I'm building an app with react-navigation-4.2.1. The app has multiple stack navigators. So there are a lots of navigation.push('Routename')
calls.
Trouble is when the control surface (i.e. TouchableOpacity) is tapped rapidly multiple times (first one, and the rest during screen transition) I end up pushing multiple screens into the stack. Is there a way to restrict the surface to the first tap/call of push()?
2
votes
1 Answers
2
votes
The component below is what i use to make things touchable. it handle multiple touches in small period of time.
- Use component below instead of
TouchableOpacity
. wrap any thing you want with this component and it will be touchable.
<SafeTouch
onPress={...}
>
<Text> hey! im a touchable text now</Text>
</SafeTouch>
- The component below is written used
TypeScirpt
. - every touch within 300ms after first touch will be ignored(thats where help you with your problem).
import * as React from 'react'
import { TouchableOpacity } from 'react-native'
interface ISafeTouchProps {
onPress: () => void
onLongPress?: () => void
onPressIn?: () => void
onPressOut?: () => void,
activeOpacity?: number,
disabled?: boolean,
style: any
}
export class SafeTouch extends React.PureComponent<ISafeTouchProps> {
public static defaultProps: ISafeTouchProps = {
onPress: () => { },
onLongPress: () => { },
onPressIn: () => { },
onPressOut: () => { },
disabled: false,
style: null
}
private isTouchValid: boolean = true
private touchTimeout: any = null
public constructor(props: ISafeTouchProps) {
super(props)
{// Binding methods
this.onPressEvent = this.onPressEvent.bind(this)
}
}
public render(): JSX.Element {
return (
<TouchableOpacity
onPress={this.onPressEvent}
onLongPress={this.props.onLongPress}
onPressIn={this.props.onPressIn}
onPressOut={this.props.onPressOut}
activeOpacity={this.props.activeOpacity}
disabled={this.props.disabled}
style={[{minWidth: 24, minHeight: 24}, this.props.style]}
>
{
this.props.children
}
</TouchableOpacity>
)
}
public componentWillUnmount() {
this.clearTimeoutIfExists()
}
private onPressEvent(): void {
requestAnimationFrame(() => {
if (this.isTouchValid === false) {
return
}
this.isTouchValid = false
this.clearTimeoutIfExists()
this.touchTimeout = setTimeout(() => {
this.isTouchValid = true
}, 300)
if (typeof this.props.onPress === 'function') {
this.props.onPress()
}
})
}
private clearTimeoutIfExists(): void {
if (this.touchTimeout != null) {
clearTimeout(this.touchTimeout)
this.touchTimeout = null
}
}
}