CatZanButton is easy to create a zan button with cool animation
CatZanButton is available on CocoaPods.Just add the following to your project Podfile:
pod 'CatZanButton'#Usage
#import "CatZanButton"
CatZanButton *zanBtn=[[CatZanButton alloc] initWithFrame:CGRectMake(0, 0, 50, 50) zanImage:[UIImage imageNamed:@"Zan"] unZanImage:[UIImage imageNamed:@"UnZan"]];
[zanBtn setCenter:self.view.center];
[self.view addSubview:zanBtn];
[zanBtn setClickHandler:^(CatZanButton *zanButton) {
  if (zanButton.isZan) {
    //Do something
  }else{
    //Do something
  }
}];
