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iOS Build a Self-Destructing Message iPhone App Capturing Photo and Video Using UIImagePickerController Resizing an Image and Getting Ready to Send

Caleb Kleveter
MOD
Caleb Kleveter
Treehouse Moderator 37,862 Points
Posted by Caleb Kleveter
Caleb Kleveter
Treehouse Moderator 37,862 Points

I feel like I don't have enough information.

Is it image = nil? or maybe UIImage == 0? And what about self?

LatergramViewController.m 
#import "LatergramViewController.h"

@implementation LatergramViewController

- (IBAction)upload {

  UIImage *image = self.imageField.image;
  NSString *caption = self.captionField.text;

  if (image == nil) && ([caption length] == 0) {

  }
    CGSize newSize = CGSizeMake(320.0f, 480.0f);
    CGRect newRectangle = CGRectMake(0, 0, 320.0f, 480.0f);
    UIGraphicsBeginImageContext(newSize);

    // Task 2: Line missing here! How do we draw the image in the resized context?

    UIImage *resizedImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    // Rest of code omitted for brevity!
}

@end
LatergramViewController.h 
#import "UIViewController.h"
#import "UIImage.h"

@interface LatergramViewController : UIViewController

@property (nonatomic, strong) UIImage *image;
@property (nonatomic, assign) NSString *caption;

- (IBAction)upload;

@end

1 Answer

Caleb Kleveter
MOD
Caleb Kleveter
Treehouse Moderator 37,862 Points
Caleb Kleveter
Caleb Kleveter
Treehouse Moderator 37,862 Points

Here is what I eventually passed with:

#import "LatergramViewController.h"

@implementation LatergramViewController

- (IBAction)upload {
if (self.image != nil && self.caption != nil) {
    CGSize newSize = CGSizeMake(320.0f, 480.0f);
    CGRect newRectangle = CGRectMake(0, 0, 320.0f, 480.0f);
    UIGraphicsBeginImageContext(newSize);

    // Task 2: Line missing here! How do we draw the image in the resized context?

    UIImage *resizedImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    // Rest of code omitted for brevity!
    }
}

@end