Warning: Failed prop type: Invalid prop value of type number supplied to Textinput, expected string

react-native 使用TextInput标签时会遇到这个警告：

Warning: Failed prop type: Invalid prop value of type number supplied to Textinput, expected string in Textinput (at Appointmentnumber is: 112) in Appointmentnumber(created by Context. Consumen)in withnavigation(Appointmentnumber)(created bySceneview

在道具中你传递的是数值，你必须以字符串的形式传递它，所以这样改进一下代码：

<TextInputstyle={styles.textinput}placeholder="站厅预约人数"placeholderTextColor = "#cccccc"keyboardType = "numeric"value={`${this.state.num}`} //这里改进一下就OKonChangeText={(num)=> {this.setState({num})}}
/>