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>