android的进度条

1、实现的效果 

2、布局代码

先写一个my_browser.xml文件 存放WebView

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >        <WebView        android:id="@+id/webView"        android:layout_width="fill_parent"        android:layout_height="fill_parent" /></LinearLayout>

 进度条布局

然后写一个broser.xml存放进度条的

<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent"> 	<TextView 	android:id="@+id/tvtitle" 	android:layout_width="fill_parent" 	android:layout_height="wrap_content" 	android:focusableInTouchMode="true" 	android:singleLine="true" 	android:ellipsize="marquee" 	android:focusable="false" 	android:marqueeRepeatLimit="marquee_forever" 	android:textSize="20sp" android:layout_centerVertical="true"/> 	<ProgressBar 		android:id="@+id/pb" 		android:layout_width="fill_parent" 		android:layout_height="wrap_content" 		style="?android:attr/progressBarStyleHorizontal" 		android:visibility="gone" 		android:layout_alignParentBottom="true" >	</ProgressBar> </RelativeLayout>

 WebChromeClient

重写onProgressChanged和onReceivedTitle事件(进度条载入完毕后使用动画渐退)

/** * MyWebChromeClient.java * 版权全部(C) 2012 

 * 创建:cuiran 2012-10-16 下午3:05:34 */package com.cayden.citygirl.activity;import android.app.Activity;import android.view.View;import android.view.animation.Animation;import android.view.animation.AnimationUtils;import android.webkit.WebChromeClient;import android.webkit.WebView;import android.widget.ProgressBar;import android.widget.TextView;/** * TODO * @author cuiran * @version TODO */public class MyWebChromeClient extends WebChromeClient {	private Activity activity; 	private ProgressBar pb; 		private Animation animation; 	private TextView tvtitle; 	public MyWebChromeClient(Activity activity) { 		this.activity = activity; 	} 		@Override 	public void onProgressChanged(WebView view, int newProgress) { 		pb=(ProgressBar)activity.findViewById(R.id.pb); 		pb.setMax(100); 		if(newProgress<100){ 		if(pb.getVisibility()==View.GONE) pb.setVisibility(View.VISIBLE); 		pb.setProgress(newProgress); 		}else{ 		pb.setProgress(100); 		animation=AnimationUtils.loadAnimation(activity, R.anim.animation); 		// 执行动画 		 pb.startAnimation(animation); 		// 将 spinner 的可见性设置为不可见状态 		pb.setVisibility(View.INVISIBLE); 		} 		super.onProgressChanged(view, newProgress); 	} 	@Override 	public void onReceivedTitle(WebView view, String title) { 			tvtitle=(TextView)activity.findViewById(R.id.tvtitle); 				tvtitle.setText(title);		super.onReceivedTitle(view, title);				} 		}

  进度条的动画样式 res/anim/animation.xml

<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"> <alpha android:fromAlpha="1.0" android:toAlpha="0.0" android:duration="700"/> </set>

5、程序启动类

/** * ProgressActivity.java * 版权全部(C) 2012  * 创建:cuiran 2012-10-16 下午3:13:49 */package com.cayden.citygirl.activity;import android.app.Activity;import android.os.Bundle;import android.view.Window;import android.webkit.WebView;/** * TODO * @author cuiran * @version TODO */public class ProgressActivity extends Activity {	private WebView browser; 	@Override 	public void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState); 	getWindow().requestFeature(Window.FEATURE_CUSTOM_TITLE); 		setContentView(R.layout.my_browser); 		getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.broser);		browser = (WebView) findViewById(R.id.webView); 		// currentWebView=browser; 		browser.setWebChromeClient(new MyWebChromeClient(ProgressActivity.this)); 		browser.loadUrl("http://shop.paipai.com/731681975/"); 	}}