I have 3 buttons in my react native app. When user clicks button 1 I need to change it color to orange. But other buttons should have the default color (grey). If user clicks the button 3 next time, color should change to orange ,but that 1st button color should reset to default. I'm totally new to react native and this is what I tried. But it applies for all buttons. I know if I can have multiple states with unique Id , it can be done. But I don't know the method.
<Text style={ styles.switchButtonsTitle }>Choose Type of User</Text>
<TouchableOpacity onPress={(userType) =>
this.selectionOnPress("BASIC")} >
<Text style={_style}>
<Text style={styles.switchButtonsText}>BASIC</Text>
</Text>
</TouchableOpacity>
<TouchableOpacity onPress={(userType) =>
this.selectionOnPress("INTERMEDIATE")}>
<Text style={_style}>
<Text style={styles.switchButtonsText}>INTERMEDIATE</Text>
</Text>
</TouchableOpacity>
<TouchableOpacity onPress={(userType) =>
this.selectionOnPress("ADVANCED")}>
<Text style={{backgroundColor: this.state.backgroundColor}}>
<Text style={styles.switchButtonsText}>ADVANCED</Text>
</Text>
</TouchableOpacity>
selectionOnPress
selectionOnPress(userType) {
this.setState({
onClicked: true
});
}
props
constructor(props) {
super(props);
this.state = {
onClicked: false
}
this.selectionOnPress = this.selectionOnPress.bind(this)
}
render(not adding the all codes, only added the useful codes for this post)
render() {
var _style;
if (this.state.onClicked) { // clicked button style
_style = {
backgroundColor: "red"
}
}
else { // default button style
_style = {
backgroundColor: "blue"
}
}
I have 3 buttons in my react native app. When user clicks button 1 I need to change it color to orange. But other buttons should have the default color (grey). If user clicks the button 3 next time, color should change to orange ,but that 1st button color should reset to default. I'm totally new to react native and this is what I tried. But it applies for all buttons. I know if I can have multiple states with unique Id , it can be done. But I don't know the method.
<Text style={ styles.switchButtonsTitle }>Choose Type of User</Text>
<TouchableOpacity onPress={(userType) =>
this.selectionOnPress("BASIC")} >
<Text style={_style}>
<Text style={styles.switchButtonsText}>BASIC</Text>
</Text>
</TouchableOpacity>
<TouchableOpacity onPress={(userType) =>
this.selectionOnPress("INTERMEDIATE")}>
<Text style={_style}>
<Text style={styles.switchButtonsText}>INTERMEDIATE</Text>
</Text>
</TouchableOpacity>
<TouchableOpacity onPress={(userType) =>
this.selectionOnPress("ADVANCED")}>
<Text style={{backgroundColor: this.state.backgroundColor}}>
<Text style={styles.switchButtonsText}>ADVANCED</Text>
</Text>
</TouchableOpacity>
selectionOnPress
selectionOnPress(userType) {
this.setState({
onClicked: true
});
}
props
constructor(props) {
super(props);
this.state = {
onClicked: false
}
this.selectionOnPress = this.selectionOnPress.bind(this)
}
render(not adding the all codes, only added the useful codes for this post)
render() {
var _style;
if (this.state.onClicked) { // clicked button style
_style = {
backgroundColor: "red"
}
}
else { // default button style
_style = {
backgroundColor: "blue"
}
}
3 Answers
Reset to default 12I make some modification on your code
export default class App extends Component {
constructor(props) {
super(props);
this.state = { selectedButton: null };
this.selectionOnPress = this.selectionOnPress.bind(this);
}
selectionOnPress(userType) {
this.setState({ selectedButton: userType });
}
render() {
return (
<View>
<Text style={styles.switchButtonsTitle}>
Choose Type of User
</Text>
<TouchableOpacity
onPress={() => this.selectionOnPress("BASIC")}
>
<Text
style={{
backgroundColor:
this.state.selectedButton === "BASIC"
? "red"
: "grey"
}}
>
<Text style={styles.switchButtonsText}>BASIC</Text>
</Text>
</TouchableOpacity>
<TouchableOpacity
onPress={() => this.selectionOnPress("INTERMEDIATE")}
>
<Text
style={{
backgroundColor:
this.state.selectedButton === "INTERMEDIATE"
? "red"
: "grey"
}}
>
<Text style={styles.switchButtonsText}>
INTERMEDIATE
</Text>
</Text>
</TouchableOpacity>
<TouchableOpacity
onPress={() => this.selectionOnPress("ADVANCED")}
>
<Text
style={{
backgroundColor:
this.state.selectedButton === "ADVANCED"
? "red"
: "grey"
}}
>
<Text style={styles.switchButtonsText}>
INTERMEDIATE
</Text>
</Text>
</TouchableOpacity>
</View>
);
}
}
... don't forget to define your styles
First i remend you to create a button ponent. https://medium./the-react-native-log/organizing-a-react-native-project-9514dfadaa0
a easy way to do it is creating a state for each button like this
<TouchableOpacity onPress={
(userType) => this.selectionOnPress("BASIC");
this.setState({backgroundColor1: this.state.backgroundColor1 == 'grey'? 'orange' : 'grey'});
}>
<Text style={{backgroundColor: this.state.backgroundColor1}}>
<Text style={styles.switchButtonsText}>BASIC</Text>
</Text>
</TouchableOpacity>
<TouchableOpacity onPress={
(userType) => this.selectionOnPress("INTERMEDIATE");
this.setState({backgroundColor2: this.state.backgroundColor2 == 'grey'? 'orange' : 'grey'});
}>
<Text style={{backgroundColor: this.state.backgroundColor2}>
<Text style={styles.switchButtonsText}>INTERMEDIATE</Text>
</Text>
</TouchableOpacity>
<TouchableOpacity onPress={
(userType) => this.selectionOnPress("ADVANCED");
this.setState({backgroundColor3: this.state.backgroundColor3 == 'grey'? 'orange' : 'grey', backgroundColor1: 'grey'});
}>
<Text style={{backgroundColor: this.state.backgroundColor}}>
<Text style={styles.switchButtonsText}>ADVANCED</Text>
</Text>
</TouchableOpacity>
Simplified example:
//jsx
// asign default class name to your buttons with desired default color,
// onclick change said class to active css class which will have different background color
<div>
<button onClick={this.handleClick} className='btn-default'>basic</button>
<button onClick={this.handleClick} className='btn-default'>intermediate</button>
<button onClick={this.handleClick} className='btn-default'>advance</button>
</div>
//js
// this method select parent element of your button which is also parent
// element for other buttons and then gets all other buttons in button
// variable via children property
handleClick(event) {
const buttons = event.target.parentElement.children;
for(let i = 0; i < buttons.length; i++) {
//here you set all buttons to default color
buttons[i].classList.add('btn-default');
buttons[i].classList.remove('btn-active');
}
//here you add active class(color) to button you originally clicked
event.target.classList.add('btn-active');
}
//css
.btn-default {
background-color: grey;
}
.btn-active {
background-color: orange;
}