通过URl将服务器的图片下载到本地并压缩

private void downloadServerPic(final String url1) {

new Thread() {

@Override

public void run() {

// 定义一个URL对象

URL url;

try {

url = new URL(url1);

// 打开该URL的资源输入流

InputStream is = url.openStream();

is.close();

// 再次打开RL对应的资源输入流

is = url.openStream();

//创建输出流

FileOutputStream outStream = null;

try {

byte[] bary = readInputStream(is);

File imageFile = new File( Environment.getExternalStorageDirectory() + "/DCIM/UxinUsedCar/"+"share.jpg");

outStream = new FileOutputStream(imageFile);

        //写入数据

        outStream.write(bary);

//getimage 方法见  http://www.cnblogs.com/wangzehuaw/p/4447120.html

        bitMap = getimage( Environment.getExternalStorageDirectory() + "/DCIM/UxinUsedCar/"+"share.jpg");

      //关闭输出流

} catch (Exception e) {

e.printStackTrace();

} finally {

if(outStream != null)

outStream.close();

is.close();

}

} catch (MalformedURLException e) {  

  e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

}

}.start();

}