How to change the border color of a text input in a react native app

Question

How can i change the border color or how can add or change the style in a text input field in react native when the text input field is focused. (for android)

Answer 1

You can do use onFocus and onBlur to do the job

state: {
    isFocused: true
}

 handleFocus = () => this.setState({isFocused: true})

 handleBlur = () => this.setState({isFocused: false})

 <TextInput
         onFocus={this.handleFocus}
         onBlur={this.handleBlur}
         style={[//Your Styles, {
             borderBottomColor: this.state.isFocused
                 ? 'black'
                 : 'red',
             borderBottomWidth: 1,
         }]}
     />