android网络编程（二）HttpURLConnection GET

先上效果图：
[img]

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package com.amaker.http1;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;

import org.apache.http.protocol.HTTP;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
/**
 * HttpURLConnection
 * @author zzl
 *
 */
public class MainActivity extends Activity {
	private TextView tv;
	private Button btn_get;
	private String resultData = "";

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		tv = (TextView) findViewById(R.id.tv);
		btn_get = (Button) findViewById(R.id.button1);
		btn_get.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				try {
					tv.setText(requestByGet());
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	

	public String requestByGet() throws Exception {

		String path = "http://open.ifenghui.cn/mobilecms/interface/mobile.action?code=888032100100&m=get_coolimages&p=1&filter=all";
		URL url = new URL(path);
		// 使用HttpURLConnection打开连接
		HttpURLConnection urlConn = (HttpURLConnection) url.openConnection();
		// 得到读取的内容(流)
		InputStreamReader in = new InputStreamReader(urlConn.getInputStream());
		// 为输出创建BufferedReader
		BufferedReader buffer = new BufferedReader(in);
		String inputLine = null;
		// 使用循环来读取获得的数据
		while (((inputLine = buffer.readLine()) != null)) {
			// 我们在每一行后面加上一个"\n"来换行
			resultData += inputLine + "\n";
		}
		// 关闭InputStreamReader
		in.close();
		// 关闭http连接
		urlConn.disconnect();
		return resultData;
	}

}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
	xmlns:android="http://schemas.android.com/apk/res/android"
	android:orientation="vertical"
	android:layout_width="fill_parent"
	android:layout_height="fill_parent">
	<ScrollView
		android:id="@+id/sv"
		android:layout_width="wrap_content"
		android:layout_height="wrap_content"
		xmlns:android="http://schemas.android.com/apk/res/android"
		android:layout_x="0px"
		android:layout_y="20px">
		<TextView
			android:layout_width="fill_parent"
			android:layout_height="wrap_content"
			android:id="@+id/tv"
			android:text="@string/hello" />
	</ScrollView>
	<Button
		android:text="HttpURLConnection-GET请求"
		android:id="@+id/button1"
		android:layout_width="wrap_content"
		android:layout_height="wrap_content" />
</LinearLayout>

AndroidManifest.xml：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.amaker.http1"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="10" />

    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".MainActivity"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>
     <!--不要忘记设置网络访问权限-->
    <uses-permission android:name="android.permission.INTERNET"></uses-permission> 
</manifest>