Why does the screen appear for 1 second when launching applications on Android?

Question

When I click the application icons and launch the applications, a white screen will appear on the screen for 1 second.
I do not know why. Is there any idea to clear this white screen and go straight to my work?

Answer 1

white / black screen is the background of the image window.

The background of the window is displayed during, for example. your onCreate() works and your layouts are bloated. This can take some time, especially if there are many bitmaps that need to be read, decoded, and scaled.

Changing the theme works because some themes have a custom window background. For example, Theme.Wallpaper has a transparent background . There are other definitions. Essentially you want:

 <style name="YourTheme"> <item name="android:windowBackground">@null</item> </style> 

Programmatically, you can achieve the same result with

 getWindow().setBackgroundDrawable(null); 

at the top of the onCreate() action.

(An old question, but came across a different answer, and there was no good answer.)

Answer 2

Settings File> Settings> Build, Deploy> Instant Start Uncheck all the options available there.

and add the line below to your style.xml

  <item name="android:windowDisablePreview">true</item> <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar"> <!-- Customize your theme here. --> <item name="colorPrimary">@color/colorPrimary</item> <item name="colorPrimaryDark">@color/colorPrimaryDark</item> <item name="colorAccent">@color/colorAccent</item> <item name="android:windowFullscreen">true</item> <item name="android:windowDisablePreview">true</item> </style> apply changes in AndroidMainfest.xml <application android:theme="@style/AppTheme"> 

Answer 3

After changing style.xml:

 <resources> <style name="AppTheme" parent="android:Theme.Wallpaper" /> </resources> 

it works!! Thanks everyone

Answer 4

Add the following to the manifest file of the appropriate action:

  android:launchMode="standard" 

and remove android: label = "@ string / app_name" from the corresponding action, it really helped me

Answer 5

In your manifest.xml file, delete the line android:theme="@style/AppTheme" for your application. and check it again

Answer 6

Use this tag in the manifest:

 android:theme="@android:style/Theme.NoTitleBar.Fullscreen" 

Answer 7

Just specify a transparent theme for the initial activity in the AndroidManifest.xml file.

how

 <activity android:name="first Activity Name" android:theme="@android:style/Theme.Translucent.NoTitleBar" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> 

Answer 8

Like you, the pipe. First they show the icon screen instead of the white screen. And after 2 seconds it shows the initial screen.

first create an XML drawing in res / drawable.

 <?xml version="1.0" encoding="utf-8"?> <layer-list xmlns:android="http://schemas.android.com/apk/res/android"> <item android:drawable="@color/gray"/> <item> <bitmap android:gravity="center" android:src="@mipmap/ic_launcher"/> </item> </layer-list> 

Then you set this as the background splash effect in the theme. Browse to the styles.xml file and add a new theme for your splash activity.

 <resources> <!-- Base application theme. --> <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar"> <!-- Customize your theme here. --> </style> <style name="SplashTheme" parent="Theme.AppCompat.NoActionBar"> <item name="android:windowBackground">@drawable/background_splash</item> </style> </resources> 

In the new SplashTheme, set the window background attribute for your XML resource. Configure this as a burst activity theme in your AndroidManifest.xml:

 <activity android:name=".SplashActivity" android:theme="@style/SplashTheme"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> 

This link gives what you want. step by step procedure. https://www.bignerdranch.com/blog/splash-screens-the-right-way/

Answer 9

In Styles add the following things

  <item name="android:windowFullscreen">true</item> <item name="android:windowContentOverlay">@null</item> <item name="android:windowIsTranslucent">true</item> 

Hope this helps you and his work for me