How to correctly realize the method of Android startup screen (avoid white screen)
- 2021-08-21 21:16:22
- OfStack
An incorrect implementation of the Android boot screen may cause users to wait for a long time, or a black-and-white screen may appear. Here is a brief demonstration of how to correctly implement the Android startup screen.
The demonstration is divided into the following steps:
Create the splash_background. xml file in the res/drawable folder. res/values/styles. xml Create java/.../SplashActivity manifests/AndroidManifest. xml1. Create the splash_background. xml file in the res/drawable folder
Adjust the gravity and size of bitmap images according to your needs.
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@color/colorPrimary"/>
<item android:gravity="center" android:width="100dp" android:height="100dp">
<bitmap
android:gravity="fill_horizontal|fill_vertical"
android:src="@drawable/logo"/>
</item>
</layer-list>
2. Edit res/values/styles. xml
The style here is used for the startup screen. This is to hide the action bar when starting the screen.
<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
</style>
<style name="SplashTheme" parent="Theme.AppCompat.Light.NoActionBar">
<item name="android:windowBackground">@drawable/splash_background</item>
</style>
</resources>
3. Create java/.../SplashActivity
1 Once App is started, SplashActivity will be started and then transferred to MainActivity.
package com.example.jtdan.goodSplash;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
public class SplashActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//switch from splash activity to main activity
Intent intent = new Intent(this, MainActivity.class);
startActivity(intent);
finish();
}
}
4. Edit manifests/AndroidManifest. xml
Add a new startup screen Activity to the manifest file.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.jtdan.goodSplash">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="goodSplash"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name="com.example.jtdan.goodSplash.SplashActivity" 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="com.example.jtdan.goodSplash.MainActivity"></activity>
</application>
</manifest>
Sample source address: https://github.com/mrjoedang/goodSplash