objective c - Annoying error: Corrupt JPEG data: premature end of data segment -

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this last error message before submit app apple (hopefully) , it's driving me crazy. when saving image phone, corrupts file. when tried open file, gives me error corrupt jpeg data: premature end of data segment , crashes.

here's code save image: 

- (void)imagepickercontroller:(uiimagepickercontroller *)picker didfinishpickingimage:(uiimage *)image editinginfo:(nsdictionary *)editinginfo { [picker.parentviewcontroller dismissmodalviewcontrolleranimated:no];  uploadimage = image; int orient = uploadimage.imageorientation; nsstring *theorientation = [nsstring stringwithformat: @"%d", orient];  nsstring *latestidquery = @""; nsarray *results = [database executequery:@"select * processes order id desc limit 0,1"];    (nsdictionary *row in results) {     latestidquery = [row valueforkey:@"id"]; }  int latestid = [latestidquery intvalue];  int newid = latestid + 1;  nsstring *newidstring = [[nsstring alloc] initwithformat:@"%d", newid]; nsstring *imageurl = [nsstring stringwithformat:@"documents/%@_process.jpg",newidstring];  nslog(@"saving here... %@", imageurl);  nsstring *uploadimagepath = [nsstring stringwithformat:@"%@_process.jpg",newidstring];  nsstring  *jpgpath = [nshomedirectory() stringbyappendingpathcomponent:imageurl]; nslog(@"needs write this: %@", jpgpath); [uiimagejpegrepresentation(uploadimage, 1.0) writetofile:jpgpath atomically:yes];  [database executenonquery:@"insert processes (image, album, status, orient, ready) values (?, ?, ' in queue', ?, 'no');", uploadimagepath, selectedid, theorientation];  tableviewappdelegate *dataceter = (tableviewappdelegate *)[[uiapplication sharedapplication] delegate]; dataceter.datasix = nil; nsstring *databaseurl = [nsstring stringwithformat:@"%@_process.jpg",newidstring]; dataceter.datasix = databaseurl;  [self showcaption];  }

is there better method in saving images won't corrupt? also, how check image corrupt never crash again? i've heard imagedata should start ff d8 , end d9 ff.. that.

thanks
coulton

your code assumes goes well, should check return values , errors. in particular, on ios not allowed write home directory. file not saved @ all.

you should use documents directory, , verify file written without errors. writetofile: call returns bool indicating success.


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