欢迎界面动画

实现一个欢迎界面的动画，即打开app显示的页面，动画结束后跳到Activity。

1、欢迎界面的背景是一个绿色矩形

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"android:shape="rectangle" ><solid android:color="#19cc54"/></shape>

2、欢迎界面的布局，整个布局的背景为上面的绿色矩形背景，此外包括两个TextView

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"android:background="@drawable/bg_welcome"android:id="@+id/welcom_layout" ><TextViewandroid:id="@+id/welcomImage"android:layout_height="wrap_content"android:layout_width="wrap_content"android:layout_gravity="center"android:gravity="center"android:layout_marginLeft="20dp"android:layout_marginTop="200dp"android:text="@string/welcom"android:textSize="@dimen/welcomtext"android:textColor="@android:color/white"/> <!-- Welcom to Sunnys blog --><TextViewandroid:id="@+id/madeby"android:layout_height="wrap_content"android:layout_width="wrap_content"android:text="@string/made_by"android:layout_gravity="center"android:layout_marginLeft="80dp"  android:layout_marginTop="150dp"    android:textSize="@dimen/welcom_madeby"android:textColor="@android:color/white"/></LinearLayout>

3、欢迎界面的动画

是逐渐缩小，淡出的效果，动画持续4000毫秒

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"android:duration="4000"><scaleandroid:fromXScale="1.0"android:fromYScale="1.0"android:pivotX="50%"android:pivotY="50%"android:toYScale="0.5"android:toXScale="0.5"/><alphaandroid:fromAlpha="1.0"android:toAlpha="0.0"/>
</set>

4、在WelcomActivity.java中加载页面布局和动画，

public void onAnimationEnd(Animation animation)//在动画结束后跳转到MainActivity

<span style="font-size:14px;">//WelcomActivity.java</span>

package com.sunny.csdnblog;import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.view.Window;
import android.view.animation.AnimationUtils;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.content.Intent;import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
public class WelcomActivity extends Activity{private Handler mHandler;@Overrideprotected void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.welcom_layout);mHandler = new Handler();//TextView welcomTextView = (TextView)findViewById(R.id.welcomImage);//TextView madebyTextView = (TextView)findViewById(R.id.madeby);View welcomView = (View)findViewById(R.id.welcom_layout);Animation animation = AnimationUtils.loadAnimation(this, R.anim.welcom_anim);animation.setAnimationListener(new AnimationListener(){@Overridepublic void onAnimationStart(Animation animation) {// TODO Auto-generated method stub}@Overridepublic void onAnimationEnd(Animation animation) {// TODO Auto-generated method stubmHandler.post(new Runnable(){@Overridepublic void run() {// TODO Auto-generated method stubIntent intent = new Intent(WelcomActivity.this,MainActivity.class);startActivity(intent);WelcomActivity.this.finish();}});}@Overridepublic void onAnimationRepeat(Animation animation) {// TODO Auto-generated method stub}});welcomView.startAnimation(animation);//madebyTextView.startAnimation(animation);}}

5、MainActivity显示一个页面head和一个WebView

public class MainActivity extends FragmentActivity {private WebView webView;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.activity_main);webView = (WebView)findViewById(R.id.webView);webView.getSettings().setJavaScriptEnabled(true);webView.setWebViewClient(new WebViewClient());webView.loadUrl("http://blog.csdn.net/doudoulee_blog");｝
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