如何从android中的特定url读取图像

Question

如何从android中的特定网址读取图片？

Answer 1

使用此

URL url = new URL(imageUrl);
HttpURLConnection connection  = (HttpURLConnection) url.openConnection();

InputStream is = connection.getInputStream();
Bitmap img = BitmapFactory.decodeStream(is);  

imageView.setImageBitmap(img );

Answer 2

下面的代码应该可以帮助您阅读图像。但请记住，如果你在UI线程中执行此操作，那么它会挂起UI。您应该始终打开一个新线程并在该线程中加载图像。因此，您的应用始终保持响应。

InputStream is = null;
BufferedInputStream bis = null;
Bitmap bmp = null;
try {
   URLConnection conn = url.openConnection();
   conn.connect();
   is = conn.getInputStream();
   bis = new BufferedInputStream( is );
   bmp = BitmapFactory.decodeStream( bis );
} catch (MalformedURLException e) {

} catch (IOException e) {

} finally {
   try {
      is.close();
      bis.close();
   } catch (IOException e) {

   }
}
imageView.setImageBitmap( bmp );