UIImageView change Background Color and setImage not working during Animation

iphone ios objective-c cocoa-touch uiimageview

16,659

Solution 1

Try to change background color and changing the image once animation is complete. it will simply work for you.

Solution 2

Try this:

[UIView animateWithDuration:1.0 animations:^(){} completion:^(BOOL finished){}];

16,659

Author by

isaacselement

Coder in the wild .

Updated on June 04, 2022

Comments

isaacselement almost 2 years
As the title said, it's very strange, did you agree?

So , if someone found your codes
```
imageView.backgroundColor = [UIColor greenColor]; 
```
or
```
imageView.image = [UIImage imageName:@"angryBird"];" 
```
are not working. Just mind that if your imageView is animating , or whether the animation has been removed or not.

－－－－－－－－－－The Answer Below－－－－－－－－－－－－－－－

Just stop animating before you set image and change background of the animating UIImageView.
```
UIImageView* imageView = [UIImageView alloc] init];
//......do sth. like setFrame ...
imageView.images = [NSArray arrayWithObjects....]; // set the animation images array 
imageView.animationDuration = 1.0;
[imageView startAnimating];
//......do sth.
[imageView stopAnimating];        // **** do not forget this!!!!! ****
imageView.backgroundColor = [UIColor greenColor];
imageView.image = [UIImage imageName:@"angryBird"];
```
When you performSelector: withObject: afterDey:1.0s , in the selector method , also, you need to stopAnimating too, and then setImage or change background color.
chandan almost 11 years

Before assigning image name as angryBird please double check your spell
isaacselement almost 11 years

thanks. It's not the frame's problem . I change imageView's background color before its animation stop, and the rigth way is that I should change the background color after its animation stop . Or, another way , stop its animation and then , change its background color.
isaacselement almost 11 years

;) , sorry ,forget about the "imageName:" and "angry bird", I wat not coding it in XCode. i just write it in this textArea.
chandan almost 11 years

so what u really want. Do u want to change background color after animation stop or before animation stop ?
isaacselement almost 11 years

yes : ) , its animation must stop , and change background color would work.
isaacselement almost 11 years

His thought is right. and , what i really want is to point out that : if someone want to change the UIImageView background color or image , he should stop its animating. put the code "[imageView stopAnimating]" before "imageView.backgroundColor = [UIColor greenColor]" . if not , set BGColor would failed. Many thanks @chandan, :)