Android，机器狗应用

源码如下：

package com.wyl.jqr;

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

import com.example.tulinjiqiren.R;
import com.google.gson.Gson;

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends ActionBarActivity {
	Button btn;
	Button btn2;
	EditText et;
	TextView tv;
	myHandler handler = new myHandler();
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		btn = (Button)findViewById(R.id.btn01);
		btn2 = (Button)findViewById(R.id.btn02);
		et = (EditText)findViewById(R.id.editText01);
		tv = (TextView)findViewById(R.id.textview02);//用来赋值
		MyOnclickListener l = new MyOnclickListener();
		btn.setOnClickListener(l);
		btn2.setOnClickListener(l);
	}

	class MyOnclickListener implements OnClickListener{
		@Override
		public void onClick(View view) {
			if(view.getId()==R.id.btn01){
				//1.获取录入的问题
				String question = et.getText().toString();
				//2.访问网络
				//主线程不能够访问网络，由此，需要借助开启新线程和handler的方式
				myThread myThread = new myThread();
				myThread.start();
				System.out.println("发送请求的线程："+Thread.currentThread().getName());
			}else if(view.getId()==R.id.btn02){
				//清空edittext
				System.out.println("清楚的线程："+Thread.currentThread().getName());
				et.setText("");
			}
		}
	}
	class myHandler extends Handler{
		@Override
		public void handleMessage(Message msg) {
			String daan = (String)msg.obj;
			if(daan == "" || daan.equals(null)){
				daan = "暫時不支持該轉換";
			}
			System.out.println("myHandler()方法的线程："+Thread.currentThread().getName());
			tv.setText(daan);
		}
	}
	class myThread extends Thread{

		@Override
		public void run() {
			//访问网络
			System.out.println("run()的线程："+Thread.currentThread().getName());
			String APIKEY = "e59219b3f450256c2a3da7157ae651f2";
		    String INFO;
		    String getURL;
		    URL getUrl;
		    String question = et.getText().toString();//获取前台的问题
		    try {
				INFO = URLEncoder.encode(question, "utf-8");//需要改造
				getURL = "http://www.tuling123.com/openapi/api?key=" + APIKEY + "&info=" + INFO;
			    getUrl = new URL(getURL);
			    HttpURLConnection connection = (HttpURLConnection) getUrl.openConnection();
			    connection.connect(); 

			    // 取得输入流，并使用Reader读取
			    BufferedReader reader = new BufferedReader(new InputStreamReader( connection.getInputStream(), "utf-8"));
			    StringBuffer sb = new StringBuffer();
			    String line = "";
			    while ((line = reader.readLine()) != null) {
			        sb.append(line);
			    }
			    reader.close();
			    // 断开连接
			    connection.disconnect();
			    System.out.println("获取到的答案"+sb);
			    //sb是json格式的，需要做轉化，
			    Gson gson = new Gson();
			    String sb2 = sb.toString();
			    System.out.println("sb2的值："+sb2);
			    myBean rtn = gson.fromJson(sb2, myBean.class);
			    System.out.println("rtn的值："+rtn);
			    String text = rtn.getText();
			    System.out.println("text的值："+text);
			    //因为本线程workThread，不能够直接把值返回到UI中，所以把答案放到队列里，
			    Message msg = handler.obtainMessage();
			    msg.obj = text;//把轉化後的答案綁定到msg上
			    handler.sendMessage(msg);
			} catch (UnsupportedEncodingException e) {
				e.printStackTrace();
			} catch (MalformedURLException e) {
				e.printStackTrace();
			} catch (IOException e) {
				e.printStackTrace();
			} 

		}
	}
}

　　myBean.java

因为用到了Gson来解析，所以根据返回的json字符串的key来写一个bean。

package com.wyl.jqr;

public class myBean {
	String code;
	String text;
	public String getCode() {
		return code;
	}
	public void setCode(String code) {
		this.code = code;
	}
	public String getText() {
		return text;
	}
	public void setText(String text) {
		this.text = text;
	}

}