andoird闪屏

当然网上也有很多很好的例子.

那我就拿两种方式的闪屏来做效果,希望大家喜欢

1.首先讲个简单版的闪屏效果,主要为淡入淡出的效果

首先在res下创建文件夹anim,然后依次创建这2个文件

alpha_out.xml

<?xml version="1.0" encoding="utf-8"?><setxmlns:android="http://schemas.android.com/apk/res/android"><alphaandroid:fromAlpha="0.0"          动画起始时透明度;android:toAlpha="1.0"              动画结束时透明度android:duration="1000" />      动画持续使劲</set>

 

alpha_in.xml

<setxmlns:android="http://schemas.android.com/apk/res/android"><alphaandroid:fromAlpha="1.0"android:toAlpha="0.0"android:duration="1000" /></set>

 

一进一出就形成了淡入淡出效果了,希望大家能想明白这个地方.

/** * 闪屏启动 *  * @author Bert Guo 2013-3-1 */public class AppStart extends Activity { @Override protected void onCreate(Bundle savedInstanceState) {  // TODO Auto-generated method stub  super.onCreate(savedInstanceState);  LinearLayout linear = new LinearLayout(AppStart.this);  linear.setLayoutParams(new LinearLayout.LayoutParams(    LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));  linear.setBackgroundDrawable(getResources().getDrawable(R.drawable.b1));  setContentView(linear);  new CountDownTimer(2000, 1000) { // 倒计时启动界面效果   // 2000->从开始调用start()到倒计时完成并onFinish()方法被调用的毫秒数   // 1000->接收onTick(long)回调的间隔时间   @Override   public void onTick(long millisUntilFinished) {   }   @Override   public void onFinish() {    redirectTo();   }  }.start(); } /**  * 跳转到主界面  */ private void redirectTo() {  UIHelper.Go(AppStart.this, MainActivity.class); // 跳转到MainActivity界面  int VERSION = Integer.parseInt(android.os.Build.VERSION.SDK);  if (VERSION >= 5) { // 版本>=5   // 在startActivity后,加入overridePendingTransition实现淡入淡出效果   // 第一个activity退出时的动画,第二个activity进入时的动画   AppStart.this.overridePendingTransition(R.anim.alpha_out,     R.anim.alpha_in);  }  finish(); // 销毁当前Activity }}

 

start.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="fill_parent" android:layout_height="fill_parent" android:gravity="bottom"    android:background="@drawable/b1"> </LinearLayout>

 

 <activity            android:name=".AppStart"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <activity            android:name=".MainActivity"            android:label="@string/app_name" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.DEFAULT" />            </intent-filter>        </activity>

 

MainActivity为一个普通界面就行..这是普通的,然后下面再讲一个动画效果的闪屏

提供点核心代码.

 

 

 

 

 

2.下面这个基本没见人去这么使用过,动画效果闪屏.

flg.xml

<?xml version="1.0" encoding="utf-8"?><animation-list   xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/flaganim" android:oneshot="false" >    <item android:drawable="@drawable/f03" android:duration="100" />    <item android:drawable="@drawable/f04" android:duration="100" />    <item android:drawable="@drawable/f05" android:duration="100" />    <item android:drawable="@drawable/f06" android:duration="100" />    <item android:drawable="@drawable/f07" android:duration="100" />    <item android:drawable="@drawable/f08" android:duration="100" />    <item android:drawable="@drawable/f09" android:duration="100" />    <item android:drawable="@drawable/f10" android:duration="100" /> </animation-list>

 

splash.xml

 

<?xml version="1.0" encoding="utf-8"?><LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="wrap_content"  android:layout_height="wrap_content"   android:id="@+id/TheSplashLayout"  android:layout_gravity="center"  >   <ImageView   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:id="@+id/SplashImageView"  android:layout_gravity="center"    > </ImageView> <!--  Not animated <ImageView   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:id="@+id/SplashImageView"  android:src="@drawable/lnxins"  android:layout_gravity="center"    >  </ImageView>  --></LinearLayout> 

 

appear.xml

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"> <alpha  android:interpolator="@android:anim/accelerate_interpolator"  android:fromAlpha="0.0" android:toAlpha="1.0"  android:duration="800" /></set>

 

 

disappear.xml

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"> <alpha  android:interpolator="@android:anim/decelerate_interpolator"  android:fromAlpha="1.0" android:toAlpha="0.0"  android:duration="800" /></set>

 

 

SplashScreen

 

public class SplashScreen extends Activity {     /**     * The thread to process splash screen events     */    private Thread mSplashThread;  /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) {     super.onCreate(savedInstanceState);     // Splash screen view     setContentView(R.layout.splash);             // Start animating the image     final ImageView splashImageView = (ImageView) findViewById(R.id.SplashImageView);     splashImageView.setBackgroundResource(R.drawable.flag);     final AnimationDrawable frameAnimation = (AnimationDrawable)splashImageView.getBackground();     splashImageView.post(new Runnable(){   @Override   public void run() {    frameAnimation.start();       }           });                    final SplashScreen sPlashScreen = this;             // The thread to wait for splash screen events     mSplashThread =  new Thread(){      @Override      public void run(){       try {        synchronized(this){         // Wait given period of time or exit on touch         wait(5000);        }       }        catch(InterruptedException ex){               }       finish();              // Run next activity       Intent intent = new Intent();       intent.setClass(sPlashScreen, MainActivity.class);       startActivity(intent);       stop();               }     };          mSplashThread.start();      }}