Question

在didFinishPickingMediaWithInfo中，我正在规范图像，但是当我拍照时，我收到内存警告并在某些设备中崩溃。为什么呢？

- (void) imagePickerController:(UIImagePickerController *)picker 

didFinishPickingMediaWithInfo:(NSDictionary *)info
    {
    UIImage *image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
        // Save image

        image = [self normalizedImage:image];

      //  UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);
        self.image = image;
        [self salvarImagem:image];
    }

- (UIImage *)normalizedImage:(UIImage*)imgtratar {
    if (imgtratar.imageOrientation == UIImageOrientationUp) return imgtratar; 

    UIGraphicsBeginImageContextWithOptions(imgtratar.size, NO, imgtratar.scale);
    [imgtratar drawInRect:(CGRect){0, 0, imgtratar.size}];
    UIImage *normalizedImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return normalizedImage;
}

编辑：我已经搜索过，解决方案对我不起作用...... 我调试了，错误在

  [imgtratar drawInRect:(CGRect){0, 0, imgtratar.size}];

Answer 1

也许是因为你忘了这行

[self dismissModalViewControllerAnimated:YES];

在UIImage *image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];

之后

和/或压缩并将图像转换为JPEG格式。检查UIImageJPEGRepresentation(UIImage *image, CGFloat compressionQuality)。

N.B。请先搜索现有解决方案。你会在here

中找到一些here，here和很多

Answer 2

我解决了调整图像大小的问题...问题是因为图像太大了

- (UIImage *)normalizedImage:(UIImage*)imgtratar {
    if (imgtratar.imageOrientation == UIImageOrientationUp) return imgtratar; 

    UIGraphicsBeginImageContext(CGSizeMake(117, 175));
    [imgtratar drawInRect:(CGRect){0, 0, 117, 175}];
    UIImage *normalizedImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return normalizedImage;
}

ImagePicker内存警告崩溃

2 个答案: