首先在AndroidManifest.xml添加网络权限

这是java代码

public class MainActivity extends Activity {     private ImageView imageView;    private String picUrl = "http://a1.eoe.cn/news/2013/0104/20130104080020231.jpg";     @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        imageView = (ImageView) findViewById(R.id.imageView);        getBitmap(picUrl);    }     Handler handler = new Handler() {         @Override        public void handleMessage(Message msg) {            switch (msg.what) {            case 1:                imageView.setImageBitmap(bitmap);                break;            default:                break;            }            super.handleMessage(msg);        }     };    protected Bitmap bitmap;     private void getBitmap(final String url) {        Thread thread = new Thread() {             @Override            public void run() {                URL myFileURL;                try {                    myFileURL = new URL(url);                    HttpURLConnection conn = (HttpURLConnection) myFileURL                            .openConnection();                    conn.setConnectTimeout(6 * 1000);                    conn.setDoInput(true);                    conn.setUseCaches(false);                    InputStream is = conn.getInputStream();                    bitmap = BitmapFactory.decodeStream(is);                    is.close();                    Message message = handler.obtainMessage();                    message.what = 1;                    handler.sendMessage(message);                } catch (Exception e) {                    e.printStackTrace();                }                super.run();            }        };        thread.start();        thread = null;    } }