AsyncTask简单获取网络图片的例子

//首先呢，添加网络权限

android.permission.INTERNET

//然后，布局View

img=(Image)findViewById(R.id.imageView1);

btn=(Button)findViewById(R.id.button1);

btn.setOnClickListener(new View.OnClickListener(){

  public void onClick(View v){

    String path=”网络图片路径”;

    new DemoTask().execute(path);

  }

});

//最后：创建一个类继承AsyncTask

public class DemoTask extends AsyncTask(String, Void, Bitmap){

  //重写doInBackground来进行任务

  protected Bitmap doInBackground(String… params){

    HttpClient httpClient = new DefaultHtppClient();

    HttpGet httpGet = new HttpGet(params[0]);

    Bitmap bitmap=null;

    try{

      HttpResponse httpResponse = httpClient.execute(httpGet);

      if(httpResponse.getStatusLine().getStatusCode==200){

        //同样，在这里可以获取到很多东西

        //例如输入流：inputStream=httpResponse.getEntity().getContent();

        HttpEntity httpEntity = HttpResponse.getEntity();

        byte [] data = EntityUtils.toByteArray(httpEntity);

        bitmap=BitmapFactory.decodeByteArray(data, 0, data.length);

      }

    }catch(Exception e){

        e.printStackTrace();

    }

    return bitmpa;

  }

  //重写onPostExecute来更新View

  protected void onPostExecute(Bitmap bm){

    super.onPostExecute(result);

    img.setImageBitmap(bm);

  }

}

AsyncTask简单获取网络图片的例子,布布扣,bubuko.com

AsyncTask简单获取网络图片的例子

原文：http://www.cnblogs.com/hualongbei/p/3678151.html