我如何使一个活动全屏?没有通知栏。
当前回答
提示:使用getWindow().setLayout()会搞砸你的全屏显示!注意，这个方法的文档说:
设置窗口的宽度和高度布局参数… 你可以把它们改成……用于制作非全屏窗口的绝对值。
http://developer.android.com/reference/android/view/Window.html#setLayout%28int,%20int%29
For my purposes, I found that I had to use setLayout with absolute parameters to resize my full screen window correctly. Most of the time, this worked fine. It was called by an onConfigurationChanged() event. There was a hiccup, however. If the user exited the app, changed the orientation, and reentered, it would lead to firing off my code which included setLayout(). During this re-entry time window, my status bar (which was hidden by the manifest) would be made to re-appear, but at any other time setLayout() would not cause this! The solution was to add an additional setLayout() call after the one with the hard values like so:
public static void setSize( final int width, final int height ){
//DO SOME OTHER STUFF...
instance_.getWindow().setLayout( width, height );
// Prevent status bar re-appearance
Handler delay = new Handler();
delay.postDelayed( new Runnable(){ public void run() {
instance_.getWindow().setLayout(
WindowManager.LayoutParams.FILL_PARENT,
WindowManager.LayoutParams.FILL_PARENT );
}}, FILL_PARENT_ON_RESIZE_DELAY_MILLIS );
}
然后，窗口正确地调整大小，状态栏不会重新出现，不管触发这一事件。
其他回答
在经历了很长时间的失败后，我想出了自己的解决方案，这与其他开发者的做法非常相似。所以如果有人需要她的话。我的问题是，系统导航栏没有隐藏后调用。在我的例子中，我需要横屏，所以为了以防万一，注释那一行。 首先，创建风格
<style name="FullscreenTheme" parent="AppTheme">
<item name="android:actionBarStyle">@style/FullscreenActionBarStyle</item>
<item name="android:windowActionBarOverlay">true</item>
<item name="android:windowBackground">@null</item>
<item name="metaButtonBarStyle">?android:attr/buttonBarStyle</item>
<item name="metaButtonBarButtonStyle">?android:attr/buttonBarButtonStyle</item>
</style>
这是我的舱单
<activity
android:name=".Splash"
android:screenOrientation="landscape"
android:configChanges="orientation|keyboard|keyboardHidden|screenLayout|screenSize"
android:label="@string/app_name"
android:theme="@style/SplashTheme">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".MainActivity"
android:configChanges="orientation|keyboard|keyboardHidden|screenLayout|screenSize"
android:screenOrientation="landscape"
android:label="@string/app_name"
android:theme="@style/FullscreenTheme">
</activity>
这是我的spalsh活动
public class Splash extends Activity {
/** Duration of wait **/
private final int SPLASH_DISPLAY_LENGTH = 2000;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.splash_creen);
/* New Handler to start the Menu-Activity
* and close this Splash-Screen after some seconds.*/
new Handler().postDelayed(new Runnable(){
@Override
public void run() {
/* Create an Intent that will start the Menu-Activity. */
Intent mainIntent = new Intent(Splash.this,MainActivity.class);
Splash.this.startActivity(mainIntent);
Splash.this.finish();
}
}, SPLASH_DISPLAY_LENGTH);
}
}
这是我主要的全屏活动。onSystemUiVisibilityChange这个方法是退出重要的，否则android主导航栏在调用后将保持不变，不再消失。很烦人的问题，但是这个函数解决了这个问题。
公共类MainActivity扩展了AppCompatActivity ｛
private View mContentView;
@Override
public void onResume(){
super.onResume();
mContentView.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);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fullscreen2);
ActionBar actionBar = getSupportActionBar();
if (actionBar != null)
{
actionBar.hide();
}
mContentView = findViewById(R.id.fullscreen_content_text);
mContentView.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);
View decorView = getWindow().getDecorView();
decorView.setOnSystemUiVisibilityChangeListener
(new View.OnSystemUiVisibilityChangeListener()
{
@Override
public void onSystemUiVisibilityChange(int visibility)
{
System.out.println("print");
if ((visibility & View.SYSTEM_UI_FLAG_FULLSCREEN) == 0)
{
mContentView.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);
}
else
{
mContentView.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);
}
}
});
}
}
这是我的启动画面布局:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ImageView android:id="@+id/splashscreen" android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:background="@android:color/white"
android:src="@drawable/splash"
android:layout_gravity="center"/>
<TextView android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Hello World, splash"/>
</LinearLayout>
This is my fullscreen layout
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#0099cc"
>
<TextView
android:id="@+id/fullscreen_content_text"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:keepScreenOn="true"
android:text="@string/dummy_content2"
android:textColor="#33b5e5"
android:textSize="50sp"
android:textStyle="bold" />
</FrameLayout>
我希望这对你有所帮助
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
内部styles.xml……
<!-- No action bar -->
<style name="NoActonBar" parent="Theme.AppCompat.Light.NoActionBar">
<!-- Theme customization. -->
<item name="colorPrimary">#000</item>
<item name="colorPrimaryDark">#444</item>
<item name="colorAccent">#999</item>
<item name="android:windowFullscreen">true</item>
</style>
这对我很管用。希望对你有所帮助。
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= >
你可以通过编程来实现:
public class ActivityName extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// remove title
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.main);
}
}
或者你也可以通过AndroidManifest.xml文件来实现:
<activity android:name=".ActivityName"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen"/>
编辑:
如果你正在使用AppCompatActivity，那么你需要添加新的主题
<style name="Theme.AppCompat.Light.NoActionBar.FullScreen" parent="@style/Theme.AppCompat.Light.NoActionBar">
<item name="android:windowNoTitle">true</item>
<item name="android:windowActionBar">false</item>
<item name="android:windowFullscreen">true</item>
<item name="android:windowContentOverlay">@null</item>
</style>
然后使用它。
<activity android:name=".ActivityName"
android:label="@string/app_name"
android:theme="@style/Theme.AppCompat.Light.NoActionBar.FullScreen"/>
感谢https://stackoverflow.com/a/25365193/1646479
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