0x001

主程序, get请求

package com.gyarmy.testjson;



import java.io.InputStream;

import java.io.UnsupportedEncodingException;

import java.net.HttpURLConnection;

import java.net.MalformedURLException;

import java.net.URL;

import java.net.URLConnection;

import java.net.URLEncoder;



import org.json.JSONArray;

import org.json.JSONException;

import org.json.JSONObject;



import com.gyarmy.testjson.utils.StreamTool;



import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.app.Activity;

import android.text.TextUtils;

import android.view.Menu;

import android.view.View;

import android.widget.EditText;

import android.widget.TextView;

import android.widget.Toast;



public class MainActivity extends Activity {



	protected static final int SUCCESS = 0;

	protected static final int ERROR = 1;

	protected static final int NETWORK_ERROR = 2;

	private EditText edit_city_a;

	private TextView result1_a;

	private TextView result2_a;

	private TextView result3_a;

	private String url_path;

	

	private Handler mHandler = new Handler(){

		@Override

		public void handleMessage(Message msg) {

			// TODO Auto-generated method stub

			super.handleMessage(msg);

			switch (msg.what) {

			case SUCCESS:

				//String data = (String) msg.obj;

				//Toast.makeText(MainActivity.this, data, 0).show();

				//解析json;

				try {

					JSONArray data = (JSONArray)msg.obj;

					String day01 = data.getString(0);

					result1_a.setText(day01);

					

					String day02 = data.getString(1);

					result2_a.setText(day02);

					

					String day03 = data.getString(2);

					result3_a.setText(day03);

				} catch (JSONException e) {

					// TODO Auto-generated catch block

					e.printStackTrace();

				}

				

				

				break;

			case  ERROR:

				Toast.makeText(MainActivity.this, "地址错误!", 0).show();

				break;

				

			case NETWORK_ERROR:

				Toast.makeText(MainActivity.this, "网络连接错误!", 0).show();

				break;

			default:

				break;

			}

			

		}

		

	};

	

	@Override

	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.activity_main);

		

		edit_city_a  = (EditText)findViewById(R.id.edit_city);

		result1_a = (TextView)findViewById(R.id.result1);

		result2_a = (TextView)findViewById(R.id.result2);

		result3_a = (TextView)findViewById(R.id.result3);

		

	}



	

	public void getWeather(View v){

		//Toast.makeText(this, "test", 0).show();

		String city_str = edit_city_a.getText().toString().trim();

		if(TextUtils.isEmpty(city_str)){

			Toast.makeText(this, "请填写城市!", 0).show();

			return;

		}

		//http://wthrcdn.etouch.cn/weather_mini?city=%E4%B8%8A%E6%B5%B7

		

		try {

			url_path = "http://wthrcdn.etouch.cn/weather_mini?city="+URLEncoder.encode(city_str, "UTF-8");

		} catch (UnsupportedEncodingException e) {

			// TODO Auto-generated catch block

			e.printStackTrace();

		}

		

		System.out.println(url_path);

		

		new Thread(){

			public void run() {

				try {

					URL url = new URL(url_path);

					HttpURLConnection conn = (HttpURLConnection)url.openConnection();

					conn.setConnectTimeout(2000);

					conn.setRequestMethod("GET");

					int code = conn.getResponseCode();

					if(200 == code){

						InputStream in = conn.getInputStream();

						String data = StreamTool.decodeStream(in);

						

						JSONObject jsonObj = new JSONObject(data);

						String desc = jsonObj.getString("desc");

						if("OK".equals(desc)){

							

							JSONObject dataObj = jsonObj.getJSONObject("data");

							JSONArray jsonArray = dataObj.getJSONArray("forecast");

							

							Message msg = Message.obtain();

							msg.obj = jsonArray;

							msg.what = SUCCESS;

							mHandler.sendMessage(msg);

							

							

						}else{

							Message msg = Message.obtain();

							msg.what = ERROR;

							mHandler.sendMessage(msg);

						}

						

					

						

					}else{

						Message msg = Message.obtain();

						msg.what = ERROR;

						mHandler.sendMessage(msg);

					}

					

					

				} catch (Exception e) {

					// TODO Auto-generated catch block

					Message msg = Message.obtain();

					msg.what = NETWORK_ERROR;

					mHandler.sendMessage(msg);

					e.printStackTrace();

				}

				

			};

		}.start();

		

	}

	

	@Override

	public boolean onCreateOptionsMenu(Menu menu) {

		// Inflate the menu; this adds items to the action bar if it is present.

		getMenuInflater().inflate(R.menu.main, menu);

		return true;

	}



}

0x002

工具程序, 解析数据

package com.gyarmy.testjson.utils;



import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.io.InputStream;



public class StreamTool {



	public static String decodeStream(InputStream in) throws IOException {

		// TODO Auto-generated method stub

		ByteArrayOutputStream bos = new ByteArrayOutputStream();

		byte[] bytes = new byte[1024];

		int len = 0;

		while((len=in.read(bytes))>0){

			bos.write(bytes);

		}

		String data = bos.toString();

		return data;

		

	}



}