爱心按钮是一种自定义按钮，点击时发射图像。
屏幕快照
用法
在界面构建器中，转到身份检查器，将自定义类设置为LoveButton 
然后转到属性检查器，并设置loveImage、unLoveImage、loveColor、unLoveColor 
-在类中，只需将isLoved更改为true以显示动画，（请记住为isLoved添加默认值）
// love button IBOutlet
@IBOutlet weak var btnLove: LoveButton!
override func viewDidLoad() {
super.viewDidLoad()
// set defult value
btnLove.isLoved = false
}
@IBAction func love(_ sender: LoveButton) {
// change the value to true to show the animted hearts !.
sender.isLoved = true
}安装
LoveButton可通过CocoaPods获取。要安装它，只需将以下行添加到您的Podfile中：
pod 'LoveButton'支持我🚀
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The MIT License (MIT)
Copyright (c) 2017 Abedalkareem
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