pragma mark - 给tabbar的Item添加动画
屏幕快照 2017-06-13 上午9.33.33.png
- (void)tabBar:(UITabBar *)tabBar didSelectItem:(UITabBarItem *)item {
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
for (UIControl *tabBarButton in self.tabBar.subviews) {
if ([tabBarButton isKindOfClass:NSClassFromString(@"UITabBarButton")]) {
[tabBarButton addTarget:self action:@selector(tabBarButtonClick:) forControlEvents:UIControlEventTouchUpInside];
}
}
KK_Log(@"只执行一次哦哦哦哦");
});
}
- (void)tabBarButtonClick:(UIControl *)tabBarButton
{
for (UIView *imageView in tabBarButton.subviews) {
if ([imageView isKindOfClass:NSClassFromString(@"UITabBarSwappableImageView")]) {
//需要实现的帧动画,这里根据需求自定义
CAKeyframeAnimation *animation = [CAKeyframeAnimation animation];
animation.keyPath = @"transform.scale";
animation.values = @[@1.0,@1.3,@0.9,@1.15,@0.95,@1.05,@1.0];
animation.duration = 1;
animation.calculationMode = kCAAnimationCubic;
//把动画添加上去就OK了
[imageView.layer addAnimation:animation forKey:nil];
}
}
}