My Android-App reads image-files from the sd-card and stores the image in a blob in a sqlite database.
Currently i am converting a FileInputStream to a byte array and store this in the blob. A blob cannot exceed the size of 1MB, so in this case i am posting an error-message and cancel the operation.
FileInputStream fis = null;
try {
fis = new FileInputStream(FilePath); // FilePath contains a valid path
} catch (FileNotFoundException e) {
Toast.makeText(MyActivity.this, "File not found: " + FilePath, Toast.LENGTH_LONG).show();
return;
}
BufferedInputStream bis = new BufferedInputStream(fis, 1070);
ByteArrayBuffer bab = new ByteArrayBuffer(128);
int current = 0;
try {
while ((current = bis.read()) != -1) bab.append((byte) current);
} catch (IOException e) {
Toast.makeText(MyActivity.this, "Error reading Picture: " + FilePath, Toast.LENGTH_LONG).show();
return;
}
byte[] imageBa = bab.toByteArray();
if (imageBa.length > 1024*1024)
showErrorDialog();
else {
saveImageInDatabase(imageBa); // sage image byte[] in BLOB-column so sq-lite database
// show image in imageView
imageStream = new ByteArrayInputStream(imageBa);
Bitmap imageBitmap = BitmapFactory.decodeStream(imageStream); // uncompressed imageBitmap has a much bigger size than the image-byte[]
imageView.setImageBitmap(imageBitmap);
}
I want to get rid of the 1MB-limitation and store also bigger images, by reducing the resolution (not the size).
I could go for a solution using the BitmapFactory option inSampleSize to compress an image and / or convert the bitmap back to a byte[], e.g. using bitmap.compress. However, even an uncompressed bitmap created with BitmapFactory has a much bigger size than the original byte [], so i fear that i lose quality.
Any ideas how to solve my issue? Many thanks in advance, Gerhard.
