我如何使一个活动全屏?没有通知栏。
当前回答
奇巧有一种叫做沉浸式全屏模式的技术。
例子
其他回答
充分沉浸:
private void askForFullScreen()
{
getActivity().getWindow().getDecorView().setSystemUiVisibility(
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
| View.SYSTEM_UI_FLAG_IMMERSIVE);
}
脱离完全沉浸模式:
private void moveOutOfFullScreen() {
getActivity().getWindow().getDecorView().setSystemUiVisibility(
View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
}
这些答案大部分似乎都过时了。Developer.android.com建议这样做:
科特林:
private fun hideSystemBars() {
val windowInsetsController = ViewCompat.getWindowInsetsController(window.decorView) ?: return
windowInsetsController.systemBarsBehavior = WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
windowInsetsController.hide(WindowInsetsCompat.Type.systemBars())
}
Java:
private void hideSystemBars() {
WindowInsetsControllerCompat windowInsetsController = ViewCompat.getWindowInsetsController(getWindow().getDecorView());
if (windowInsetsController == null) {
return;
}
windowInsetsController.setSystemBarsBehavior(WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE);
windowInsetsController.hide(WindowInsetsCompat.Type.systemBars());
}
更多信息:https://developer.android.com/training/system-ui/immersive
如果你不想使用主题@android:style/ theme . notitlebar。因为你已经在使用你自己的主题,你可以使用android:windowFullscreen。
在AndroidManifest.xml:
<activity
android:name=".ui.activity.MyActivity"
android:theme="@style/MyTheme">
</activity>
在styles.xml:
<style name="MyTheme" parent="your parent theme">
<item name="android:windowNoTitle">true</item>
<item name="android:windowFullscreen">true</item>
</style>
将此添加到styles.xml中
<item name="android:windowFullscreen">true</item>
的例子,
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<!-- Customize your theme here. -->
<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="android:windowFullscreen">true</item>
<item name="colorAccent">@color/colorAccent</item>
</style>
并更改AndroidManifest文件与波纹代码
android:theme="@style/AppTheme"
的例子,
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:theme="@style/AppTheme"
android:supportsRtl="true">
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
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