我遇到了一些奇怪的事情。我正在尝试创建一个不断翻转的 UIView 网格。为此,我创建了以下类:
@implementation LMFlipViewController
@synthesize viewOne=_viewOne, viewTwo=_viewTwo, animationDuration=_animationDuration, pause=_pause, animationFlag=_animationFlag;
-(LMFlipViewController *)initWithViewOne:(UIView *)viewOne viewTwo:(UIView *)viewTwo animationDuration:(CGFloat)animationDuration andPauseInBetweenAnimation:(CGFloat)pause {
[super init];
[self.view setFrame:viewOne.bounds];
_viewOne=viewOne;
_viewTwo=viewTwo;
_animationDuration=animationDuration;
_pause=pause;
return self;
}
-(void)viewDidLoad{
[super viewDidLoad];
NSLog(@"0");
_animationFlag=NO;
}
-(void)viewDidUnload{
[super viewDidUnload];
}
-(void)viewWillAppear:(BOOL)animated {
[self.view addSubview:_viewOne];
// [self performSelector:@selector(loopAnimation) withObject:nil afterDelay:_pause];
[NSTimer scheduledTimerWithTimeInterval:_pause
target:self
selector:@selector(loopAnimation)
userInfo:nil
repeats:NO];
NSLog(@"1");
}
-(void)triggerAnimation {
NSLog(@"5");
if (_animationFlag) {
NSLog(@"Animation flag: YES");
_animationFlag=NO;
[UIView transitionWithView:self.view duration:_animationDuration options:(UIViewAnimationOptionTransitionFlipFromLeft) animations: ^{
[_viewTwo removeFromSuperview];
} completion:^(BOOL finished) {
[UIView transitionWithView:self.view duration:_animationDuration options:(UIViewAnimationOptionTransitionFlipFromLeft) animations: ^{
[self.view addSubview:_viewOne];
} completion:nil];
}];
}else{
NSLog(@"Animation flag: NO");
_animationFlag=YES;
[UIView transitionWithView:self.view duration:_animationDuration options:(UIViewAnimationOptionTransitionFlipFromLeft) animations: ^{
[_viewOne removeFromSuperview];
} completion:^(BOOL finished) {
[UIView transitionWithView:self.view duration:_animationDuration options:(UIViewAnimationOptionTransitionFlipFromLeft) animations: ^{
[self.view addSubview:_viewTwo];
} completion:nil];
}];
}
NSLog(@"6");
}
-(void)loopAnimation {
NSLog(@"2");
[self triggerAnimation];
NSLog(@"3");
// [self performSelector:@selector(loopAnimation) withObject:nil afterDelay:_pause];
[NSTimer scheduledTimerWithTimeInterval:_pause
target:self
selector:@selector(loopAnimation)
userInfo:nil
repeats:NO];
NSLog(@"4");
}
@end
然后,我尝试了这样的课程:
- (void)viewDidLoad {
[super viewDidLoad];
UIView *viewOne=[[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 50)];
viewOne.backgroundColor=[UIColor redColor];
UIView *viewTwo=[[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 50)];
viewTwo.backgroundColor=[UIColor purpleColor];
LMFlipViewController *flipViewController=[[LMFlipViewController alloc] initWithViewOne:viewOne viewTwo:viewTwo animationDuration:0.5 andPauseInBetweenAnimation:3];
[self.view addSubview:flipViewController.view];
UIView *viewThree=[[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 50)];
viewThree.backgroundColor=[UIColor blackColor];
UIView *viewFour=[[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 50)];
viewFour.backgroundColor=[UIColor blueColor];
LMFlipViewController *flipViewControllerTwo=[[LMFlipViewController alloc] initWithViewOne:viewThree viewTwo:viewFour animationDuration:0.5 andPauseInBetweenAnimation:3];
[flipViewControllerTwo.view setFrame:CGRectMake(0, 60, 100, 50)];
[self.view addSubview:flipViewControllerTwo.view];
}
这种方式效果很好。关键是,我需要以这种方式实例化几个翻转视图,并且需要在“for”循环中实现它们。所以我尝试了这个:
- (void)viewDidLoad {
[super viewDidLoad];
for (int i=0;i<2;i++) {
UIView *viewOne=[[UIView alloc] initWithFrame:CGRectMake(0, i*60, 100, 50)];
viewOne.backgroundColor=[UIColor redColor];
UIView *viewTwo=[[UIView alloc] initWithFrame:CGRectMake(0, i*60, 100, 50)];
viewTwo.backgroundColor=[UIColor purpleColor];
[self.view addSubview:[[LMFlipViewController alloc] initWithViewOne:viewOne viewTwo:viewTwo animationDuration:0.5 andPauseInBetweenAnimation:3].view];
}
}
当我尝试使用循环时,第一个视图动画正确,但其他视图没有。动画只是被跳过,视图切换是直接的。
有谁知道为什么?我的猜测是这是一个线程问题或类似的东西,但我对这些东西一无所知。欢迎任何帮助。谢谢。