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Hey guys, would like to tell you first of all that Im fairly new on Xcode so I really need help and very much so.
This is what I want to achieve:
I have an image that I would like to rotate 360 degrees in 35 seconds whenever the user touches it. Is it possible to get and alert whenever the animation is completed? Is it possible to change image when the animation is completed?
Please guys i really need help on this one... Please tell me witch framework to import (quartz-core?) and what to put in "Myproject.h" and "Myproject.m"
Specifically, your animation will need to alter the transform property of the UIView to give it the rotation. Then, to do stuff once the animation has completed, you would use the completion block parameter.
Note, there are plenty of code samples in the documentation.
Specifically, your animation will need to alter the transform property of the UIView to give it the rotation. Then, to do stuff once the animation has completed, you would use the completion block parameter.
Note, there are plenty of code samples in the documentation.
thanks mate, but i think i need more more more help :(
How much more? You want to have the solution spoon fed to you? Look at the link I posted. It has great example code. I'm not sure what more you could want?
Hey guys, would like to tell you first of all that Im fairly new on Xcode so I really need help and very much so.
This is what I want to achieve:
I have an image that I would like to rotate 360 degrees in 35 seconds whenever the user touches it. Is it possible to get and alert whenever the animation is completed? Is it possible to change image when the animation is completed?
Please guys i really need help on this one... Please tell me witch framework to import (quartz-core?) and what to put in "Myproject.h" and "Myproject.m"
Thanks for your help!!
Sure it's possible. You need to use a framework called "Core Animation"
Doing a 360 degree animation is a little tricky, because the system gets confused. 360 degrees puts you back where you started, and it isn't clear what you wanted. You want to do a series of 3 rotations of 120 degrees apiece, ending up at 360 degrees.
You do indeed need the QuartzCore framework.
You will want to look at UIView animations. You want a method like animateWithDuration:animations:completion:
What you will want to animate is your image view's transform property.
That method lets you pass in a block of code that gets executed once the animation is complete. You'd trigger 3 animations of 120 degrees each, and then trigger whatever code you want once the image has rotated by the full amount.
No, We're not going to "tell [you]... what to put in 'Myproject.h' and 'Myproject.m'." That amounts to writing your code for you. I'm available for hire if you'd like to hire my company to develop your app for you, but otherwise, we'll give help and suggestions, not do your work for you.
There is an excellent Core Animation demo project on the net, written by a guy named Bob McCune. You can download it here:
anr164
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Specifically, look at
Specifically, your animation will need to alter the transform property of the UIView to give it the rotation. Then, to do stuff once the animation has completed, you would use the completion block parameter.
Note, there are plenty of code samples in the documentation.
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0 • Off Topic Insightful Disagree Dislike Like AwesomeDoing a 360 degree animation is a little tricky, because the system gets confused. 360 degrees puts you back where you started, and it isn't clear what you wanted. You want to do a series of 3 rotations of 120 degrees apiece, ending up at 360 degrees.
You do indeed need the QuartzCore framework.
You will want to look at UIView animations. You want a method like animateWithDuration:animations:completion:
What you will want to animate is your image view's transform property.
That method lets you pass in a block of code that gets executed once the animation is complete. You'd trigger 3 animations of 120 degrees each, and then trigger whatever code you want once the image has rotated by the full amount.
No, We're not going to "tell [you]... what to put in 'Myproject.h' and 'Myproject.m'." That amounts to writing your code for you. I'm available for hire if you'd like to hire my company to develop your app for you, but otherwise, we'll give help and suggestions, not do your work for you.
There is an excellent Core Animation demo project on the net, written by a guy named Bob McCune. You can download it here:
Core Animation Presentation
Duncan C
WareTo
Animated GIF created with Face Dancer, available for free in the app store.
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