代码记录android怎么实现状态栏导航栏隐藏

代码来源 gitcode.com/gh_mirrors/…

关键代码

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    val mDecorView = window.decorView as ViewGroup

    //防止系统栏隐藏时内容区域大小发生变化
    var uiFlags = View.SYSTEM_UI_FLAG_LAYOUT_STABLE
    //Activity全屏显示，但状态栏不会被隐藏覆盖，状态栏依然可见，Activity顶端布局部分会被状态栏遮住。
    uiFlags = uiFlags or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
    uiFlags = hideBarBelowR(uiFlags);
    //应用flag
    mDecorView.systemUiVisibility = uiFlags

    val mContentView = mDecorView.findViewById<ViewGroup?>(R.id.content)
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
        val controller = mContentView.windowInsetsController
        controller?.hide(WindowInsets.Type.statusBars())
        controller?.hide(WindowInsets.Type.navigationBars())
        controller!!.systemBarsBehavior = WindowInsetsController.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
    }

    fitsNotchScreen()

}


private fun fitsNotchScreen() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
        try {
            val lp: WindowManager.LayoutParams = window.attributes
            lp.layoutInDisplayCutoutMode =
                WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES
            window.attributes = lp
        } catch (e: Exception) {
        }
    }
}

private fun hideBarBelowR(uiFlags: Int): Int {
    var flags = uiFlags
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
        return flags
    }
    window.clearFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS)
    // 正确：状态栏 + 导航栏一起隐藏
    flags = flags or (
            View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                    or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                    or View.SYSTEM_UI_FLAG_FULLSCREEN
                    or View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                    or View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                    or View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
            )

    return flags
}

如果是flutter 项目,在flutter端 可能需要调用

SystemChrome.setEnabledSystemUIMode(
  SystemUiMode.immersiveSticky,
  overlays: [],
);