xml Android应用启动画面。参考 - https://www.bignerdranch.com/blog/splash-screens-the-right-way/

Posted 2021-05-17

<!--Launch Screen-->
<style name="AppTheme.LaunchScreen" parent="AppTheme.NoActionBar">
    <item name="android:windowBackground">@drawable/launch_screen</item>
</style>

<?xml version="1.0" encoding="utf-8"?>
<layer-list
    xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:drawable="@color/red_500"/>

    <item>
        <bitmap
            android:gravity="center"
            android:src="@mipmap/ic_launcher"/>
    </item>

</layer-list>

package me.kalehv.popmovie;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;

public class LaunchActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Do Whatever is needed
        
        
        // Launch Main Activity
        Intent intent = new Intent(this, MainActivity.class);
        startActivity(intent);
        finish();
    }
}

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