android异步处理

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

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/hello" />
    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="请输入电话号码"
        />
    <EditText
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
         android:id="@+id/mobienumber"
         android:hint="电话号码"
        />
   
<Button
            android:id="@+id/mobieBtn"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="click"
            android:text="查询" />
</LinearLayout>

 

 

package com.csdn.hbsi;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class MobileselectActivity extends Activity {
    private EditText etn;
 private Button btn_sel;
 
 /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }
    public void click(View v){
     etn = (EditText) findViewById(R.id.mobienumber);
     btn_sel = (Button) findViewById(R.id.mobieBtn);
     String url="http://www.096.me/api.php?phone="+etn.getText().toString().trim()+"&mode=txt";
     System.out.println(url);

     
      As ags=new As(getApplicationContext(),btn_sel);
      ags.execute(url);
     
    }
  
}

 

 

 

package com.csdn.hbsi;

import java.io.ByteArrayOutputStream;
import java.io.InputStream;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;

import android.content.Context;
import android.os.AsyncTask;
import android.widget.Button;
import android.widget.Toast;

public class As extends AsyncTask<String, Void,String>{

 private Button btn_sel;
 private Context context;
 String getStr="";
 public As(Context _context, Button btn){
  this.btn_sel=btn;
  this.context=_context;
 }
 

 @Override
 protected String doInBackground(String... params){
  System.out.println("执行中");
  
  try {
   Thread.sleep(3000);
   HttpClient client= new DefaultHttpClient();
   HttpGet get=new HttpGet(params[0]);
   HttpResponse response = client.execute(get);
   if(response.getStatusLine().getStatusCode()==200){
    HttpEntity he =response.getEntity();
    
    InputStream is=he.getContent();
    getStr=new String(getByteData(is),"GBK");
    
    System.out.println("==="+getStr);
   }
  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  return getStr;
 }

 @Override
 protected void onPreExecute() {
  btn_sel.setText("查询。。。");
  super.onPreExecute();
  
 }

 @Override
 protected void onPostExecute(String result) {

  btn_sel.setText("查询");
  
  System.out.println("sadfasdfasdfasdfas ===="+result);
  //显示一下
  Toast.makeText(context, result, 1).show();
  
  super.onPostExecute(result);
 }
 
  public static byte[] getByteData(InputStream is){
  
   //声明一个ByteArrayOutputStream
   ByteArrayOutputStream bos = new ByteArrayOutputStream();
      try {

   //定义缓冲区
   byte[] buffer = new byte[1024];
   //读取is中的数据，写入到bos中
   int len = -1;
   while ((len = is.read(buffer)) != -1) {

    //写入到bos中
    bos.write(buffer, 0, len);

   }
   
    is.close();
    
    bos.close();
   } catch (Exception e) {
    e.printStackTrace();
   }
  
    return bos.toByteArray();
  
  }

}