Adapter for RecyclerView(only 21KB).RecyclerView万能适配器(仅21KB)
Adapter for RecyclerView
compile 'com.lin:poweradapter:1.8@aar'
public class AnalogAdapter extends SingleAdapter<Analog, AnalogAdapter.ChildViewHolder> {
public AnalogAdapter(@Nullable Object listener) {
super(listener);
}
@Override
public boolean isSelectable(@IntRange(from = 0) int position) {
return true;
}
@Override
public ChildViewHolder onCreateVHolder(ViewGroup parent, int viewType) {
return new ChildViewHolder(parent, R.layout.analog_item);
}
@Override
public void onBindVHolder(AnalogAdapter.ChildViewHolder holder, int position) {
final Context context = holder.itemView.getContext();
final Analog analog = getItem(position);
holder.title.setText(analog.text);
if (analog.resId > 0) {
holder.icon.setImageResource(analog.resId);
holder.icon.setVisibility(View.VISIBLE);
} else {
holder.icon.setVisibility(View.GONE);
}
}
static class ChildViewHolder extends BaseViewHolder {
@BindView(android.R.id.icon)
ImageView icon;
@BindView(android.R.id.title)
TextView title;
ChildViewHolder(@NonNull ViewGroup parent, @LayoutRes int layoutResId) {
super(parent, layoutResId);
}
}
}
单击:implements SingleAdapter.OnItemClickListener
@Override
public void onItemClick(View v, int position) {
Toast.makeText(this, "onItemClick-> position : " + position + " value : " + adapter.getItem(position).text, Toast.LENGTH_SHORT).show();
}
双击:implements SingleAdapter.OnItemLongClickListener
@Override
public boolean onItemLongClick(View v, int position) {
Toast.makeText(this, "onItemLongClick-> position : " + position + " value : " + adapter.getItem(position).text, Toast.LENGTH_SHORT).show();
return true;
}
public class ChatAdapter extends MultiAdapter<Chat, PowerViewHolder> {
public ChatAdapter(@Nullable Object listener) {
super(listener);
delegatesManager.addDelegate(new LeftTextAdapterDelegate());
delegatesManager.addDelegate(new RightTextAdapterDelegate());
delegatesManager.addDelegate(new LeftFileAdapterDelegate());
delegatesManager.addDelegate(new RightFileAdapterDelegate());
delegatesManager.addDelegate(new LeftPhotoAdapterDelegate());
delegatesManager.addDelegate(new RightPhotoAdapterDelegate());
delegatesManager.addDelegate(new LeftVoiceAdapterDelegate());
delegatesManager.addDelegate(new RightVoiceAdapterDelegate());
delegatesManager.setFallbackDelegate(new DefaultAdapterDelegate<Chat>());
}
}
public class LeftTextAdapterDelegate extends AdapterDelegate<Chat, PowerViewHolder> {
@Override
protected boolean isForViewType(@NonNull Chat items, int position) {
return items instanceof TextChat && !items.isFromMyself;
}
@NonNull
@Override
protected ChildViewHolder onCreateViewHolder(ViewGroup parent) {
return new ChildViewHolder(parent, R.layout.left_text_chat_item);
}
@Override
protected void onBindViewHolder(@NonNull Chat item, int position, @NonNull PowerViewHolder holder, @NonNull List<Object> payloads) {
ChildViewHolder vh = (ChildViewHolder) holder;
TextChat textChat = (TextChat) item;
vh.textView.setText(textChat.message);
}
static class ChildViewHolder extends BaseViewHolder {
@BindView(R.id.text_view)
TextView textView;
ChildViewHolder(@NonNull ViewGroup parent, @LayoutRes int layoutResId) {
super(parent, layoutResId);
}
}
}
其它几个类同。
使用的是第三方库,看例子
使用的是第三方库,看例子
使用StaggeredGridLayoutManager,看例子
adapter重写
@Override
public boolean isSelectable(@IntRange(from = 0) int position) {
return true;
}
adapter.setMode(MODE_SINGLE);
adapter.setMode(MODE_MULTI);
listener = new EndlessRecyclerViewScrollListener((LinearLayoutManager) recyclerView.getLayoutManager(), adapter) {
@Override
public void onLoadMore(int page, int totalItemsCount, RecyclerView view) {
count++;
if (count < 6) {
adapter.setLoadMore(false);
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
adapter.addAll(DatabaseService.getSampleData(30));
adapter.setLoadMore(true);
}
}, 2000);
} else {
adapter.setLoadMore(false);
}
}
};
recyclerView.addOnScrollListener(listener);
adapter.setItems(DatabaseService.getSampleData(40));
adapter.setLoadMore(true);
重置
listener.resetState();
adapter.setItems(DatabaseService.getSampleData(30));
adapter.setLoadMore(true);
public class HeaderFooterAdapter extends SingleAdapter<Analog, BaseViewHolder> {
public HeaderFooterAdapter(@Nullable Object listener) {
super(listener);
}
@Override
public boolean isSelectable(@IntRange(from = 0) int position) {
return true;
}
@Override
public BaseViewHolder onCreateVHolder(ViewGroup parent, int viewType) {
return new ChildViewHolder(parent, R.layout.analog_item);
}
@Override
protected BaseViewHolder getHeaderHolder(ViewGroup parent) {
return new HeaderViewHolder(parent, R.layout.header_layout);
}
@Override
protected BaseViewHolder getFooterHolder(ViewGroup parent) {
return new FooterViewHolder(parent, R.layout.footer_layout);
}
@Override
public void onBindViewHolder(final BaseViewHolder holder, final int position) {
super.onBindViewHolder(holder, position);
if (getItemViewType(position) == HEADER) {
final HeaderViewHolder vh = (HeaderViewHolder) holder;
vh.icon.setImageResource(R.drawable.ic_airplay);
} else if (getItemViewType(position) == FOOTER) {
final FooterViewHolder vh = (FooterViewHolder) holder;
vh.icon.setImageResource(R.drawable.ic_visibility);
}
}
@Override
public void onBindVHolder(BaseViewHolder holder, int position) {
final Analog analog = getItemExcludeHeader(position);
final ChildViewHolder vh = (ChildViewHolder) holder;
vh.title.setText(analog.text);
if (analog.resId > 0) {
vh.icon.setImageResource(analog.resId);
vh.icon.setVisibility(View.VISIBLE);
} else {
vh.icon.setVisibility(View.GONE);
}
}
static class ChildViewHolder extends BaseViewHolder {
@BindView(android.R.id.icon)
ImageView icon;
@BindView(android.R.id.title)
TextView title;
ChildViewHolder(@NonNull ViewGroup parent, @LayoutRes int layoutResId) {
super(parent, layoutResId);
}
}
static class HeaderViewHolder extends BaseViewHolder {
@BindView(android.R.id.icon)
ImageView icon;
HeaderViewHolder(@NonNull ViewGroup parent, @LayoutRes int layoutResId) {
super(parent, layoutResId);
}
}
static class FooterViewHolder extends BaseViewHolder {
@BindView(android.R.id.icon)
ImageView icon;
FooterViewHolder(@NonNull ViewGroup parent, @LayoutRes int layoutResId) {
super(parent, layoutResId);
}
}
}
和多个复杂的写法一样
分组的伸缩写法和多个复杂的写法一样,不过item中的ViewHolder继承有点变化,如下:
展开的头部继承ParentExpandViewHolder,可以伸缩的部分继承ChildExpandViewHolder。
拖拽和滑动删除和一种item的一样,ViewHolder继承的是DragSwipeViewHolder,
ItemTouchHelper.Callback callback = new SimpleItemTouchHelperCallback(adapter, false, true) {
@Override
public void onSelectedChanged(RecyclerView.ViewHolder viewHolder, int actionState) {
super.onSelectedChanged(viewHolder, actionState);
swiprefresh.setEnabled(actionState == ItemTouchHelper.ACTION_STATE_IDLE);
}
};
mItemTouchHelper = new ItemTouchHelper(callback);
mItemTouchHelper.attachToRecyclerView(recyclerView);
implements OnStartDragListener并
@Override
public void onStartDrag(RecyclerView.ViewHolder viewHolder) {
mItemTouchHelper.startDrag(viewHolder);
}
AdapterDelegates
FlexibleAdapter
recyclerview-animators
Android-ItemTouchHelper-Demo
expandable-recycler-view
Copyright 2017 lin18
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
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distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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