in my app i have an array of CALayer that I have animated along a bezierPath. When I close and reopen the app my layers are not animating and not in the same position as before closing the app. I have implemented two methods, pauseLayer and resumeLayer that works when I trigger them with two buttons inside my app but they won't work after closing the app. The code is the following
- (void)pauseLayers{
for(int y=0; y<=end;y++)
{
CFTimeInterval pausedTime = [car[y] convertTime:CACurrentMediaTime() fromLayer:nil];
car[y].speed = 0.0;
car[y].timeOffset = pausedTime;
standardUserDefaults[y] = [NSUserDefaults standardUserDefaults];
if (standardUserDefaults[y]) {
[standardUserDefaults[y] setDouble:pausedTime forKey:@"pausedTime"];
[standardUserDefaults[y] synchronize];
}
NSLog(@"saving positions");
}
}
-(void)resumeLayers
{
for(int y=0; y<=end;y++)
{
standardUserDefaults[y] = [NSUserDefaults standardUserDefaults];
car[y].timeOffset = [standardUserDefaults[y] doubleForKey:@"pausedTime"];
CFTimeInterval pausedTime = [car[y] timeOffset];
car[y].speed = 1.0;
car[y].timeOffset = 0.0;
car[y].beginTime = 0.0;
CFTimeInterval timeSincePause = [car[y] convertTime:CACurrentMediaTime() fromLayer:nil] - pausedTime;
car[y].beginTime = timeSincePause;
}
}