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[英]React Native: How to move to the next input filed after pressing the “next” keyboard button?
[英]React Native - Shift focus to next Input box upon pressing “Next” button in keyboard
我在反應土著世界方面非常陌生。 我想將焦點從第一個輸入框轉移到第二個輸入框。 請找到我下面的代碼。
<View style={styles.inputViewStyle}>
<TextInput
ref={firstnameRef => (this.firstnameRef =
firstnameRef)}
label="Firstname"
returnKeyType="next"
autoCorrect={false}
value={this.state.firstname}
onSubmitEditing={() =>
this.refs.middlenameRef.focus()}
onChangeText={firstname => this.setState({ firstname })}
blurOnSubmit={false}
/>
</View>
<View style={styles.inputViewStyle}>
<TextInput
ref={middlenameRef => (this.middlenameRef = middlenameRef)}
label="Middlename"
returnKeyType="go"
value={this.state.middlename}
onChangeText={middlename => this.setState({ middlename })}
/>
</View>
我收到錯誤->“未定義不是對象(正在評估'this2.middlenameRef.focus()')”
更新: constructor(props) { super(props); this.state = { firstname: "", middlename: "", lastname: ""
};constructor(props) { super(props); this.state = { firstname: "", middlename: "", lastname: ""
};
請指導。 提前致謝。
嘗試這個:
onSubmitEditing={() => { this.middlenameRef.focus() }}
觸發前一個TextInput的onSubmitEditing時,設置第二個TextInput焦點。
嘗試這個
在第二個TextInput上添加一個ref ref = {(input)=> {this.secondTextInput = input; }}
將焦點函數綁定到第一個TextInput的onSubmitEditing事件。 onSubmitEditing = {()=> {this.secondTextInput.focus(); }}
切記將blurOnSubmit設置為false,以防止鍵盤閃爍。 blurOnSubmit = {FALSE}
您可以通過此直接獲取實例。 空檢查可能是調試的好選擇。
onSubmitEditing={() => this.middlenameRef && this.middlenameRef.focus()}
<TextInput
placeholder = "FirstTextInput"
returnKeyType = { "next" }
onSubmitEditing={() => { this.secondTextInput.focus(); }}
blurOnSubmit={false}
/>
<TextInput
ref={(input) => { this.secondTextInput = input; }}
placeholder = "secondTextInput"
/>
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