标签: imagehandler

我需要在列表页面中显示来自api的图像列表.为此,我使用了两种方法.

第一种方法:
通过将url转换为字节数组,然后将其转换为位图.请找到以下代码..

URL imageUrl = new URL(url);
URLConnection ucon = imageUrl.openConnection();

InputStream is = ucon.getInputStream();
BufferedInputStream bis = new BufferedInputStream(is);

ByteArrayBuffer baf = new ByteArrayBuffer(500);
int current = 0;
while ((current = bis.read()) != -1) {
     /* This approach slowdown the process*/
     baf.append((byte) current);
}

byte[] img_ary= baf.toByteArray();

将字节数组转换为位图:

ByteArrayInputStream imageStream = new ByteArrayInputStream(
                    imgUrl);
Bitmap theImage = BitmapFactory.decodeStream(imageStream);

第二种方法:
基于高度和宽度的图像缩放

private static final String TAG_iamge = "Image";
private static final int IO_BUFFER_SIZE = 4 * 1024;

public static …