Flutter splash screen

Android

  • Update \android\app\src\main\res\drawable\launch_background.xml (remember using resource in drawable not in mipmap)
<?xml version="1.0" encoding="utf-8"?>
<!-- Modify this file to customize your launch splash screen -->
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@android:color/white" />

    <!-- You can insert your own image assets here -->
    <item>
        <bitmap
            android:gravity="center"
            android:src="@drawable/ic_launcher_background" />
    </item>
</layer-list>

  • Update \android\app\src\main\res\values\styles.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
        <!-- Show a splash screen on the activity. Automatically removed when
            Flutter draws its first frame -->
        <item name="android:windowBackground">@drawable/launch_background</item>
        <item name= "android:windowFullscreen">true</item>
    </style>
</resources>
  • Update android native MainActivity at src\main\...
    • Kotlin
import android.os.Build
import android.os.Bundle
import android.view.ViewTreeObserver
import android.view.WindowManager

import io.flutter.app.FlutterActivity
import io.flutter.plugins.GeneratedPluginRegistrant

class MainActivity : FlutterActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        //make transparent status bar
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            window.statusBarColor = 0x00000000
        }
        GeneratedPluginRegistrant.registerWith(this)
        //Remove full screen flag after load
        val vto: ViewTreeObserver = flutterView.viewTreeObserver
        vto.addOnGlobalLayoutListener(object : ViewTreeObserver.OnGlobalLayoutListener {
            override fun onGlobalLayout() {
                flutterView.viewTreeObserver.removeOnGlobalLayoutListener(this)
                window.clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN)
            }
        })
    }
}
  • Java
import android.os.Build
import android.os.Bundle
import android.view.ViewTreeObserver
import android.view.WindowManager

import io.flutter.app.FlutterActivity
import io.flutter.plugins.GeneratedPluginRegistrant

public class MainActivity extends FlutterActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //make transparent status bar
        getWindow().setStatusBarColor(0x00000000);
        GeneratedPluginRegistrant.registerWith(this);
        //Remove full screen flag after load
        ViewTreeObserver vto = getFlutterView().getViewTreeObserver();
        vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                getFlutterView().getViewTreeObserver().removeOnGlobalLayoutListener(this);
                getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
            }
        });
    }
}

IOS

Open Runner.xcworkspace -> Runner -> Runner -> Assets.scassets -> LaunchImage -> Upload 3 type res

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