android的進度條

1、實現的效果

2、布局代碼

先寫一個my_browser.xml文件 存放WebView

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:orientation="vertical" >

android:id="@+id/webView"

android:layout_width="fill_parent"

android:layout_height="fill_parent" />

進度條布局

然后寫一個broser.xml存放進度條的

android:layout_height="fill_parent">

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"/>

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" >

WebChromeClient

重寫onProgressChanged和onReceivedTitle事件(進度條加載完成后使用動畫漸退)

/**

* MyWebChromeClient.java

* 版權所有(C) 2012

* 創建: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);

// 運行動畫

pb.startAnimation(animation);

// 將 spinner 的可見性設置為不可見狀態

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);

}

}

進度條的動畫樣式 res/anim/animation.xml

android:toAlpha="0.0"

android:duration="700"/>

5、程序啟動類

/**

* ProgressActivity.java

* 版權所有(C) 2012

* 創建: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/");

}

}

總結

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