webview example

在WebView的设计中，不是什么事都要WebView类干的，有些杂事是分给其他人的，这样WebView专心干好自己的解析、渲染工作就行了。WebViewClient就是帮助WebView处理各种通知、请求事件的，具体来说包括：

  onLoadResource

  onPageStart

  onPageFinish

  onReceiveError

  onReceivedHttpAuthRequest



WebChromeClient是辅助WebView处理Javascript的对话框，网站图标，网站title，加载进度等



  onCloseWindow(关闭WebView)

  onCreateWindow()

  onJsAlert (WebView上alert是弹不出来东西的，需要定制你的WebChromeClient处理弹出)

  onJsPrompt

  onJsConfirm

  onProgressChanged

  onReceivedIcon

  onReceivedTitle

 

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example:

 

 

package com.webview;

import android.app.Activity;
import android.os.Bundle;
import android.view.Window;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;

public class TestWebView extends Activity {
 final Activity activity = this; 

    @Override

    public void onCreate(Bundle savedInstanceState) 

    { 
        super.onCreate(savedInstanceState); 
        this.getWindow().requestFeature(Window.FEATURE_PROGRESS); 
        setContentView(R.layout.main); 

        WebView webView = (WebView) findViewById(R.id.webView); 
        webView.getSettings().setJavaScriptEnabled(true); 

        /*title loading bar*/
        webView.setWebChromeClient(new WebChromeClient() { 
            public void onProgressChanged(WebView view, int progress) 
            { 
                activity.setTitle("Loading..."); 
                activity.setProgress(progress * 100); 
                if(progress == 100) 
                    activity.setTitle(R.string.app_name); 
            } 
        }); 

        webView.setWebViewClient(new WebViewClient() { 
            @Override
            public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) 
            { 
                // Handle the error 
            } 
            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) 
            { 
                view.loadUrl(url); 
                return true; 
            } 
        }); 

        webView.loadUrl("http://www.google.com.hk"); 

    } 

}