Android如何實現(xiàn)歡迎界面動畫

實現(xiàn)一個歡迎界面的動畫，即打開app顯示的頁面，動畫結(jié)束后跳到Activity。

1、歡迎界面的背景是一個綠色矩形

2、歡迎界面的布局，整個布局的背景為上面的綠色矩形背景，此外包括兩個TextView

3、歡迎界面的動畫

是逐漸縮小，淡出的效果，動畫持續(xù)4000毫秒

4、在WelcomActivity.java中加載頁面布局和動畫，

public?void?onAnimationEnd(Animation?animation)//在動畫結(jié)束后跳轉(zhuǎn)到MainActivity

//WelcomActivity.java

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;
	@Override
	protected?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(){

			@Override
			public?void?onAnimationStart(Animation?animation)?{
				//?TODO?Auto-generated?method?stub
				
			}

			@Override
			public?void?onAnimationEnd(Animation?animation)?{
				//?TODO?Auto-generated?method?stub
				mHandler.post(new?Runnable(){

					@Override
					public?void?run()?{
						//?TODO?Auto-generated?method?stub
						Intent?intent?=?new?Intent(WelcomActivity.this,MainActivity.class);
						startActivity(intent);
						WelcomActivity.this.finish();
					}
					
				});
			}

			@Override
			public?void?onAnimationRepeat(Animation?animation)?{
				//?TODO?Auto-generated?method?stub
				
			}
			
		});
		
		welcomView.startAnimation(animation);
		//madebyTextView.startAnimation(animation);
	}

}

5、MainActivity顯示一個頁面head和一個WebView

public?class?MainActivity?extends?FragmentActivity?{

	private?WebView?webView;
	@Override
	protected?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");
	｝
｝