Könnte jemand mir bei diesem Problem helfen? Ich bin ein wenig neu bei objective c und iOS. Ich habe daran gearbeitet, aber ich kann nicht herausfinden, wie das Problem zu beheben, Meine App ist wirklich einfach, es nur starten Sie die Kamera Bilder machen und senden Sie sie per E-Mail an unseren Server. Dieser Code funktionierte in iOS6 einwandfrei.Speicherwarnung UIImagepickerController IOS 7
Wenn ich Bilder mache, ist mein Speicher Haufenwachstum mit jeder Bildschirmaufnahme und ich bekomme "Received Memory Warning" und schließlich - Beendet wegen Speicherdruck. -
-(void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary *)info
{
[self.popoverController2 dismissPopoverAnimated:true];
NSString *mediaType = [info
objectForKey:UIImagePickerControllerMediaType];
if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) {
_image = [info
objectForKey:UIImagePickerControllerOriginalImage];
_image = [self fixrotation:_image]; //<----- increased memory when UIImageWriteToSavedPhotosAlbum is uncommented IF is comment it doesn't increased memory but after some pictures I start to get "Received Memory Warning" message until the app Crash.
if (_newMedia){
UIImageWriteToSavedPhotosAlbum(_image,
self,@selector(image:finishedSavingWithError:contextInfo:),
nil);
[self dismissViewControllerAnimated:NO completion:nil];
[self performSegueWithIdentifier:@"SeleccionadoCameraR" sender:self];
}else{
[self performSegueWithIdentifier:@"SeleccionadoCameraR" sender:self];
}
}
}
- (UIImage *)fixrotation:(UIImage *)image{
if (image.imageOrientation == UIImageOrientationUp) return image;
CGAffineTransform transform = CGAffineTransformIdentity;
switch (image.imageOrientation) {
case UIImageOrientationDown:
case UIImageOrientationDownMirrored:
transform = CGAffineTransformTranslate(transform, image.size.width, image.size.height);
transform = CGAffineTransformRotate(transform, M_PI);
break;
case UIImageOrientationLeft:
case UIImageOrientationLeftMirrored:
transform = CGAffineTransformTranslate(transform, image.size.width, 0);
transform = CGAffineTransformRotate(transform, M_PI_2);
break;
case UIImageOrientationRight:
case UIImageOrientationRightMirrored:
transform = CGAffineTransformTranslate(transform, 0, image.size.height);
transform = CGAffineTransformRotate(transform, -M_PI_2);
break;
case UIImageOrientationUp:
case UIImageOrientationUpMirrored:
break;
}
switch (image.imageOrientation) {
case UIImageOrientationUpMirrored:
case UIImageOrientationDownMirrored:
transform = CGAffineTransformTranslate(transform, image.size.width, 0);
transform = CGAffineTransformScale(transform, -1, 1);
break;
case UIImageOrientationLeftMirrored:
case UIImageOrientationRightMirrored:
transform = CGAffineTransformTranslate(transform, image.size.height, 0);
transform = CGAffineTransformScale(transform, -1, 1);
break;
case UIImageOrientationUp:
case UIImageOrientationDown:
case UIImageOrientationLeft:
case UIImageOrientationRight:
break;
}
// Now we draw the underlying CGImage into a new context, applying the transform
// calculated above.
CGContextRef ctx = CGBitmapContextCreate(NULL, image.size.width, image.size.height,
CGImageGetBitsPerComponent(image.CGImage), 0,
CGImageGetColorSpace(image.CGImage),
CGImageGetBitmapInfo(image.CGImage));
CGContextConcatCTM(ctx, transform);
switch (image.imageOrientation) {
case UIImageOrientationLeft:
case UIImageOrientationLeftMirrored:
case UIImageOrientationRight:
case UIImageOrientationRightMirrored:
// Grr...
CGContextDrawImage(ctx, CGRectMake(0,0,image.size.height,image.size.width), image.CGImage);
break;
default:
CGContextDrawImage(ctx, CGRectMake(0,0,image.size.width,image.size.height), image.CGImage); //when I use instruments it shows that My VM is because of this
break;
}
// And now we just create a new UIImage from the drawing context
CGImageRef cgimg = CGBitmapContextCreateImage(ctx);//also this line in Instruments
UIImage *img = [UIImage imageWithCGImage:cgimg];
CGContextRelease(ctx);
CGImageRelease(cgimg);
return img;
}
wahrscheinlich ist eine Speicherverwaltung. Ich werde Ihre Hilfe zu schätzen wissen
Führen Sie den statischen Analysator aus, um festzustellen, ob Warnungen vorhanden sind. Dann starten Sie die App in Instruments und suchen Sie nach Lecks und behalten Sie Zyklen. – rmaddy