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我試圖用從AsyncStorage帶來的數據填充React Native的Picker組件。代碼如下:React native picker Android動態填充返回:無法讀取未定義的propertie'值'
負載在componentWillMount數據:
StorageManager.get('clients').then((clients) => { this.setState({ clientsData: clients }); });
RenderPicker方法:
let clientList = this.state.clientsData.map((client) => { const label = client.name; const value = client.company; return <Picker.Item label={label} value={value} />; }); return ( <Picker // Redux managed selectedValue={this.props.clientId} onValueChange={(itemValue) => // Redux managed this.props.invoiceFieldChanged({prop: 'clientId', value: itemValue}) } > <Picker.Item label="Select a client" value={0}/> {clientList} </Picker>);
的行爲去選擇一個硬編碼選項時如預期,例如「選擇一個客戶端」,但是當我嘗試獲取其他選項時,會出現以下錯誤:
有什麼想法?