React 开源组件笔记
开源组件react-native-camera
推荐一个跨平台的rn-camera-roll: —->https://www.npmjs.com/package/rn-camera-roll
- A Camera component for React Native. Also supports barcode scanning!二维码扫描
- 原生Android Zxing google
- rnpm link不是安装,而是添加原生依赖,对应的组件已经安装好了才能rnpm link
- 通过这个例子来理解下react native的架构:js环境 jsBridge native环境
- 业务逻辑是reactJs处理 ui用react写 但实际桥接成native
- ref的两种属性:String属性 回调属性(组件render渲染完成后的回调)
- 官网:https://facebook.github.io/react ... -callback-attribute
- this callback will be executed immediately after the component is mounted(组件render之后DidMount之前)