AndroidTouchGalleryLibrary 是一个非常好用的库，
但是使用的时候，需要小心处理，容易引发OutOfMemoryError，同时使用UrlTouchImageView的时候，
从网络下载是没有缓存的，因此每次都是新加载图片，同时使用在线家在较大图片容易导致程序挂掉
因此将原先的UrlTouchImageView类中的此段代码更换
原代码：
//No caching load
public class ImageLoadTask extends AsyncTask<String, Integer, Bitmap>
{
@Override
protected Bitmap doInBackground(String... strings) {
String url = strings[0];
Bitmap bm = null;
try {
URL aURL = new URL(url);
URLConnection conn = aURL.openConnection();
conn.connect();
InputStream is = conn.getInputStream();
int totalLen = conn.getContentLength();
InputStreamWrapper bis = new InputStreamWrapper(is, 8192, totalLen);
bis.setProgressListener(new InputStreamProgressListener()
{
@Override
public void onProgress(float progressValue, long bytesLoaded,
long bytesTotal)
{
publishProgress((int)(progressValue * 100));
}
});
bm = BitmapFactory.decodeStream(bis);
bis.close();
is.close();
} catch (Exception e) {
e.printStackTrace();
}
return bm;
} @Override
protected void onPostExecute(Bitmap bitmap) {
if (bitmap == null)
{
mImageView.setScaleType(ScaleType.CENTER);
bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.no_photo);
mImageView.setImageBitmap(bitmap);
}
else
{
mImageView.setScaleType(ScaleType.MATRIX);
mImageView.setImageBitmap(bitmap);
}
mImageView.setVisibility(VISIBLE);
mProgressBar.setVisibility(GONE);
} @Override
protected void onProgressUpdate(Integer... values)
{
mProgressBar.setProgress(values[0]);
}
}
更换为：
//No caching load
public class ImageLoadTask extends AsyncTask<String, Integer, Bitmap>
{
@Override
protected Bitmap doInBackground(String... strings) {
String url = strings[0];
Bitmap bm = null;
try {
URL aURL = new URL(url);
URLConnection conn = aURL.openConnection();
conn.connect();
InputStream is = conn.getInputStream();
int totalLen = conn.getContentLength();
InputStreamWrapper bis = new InputStreamWrapper(is, 8192, totalLen);
bis.setProgressListener(new InputStreamProgressListener()
{
@Override
public void onProgress(float progressValue, long bytesLoaded,
long bytesTotal)
{
publishProgress((int)(progressValue * 100));
}
});
BitmapFactory.Options options=new BitmapFactory.Options();
options.inTempStorage = new byte[100*1024];
options.inPreferredConfig = Bitmap.Config.RGB_565;
options.inPurgeable = true;
options.inSampleSize = 2;//压缩
options.inInputShareable = true;
bm = BitmapFactory.decodeStream(bis, null, options);
bis.close();
is.close();
} catch (Exception e) {
e.printStackTrace();
}
return bm;
} @Override
protected void onPostExecute(Bitmap bitmap) {
if (bitmap == null)
{
mImageView.setScaleType(ScaleType.CENTER);
bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.no_photo);
mImageView.setImageBitmap(bitmap);
}
else
{
mImageView.setScaleType(ScaleType.MATRIX);
mImageView.setImageBitmap(bitmap);
}
mImageView.setVisibility(VISIBLE);
mProgressBar.setVisibility(GONE);
} @Override
protected void onProgressUpdate(Integer... values)
{
mProgressBar.setProgress(values[0]);
}
}