An an animated sprite (at launch) of a Tabbar-based app...
Can anyone provide an example?
What is an animated sprite of a tabbar-based app?
Can you describe the effect you want in enough detail that we can understand what you're talking about?
I gather that you want some sort of animation at launch, but what kind?
Note that the system displays a single, static image at launch while your app is loading. That image stays on-screen until your code wakes up and removes it. You can't do anything until the app is done loading and your code begins to execute. So any animation you want will have to wait until your code starts running.
Check out this password generator app that shows various techniques including using a data container singleton object to share data between objects in your project.
Can you describe the effect you want in enough detail that we can understand what you're talking about?
I gather that you want some sort of animation at launch, but what kind?
Note that the system displays a single, static image at launch while your app is loading. That image stays on-screen until your code wakes up and removes it. You can't do anything until the app is done loading and your code begins to execute. So any animation you want will have to wait until your code starts running.
I am aware of Default.png..what type of effect?
Any kind of animation (any time during launch) of tab bar app. I'm thinking just a few .pngs animated.
Can you describe the effect you want in enough detail that we can understand what you're talking about?
I gather that you want some sort of animation at launch, but what kind?
Note that the system displays a single, static image at launch while your app is loading. That image stays on-screen until your code wakes up and removes it. You can't do anything until the app is done loading and your code begins to execute. So any animation you want will have to wait until your code starts running.
I'm pretty sure I've seen apps with a straight animation at launch, seemingly without Default.png..am I right?
Can you describe the effect you want in enough detail that we can understand what you're talking about?
I gather that you want some sort of animation at launch, but what kind?
Note that the system displays a single, static image at launch while your app is loading. That image stays on-screen until your code wakes up and removes it. You can't do anything until the app is done loading and your code begins to execute. So any animation you want will have to wait until your code starts running.
I'm pretty sure I've seen apps with a straight animation at launch, seemingly without Default.png..am I right?
You don't have to have a default.png, but then the user sees a blank screen until the app launches.
You could probably start an animation as soon as your app delegate loads, and finish the rest of your initialization while the animation runs.
Core Animation is very easy to use. Look up CAAnimation and CALayer in the XCode docs. In iOS, every view object has a layer property, and changes to that layer property are done using animation. If you change the center point, opacity, or change the transform of a layer, the system animates that change onto the screen. There are also some pretty cool animation methods in UIView. Take a look at the method animateWithDuration:animations: for example. Once you understand blocks it's quite easy to use.
Check out this password generator app that shows various techniques including using a data container singleton object to share data between objects in your project.
thanks again Duncan...
as I examine that info more closely I had a quick question..
Have you seen that including Default.png in project results in no animation ,while not including Default.png results in animation being displayed?
No.
While the system is loading your app, you can display a fixed default.png image (or not). If you don't, you get a black screen. Once your app is loaded, you can change the display and begin animating.
One of our apps, Save My Place, uses a static image with a banner on top. As soon as we load, we replace it with a background image and a banner as a separate graphic. We then animate the banner shrinking to a point and disappearing. the effect is that you get an animation that seems to come from the default.png, but that's not really true.
Check out this password generator app that shows various techniques including using a data container singleton object to share data between objects in your project.
UITabBar animated sprite
Linear Mode
