具体使用如下： Step 1. Add the JitPack repository to your build file

allprojects {
	repositories {
		...
		maven { url 'https://jitpack.io' }
	}
}

Step 2. Add the dependency

dependencies {
	compile 'com.github.Blincheng:PullDownEnlargeUtilDemo:v1.2'
}

【Android】商品详情页下拉放大动画工具类，一行代码集成使用 http://blog.csdn.net/qq_25867141/article/details/65628198