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Merge pull request #173 from rubensousa/fix_edge_alignment
Fix edge alignment when a small number of items is visible in the screen
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99 changes: 99 additions & 0 deletions
99
.../src/main/java/com/rubensousa/dpadrecyclerview/sample/ui/screen/list/ShortListFragment.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| package com.rubensousa.dpadrecyclerview.sample.ui.screen.list | ||
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| import android.os.Bundle | ||
| import android.view.LayoutInflater | ||
| import android.view.View | ||
| import android.view.ViewGroup | ||
| import androidx.compose.ui.unit.dp | ||
| import androidx.fragment.app.Fragment | ||
| import androidx.recyclerview.widget.RecyclerView | ||
| import com.rubensousa.dpadrecyclerview.DpadViewHolder | ||
| import com.rubensousa.dpadrecyclerview.ParentAlignment | ||
| import com.rubensousa.dpadrecyclerview.sample.R | ||
| import com.rubensousa.dpadrecyclerview.sample.databinding.MainAdapterItemFeatureBinding | ||
| import com.rubensousa.dpadrecyclerview.sample.databinding.ScreenRecyclerviewBinding | ||
| import com.rubensousa.dpadrecyclerview.sample.ui.dpToPx | ||
| import com.rubensousa.dpadrecyclerview.sample.ui.viewBinding | ||
| import com.rubensousa.dpadrecyclerview.sample.ui.widgets.common.ItemAnimator | ||
| import com.rubensousa.dpadrecyclerview.spacing.DpadLinearSpacingDecoration | ||
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|
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| class ShortListFragment : Fragment(R.layout.screen_recyclerview) { | ||
|
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| private val binding by viewBinding(ScreenRecyclerviewBinding::bind) | ||
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| override fun onViewCreated(view: View, savedInstanceState: Bundle?) { | ||
| super.onViewCreated(view, savedInstanceState) | ||
| binding.recyclerView.apply { | ||
| setParentAlignment( | ||
| ParentAlignment( | ||
| edge = ParentAlignment.Edge.NONE, | ||
| fraction = 0.5f | ||
| ) | ||
| ) | ||
| addItemDecoration( | ||
| DpadLinearSpacingDecoration.create( | ||
| itemSpacing = dpToPx(16.dp), | ||
| perpendicularEdgeSpacing = dpToPx(48.dp) | ||
| ) | ||
| ) | ||
| adapter = Adapter( | ||
| items = List(5) { i -> | ||
| "Item $i" | ||
| } | ||
| ) | ||
| requestFocus() | ||
| } | ||
| } | ||
|
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| internal class Adapter( | ||
| private val items: List<String>, | ||
| ) : RecyclerView.Adapter<Adapter.ViewHolder>() { | ||
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| override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder { | ||
| return ViewHolder( | ||
| MainAdapterItemFeatureBinding.inflate( | ||
| LayoutInflater.from(parent.context), parent, false | ||
| ) | ||
| ) | ||
| } | ||
|
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| override fun getItemCount(): Int = items.size | ||
|
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| override fun onBindViewHolder(holder: ViewHolder, position: Int) { | ||
| holder.bind(items[position]) | ||
| } | ||
|
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| override fun onViewRecycled(holder: ViewHolder) { | ||
| super.onViewRecycled(holder) | ||
| holder.recycle() | ||
| } | ||
|
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| class ViewHolder( | ||
| private val binding: MainAdapterItemFeatureBinding, | ||
| ) : RecyclerView.ViewHolder(binding.root), DpadViewHolder { | ||
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| private val animator = ItemAnimator(binding.root) | ||
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| init { | ||
| itemView.setOnFocusChangeListener { v, hasFocus -> | ||
| if (hasFocus) { | ||
| animator.startFocusGainAnimation() | ||
| } else { | ||
| animator.startFocusLossAnimation() | ||
| } | ||
| } | ||
| } | ||
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| fun bind(item: String) { | ||
| binding.textView.text = item | ||
| } | ||
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| fun recycle() { | ||
| animator.cancel() | ||
| } | ||
|
|
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| } | ||
|
|
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| } | ||
|
|
||
| } |
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5 changes: 5 additions & 0 deletions
5
sample/src/main/res/drawable/list_text_container_background.xml
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| <?xml version="1.0" encoding="utf-8"?> | ||
| <selector xmlns:android="http://schemas.android.com/apk/res/android"> | ||
| <item android:drawable="@color/focused_text" android:state_focused="true" /> | ||
| <item android:drawable="@color/transparent" /> | ||
| </selector> |
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