crop and resize image that is selected from gallery or camera

Question

I am new to iOS development and I really need some help in a task. I need to know how does the cropping and re-sizing image is done in Objective-C. For registration I need to select a profile image and then I want to crop and resize it, But I am unaware how to do it. I have seen many source codes in Github and at SO but none of them seems to help out. Can anyone guide me how does the cropping image work in iOS?

Here is the screenshot of my page I'm working on-

[use this lib](https://www.cocoacontrols.com/controls/tocropviewcontroller) — Fahim Parkar, Jul 16 '16 at 09:07
I am using This lib https://github.com/kishikawakatsumi/PEPhotoCropEditor easy to use and easy to modify according to requirements — Rahul Vyas, Jul 16 '16 at 09:32

score 2 · Answer 1 · answered Jul 16 '16 at 09:11

2

Why you are not using standard UIImagePickerController? If you set imagePicker.allowsEditing = YES; and then in imagePickerController:didFinishPickingMediaWithInfo delegate method get

UIImage *newImage = info[UIImagePickerControllerEditedImage];

you'll get the image cropped by user.

answered Jul 16 '16 at 09:11

Sunny

137
7

anything else without it ? – simer kaur Jul 16 '16 at 12:10
Do you need a separate peace of code for image cropping? I read, you've already searched SO, but have you tried [this](http://stackoverflow.com/a/7704399/3102949) ? – Sunny Jul 16 '16 at 14:32

score 1 · Answer 2 · edited Jul 16 '16 at 09:06

1

you can use this function Pass an image and size in it and get image in return.

+ (UIImage*)imageWithImage:(UIImage*)image 
               scaledToSize:(CGSize)newSize;

{

   UIGraphicsBeginImageContext( newSize );

   [image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];

   UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();

   UIGraphicsEndImageContext();

   return newImage;

}

edited Jul 16 '16 at 09:06

Bhavin Bhadani

22,224
10
78
108

answered Jul 16 '16 at 09:04

Krish Solanki

269
4
11

I have to crop the image not only resize it – simer kaur Jul 16 '16 at 09:39

crop and resize image that is selected from gallery or camera

2 Answers2