bmpFactoryOptions不起作用，不知道为什么

Question

I use the following code to get a Blob back from my SQLite database and get back a bitmap. My problem is that the reconstructed bitmap is larger than the original picture (input). It seems that my BitmapFactory.Options isn't working, but I have no idea what is wrong, nor am I getting an error. What is wrong with this code?

byte[] blob = contact.getMP();
ByteArrayInputStream inputStream = new ByteArrayInputStream(blob);
BitmapFactory.Options bmpFactoryOptions = new BitmapFactory.Options();
bmpFactoryOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;
bmpFactoryOptions.inScaled = false;
bmpFactoryOptions.outHeight = 240;
bmpFactoryOptions.outWidth = 320;
Bitmap bitmap = BitmapFactory.decodeStream(inputStream, null, bmpFactoryOptions);


try {
FileOutputStream out = new FileOutputStream("mnt/sdcard/test5.png");                            bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
} catch (Exception e) {
e.printStackTrace();
}

When I check the output my 320 x 240 picture is 427 x 320. I don't want to use Bitmap.createScaledBitmap because it messes up the quality.

Answer 1

你必须传递给decodeStream才能工作

Bitmap bitmap = BitmapFactory.decodeStream(inputStream, null, bmpFactoryOptions);