应用卡在 Android 12（API 级别 31）的启动画面上

Question

The application is stuck on the splash screen. No idea why? I have done everything the same as the documentation. Please look at my code and please tell.

Android Manifest.xml file code:

   <activity
        android:name=".ui.startup.StartupActivity"
        android:exported="true"
        android:label="@string/app_name"
        android:screenOrientation="portrait"
        android:theme="@style/SplashTheme">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

styles.xml code

<style name="SplashTheme" parent="Theme.SplashScreen">
    <item name="windowActionBar">false</item>
    <item name="windowNoTitle">true</item>
    <item name="windowSplashScreenAnimatedIcon">@drawable/splash</item>
</style>

app.gradle dependency Code:

implementation 'androidx.core:core-splashscreen:1.0.0-alpha01'

StartUpActivity Code:

 override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    installSplashScreen()
 }

 override fun onStart() {
    super.onStart()
    proceedNavigation()
 }

Answer 1

I have not implemented splash Screen in Android 12 but according to your Code and some document you need to add setConetView and you have to call installSplashScreen() before it.

override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
installSplashScreen()
setContenView(layout)
}

override fun onStart() {
super.onStart()
proceedNavigation()
} 

Refrence

Answer 2

As per this documentation , you must call the installSplashScreen function in your main or launcher activity. You must call it before the setContentView.

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    val splashScreen = installSplashScreen()
    setContentView(R.layout.activity_main)

You should also consider specifying the activity theme to the attribute postSplashScreenTheme so you can have separate themes for your splash screen and application.