我定义了两个TextInput字段如下:
<TextInput
style = {styles.titleInput}
returnKeyType = {"next"}
autoFocus = {true}
placeholder = "Title" />
<TextInput
style = {styles.descriptionInput}
multiline = {true}
maxLength = {200}
placeholder = "Description" />
但在按下键盘上的“next”按钮后，我的react-native应用程序并没有跳转到第二个TextInput字段。我怎样才能做到呢?
谢谢!
当前回答
如果您恰好像我一样使用tcomb-form-native，您也可以这样做。这里有一个技巧:不是直接设置TextInput的道具，而是通过选项来实现。您可以将表单的字段引用为:
this.refs.form.getComponent('password').refs.input.focus()
所以最终的产品看起来是这样的:
var t = require('tcomb-form-native');
var Form = t.form.Form;
var MyForm = t.struct({
field1: t.String,
field2: t.String,
});
var MyComponent = React.createClass({
_getFormOptions () {
return {
fields: {
field1: {
returnKeyType: 'next',
onSubmitEditing: () => {this.refs.form.getComponent('field2').refs.input.focus()},
},
},
};
},
render () {
var formOptions = this._getFormOptions();
return (
<View style={styles.container}>
<Form ref="form" type={MyForm} options={formOptions}/>
</View>
);
},
});
(感谢remcoanker在这里发布的想法:https://github.com/gcanti/tcomb-form-native/issues/96)
其他回答
如果您恰好像我一样使用tcomb-form-native，您也可以这样做。这里有一个技巧:不是直接设置TextInput的道具，而是通过选项来实现。您可以将表单的字段引用为:
this.refs.form.getComponent('password').refs.input.focus()
所以最终的产品看起来是这样的:
var t = require('tcomb-form-native');
var Form = t.form.Form;
var MyForm = t.struct({
field1: t.String,
field2: t.String,
});
var MyComponent = React.createClass({
_getFormOptions () {
return {
fields: {
field1: {
returnKeyType: 'next',
onSubmitEditing: () => {this.refs.form.getComponent('field2').refs.input.focus()},
},
},
};
},
render () {
var formOptions = this._getFormOptions();
return (
<View style={styles.container}>
<Form ref="form" type={MyForm} options={formOptions}/>
</View>
);
},
});
(感谢remcoanker在这里发布的想法:https://github.com/gcanti/tcomb-form-native/issues/96)
<TextInput placeholder="Nombre"
ref="1"
editable={true}
returnKeyType="next"
underlineColorAndroid={'#4DB6AC'}
blurOnSubmit={false}
value={this.state.First_Name}
onChangeText={First_Name => this.setState({ First_Name })}
onSubmitEditing={() => this.focusNextField('2')}
placeholderTextColor="#797a7a" style={{ marginBottom: 10, color: '#808080', fontSize: 15, width: '100%', }} />
<TextInput placeholder="Apellido"
ref="2"
editable={true}
returnKeyType="next"
underlineColorAndroid={'#4DB6AC'}
blurOnSubmit={false}
value={this.state.Last_Name}
onChangeText={Last_Name => this.setState({ Last_Name })}
onSubmitEditing={() => this.focusNextField('3')}
placeholderTextColor="#797a7a" style={{ marginBottom: 10, color: '#808080', fontSize: 15, width: '100%', }} />
和add方法
focusNextField(nextField) {
this.refs[nextField].focus();
}
使用回调引用而不是遗留的字符串引用:
<TextInput
style = {styles.titleInput}
returnKeyType = {"next"}
autoFocus = {true}
placeholder = "Title"
onSubmitEditing={() => {this.nextInput.focus()}}
/>
<TextInput
style = {styles.descriptionInput}
multiline = {true}
maxLength = {200}
placeholder = "Description"
ref={nextInput => this.nextInput = nextInput}
/>
我创建了一个小库来做这件事，除了替换你的包装视图和导入TextInput，不需要更改代码:
import { Form, TextInput } from 'react-native-autofocus'
export default () => (
<Form>
<TextInput placeholder="test" />
<TextInput placeholder="test 2" />
</Form>
)
https://github.com/zackify/react-native-autofocus
详细解释在这里:https://zach.codes/autofocus-inputs-in-react-native/
如果你正在使用NativeBase作为UI组件，你可以使用这个示例
<Item floatingLabel>
<Label>Title</Label>
<Input
returnKeyType = {"next"}
autoFocus = {true}
onSubmitEditing={(event) => {
this._inputDesc._root.focus();
}} />
</Item>
<Item floatingLabel>
<Label>Description</Label>
<Input
getRef={(c) => this._inputDesc = c}
multiline={true} style={{height: 100}} />
onSubmitEditing={(event) => { this._inputLink._root.focus(); }} />
</Item>
