I am using recycler view inside BottomSheetDialogFragment with dialog state behaviour as BottomSheetBehavior.STATE_EXPANDED but when I notify recycler view with notifyDataSetChanged the bottomSheet scrolls down.
The expected behaviour is that the bottomSheet height remains same.
Please help me in achieving this??
Related
This is for a React Native app.
One of my screens has a ScrollView wrapped around a TextInput. The ScrollView has a lot of height - moreso than the TextInput when it's blank - so the behavior I want is that if a user taps on any of the 'blank space' in the ScrollView, it will put focus in the TextInput.
The code I have so far boils down to this:
export function MainInput() {
const ref_textinput = useRef();
const onTapScrollViewBody = () => {
console.log("Detected tap")
ref_textinput.current?.focus()
}
return (
<TouchableWithoutFeedback onPress={onTapScrollViewBody}>
<ScrollView style={styles.parentScrollView}>
<TextInput
ref={ref_textinput}
...
It's not working unfortunately. When focus isn't in the TextInput, the first time I tap in the blank space of the ScrollView, I do see the console log, but focus doesn't go into the TextInput, nor do further taps on the blank space trigger more console logs. However, tapping into the TextInput (which obviously puts focus back on it) then tapping back out will trigger the console log.
Am I misunderstanding how useRef works here?
Your understanding of useRef is fine, it's the understanding of the ScrollView that needs some help. If two elements that share coordinates are touchable, React Native will give the touch to the "top" element (whether by z-index, render order, etc). Your example creates the following hierarchy:
|-TouchableWithoutFeedback
|-ScrollView
|-TextInput
If you press within the TextInput's area, it will always capture the touch, as you found. If you press within the ScrollView's area, but outside of the text input, your touch is captured by the ScrollView, which will try to use your touch to scroll it. Only when you touch outside the ScrollView should your TouchableWithoutFeedback activate.
You still want the ScrollView to scroll, so when do you want your tap to focus the text input? You could delete your Touchable and use an event exposed by ScrollView, like
<ScrollView
onScrollEndDrag={() => ref_textinput.current?.focus()}
// and/or
onMomentumScrollEnd={() => ref_textinput.current?.focus()}
...
A solution that would handle tapping differently from scrolling could be achieved using react-native-gesture-handler, but it would be more involved.
Hi I have tooltip buttons in my TextInput when user press open a tooltip and I'm taking TextInput values from an array because of that I'm using ScrollView or FlatList.
My problem is that the tooltip of the TOP TextInput is not all visible. As you see in the below tooltip of StoreKey stays outside of ScrollView(PINK).
Is there any way to show it outside of the ScrollView ?
Note: I can use also FlatList.
I have a CordinatorLayout in which there is CollapsingToolbarLayout and below it is NestedScrollView to achieve collapsing with:
app:layout_behavior="#string/appbar_scrolling_view_behavior"
Inside nested scroll view there is a RecyclerView. I need to auto scroll the RecyclerView to a particular position when the Fragment is called. Need to set it programmatically. Any help please.
try this:
Handler(Looper.getMainLooper()).postDelayed(
{
binding.nestedScrollContainer.smoothScrollTo(0, binding.myRecyclerview.bottom)
binding.myRecyclerview.nestedScrollBy(0, binding.myRecyclerview.bottom)
},
200
)
Is there any way we can set the swipe able area in react-native-swiper? For example, from the mock screen, I would like the screen to be swiped only when the user swipe on the area marked by black border.
PS: The default behaviour is to let the screen swipe from any where in the swiper component.
Mock Screen
I need to SHOW a view when scroll is started and HIDE a view when scroll is stopped.
To detect the scroll movement, there is two ways:
Called when the user begins to drag the scroll view.
onScrollBeginDrag={this.showView}
onScrollEndDrag={this.hideView}
Called when the momentum scroll starts and Ends
onMomentumScrollBegin={this.showView}
onMomentumScrollEnd={this.hideView}
Exptected Behaviour:
If continues scroll is happening, it should not hide the view even onScrollEndDrag is called and still show the view until onMomentumScrollEnd.
If continues scroll is not active, its should hide when onScrollEndDrag called
Actual Behaviour:
If continues scroll is happening, its hide the view when onScrollEndDrag is called and shows the view again until onMomentumScrollEnd. So in between view is disappeared and then its appears when drag released.
Call a debounced function in onScroll.
Debouncing will mean it is called at the end (or start) of a bunch of
events. More Info
// Debounce
this.ViewVisibility = lodash.debounce(this.ViewVisibility, 100);
onScroll={() => {
this.ViewVisibility();
}}
ViewVisibility = () => {
console.log('Debouncing');
this.hideView();
}