How to center selected item inside an horizontal recyclerview?
0
I have a recylerview with an arrayList that contain all the day of the week. When I tap to select the day, the recyclerview is shown. Then, the third day of the week is already selected(by default). I need to center it to the recyclerview and then, when I selected another day in my recycler, it need to re-center again with the selected item.
That's my code:
val recyclerViewGiorni = view.giorniRV
val horizontalLayoutManager = LinearLayoutManager(context, LinearLayoutManager.HORIZONTAL, false)
recyclerViewGiorni.layoutManager = horizontalLayoutManager
adapter = ButtonPromemoriaAdapter(giorniPromemoria)
recyclerViewGiorni.adapter = adapter
val snapHelper = LinearSnapHelper()
snapHelper.attachToRecyclerView(recyclerViewGiorni)
recyclerViewGiorni.addOnScrollListener(object : RecyclerView.OnScrollListener() {
override fun onScrollStateChanged(recyclerView: RecyclerView, newState: Int) {
super.onScrollStateChanged(recyclerView, newState)
if (newState == RecyclerView.SCROLL_STATE_IDLE) {
val centerView = snapHelper.findSnapView(horizontalLayoutManager)
val pos = horizontalLayoutManager.getPosition(centerView!!)
Log.e("Snapped Item Position:", "" + pos)
}
}
})
java
android kotlin asked Jan 18 at 16:07
NicolaNicola
808
add a comment |
0
I have a recylerview with an arrayList that contain all the day of the week. When I tap to select the day, the recyclerview is shown. Then, the third day of the week is already selected(by default). I need to center it to the recyclerview and then, when I selected another day in my recycler, it need to re-center again with the selected item.
That's my code:
val recyclerViewGiorni = view.giorniRV
val horizontalLayoutManager = LinearLayoutManager(context, LinearLayoutManager.HORIZONTAL, false)
recyclerViewGiorni.layoutManager = horizontalLayoutManager
adapter = ButtonPromemoriaAdapter(giorniPromemoria)
recyclerViewGiorni.adapter = adapter
val snapHelper = LinearSnapHelper()
snapHelper.attachToRecyclerView(recyclerViewGiorni)
recyclerViewGiorni.addOnScrollListener(object : RecyclerView.OnScrollListener() {
override fun onScrollStateChanged(recyclerView: RecyclerView, newState: Int) {
super.onScrollStateChanged(recyclerView, newState)
if (newState == RecyclerView.SCROLL_STATE_IDLE) {
val centerView = snapHelper.findSnapView(horizontalLayoutManager)
val pos = horizontalLayoutManager.getPosition(centerView!!)
Log.e("Snapped Item Position:", "" + pos)
}
}
})
java
android kotlin asked Jan 18 at 16:07
NicolaNicola
808
add a comment |
0
0
0
I have a recylerview with an arrayList that contain all the day of the week. When I tap to select the day, the recyclerview is shown. Then, the third day of the week is already selected(by default). I need to center it to the recyclerview and then, when I selected another day in my recycler, it need to re-center again with the selected item.
That's my code:
val recyclerViewGiorni = view.giorniRV
val horizontalLayoutManager = LinearLayoutManager(context, LinearLayoutManager.HORIZONTAL, false)
recyclerViewGiorni.layoutManager = horizontalLayoutManager
adapter = ButtonPromemoriaAdapter(giorniPromemoria)
recyclerViewGiorni.adapter = adapter
val snapHelper = LinearSnapHelper()
snapHelper.attachToRecyclerView(recyclerViewGiorni)
recyclerViewGiorni.addOnScrollListener(object : RecyclerView.OnScrollListener() {
override fun onScrollStateChanged(recyclerView: RecyclerView, newState: Int) {
super.onScrollStateChanged(recyclerView, newState)
if (newState == RecyclerView.SCROLL_STATE_IDLE) {
val centerView = snapHelper.findSnapView(horizontalLayoutManager)
val pos = horizontalLayoutManager.getPosition(centerView!!)
Log.e("Snapped Item Position:", "" + pos)
}
}
})
java
android kotlin asked Jan 18 at 16:07
NicolaNicola
808
I have a recylerview with an arrayList that contain all the day of the week. When I tap to select the day, the recyclerview is shown. Then, the third day of the week is already selected(by default). I need to center it to the recyclerview and then, when I selected another day in my recycler, it need to re-center again with the selected item.
That's my code:
val recyclerViewGiorni = view.giorniRV
val horizontalLayoutManager = LinearLayoutManager(context, LinearLayoutManager.HORIZONTAL, false)
recyclerViewGiorni.layoutManager = horizontalLayoutManager
adapter = ButtonPromemoriaAdapter(giorniPromemoria)
recyclerViewGiorni.adapter = adapter
val snapHelper = LinearSnapHelper()
snapHelper.attachToRecyclerView(recyclerViewGiorni)
recyclerViewGiorni.addOnScrollListener(object : RecyclerView.OnScrollListener() {
override fun onScrollStateChanged(recyclerView: RecyclerView, newState: Int) {
super.onScrollStateChanged(recyclerView, newState)
if (newState == RecyclerView.SCROLL_STATE_IDLE) {
val centerView = snapHelper.findSnapView(horizontalLayoutManager)
val pos = horizontalLayoutManager.getPosition(centerView!!)
Log.e("Snapped Item Position:", "" + pos)
}
}
})
java
android kotlin java
android kotlin asked Jan 18 at 16:07
NicolaNicola
808
asked Jan 18 at 16:07
NicolaNicola
808
asked Jan 18 at 16:07
NicolaNicola
808
asked Jan 18 at 16:07
NicolaNicola
808
asked Jan 18 at 16:07
NicolaNicola
808
808
add a comment |
add a comment |
1 Answer
1
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oldest
votes
0
I think you're looking for a SpanHelper
SnapHelper snapHelper = new LinearSnapHelper();
snapHelper.attachToRecyclerView(yourRecyclerView);
Please look at
- https://developer.android.com/reference/android/support/v7/widget/SnapHelper
- https://blog.mindorks.com/using-snaphelper-in-recyclerview-fc616b6833e8
- https://stackoverflow.com/a/39036351/3569545
for more info.
answered Jan 18 at 16:14
DemigodDemigod
1,227720
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
I think you're looking for a SpanHelper
SnapHelper snapHelper = new LinearSnapHelper();
snapHelper.attachToRecyclerView(yourRecyclerView);
Please look at
- https://developer.android.com/reference/android/support/v7/widget/SnapHelper
- https://blog.mindorks.com/using-snaphelper-in-recyclerview-fc616b6833e8
- https://stackoverflow.com/a/39036351/3569545
for more info.
answered Jan 18 at 16:14
DemigodDemigod
1,227720
add a comment |
0
I think you're looking for a SpanHelper
SnapHelper snapHelper = new LinearSnapHelper();
snapHelper.attachToRecyclerView(yourRecyclerView);
Please look at
- https://developer.android.com/reference/android/support/v7/widget/SnapHelper
- https://blog.mindorks.com/using-snaphelper-in-recyclerview-fc616b6833e8
- https://stackoverflow.com/a/39036351/3569545
for more info.
answered Jan 18 at 16:14
DemigodDemigod
1,227720
add a comment |
0
0
0
I think you're looking for a SpanHelper
SnapHelper snapHelper = new LinearSnapHelper();
snapHelper.attachToRecyclerView(yourRecyclerView);
Please look at
- https://developer.android.com/reference/android/support/v7/widget/SnapHelper
- https://blog.mindorks.com/using-snaphelper-in-recyclerview-fc616b6833e8
- https://stackoverflow.com/a/39036351/3569545
for more info.
answered Jan 18 at 16:14
DemigodDemigod
1,227720
I think you're looking for a SpanHelper
SnapHelper snapHelper = new LinearSnapHelper();
snapHelper.attachToRecyclerView(yourRecyclerView);
Please look at
- https://developer.android.com/reference/android/support/v7/widget/SnapHelper
- https://blog.mindorks.com/using-snaphelper-in-recyclerview-fc616b6833e8
- https://stackoverflow.com/a/39036351/3569545
for more info.
answered Jan 18 at 16:14
DemigodDemigod
1,227720
answered Jan 18 at 16:14
DemigodDemigod
1,227720
answered Jan 18 at 16:14
DemigodDemigod
1,227720
answered Jan 18 at 16:14
DemigodDemigod
1,227720
1,227720
add a comment |
add a comment |
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