react native keyboard push view up

React Native Keyboard Push View Up

When developing a mobile application in React Native, you may encounter the issue where the keyboard covers the input fields at the bottom of the screen. This can be frustrating for users and can negatively impact the overall user experience. To tackle this problem, we need to push the view up when the keyboard is active.

Method 1: Using KeyboardAvoidingView Component

The easiest way to push the view up when the keyboard is active is to use the KeyboardAvoidingView component provided by React Native.

import { KeyboardAvoidingView } from 'react-native';

<KeyboardAvoidingView behavior="padding" style={{flex: 1}}>
  <!-- Your input fields here -->
</KeyboardAvoidingView>

The behavior prop takes a value of either "height", "position", or "padding". In this case, we set it to "padding" to push the view up by adding padding to the bottom of the container.

Method 2: Using Keyboard API

If you prefer not to use the KeyboardAvoidingView component, you can use the Keyboard API to manually adjust the view position.

import { Keyboard, View } from 'react-native';

class MyComponent extends React.Component {
  state = {
    keyboardHeight: 0
  };

  componentDidMount() {
    this.keyboardDidShowListener = Keyboard.addListener(
      'keyboardDidShow',
      this._keyboardDidShow
    );
    this.keyboardDidHideListener = Keyboard.addListener(
      'keyboardDidHide',
      this._keyboardDidHide
    );
  }

  componentWillUnmount() {
    this.keyboardDidShowListener.remove();
    this.keyboardDidHideListener.remove();
  }

  _keyboardDidShow = (event) => {
    this.setState({
      keyboardHeight: event.endCoordinates.height
    });
  }

  _keyboardDidHide = () => {
    this.setState({
      keyboardHeight: 0
    });
  }

  render() {
    return (
      <View style={{flex: 1, paddingBottom: this.state.keyboardHeight}}>
        <!-- Your input fields here -->
      </View>
    );
  }
}

In this method, we add listeners for the keyboardDidShow and keyboardDidHide events. When the keyboard is shown, we update the state with the height of the keyboard and add padding to the bottom of the container. When the keyboard is hidden, we remove the padding by setting the state back to 0.

These are two simple methods to push the view up when the keyboard is active in a React Native application. Choose the one that works best for your specific use case.