关于3D Touch
3D Touch是一种立体触控技术，屏幕课适应不同的感压力度触控，苹果公司并于2015年宣布了3D Touch功能。
3D Touch的使用是需要硬件与系统的配合，iPhone 6s及以上机型（iPhone XR不支持3D Touch）iOS 9及以上系统，所以在开发app的时候切记要对于设备与系统进行判断。
3D Touch用法
Apple对3D Touch用法给了三种官方用法，分别是：
-
Quicky Action:
Quick Actions let users do the things they do most often, faster and in fewer steps. Many of these actions can even be done with a single press, right from the Home screen.
简单说就是快速打开app相对应的页面 -
Peek and Pop:
Let your users preview all kinds of content and even act on it — without having to actually open it. Users can then press a little deeper to Pop into content in your app.
简单说就是用于预览的（朋友圈图片和聊天记录都有用到） -
Pressure Sensitivity:
Creative apps can take advantage of the pressure-sensing display of iPhone 6s and iPhone 6s Plus in many ways. For example, they can vary line thickness or give a brush a changing style.
这个用得最多就是画画啦，大力点颜色会深一点，个人感觉就和数位板很像了
之后会陆续更新3D Touch前两种用法在app中是如何创建使用的，敬请留意
未经授权，禁止转载！
尊重原创，转载请注明出处，谢谢！
