安卓开发--HttpDemo01

package com.cnn.httpdemo01;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;


public class MainActivity extends Activity {
	Button button;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        button = (Button) findViewById(R.id.button1);
        button.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO 自动生成的方法存根
				Intent intent = new Intent(MainActivity.this, BaiDUActivity.class);
				startActivity(intent);
			}
		});
    }

}

　　

package com.cnn.httpdemo01;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import android.os.Handler;
import android.webkit.WebView;

public class HttpThread extends Thread {
	private WebView webView;
	private String strURL;
	private Handler handler;
	
	public HttpThread(WebView webView,String strURL,Handler handler){
		this.webView=webView;
		this.strURL=strURL;
		this.handler=handler;
	}
	
	@Override
	public void run() {
		URL url;
		try {
			url=new URL(strURL);
			HttpURLConnection connection=(HttpURLConnection) url.openConnection();
			connection.setReadTimeout(5000);
			connection.setRequestMethod("GET");
			final StringBuffer stringBuffer = new StringBuffer();
			BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
			String str;
			while ((str=bufferedReader.readLine())!=null) {
				stringBuffer.append(str);				
			}
			handler.post(new Runnable() {
				
				@Override
				public void run() {
					// TODO 自动生成的方法存根
					webView.loadData(stringBuffer.toString(), "text/html;charset=utf-8", null);
				}
			});
			
		} catch (MalformedURLException e) {
			// TODO 自动生成的 catch 块
			e.printStackTrace();
		} catch (IOException e) {			
			// TODO 自动生成的 catch 块
			e.printStackTrace();
		}
		
	}
}

　　

package com.cnn.httpdemo01;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.webkit.WebView;

public class BaiDUActivity extends Activity {
	private WebView webView;
	private String strURL;
	private Handler handler = new Handler();
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO 自动生成的方法存根
		super.onCreate(savedInstanceState);
		setContentView(R.layout.httpbaidu);
		
		webView=(WebView) findViewById(R.id.webView1);
		strURL = "http://www.baidu.com/";
		new HttpThread(webView, strURL, handler).start();
	}
	

}

　　

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.cnn.httpdemo01.MainActivity" >

    <Button
        android:id="@+id/button1"
        style="?android:attr/buttonStyleSmall"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:text="百度" />

</RelativeLayout>

　　

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <WebView
        android:id="@+id/webView1"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>