React Native - The size of the placeholder dictates the height of a multiline input box

Issue:

I am facing a problem with my text input. The placeholder can hold a maximum of 2000 characters, but when the user starts typing, the height of the text input does not automatically shrink back down.

It seems like the height of the multiline text input is determined by the original length of the placeholder text. Is there a way to work around this?

Code Snippet:

import { Input } from 'react-native-elements';

interface Props {
    placeHolder: string;
    onChangeText: (text: string) => void;
}

const MyTextInput = (inputs: Props) => (
    <View>
        <Input
            inputStyle={{ textAlignVertical: 'top' }}
            placeholder={inputs.placeHolder}
            onChangeText={(text) => inputs.onChangeText(text)}
            multiline={true}
            maxLength={2000}
        />
    </View>
);

export default MyTextInput;

Screenshots:

Initial long placeholder: https://i.sstatic.net/sLUxF.jpg

User begins entering text: https://i.sstatic.net/mFqJd.jpg

Text Input height remains unchanged: https://i.sstatic.net/PFEbp.jpg

Answer №1

After considering all options, I decided to enhance the functionality by introducing a new value prop. This prop allows the input to dynamically adjust its height based on the content as the user types. Additionally, when the value is cleared or empty, the placeHolder will be displayed.

interface Properties {
    placeHolder: string;
    onChangeText: (text: string) => void;
    value: string;
}

const CustomTextInput = (inputs: Properties) => (
    <View>
        <Input
            inputStyle={{ textAlignVertical: 'top' }}
            value={inputs.value}
            placeholder={inputs.placeHolder}
            onChangeText={(text) => inputs.onChangeText(text)}
            multiline={true}
            maxLength={2000}
        />
    </View>
);

Answer №2

By incorporating minHeight and maxHeight into the inputStyle, your issue should be resolved.

Answer №3

By utilizing the clearTextOnFocus property, we can ensure that the input field will be cleared when focused.

<Input
        clearTextOnFocus={true}
        inputStyle={{ textAlignVertical: 'top' }}
        placeholder={inputs.placeHolder}
        onChangeText={(text) => inputs.onChangeText(text)}
        multiline={true}
        maxLength={2000}
    />

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