I have a decent set of code to handle the Intent, absolutely stock, using
AsyncTask to process the result of the download.
This works perfectly when the selected photo is anywhere on the phone, but
Gallery also shows my lovely collection of 27,000 photos. When I select an
image from there, Android kindly downloads the picture onto the phone.
However, nearly every time, that photo will fail to display - there is data
there, but it fails trying to extract the bitmap, which for the moment I am
using
Watching what it is going on, my educated guess is that OnActivityResult
returns with RESULT_LOAD_IMAGE and RESULT_OK after the file has been
created locally, but not before the file has completed downloading. (I'm
going to hack a time delay loop to test this theory).
Is this a) An Android/Gallery bug?
b) The wrong event to monitor and there is actually another event
emitted by the gallery process?
c) The right event but there is some data in the intent.Data that
I can check to find out if the downloaded file is complete (e.g. a embedded
length and an actual length?)
d) Working as designed and I should actually put in a hack to
work around like a test every second to see if I finally get a picture
(expensive!)?
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Log.i(TAG,"Begin onActivityResult");
// When an Image is picked
if (requestCode == RESULT_LOAD_IMG && resultCode == RESULT_OK
&& null != data) {
// Get the Image from data
Log.i(TAG, "Believe I have something useful to load");
Uri selectedImage = data.getData();
BackgroundGetImage doGetImage = new
BackgroundGetImage(getActivity(),"Please wait...");
doGetImage.delegate = this;
doGetImage.execute(selectedImage);
} else {
Toast.makeText(getActivity(), "You haven't picked Image",
Toast.LENGTH_LONG).show();
}
}
@Override
protected Bitmap doInBackground(Uri... image) {
Log.i(TAG,"Getting image info");
String[] filePathColumn = { MediaStore.Images.Media.DATA };
// Get the cursor
Cursor cursor = getContext().getContentResolver().query(image[0],
filePathColumn, null, null, null);
// Move to first row
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
if (columnIndex < 0) {
Log.i(TAG, "Invalid image");
return null;
}
imgDecodableString = cursor.getString(columnIndex);
cursor.close();
Log.i(TAG, "Getting thumbnail");
Bitmap ThumbImage =
ThumbnailUtils.extractThumbnail(BitmapFactory.decodeFile(imgDecodableString),
THUMBSIZE, THUMBSIZE);
if (ThumbImage != null) {
Log.i(TAG, "Got thumbnail");
} else {
Log.i(TAG, "Thumbnail null");
}
return ThumbImage;
}
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