iphone上实现很简单，一行代码：

imageView.image =[UIImage imageWithContentsOfURL:theURL];

android：

两种方法：

Bitmap bimage=  getBitmapFromURL(bannerpath);image.setImageBitmap(bimage); public static Bitmap getBitmapFromURL(String src) {        try {            Log.e("src",src);            URL url = new URL(src);            HttpURLConnection connection = (HttpURLConnection) url.openConnection();            connection.setDoInput(true);            connection.connect();            InputStream input = connection.getInputStream();            Bitmap myBitmap = BitmapFactory.decodeStream(input);            Log.e("Bitmap","returned");            return myBitmap;        } catch (IOException e) {            e.printStackTrace();            Log.e("Exception",e.getMessage());            return null;        }    }

or try it

 

public static Bitmap loadBitmap(String url) {    Bitmap bitmap = null;    InputStream in = null;    BufferedOutputStream out = null;    try {        in = new BufferedInputStream(new URL(url).openStream(), IO_BUFFER_SIZE);        final ByteArrayOutputStream dataStream = new ByteArrayOutputStream();        out = new BufferedOutputStream(dataStream, IO_BUFFER_SIZE);        copy(in, out);        out.flush();        final byte[] data = dataStream.toByteArray();        BitmapFactory.Options options = new BitmapFactory.Options();        //options.inSampleSize = 1;        bitmap = BitmapFactory.decodeByteArray(data, 0, data.length,options);    } catch (IOException e) {        Log.e(TAG, "Could not load Bitmap from: " + url);    } finally {        closeStream(in);        closeStream(out);    }    return bitmap;}

 

 

 

方法2

 

Drawable drawable = LoadImageFromWebOperations(bannerpath);    image.setImageDrawable(drawable);     private Drawable LoadImageFromWebOperations(String url)    {         try         {             InputStream is = (InputStream) new URL(url).getContent();             Drawable d = Drawable.createFromStream(is, "src name");             return d;         }catch (Exception e) {             System.out.println("Exc="+e);             return null;         }     }

 

搞定！