ios - Objective C - How to change image from another class (another UIViewController) -



ios - Objective C - How to change image from another class (another UIViewController) -

i'm using nsobject class handle few server methods.

one of methods download images db (parse.com).

the problem uiviewcontroller nowadays image loaded faster download process (the image nil), , 2 sec after image in device.

how can update uiimageview image (userprofile class) nsobject class (the 1 download method)?

i'm not using navigation bar - uiviewcontroller image in uitabbar

i know how observe end of downloading process don't know how reach uiimageview property other class.

use delegate requirement. check implement delegate or ios_delegates how can done.

some understanding given below :

say u have delegate method in nsobject class handle few server methods

@protocol younsobjectclassdelegate <nsobject> @required -(void)imagedownloaded:(uiimage*)image; @end

add

@property (nonatomic,strong) id<younsobjectclassdelegate> delegate;

while allocating object whatever viewcontroller , don't forgot intialize delegate

yournsobjectclassobject.delegate = self;

when image downloaded in nsobject class

if ([delegate respondstoselector:@selector(imagedownloaded:)]) { [delegate imagedownloaded:image]; }

in uiviewcontroller u want have image add together these method

-(void)imagedownloaded:(uiimage*)image { //set image here }

ios objective-c iphone xcode parse.com

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