rn组件
yarn install
sudo npm install -g react-native-cli // 没有react-native-cli需执行
react-native link react-native-gesture-handler
sudo react-native run-ios
sudo xcode-select -s /Applications/Xcode.app/Contents/Developer/ // 找不到路径执行
<Popup
visible={this.state.showTopPopup}
onClose={() => this.setState({ showTopPopup: false })}
slideFrom="top"
>