@SuppressLint("NewApi")
@Override
public CustomDrawable doDecode(byte[] bytes, DecodeInfo decodeInfo, UrlSizeKey key, int from) {
long threadId = Thread.currentThread().getId();
int viewWidth = key.mViewWidth;
int viewHeight = key.mViewHeight;
Options opts = decodeInfo.mBitmapOptions;
opts.inJustDecodeBounds = true;
opts.inSampleSize = 1;
opts.outWidth = -1;
opts.outHeight = -1;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
opts.inBitmap = null;
}
BitmapFactory.decodeByteArray(bytes, 0, bytes.length, opts);
int bitmapWidth = opts.outWidth;
int bitmapHeight = opts.outHeight;
ImageLoaderLog.d(TAG, key.mUrl);
ImageLoaderLog.d(TAG, threadId + " bitmap width:" + bitmapWidth + ",height:" + bitmapHeight);
ImageLoaderLog.d(TAG, threadId + " view width:" + viewWidth + ",height:" + viewHeight);
if (bitmapWidth <= 0 || bitmapHeight <= 0) {
return null;
}
int sampleSize = getSampleSize(decodeInfo, bitmapWidth, bitmapHeight, viewWidth, viewHeight);
bitmapWidth /= sampleSize;
bitmapHeight /= sampleSize;
ImageLoaderLog.d(TAG, threadId + " sampleSize:" + sampleSize);
opts.inJustDecodeBounds = false;
opts.inSampleSize = sampleSize;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
opts.inMutable = true;
opts.inBitmap =
ImageLoader.getInstance().mBitmapPool.get(bitmapWidth, bitmapHeight, false, false);
}
Bitmap bm = null;
try {
bm = BitmapFactory.decodeByteArray(bytes, 0, bytes.length, opts);
if (sampleSize > 1) {
saveToDisk(bm, key);
}
} catch (Exception e) {
ImageLoaderLog.d(TAG, threadId + " bitmap decode error");
e.printStackTrace();
return null;
}
if (bm != null) {
ImageLoaderLog.d(
TAG, threadId + " after bitmap width:" + bm.getWidth() + ",height:" + bm.getHeight());
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
BitmapLock.lockBitmap(bm);
}
}
BitmapDrawable bd = BitmapDrawableFactory.createBitmapDrawable(bm);
return bd;
}
/*
压缩存卡
*/
private void saveToDisk(Bitmap bm, UrlSizeKey key) {
if (bm == null) {
return;
}
try {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG, 100, baos);
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
ImageLoader.getInstance().mDiskLruCache.put(key.toString(), bais);
} catch (Exception e) {
}
}