下载地址：https://github.com/PZXforXcode/PZXPraiseButton
一款用粒子效果做的点赞按钮。使用方便
#效果图
//首先import项目
#import "PZXPraiseButton.h"
PZXPraiseButton *button = [[PZXPraiseButton alloc]initWithFrame:CGRectMake(0, 0, 40, 40)];
button.center = self.view.center;
[button setImage:[UIImage imageNamed:@"桃心-3"] forState:UIControlStateNormal];
[button setImage:[UIImage imageNamed:@"桃心-2"] forState:UIControlStateSelected];
[button addTarget:self action:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];