React Native, I can't tap without closing keyboard - reactjs

Here is my phone screen I tried ScrollView with keyboardShouldPersistTaps, but it didn't work. I have a ScrollView for Autocomplete suggestions, and when user can types there, they should also be able to select from suggestions. However, without closing keyboard, it is not possible in my case. Here is my work
<ScrollView
scrollEnabled={false}
keyboardShouldPersistTaps={true}>
<View style={{ maxHeight: 220 }}>
<ScrollView style={Style.suggestionContainer}
scrollEnabled={true} >
{this.state.showOptions.map(this.renderSuggestions)}
</ScrollView>
</View>
</ScrollView>
.
.
.
private renderSuggestions(option: MultiInputQuestionOption) {
return (
<TouchableOpacity onPress={this.addSelection.bind(this, option)} >
<Text style={Style.suggestions}>
{option[this.props.titleKey]}
</Text>
</TouchableOpacity >
)
}
Is there any possible solution?

You need to pass the key keyboardShouldPersistTaps=‘handled’ on scroll view which contains the TextInput:-
<ScrollView keyboardShouldPersistTaps=‘handled’>
...
<TextInput />
</ScrollView>
And if you are having issue inside of a modal then You need to pass key keyboardShouldPersistTaps=‘handled’ on All scrollview which are in component stack for the screen. In the ancestors/parent of the Modal also.
Like in my case:
const CountryModal=(props)=>{
return(
<Modal
visible={props.visible}
transparent={false}
{...props}
>
<ScrollView keyboardShouldPersistTaps=‘handled’>
…
</ScrollView>
/>
)
}
In Parent class:
In the parent class where ancestors of modal is there. You need to pass key keyboardShouldPersistTaps=‘handled’`.
class Parent extends Component{
render(){
return(
<ScrollView keyboardShouldPersistTaps=‘handled’> // pass ‘handled’ here also
…
<CountryModal /> // Its the same modal being used as a component in parent class.
</ScrollView>
)
}

Try adding
keyboardShouldPersistTaps={'always'}
to the second ScrollView as well.

Use the 'handled' value for keyboardShouldPersistTaps property because the true value is deprecated. use the keyboardShouldPersistTaps in two ScrollViews and handle your keyboard state in somewhere else by using Keyboard.dismiss() function.

Related

Moving to Next Screen in react native

If i click on Lungs Banks i want to move to another screen How can i do this
<KeyboardAvoidingWrapper>
<WelcomeStyledContainer>
<StatusBar style="dark" />
<OrganHeading>
<OrganHeadingText>Donate Able Organ</OrganHeadingText>
</OrganHeading>
<View style={styles.container}>
<View style={styles.Box}>
<View style={styles.inerBox}>
<CardStyle>
<CardImage source={require('./../assets/organImage/lungs.png')} />
<CardText>Lungs Bank</CardText>
</CardStyle>
</View>
</View>
Below solution will work for you if you are using React-navigation.
UI Screen:
<CardText onPress={()=>navigation.navigate("YOUR SCREEN NAME HERE")}>Lungs Bank</CardText>
Card Text Component:
const CardText = ({onPress}) => {
return <Text onPress={onPress}>{props.children}</Text>;
}
Thanks!
You can use react-navigation
library to get started with navigation in react-native.

How do I tap only once on touchable opacity placed inside a scrollview?

I already researched similar questions on the topic, so please don't be in a hurry to close this question.
I have a search screen, where I type a search term and I fetch listed results. Once fetched, I want to tap on any one of them and navigate to that page details object. My initial first tap is never been detected, but my second is. My component:
return (
<View>
<TextInput
value={query}
placeholder="Type Here..."
onChangeText={(search) => setQuery(search)}
/>
{fetching ? (
<Spinner
visible={fetching}
textContent={'Fetching data...'}
textStyle={{ fontSize: 14 }}
/>
) : null}
{items ? (
<ScrollView keyboardShouldPersistTaps={true}>
<FlatList
numColumns={1}
horizontal={false}
data={items}
keyExtractor={(item) => item.id}
renderItem={({ item }) => (
<TouchableOpacity
onPress={() =>
navigation.navigate('Item Details', { id: item.id })
}>
<ItemDisplay item={item} keyboardShouldPersistTaps="always" />
</TouchableOpacity>
)}
/>
</ScrollView>
) : null}
</View>
);
My ItemDisplay is just a row of item's photo and item's id. Nothing fancy.
As suggested on the similar questions, I do use <ScrollView keyboardShouldPersistTaps={true}> and <ItemDisplay item={item} keyboardShouldPersistTaps="always" /> However it doesn't help m, I still need to tap twice. Any ideas on how do I fix this? I am testing it on android, if that matters.
I also tried <ScrollView keyboardDismissMode="on-drag" keyboardShouldPersistTaps={"always"} > but this doesnt help as well.
If I understood your problem correctly, you are facing an issue clicking an item when the Keyboard is present.
If so you can simply pass keyboardShouldPersistTaps as always to your FlatList and then the children of the list will receive taps when an item is pressed.
Also, you shouldn't be using a ScrollView to wrap your Flatlist, if they are both having the same orientation, numColumns isn't required as you have passed it as 1
You can read more about keyboardShouldPersistTaps at https://reactnative.dev/docs/0.64/scrollview#keyboardshouldpersisttaps
Take a look at this Live Snack to see it in action.

Changing Visibility of a button inside the component dynamically

I am using React-Navigation but I guess You don't really need to have a prior knowledge about it.
So I have a header Component which looks like this
const Header = (props) => {
return (
<View style={headerContainer}>
<View>
<Button onPress={() => props.navigation.navigate('Home')}
title="Go Back"/>
</View>
<Text style={header}> Knicx
<Text style={headerSecondary}> Crypto Ticker </Text>
</Text>
</View>
)
}
Now, In the above notice the button, Which I am currently showing on all the pages
<Button onPress={() => props.navigation.navigate('Home')}
title="Go Back"/>
But I don't want it to be there on some specific pages, like HomeScreen to say the least.
Now, One solution is to remove the <Header /> component in my homepage, Copy the above code snippet, past it in my HomeScreen and remove the Component ( sort of like hardcoding ) or two create two Header component, one with button and one without button
[Question:] But I was thinking if we could toggle the visibility of button dynamically or stack it on the top of <Header /> ? Can someone please tell me how can we do it? (No, We can set the opacity of the button to zero and change it whenever we need it)
[Update:] We can use redux to manage/pass the state but the problem is that in React-native we do not have display: none and I don't want to change use the opacity
Send showHomeButton: boolean as a prop to header
const Header = props => (
<View style={headerContainer}>
{this.props.showHomeButton && (
<View>
<Button onPress={() => props.navigation.navigate('Home')} title="Go Back" />
</View>
)}
<Text style={header}>
{' '}
Knicx
<Text style={headerSecondary}> Crypto Ticker </Text>
</Text>
</View>
);

react-native-elements: The last few items in the Transaction List cannot be viewed at bottom

I am using react-native-elements to speed up the development of my react-native app.
I am using react-native ScrollView in my List element to enable scroll functionality.
Unfortunately, it seems that the List element is overflowing at the bottom, hiding the last few list item elements from view
Any idea why this is the case?
EDIT: Here is the render function of the list component
render () {
const { transactions, handleEditTransaction, handleDeleteTransaction } = this.props
return (
<View>
<View>
<List>
<ScrollView>
{
transactions.map((item, i) => (
<TransactionListItem
key={i}
item={item}
/>
))
}
</ScrollView>
</List>
</View>
</View>
)
}
I had the same problem. To solve this, go to the root <View> and add style={{flex: 1}}.
This means to also add this to the parent component if necessary.
<View style={{flex:1}}>
<ScrollView>
//Content here
</ScrollView>
</View>
parent component (if required)...
<View style={{flex:1}}>
<ChildComponent />
</View>

react-native onPress() toggles automatically on a loop component rendering

I'm looping through a native-base <Card dataArray={data} /> component rendering some components with Buttons. It was working alright (Listed all components as expected) but I soon added an onPress event to the Button and got an automatic onPress bug, weird enough it runs (clicks hence runs the bounded function) only once while components suppose to render with those buttons are many.
//- Inside constructor I bind testLogs
this.testLogs = this.testLogs(this);
//- Outside render...
testLogs(value) {
console.log(value);
}
//- Inside return of render()
<Card dataArray={devices}
renderRow={(theme) =>
<CardItem>
{(theme.picture) ?
<Thumbnail size={100} source={theme.picture} />:
<Thumbnail size={100} source={defaultImage} />
}
<Text style={{fontSize: 16}}> {theme.name} </Text>
<Button primary style={{marginRight: 10}}> Command </Button>
<Button success onPress={this.testLogs} > Edit </Button>
</CardItem>
}>
</Card>
I should also say all the rendered components don't run the onPress={this.testLogs} bound function when i click them after they render.
What could be triggering this? Or is loop rendering not the best approach to this?
Thank you.
Use onPress={this.testlogs.bind(this)}

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