今天春哥给大家讲讲安卓开发教程之如何设置添加启动画面,本文实例讲述了Android简单启动画面实现方法,分享给大家供大家参考,具体如下:
每个Android应用程序启动之后都会出现一个Splash启动界面,显示产品LOGO、公司LOGO或者开发者信息。如果应用程序启动时间比较长,那么启动界面就是一个很好的东西,可以让用户耐心等待这段枯燥的时间,提高用户体验。
1. splash.xml布局文件
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< RelativeLayout xmlns:android = "http://schemas.android.com/apk/res/android"
xmlns:tools = "http://schemas.android.com/tools"
android:layout_width = "match_parent"
android:layout_height = "match_parent"
tools:context = ".SplashActivity" >
< ImageView
android:layout_width = "match_parent"
android:layout_height = "match_parent"
android:background = "@drawable/welcome_android"
android:scaleType = "fitCenter" /> </ RelativeLayout > |
2. SplashActivity类,使用Handler的postDelayed方法,3秒后执行跳转到主视图
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package cn.eoe.leigo.splash; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.os.Handler; public class SplashActivity extends Activity {
//延迟3秒
private static final long SPLASH_DELAY_MILLIS = 3000 ;
@Override
protected void onCreate(Bundle savedInstanceState) {
super .onCreate(savedInstanceState);
setContentView(R.layout.splash);
// 使用Handler的postDelayed方法,3秒后执行跳转到MainActivity
new Handler().postDelayed( new Runnable() {
public void run() {
goHome();
}
}, SPLASH_DELAY_MILLIS);
}
private void goHome() {
Intent intent = new Intent(SplashActivity. this , MainActivity. class );
SplashActivity. this .startActivity(intent);
SplashActivity. this .finish();
} } |
3. 配置AndroidManifest.xml
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<? xml version = "1.0" encoding = "utf-8" ?> < manifest xmlns:android = "http://schemas.android.com/apk/res/android"
package = "cn.eoe.leigo.splash"
android:versionCode = "1"
android:versionName = "1.0" >
< uses-sdk
android:minSdkVersion = "10"
android:targetSdkVersion = "10" />
< application
android:icon = "@drawable/logo"
android:label = "@string/app_name" >
< activity
android:name = ".SplashActivity"
android:configChanges = "keyboardHidden"
android:label = "@string/app_name"
android:launchMode = "singleTask"
android:screenOrientation = "portrait"
android:theme = "@android:style/Theme.NoTitleBar.Fullscreen" >
< intent-filter >
< action android:name = "android.intent.action.MAIN" />
< category android:name = "android.intent.category.LAUNCHER" />
</ intent-filter >
</ activity >
< activity android:name = ".MainActivity" />
</ application > |