我如何使一个活动全屏?没有通知栏。
当前回答
在onCreate()中的setContentView之后使用这个方法,并通过getWindow()传递Window对象。
public void makeActivityFullScreen(Window window){
View decorView = window.getDecorView();
// int uiOptions = View.SYSTEM_UI_FLAG_FULLSCREEN;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
window.getAttributes().layoutInDisplayCutoutMode = WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES;
}
decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE
| View.SYSTEM_UI_FLAG_FULLSCREEN
| View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
);
}
此代码也将适用于缺口屏幕。要检查缺口全屏,你需要安卓P,但如果你有一个缺口显示手机,然后去设置->显示设置->应用程序显示比例->选择你的应用程序->有两个安全的选项是显示和全屏,请选择全屏并运行应用程序,你可以看到缺口的全屏也没有安卓派
其他回答
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
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())
}
}
首先,你必须设置你的应用主题与“NoActionBar”如下所示
<!-- Application theme. -->
<style name="AppTheme" parent="@style/Theme.AppCompat.Light.NoActionBar" />
然后在全屏活动中添加这些行。
public class MainActiviy extends AppCompatActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.main);
}
}
它将隐藏动作栏/工具栏和状态栏在你的全屏活动
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"/>
我想使用我自己的主题,而不是使用@android:style/ theme . notitlebar . fullscreen。但它并没有像这里的一些帖子所提到的那样工作,所以我做了一些调整来解决它。
在AndroidManifest.xml:
<activity
android:name=".ui.activity.MyActivity"
android:theme="@style/MyTheme">
</activity>
在styles.xml:
<style name="MyTheme">
<item name="android:windowNoTitle">true</item>
<item name="android:windowActionBar">false</item>
<item name="windowNoTitle">true</item>
<item name="windowActionBar">false</item>
<item name="android:windowFullscreen">true</item>
</style>
注意:在我的情况下,我必须使用name="windowActionBar"而不是name="android:windowActionBar"在它正常工作之前。所以我只是使用了这两种方法,以确保我以后需要移植到新的Android版本。
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