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how to use onFocus to style a return function in react native

BadT33 answered on December 18, 2022 Popularity 5/10 Helpfulness 6/10

answer how to use onFocus to style a return function in react native

how to use onFocus to style a return function in react native

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To use the onFocus event to style a return function in React Native, you can follow these steps:

Import the StyleSheet module from react-native at the top of your component file:
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import { StyleSheet } from 'react-native';
Define your styles in a const using the StyleSheet.create method:
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const styles = StyleSheet.create({
  focused: {
    color: 'blue'
  },
  notFocused: {
    color: 'black'
  }
});
Add a focused state to your component using the useState hook:
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const [focused, setFocused] = useState(false);
Add the onFocus and onBlur props to the element you want to style when it's focused:
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<Text
  style={focused ? styles.focused : styles.notFocused}
  onFocus={() => setFocused(true)}
  onBlur={() => setFocused(false)}
>
  My Text
</Text>
This will change the text color to blue when it's focused and black when it's not focused.

You can also use the useEffect hook to set the initial focus state based on whether the element has the focus when the component mounts. For example:

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useEffect(() => {
  const element = React.findNodeHandle(ref.current);
  const isFocused = TextInputState.currentlyFocusedField() === element;
  setFocused(isFocused);
}, []);
Here, ref is a ref to the element you want to style, and TextInputState is a utility provided by React Native that allows you to check which element has the focus.

I hope this helps! Let me know if you have any questions.

Popularity 5/10 Helpfulness 6/10 Language javascript

Source: Grepper

Tags: function javascript onfocus react-native return

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Contributed on Dec 18 2022

BadT33

0 Answers Avg Quality 2/10

how to use onFocus to style a return function in react native

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