How to solve received memory warning error? - ios

Question

While capturing image from phone camera and uploading to server, app get crashed and getting this error:
[/BuildRoot/Library/Caches/com.apple.xbs/Sources/CoreUI/CoreUI-371.4/Bom/Storage/BOMStorage.c:522] <memory> is not a BOMStorage file
2016-02-19 10:31:53.413 Appname[520:141128] Received memory warning.
Message from debugger: Terminated due to memory issue.
Code:
UIImage *finalImage, *rotatedImage;
finalImage = self.capturedimg;
if (finalImage.imageOrientation == UIImageOrientationRight)
{
rotatedImage = [self imageRotatedByDegrees:finalImage deg:90];
}else if (finalImage.imageOrientation == UIImageOrientationDown)
{
rotatedImage = [self imageRotatedByDegrees:finalImage deg:180];
}else if (finalImage.imageOrientation == UIImageOrientationLeft)
{
rotatedImage = [self imageRotatedByDegrees:finalImage deg:-90];
}else if (finalImage.imageOrientation == UIImageOrientationUp)
{
rotatedImage = [self imageRotatedByDegrees:finalImage deg:360];
}
imageView.image = rotatedImage;
-(void)sendImage:(id)sender{
CGFloat compression = 0.5f;
CGFloat maxCompression = 0.1f;
int maxFileSize = 250*1024;
imageData = UIImageJPEGRepresentation(imageView.image, compression);
while ([imageData length] > maxFileSize && compression > maxCompression)
{
compression -= 0.1;
imageData = UIImageJPEGRepresentation(imageView.image, compression);
}
NSString *dateString = [self.serviceConnector datenow];
NSString *urlString = [NSString stringWithFormat:#"%#",SinglechatImageUpload_Url];
[allObjectArray removeAllObjects];
NSDictionary *tempDict = [NSDictionary dictionaryWithObjectsAndKeys:
// Object and key pairs
dateString, #"imageuploaddate",
self.CaptionTxtfield.text, #"imagecaption",
nil];
[allObjectArray addObject:tempDict];
[self chatimgUrlString:urlString postValue:allObjectArray imageData:imageData];
}
- (void)chatimgUrlString:(NSString*)urlStr postValue:(NSMutableArray*)array imageData:(NSData*)imgData{
NSString *jsonString;
NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:array
options:NSJSONWritingPrettyPrinted
error:&error];
if (!jsonData) {
NSLog(#"Got an error: %#", error);
} else {
jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
}
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:#"%#",urlStr]];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url
cachePolicy:NSURLRequestReloadIgnoringLocalCacheData
timeoutInterval:10];
[request setHTTPMethod:#"POST"];
NSString *boundary = #"---------------------------14737809831466499882746641449";
NSString *contentType = [NSString stringWithFormat:#"multipart/form-data; boundary=%#",boundary];
[request addValue:contentType forHTTPHeaderField: #"Content-Type"];
NSMutableData *body = [NSMutableData data];
[body appendData:[[NSString stringWithFormat:#"\r\n--%#\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"Content-Disposition: form-data; name=\"userfile\"; filename=\".jpg\"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithData:imgData]];
[body appendData:[[NSString stringWithFormat:#"\r\n--%#--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
//json sting parameter
[body appendData:[[NSString stringWithFormat:#"--%#\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"Content-Disposition: form-data; name=\"jsonstring\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[jsonString dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[#"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
// close form
[body appendData:[[NSString stringWithFormat:#"--%#--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPBody:body];
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
if (connection) {
receivedData = nil;
}
}
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
receivedData = [[NSMutableData alloc]init];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{
[receivedData appendData:data];
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{
receivedData = nil;
connection = nil;
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection{
#try {
//send the data to the delegate
id jsonObjects = [NSJSONSerialization JSONObjectWithData:reciveddata options:NSJSONReadingMutableContainers error:nil];
NSLog(#"json : %#",jsonObjects);
}
#catch (NSException *exception) {
NSLog(#"Exception error didfinishload: %#",exception.reason);
receivedData = [[NSMutableData alloc]init];
[self.delegate requestReturnedData:receivedData];
}
}

Answer 1

Try to add Autoreleasepool block in your while loop:
while ([imageData length] > maxFileSize && compression > maxCompression)
{
#autoreleasepool {
compression -= 0.1;
imageData = UIImageJPEGRepresentation(imageView.image, compression);
}
}