystemBar(activity: Activity) {
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) return
        val window = activity.window
        val decorView = window.decorView
        decorView.systemUiVisibility = View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN or
                View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
                View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR

        window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS)
        window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS)
        window.statusBarColor = Color.TRANSPARENT
    }

    /**
     * 6.0及以上的状态栏色调
     */
    @Suppress("DEPRECATION")
    fun lightStatusBar(activity: Activity, light: Boolean) {
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) return
        val window = activity.window
        val decorView = window.decorView
        var visibility = decorView.systemUiVisibility
        visibility = if (light) {
            visibility or View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR
        } else {
            visibility and View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR.inv()
        }
        decorView.systemUiVisibility = visibility
    }

}

这里建议直接使用 hideStatusBarAndNavigationBar 方法。因为很多方法被废弃，所以推荐使用新的 WindowInsetsController 来进行相关设置。