javascript 如何在 react-native 中更改占位符 textSize
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how to change placeholder textSize in react-native
提问by Hussian Shaik
hai in my TextInput i want to change the size of the font of placeHolder,i tried like this:
在我的 TextInput 中，我想更改 placeHolder 的字体大小，我试过这样的：
<TextInput
style={styles.email}
value={this.state.email}
placeholder="Email"
placeholderTextColor="red"
//placeholderTextSize = 20px
onChange={this.handleEmailChange.bind(this)}
onBlur={this.onBlur.bind(this)}/>
when i wrote like this color is working for me but size is not working,can any one give me suggestions how to change the size of placeholder Text,any help much appreciated
当我写这样的颜色对我有用但大小不起作用时，任何人都可以给我建议如何更改占位符文本的大小，非常感谢任何帮助
回答by BigPun86
I am not sure if you can specify only the size of placeholderText. But you can change the fontSize of the input text from your TextInput:
我不确定您是否只能指定 placeholderText 的大小。但是您可以从 TextInput 更改输入文本的 fontSize：
var styles = StyleSheet.create({
email: {
fontSize: 12, <-- Textsize of Input-Text and Placeholder-Text
},
})
Maybe your solution works without px?! But i don′t think so. If you want to have a different PlaceholderText than the InputText, than you could maybe acces the onChangeText-Method of TextInput and change the fontSize as soon as you type something into the Textfield.
也许您的解决方案在没有 px 的情况下有效？！但我不这么认为。如果您想要一个与 InputText 不同的 PlaceholderText，那么您可以访问 TextInput 的 onChangeText-Method 并在您在 Textfield 中输入内容后立即更改 fontSize。
回答by Mian Jawad Ahmad
<TextInput
style={{fontSize:12}}
placeholder='any text'
onChangeText={(input)=>this.setState({input: input})}
placeholderTextColor='green'/>
