我也遇到這個(gè)問題 借鑒一下別人的

react-native 使用TextInput標(biāo)簽時(shí)會(huì)遇到這個(gè)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

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在道具中你傳遞的是數(shù)值，你必須以字符串的形式傳遞它，所以這樣改進(jìn)一下代碼：

<TextInput
  style={styles.textinput}
  placeholder="站廳預(yù)約人數(shù)"
  placeholderTextColor = "#cccccc"
  keyboardType = "numeric"
  value={`${this.state.num}`} //這里改進(jìn)一下就OK
  onChangeText={(num)=> {this.setState({num})}}
/>

原文鏈接：https://blog.csdn.net/quhongqiang/article/details/88837813