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Kaushik Gopal
committed
ref: move pagination adapter to independent class
1 parent eefa39d commit e54e881

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2 files changed

+103
-90
lines changed

2 files changed

+103
-90
lines changed

‎app/src/main/java/com/morihacky/android/rxjava/pagination/PaginationAdapter.java‎

Lines changed: 100 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,100 @@
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package com.morihacky.android.rxjava.pagination;
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import android.support.v7.widget.RecyclerView;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.Button;
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import android.widget.TextView;
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import com.morihacky.android.rxjava.R;
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import com.morihacky.android.rxjava.rxbus.RxBus;
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import java.util.ArrayList;
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import java.util.List;
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class PaginationAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
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private static final int ITEM_LOG = 0;
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private static final int ITEM_BTN = 1;
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private final List<String> _items = new ArrayList<>();
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private final RxBus _bus;
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PaginationAdapter(RxBus bus) {
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_bus = bus;
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}
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void addItems(List<String> items) {
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_items.addAll(items);
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}
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@Override
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public int getItemViewType(int position) {
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if (position == _items.size()) {
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return ITEM_BTN;
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}
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return ITEM_LOG;
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}
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@Override
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public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
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switch (viewType) {
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case ITEM_BTN:
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return ItemBtnViewHolder.create(parent);
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default:
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return ItemLogViewHolder.create(parent);
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}
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}
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@Override
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public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
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switch (getItemViewType(position)) {
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case ITEM_LOG:
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((ItemLogViewHolder) holder).bindContent(_items.get(position));
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return;
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case ITEM_BTN:
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((ItemBtnViewHolder) holder).bindContent(_bus);
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}
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}
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@Override
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public int getItemCount() {
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return _items.size() + 1; // add 1 for paging button
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}
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private static class ItemLogViewHolder extends RecyclerView.ViewHolder {
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ItemLogViewHolder(View itemView) {
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super(itemView);
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}
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static ItemLogViewHolder create(ViewGroup parent) {
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return new ItemLogViewHolder(LayoutInflater.from(parent.getContext())
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.inflate(R.layout.item_log, parent, false));
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}
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void bindContent(String content) {
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((TextView) itemView).setText(content);
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}
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}
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static class ItemBtnViewHolder extends RecyclerView.ViewHolder {
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ItemBtnViewHolder(View itemView) {
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super(itemView);
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}
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static ItemBtnViewHolder create(ViewGroup parent) {
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return new ItemBtnViewHolder(LayoutInflater.from(parent.getContext())
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.inflate(R.layout.item_btn, parent, false));
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}
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void bindContent(RxBus bus) {
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((Button) itemView).setText(R.string.btn_demo_pagination_more);
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itemView.setOnClickListener(v -> bus.send(new ItemBtnViewHolder.PageEvent()));
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}
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static class PageEvent {
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}
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}
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}

‎app/src/main/java/com/morihacky/android/rxjava/pagination/PaginationFragment.java‎

Lines changed: 3 additions & 90 deletions
Original file line numberDiff line numberDiff line change
@@ -7,9 +7,7 @@
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.Button;
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import android.widget.ProgressBar;
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import android.widget.TextView;
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import com.morihacky.android.rxjava.MainActivity;
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import com.morihacky.android.rxjava.R;
@@ -34,7 +32,7 @@ public class PaginationFragment extends BaseFragment {
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@Bind(R.id.progress_paging) ProgressBar _progressBar;
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private CompositeSubscription _subscriptions;
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private TestAdapter _adapter;
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private PaginationAdapter _adapter;
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private RxBus _bus;
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private PublishSubject<Integer> _paginator;
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@@ -48,7 +46,7 @@ public void onActivityCreated(@Nullable Bundle savedInstanceState) {
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layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
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_pagingList.setLayoutManager(layoutManager);
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_adapter = new TestAdapter(_bus);
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_adapter = new PaginationAdapter(_bus);
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_pagingList.setAdapter(_adapter);
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_paginator = PublishSubject.create();
@@ -77,7 +75,7 @@ public void onStart() {
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// I'm using an Rxbus purely to hear from a nested button click
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// we don't really need Rx for this part. it's just easy ¯\_(ツ)_/¯
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Subscription s1 = _bus.asObservable().subscribe(event -> {
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if (event instanceof ItemBtnViewHolder.PageEvent) {
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if (event instanceof PaginationAdapter.ItemBtnViewHolder.PageEvent) {
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// trigger the paginator for the next event
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int nextPage = _adapter.getItemCount() - 1;
@@ -127,89 +125,4 @@ public View onCreateView(LayoutInflater inflater,
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}
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private static class TestAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
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static final int ITEM_LOG = 0;
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static final int ITEM_BTN = 1;
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final List<String> _items = new ArrayList<>();
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final RxBus _bus;
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TestAdapter(RxBus bus) {
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_bus = bus;
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}
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void addItems(List<String> items) {
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_items.addAll(items);
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}
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@Override
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public int getItemViewType(int position) {
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if (position == _items.size()) {
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return ITEM_BTN;
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}
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return ITEM_LOG;
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}
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@Override
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public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
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switch (viewType) {
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case ITEM_BTN:
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return ItemBtnViewHolder.create(parent);
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default:
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return ItemLogViewHolder.create(parent);
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}
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}
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@Override
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public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
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switch (getItemViewType(position)) {
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case ITEM_LOG:
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((ItemLogViewHolder) holder).bindContent(_items.get(position));
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return;
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case ITEM_BTN:
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((ItemBtnViewHolder) holder).bindContent(_bus);
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}
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}
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@Override
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public int getItemCount() {
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return _items.size() + 1; // add 1 for paging button
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}
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}
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private static class ItemLogViewHolder extends RecyclerView.ViewHolder {
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ItemLogViewHolder(View itemView) {
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super(itemView);
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}
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static ItemLogViewHolder create(ViewGroup parent) {
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return new ItemLogViewHolder(LayoutInflater.from(parent.getContext())
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.inflate(R.layout.item_log, parent, false));
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}
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void bindContent(String content) {
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((TextView) itemView).setText(content);
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}
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}
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private static class ItemBtnViewHolder extends RecyclerView.ViewHolder {
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ItemBtnViewHolder(View itemView) {
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super(itemView);
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}
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static ItemBtnViewHolder create(ViewGroup parent) {
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return new ItemBtnViewHolder(LayoutInflater.from(parent.getContext())
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.inflate(R.layout.item_btn, parent, false));
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}
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void bindContent(RxBus bus) {
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((Button) itemView).setText(R.string.btn_demo_pagination_more);
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itemView.setOnClickListener(v -> bus.send(new PageEvent()));
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}
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static class PageEvent {
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}
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}
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}

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