我如何使一个活动全屏?没有通知栏。
当前回答
科特林
遵循谷歌文档,有一个简单的方法:
override fun onWindowFocusChanged(hasFocus: Boolean) {
super.onWindowFocusChanged(hasFocus)
if (hasFocus) hideSystemUI() }
private fun hideSystemUI() {
// Enables regular immersive mode.
// For "lean back" mode, remove SYSTEM_UI_FLAG_IMMERSIVE.
// Or for "sticky immersive," replace it with SYSTEM_UI_FLAG_IMMERSIVE_STICKY
window.decorView.systemUiVisibility = (View.SYSTEM_UI_FLAG_IMMERSIVE
// Set the content to appear under the system bars so that the
// content doesn't resize when the system bars hide and show.
or View.SYSTEM_UI_FLAG_LAYOUT_STABLE
or View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
// Hide the nav bar and status bar
or View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
or View.SYSTEM_UI_FLAG_FULLSCREEN) }
// Shows the system bars by removing all the flags
// except for the ones that make the content appear under the system bars.
private fun showSystemUI() {
window.decorView.systemUiVisibility =
(View.SYSTEM_UI_FLAG_LAYOUT_STABLE
or View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN) }
谷歌文档
其他回答
主题
<style name="Theme.FluidWallpaper.FullScreen" parent="@style/Theme.AppCompat.Light.NoActionBar">
<item name="android:windowFullscreen">true</item>
<item name="android:windowTranslucentStatus">true</item>
<item name="android:windowTranslucentNavigation">true</item>
<item name="android:statusBarColor">@android:color/transparent</item>
<item name="android:navigationBarColor">@android:color/transparent</item>
<item name="android:windowLayoutInDisplayCutoutMode" tools:targetApi="o_mr1">shortEdges</item>
</style>
安卓清单
<activity android:exported="false"
android:name=".FullScreenActivity"
android:screenOrientation="fullSensor"
android:theme="@style/Theme.FluidWallpaper.FullScreen"/>
getWindow () .setFlags (WindowManager.LayoutParams。FLAG_LAYOUT_NO_LIMITS WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);if (getSupportActionBar() != null){getSupportActionBar().hide();}
对于安卓X
1. 透明状态栏
window?.decorView?.systemUiVisibility = (View.SYSTEM_UI_FLAG_LAYOUT_STABLE
or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN)
window.statusBarColor = Color.TRANSPARENT
2. 透明的状态栏和底部导航栏
window.setFlags(
WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS,
WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
);
3.隐藏状态栏
API 30+推荐的Compat解决方案(包括向后兼容性)
val windowInsetsController =
WindowCompat.getInsetsController(window, window.decorView) ?: return
windowInsetsController.systemBarsBehavior =
WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
windowInsetsController.hide(WindowInsetsCompat.Type.statusBars())
https://developer.android.com/training/system-ui/immersive
4. 隐藏状态栏和底部导航栏
消防级别30:
SystemUiVisibility标志已弃用。请改用WindowInsetsController。
和3一样。,只需使用WindowInsetsCompat.Type.systemBars()
val actionBar: ActionBar? = supportActionBar
if (actionBar != null) actionBar.hide()
val windowInsetsController =
WindowCompat.getInsetsController(window, window.decorView) ?: return
windowInsetsController.systemBarsBehavior =
WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
windowInsetsController.hide(WindowInsetsCompat.Type.systemBars())
https://developer.android.com/training/system-ui/immersive
把这些代码放在哪里?
override fun onCreate(savedInstanceState: Bundle?) {
/* Put above code here ..... */
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_slider)
}
Note
我在Pixel 3A模拟器中检查了这段代码 可能自定义android操作系统不支持 set style <style name="主题。"全屏Theme.MaterialComponents.DayNight.NoActionBar“父= >
从mozilla找到解决方案,他们在这里做了一个扩展库
如果链接中断,这里是代码
/**
* Retrieves a {@link WindowInsetsControllerCompat} for the top-level window decor view.
*/
fun Window.getWindowInsetsController(): WindowInsetsControllerCompat {
return WindowInsetsControllerCompat(this, this.decorView)
}
/**
* Attempts to call immersive mode using the View to hide the status bar and navigation buttons.
* @param onWindowFocusChangeListener optional callback to ensure immersive mode is stable
* Note that the callback reference should be kept by the caller and be used for [exitImmersiveModeIfNeeded] call.
*/
fun Activity.enterToImmersiveMode(
onWindowFocusChangeListener: ViewTreeObserver.OnWindowFocusChangeListener? = null
) {
window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
window.getWindowInsetsController().apply {
hide(WindowInsetsCompat.Type.systemBars())
systemBarsBehavior = WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
}
// We need to make sure system bars do not become permanently visible after interactions with content
// see https://github.com/mozilla-mobile/fenix/issues/20240
onWindowFocusChangeListener?.let {
window.decorView.viewTreeObserver?.addOnWindowFocusChangeListener(it)
}
}
/**
* Attempts to come out from immersive mode using the View.
* @param onWindowFocusChangeListener optional callback to ensure immersive mode is stable
* Note that the callback reference should be kept by the caller and be the same used for [enterToImmersiveMode] call.
*/
@Suppress("DEPRECATION")
fun Activity.exitImmersiveModeIfNeeded(
onWindowFocusChangeListener: ViewTreeObserver.OnWindowFocusChangeListener? = null
) {
if (WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON and window.attributes.flags == 0) {
// We left immersive mode already.
return
}
onWindowFocusChangeListener?.let {
window.decorView.viewTreeObserver?.removeOnWindowFocusChangeListener(it)
}
window.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
window.getWindowInsetsController().apply {
show(WindowInsetsCompat.Type.systemBars())
}
}
使用Android Studio(当前版本是2.2.2)很容易添加一个全屏活动。
请看步骤:
右键单击你的java主包,选择“新建”,选择“活动”,然后点击“全屏活动”。
自定义活动(“活动名称”,“布局名称”等),点击“完成”。
完成了!
现在你有一个全屏的活动很容易(查看java类和活动布局,以了解事情是如何工作的)!
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