Android读取本地或网络图片并转换为Bitmap

/** 
  * 得到本地或者网络上的bitmap url - 网络或者本地图片的绝对路径,比如: 
  * 
  * A.网络路径: url="http://blog.foreverlove.us/girl2.png" ; 
  * 
  * B.本地路径:url="file://mnt/sdcard/photo/image.png"; 
  * 
  * C.支持的图片格式 ,png, jpg,bmp,gif等等 
  * 
  * @param url 
  * @return 
  */ 
 public static Bitmap GetLocalOrNetBitmap(String url) 
 { 
  Bitmap bitmap = null; 
  InputStream in = null; 
  BufferedOutputStream out = null; 
  try 
  { 
   in = new BufferedInputStream(new URL(url).openStream(), Constant.IO_BUFFER_SIZE); 
   final ByteArrayOutputStream dataStream = new ByteArrayOutputStream(); 
   out = new BufferedOutputStream(dataStream, Constant.IO_BUFFER_SIZE); 
   copy(in, out); 
   out.flush(); 
   byte[] data = dataStream.toByteArray(); 
   bitmap = BitmapFactory.decodeByteArray(data, 0, data.length); 
   data = null; 
   return bitmap; 
  } 
  catch (IOException e) 
  { 
   e.printStackTrace(); 
   return null; 
  } 
 }