webView小小结

2013-02-27

webView小总结package com.zhangqu.age.testwebviewimport java.io.BufferedReaderimport java.io.ByteA

webView小总结
package com.zhangqu.age.testwebview;import java.io.BufferedReader;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.net.HttpURLConnection;import java.net.URL;import android.app.Activity;import android.content.Context;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.webkit.WebView;import android.webkit.WebViewClient;import android.widget.AbsoluteLayout;/** * @author 小阿哥 * @des webview介绍。。 QQ:247124629 * @date 2013-2-19 * */public class TestWebViewActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);// //方式1:本地文件。通过文件名。// AbsoluteLayout absLayout=new AbsoluteLayout(this);// absLayout.setBackgroundColor(0xffff0000);// WebView webView=new WebView(this);// webView.getSettings().setJavaScriptEnabled(true); // webView.setBackgroundColor(0x00000000); // webView.loadUrl("file:///android_asset/1.htm"); // webView.setWebViewClient(new WebViewClient(){ // public boolean shouldOverrideUrlLoading(WebView view, String url) {// System.out.println("click.........URL:"+url);// return true; // }// });// // absLayout.addView(webView, new AbsoluteLayout.LayoutParams(700, 400, 50, 50)); // setContentView(absLayout); // //方式2:网络文件。通过URL。。。。// AbsoluteLayout absLayout=new AbsoluteLayout(this);// absLayout.setBackgroundColor(0xffff0000);// WebView webView=new WebView(this);// webView.getSettings().setJavaScriptEnabled(true); // webView.setBackgroundColor(0x00000000); // webView.loadUrl("http://www.baidu.com/"); // webView.setWebViewClient(new WebViewClient(){ // public boolean shouldOverrideUrlLoading(WebView view, String url) {// System.out.println("click.........URL:"+url);// return true; // }// });// // absLayout.addView(webView, new AbsoluteLayout.LayoutParams(700, 400, 50, 50)); // setContentView(absLayout); // //方式3:本地文件。通过文件内容。// String data=getAssetsFileToString("1.htm","gbk",this); // AbsoluteLayout absLayout=new AbsoluteLayout(this);// absLayout.setBackgroundColor(0xffff0000);// WebView webView=new WebView(this);// webView.getSettings().setJavaScriptEnabled(true); // webView.setBackgroundColor(0x00000000);// webView.loadDataWithBaseURL("file:///android_asset/", data, null, "utf-8", null);//一般都是这个编码格式。 // webView.setWebViewClient(new WebViewClient(){ // public boolean shouldOverrideUrlLoading(WebView view, String url) {// System.out.println("click.........URL:"+url);// return true; // }// });// // absLayout.addView(webView, new AbsoluteLayout.LayoutParams(700, 400, 50, 50)); // setContentView(absLayout); //方式4:网络文件。通过文件内容。 Handler.Callback callBack=new Handler.Callback() {@Overridepublic boolean handleMessage(Message msg) {// TODO Auto-generated method stubint what=msg.what;if(what==123){AbsoluteLayout absLayout=new AbsoluteLayout(TestWebViewActivity.this); absLayout.setBackgroundColor(0xffff0000); WebView webView=new WebView(TestWebViewActivity.this); webView.getSettings().setJavaScriptEnabled(true); webView.setBackgroundColor(0x00000000); webView.loadData((String)msg.obj, "text/html", "utf-8"); webView.setWebViewClient(new WebViewClient(){ public boolean shouldOverrideUrlLoading(WebView view, String url) { System.out.println("click.........URL:"+url); return true; } }); absLayout.addView(webView, new AbsoluteLayout.LayoutParams(400, 700, 50, 50)); setContentView(absLayout);}return false;}};final Handler handler=new Handler(callBack); new Thread(new Runnable() {@Overridepublic void run() {// TODO Auto-generated method stubString url="http://www.baidu.com/"; String data=requestWebContent(url,"UTF-8"); Message message=new Message(); message.what=123; message.obj=data; handler.sendMessage(message); }}).start(); } public String requestWebContent(String url,String charset) { boolean usePxoxy=false;HttpURLConnection conn = getUrlConnection(url, usePxoxy);try {int responseCode = conn.getResponseCode();if (responseCode == HttpURLConnection.HTTP_OK) {byte receiverContent[] = getByteArrayFromStream(conn.getInputStream());String content=new String(receiverContent,charset);return content;}} catch (Exception e) {Debug.println("getContentFromUrl Ex:" + e.toString());} finally {if (conn != null) {conn.disconnect();}}return null; } private HttpURLConnection getUrlConnection(String url, boolean useProxy) { final int CONNECTION_TIMEOUT = 5 * 1000; final String USER_AGENT = "IFENG/269013000720 Platform/AndroidV1.5/480x800"; HttpURLConnection connection = null;try {URL httpUrl = new URL(url);connection = (HttpURLConnection) httpUrl.openConnection();if (connection != null) {connection.setConnectTimeout(CONNECTION_TIMEOUT);connection.addRequestProperty("User-Agent", USER_AGENT);}if (connection.usingProxy()) {// Log.d("NetProxy", "Use Proxy");} else {// Log.d("NetProxy", "Don't use Proxy");}} catch (Exception ex) {Debug.println("getUrlConnection EX:" + ex.toString());}return connection;} public static final byte[] getByteArrayFromStream(InputStream inputStream) {byte result[] = null;ByteArrayOutputStream outputStream = new ByteArrayOutputStream();byte buf[] = new byte[1024];int len;try {while ((len = inputStream.read(buf)) != -1) {outputStream.write(buf, 0, len);}outputStream.flush();result = outputStream.toByteArray();outputStream.close();outputStream = null;inputStream.close();} catch (Exception e) {Debug.println("getStreamByteArray().EX:" + e.toString());}return result;} public static String getAssetsFileToString(String filename, String decoder,Context ctx) { StringBuilder sb = new StringBuilder(); InputStream file;try {file = ctx.getAssets().open(filename);BufferedReader br = new BufferedReader(new InputStreamReader(file,decoder)); String row; while((row = br.readLine())!= null) { sb.append(row); } } catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();} return sb.toString(); }}

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webView小小结