android用ImageView显示网络图片

1、权限配置

<</SPAN>uses-permission android:name="android.permission.INTERNET"/>

2、从网络获取图片

package cn.jgw.service;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.URL;import cn.jgw.utils.StreamTool;public class ImageService {        public static byte[] getImage(String path) throws Exception{        URL url = new URL(path);        HttpURLConnection conn = (HttpURLConnection) url.openConnection();//基于HTTP协议连接对象        conn.setConnectTimeout(5000);        conn.setRequestMethod("GET");        if(conn.getResponseCode() == 200){            InputStream inStream = conn.getInputStream();            return StreamTool.read(inStream);        }        return null;    }}

package cn.jgw.utils;import java.io.ByteArrayOutputStream;import java.io.InputStream;public class StreamTool {public static byte[] read(InputStream inStream) throws Exception{ByteArrayOutputStream outStream = new ByteArrayOutputStream();byte[] buffer = new byte[1024];int len = 0;while( (len = inStream.read(buffer)) != -1){outStream.write(buffer, 0, len);}inStream.close();return outStream.toByteArray();}}

3、在ImageView中显示图片

try{                byte[] data = ImageService.getImage(path);                Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0, data.length);                imageView.setImageBitmap(bitmap);//显示图片            }catch (Exception e) {                e.printStackTrace();                Toast.makeText(getApplicationContext(), R.string.error, 1).show();}

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