@Override
public CachedImage read(CachedImageKey key) {
long startRead = System.currentTimeMillis();
String realPath = getRealPath(key);
if (realPath == null) {
return null;
}
File file = new File(realPath);
byte[] fileBytes = null;
InputStream fis = null;
try {
fis = new FileInputStream(file);
fis = new BufferedInputStream(fis, 8192);
int offset = 0;
int byteCount = (int) file.length();
int readCount = 0;
fileBytes = new byte[byteCount];
while ((readCount = fis.read(fileBytes, offset, byteCount)) > 0) {
offset += readCount;
byteCount -= readCount;
}
} catch (FileNotFoundException e) {
if (Logger.isDebug()) e.printStackTrace();
} catch (IOException e) {
if (Logger.isDebug()) e.printStackTrace();
} catch (Exception e) {
if (Logger.isDebug()) e.printStackTrace();
} finally {
if (fis != null) {
try {
fis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
BitmapFactory.Options options = new BitmapFactory.Options();
// 先指定原始大小
options.inSampleSize = 1;
// 只进行大小判断
options.inJustDecodeBounds = true;
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
BitmapFactory.decodeByteArray(fileBytes, 0, fileBytes.length, options);
long bitmapSize = ImageUtil.calculateBitmapSize(options);
if (bitmapSize >= BIG_IMG_SIZE_LEVEL) {
options.inSampleSize = ImageUtil.getScaleSampleSize(options, 120);
if (Logger.isDebug()) Log.d(TAG, "compress local big bitmap");
}
options.inJustDecodeBounds = false;
Bitmap bitmap = BitmapFactory.decodeByteArray(fileBytes, 0, fileBytes.length, options);
CachedImage wrap = new CachedImage(bitmap);
long endRead = System.currentTimeMillis();
if (Logger.isDebug()) Log.d(TAG, "read local bitmap use time: " + (endRead - startRead) + "ms");
return wrap;
}
