스플래시 화면 (Splash Screen)

Source: https://www.edwith.org/boostcourse-android/lecture/20495/

1. 실행 결과 화면

  

2. AndroidManifest.xml

XML 레이아웃을 만들어 인플레이션하는 방식이 아니라 Manifest.xml에서 theme 속성으로 스타일을 지정하는 방식이다.

일반적으로 setContentView 를 이용하여 레이아웃을 만드는 것보다 테마를 이용해서 화면을 보여주는 것이 더 빠르다. 

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.tistory.qlyh8.practice">
 
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <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>
        <activity android:name=".MainActivity"/>
    </application>
 
</manifest>

3. values/styles.xml

<resources>
 
    <!-- Base application theme. -->
    <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>
    </style>
 
    <style name="SplashTheme" parent="Theme.AppCompat.NoActionBar">
        <item name="android:windowBackground">@drawable/splash_bg</item>
    </style>
 
</resources>
 

4. res/drawable/splash_bg.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/splash_bg_gradient"/>
    <item android:top="210dp">
        <bitmap android:src="@drawable/image22" android:gravity="top"/>
    </item>
</layer-list>

5. res/drawable/splash_bg_gradient.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <gradient
        android:startColor="#FF3E50B4"
        android:centerColor="#FF7288DB"
        android:endColor="#FF7288DB"
        android:angle="90"
        android:centerY="0.5"/>
 
    <corners android:radius="0dp" />
</shape>

6. SplashActivity.java

package com.tistory.qlyh8.practice;
 
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
 
public class SplashActivity extends AppCompatActivity {
 
    Handler handler = new Handler();
 
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
 
        // 2초 뒤에 main 화면이 보임
        handler.postDelayed(new Runnable() {
            @Override
            public void run() {
                startActivity(new Intent(getApplicationContext(), MainActivity.class));
                finish();
            }
        }, 2000);
    }
}
 

7. 참고

- Splash Sample: https://github.com/dudmy/blog-sample

- Material Design: https://material.io/design/