RecyclerView作为Android最常用的控件,受益群体几乎是所有Android开发者,希望更多开发者能够一起来维护这个项目,把这个项目做得更好,帮助更多人。**Star我的项目可加Q群558178792,申请的时候把GitHub的账号名字备注上否则不予通过,谢谢配合。**中国有句古话叫“授人以鱼不如授人以渔”,不仅仅提供使用,还写了如何实现的原理:
- 「RecyclerView.Adapter优化了吗?」
- 「BaseRecyclerAdapter之添加动画」
- 「BaseRecyclerAdapter之添加不同布局(头部尾部)」
- 「BaseRecyclerAdapter之添加不同布局(优化篇)」
- 「BaseRecyclerAdapter之分组功能原理分析」
- 「RecyclerView相关优秀文集」
- 「BRVAH分享吧」
一个强大并且灵活的RecyclerViewAdapter,欢迎使用。(喜欢的可以Star一下)
它能做什么?(下载 apk)
- 优化Adapter代码(减少百分之70%代码)
- 添加点击item点击、长按事件、以及item子控件的点击事件
- 添加加载动画(一行代码轻松切换5种默认动画)
- 添加头部、尾部、下拉刷新、上拉加载(感觉又回到ListView时代)
- 设置自定义的加载更多布局
- 添加分组(随心定义分组头部)
- 自定义不同的item类型(简单配置、无需重写额外方法)
- 设置空布局(比Listview的setEmptyView还要好用!)
- 添加拖拽item
先在 build.gradle 的 repositories 添加:
allprojects {
repositories {
...
maven { url "https://jitpack.io" }
}
}
然后在dependencies添加:
dependencies {
compile 'com.github.CymChad:BaseRecyclerViewAdapterHelper:v1.9.7'
}
public class QuickAdapter extends BaseQuickAdapter<Status> {
public QuickAdapter() {
super(R.layout.tweet, DataServer.getSampleData());
}
@Override
protected void convert(BaseViewHolder helper, Status item) {
helper.setText(R.id.tweetName, item.getUserName())
.setText(R.id.tweetText, item.getText())
.setText(R.id.tweetDate, item.getCreatedAt())
.setVisible(R.id.tweetRT, item.isRetweet())
.linkify(R.id.tweetText);
Glide.with(mContext).load(item.getUserAvatar()).crossFade().into((ImageView) helper.getView(R.id.iv));
}
}
Adapter
mRecyclerView.addOnItemTouchListener(new OnItemClickListener( ){
@Override
public void SimpleOnItemClick(BaseQuickAdapter adapter, View view, int position) {
Toast.makeText(RecyclerClickItemActivity.this, "" + Integer.toString(position), Toast.LENGTH_SHORT).show();
}
});
首先需要添加需要点击触发的 childview id
@Override
protected void convert(BaseViewHolder helper, Status item) {
helper.setText(R.id.tweetName, item.getUserName())
.setText(R.id.tweetText, item.getText())
.setText(R.id.tweetDate, item.getCreatedAt())
.setVisible(R.id.tweetRT, item.isRetweet())
.addOnClickListener(R.id.tweetAvatar)
.addOnClickListener(R.id.tweetName)
.addOnLongClickListener(R.id.tweetText)
.linkify(R.id.tweetText);
Glide.with(mContext).load(item.getUserAvatar()).crossFade().placeholder(R.mipmap.def_head).transform(new GlideCircleTransform(mContext)).into((ImageView) helper.getView(R.id.tweetAvatar));
}
Activity
mRecyclerView.addOnItemTouchListener(new OnItemChildClickListener( ) {
@Override
public void SimpleOnItemChildClick(BaseQuickAdapter adapter, View view, int position) {
Toast.makeText(RecyclerClickItemActivity.this, "" + Integer.toString(position), Toast.LENGTH_SHORT).show();
}
});
mRecyclerView.addOnItemTouchListener(new OnItemLongClickListener( ) {
@Override
public void SimpleOnItemLongClick(BaseQuickAdapter adapter, View view, int position) {
Toast.makeText(RecyclerClickItemActivity.this, "" + Integer.toString(position), Toast.LENGTH_SHORT).show();
}
});
首先需要添加需要点击触发的 childview id
@Override
protected void convert(BaseViewHolder helper, Status item) {
helper.setText(R.id.tweetName, item.getUserName())
.setText(R.id.tweetText, item.getText())
.setText(R.id.tweetDate, item.getCreatedAt())
.setVisible(R.id.tweetRT, item.isRetweet())
.addOnClickListener(R.id.tweetAvatar)
.addOnClickListener(R.id.tweetName)
.addOnLongClickListener(R.id.tweetText)
.linkify(R.id.tweetText);
Glide.with(mContext).load(item.getUserAvatar()).crossFade().placeholder(R.mipmap.def_head).transform(new GlideCircleTransform(mContext)).into((ImageView) helper.getView(R.id.tweetAvatar));
}
然后
mRecyclerView.addOnItemTouchListener(new OnItemChildLongClickListener( ) {
@Override
public void SimpleOnItemChildLongClick(BaseQuickAdapter adapter, View view, int position) {
Toast.makeText(RecyclerClickItemActivity.this, "" + Integer.toString(position), Toast.LENGTH_SHORT).show();
}
});
mRecyclerView.addOnItemTouchListener(new SimpleClickListener() {
@Override
public void onItemClick(BaseQuickAdapter adapter, View view, int position) {
Toast.makeText(RecyclerClickItemActivity.this, "" + Integer.toString(position), Toast.LENGTH_SHORT).show();
}
@Override
public void onItemLongClick(BaseQuickAdapter adapter, View view, int position) {
Toast.makeText(RecyclerClickItemActivity.this, "" + Integer.toString(position), Toast.LENGTH_SHORT).show();
}
@Override
public void onItemChildClick(BaseQuickAdapter adapter, View view, int position) {
Toast.makeText(RecyclerClickItemActivity.this, "" + Integer.toString(position), Toast.LENGTH_SHORT).show();
}
@Override
public void onItemChildLongClick(BaseQuickAdapter adapter, View view, int position) {
Toast.makeText(RecyclerClickItemActivity.this, "" + Integer.toString(position), Toast.LENGTH_SHORT).show();
}
});
// 一行代码搞定(默认为渐显效果)
quickAdapter.openLoadAnimation();
不喜欢渐显动画可以这样更换
// 默认提供5种方法(渐显、缩放、从下到上,从左到右、从右到左)
quickAdapter.openLoadAnimation(BaseQuickAdapter.ALPHAIN);
还是没你喜欢的,你可以自定义
// 自定义动画如此轻松
quickAdapter.openLoadAnimation(new BaseAnimation() {
@Override
public Animator[] getAnimators(View view) {
return new Animator[]{
ObjectAnimator.ofFloat(view, "scaleY", 1, 1.1f, 1),
ObjectAnimator.ofFloat(view, "scaleX", 1, 1.1f, 1)
};
}
});
// add
mQuickAdapter.addHeaderView(getView());
mQuickAdapter.addFooterView(getView());
// remove
removeHeaderView(getView);
removeFooterView(getView);
// or
removeAllHeaderView();
removeAllFooterView();
mQuickAdapter.openLoadMore(PAGE_SIZE, true);
mQuickAdapter.setOnLoadMoreListener(new BaseQuickAdapter.RequestLoadMoreListener() {
@Override
public void onLoadMoreRequested() {
mRecyclerView.post(new Runnable() {
@Override
public void run() {
if (mCurrentCounter >= TOTAL_COUNTER) {
mQuickAdapter.notifyDataChangedAfterLoadMore(false);
} else {
mQuickAdapter.notifyDataChangedAfterLoadMore(DataServer.getSampleData(PAGE_SIZE), true);
mCurrentCounter = mQuickAdapter.getItemCount();
}
}
});
}
});
mQuickAdapter.setLoadingView(customView);
public class SectionAdapter extends BaseSectionQuickAdapter<MySection> {
public SectionAdapter(int layoutResId, int sectionHeadResId, List data) {
super(layoutResId, sectionHeadResId, data);
}
@Override
protected void convert(BaseViewHolder helper, MySection item) {
helper.setImageUrl(R.id.iv, (String) item.t);
}
@Override
protected void convertHead(BaseViewHolder helper,final MySection item) {
helper.setText(R.id.header, item.header);
helper.setOnClickListener(R.id.more, new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(context,item.header+"more..",Toast.LENGTH_LONG).show();
}
});
}
public class MultipleItemQuickAdapter extends BaseMultiItemQuickAdapter<MultipleItem> {
public MultipleItemQuickAdapter(List data) {
super(data);
addItemType(MultipleItem.TEXT, R.layout.text_view);
addItemType(MultipleItem.IMG, R.layout.image_view);
}
@Override
protected void convert(BaseViewHolder helper, MultipleItem item) {
switch (helper.getItemViewType()) {
case MultipleItem.TEXT:
helper.setImageUrl(R.id.tv, item.getContent());
break;
case MultipleItem.IMG:
helper.setImageUrl(R.id.iv, item.getContent());
break;
}
}
}
mQuickAdapter.setEmptyView(getView());
OnItemDragListener onItemDragListener = new OnItemDragListener() {
@Override
public void onItemDragStart(RecyclerView.ViewHolder viewHolder, int pos){}
@Override
public void onItemDragMoving(RecyclerView.ViewHolder source, int from, RecyclerView.ViewHolder target, int to) {}
@Override
public void onItemDragEnd(RecyclerView.ViewHolder viewHolder, int pos) {}
}
OnItemSwipeListener onItemSwipeListener = new OnItemSwipeListener() {
@Override
public void onItemSwipeStart(RecyclerView.ViewHolder viewHolder, int pos) {}
@Override
public void clearView(RecyclerView.ViewHolder viewHolder, int pos) {}
@Override
public void onItemSwiped(RecyclerView.ViewHolder viewHolder, int pos) {}
};
public class ItemDragAdapter extends BaseItemDraggableAdapter<String> {
public ItemDragAdapter(List data) {
super(R.layout.item_draggable_view, data);
}
@Override
protected void convert(BaseViewHolder helper, String item) {
helper.setText(R.id.tv, item);
}
}
mAdapter = new ItemDragAdapter(mData);
ItemDragAndSwipeCallback itemDragAndSwipeCallback = new ItemDragAndSwipeCallback(mAdapter);
ItemTouchHelper itemTouchHelper = new ItemTouchHelper(itemDragAndSwipeCallback);
itemTouchHelper.attachToRecyclerView(mRecyclerView);
// 开启拖拽
mAdapter.enableDragItem(itemTouchHelper, R.id.textView, true);
mAdapter.setOnItemDragListener(onItemDragListener);
// 开启滑动删除
mAdapter.enableSwipeItem();
mAdapter.setOnItemSwipeListener(onItemSwipeListener);
// 如果不想使用继承,可以只实现IExpandable接口
// AbstractExpandableItem只是个帮助类
public class Level0Item extends AbstractExpandableItem<Level1Item> {...}
public class Level1Item extends AbstractExpandableItem<Person> {...}
public class Person {...}
in adapter code
public class ExpandableItemAdapter extends BaseMultiItemQuickAdapter<MultiItemEntity> {
public ExpandableItemAdapter(List<MultiItemEntity> data) {
super(data);
addItemType(TYPE_LEVEL_0, R.layout.item_expandable_lv0);
addItemType(TYPE_LEVEL_1, R.layout.item_expandable_lv1);
addItemType(TYPE_PERSON, R.layout.item_text_view);
}
@Override
protected void convert(final BaseViewHolder holder, final MultiItemEntity item) {
switch (holder.getItemViewType()) {
case TYPE_LEVEL_0:
....
//set view content
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int pos = holder.getAdapterPosition();
if (lv0.isExpanded()) {
collapse(pos);
} else {
expand(pos);
}
}});
break;
case TYPE_LEVEL_1:
// similar with level 0
break;
case TYPE_PERSON:
//just set the content
break;
}
}
In activity code
public class ExpandableUseActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
...
ArrayList<MultiItemEntity> list = generateData();
ExpandableItemAdapter adapter = new ExpandableItemAdapter(list);
mRecyclerView.setAdapter(adapter);
}
private ArrayList<MultiItemEntity> generateData() {
ArrayList<MultiItemEntity> res = new ArrayList<>();
for (int i = 0; i < lv0Count; i++) {
Level0Item lv0 = new Level0Item(...);
for (int j = 0; j < lv1Count; j++) {
Level1Item lv1 = new Level1Item(...);
for (int k = 0; k < personCount; k++) {
lv1.addSubItem(new Person());
}
lv0.addSubItem(lv1);
}
res.add(lv0);
}
return res;
}
}
Use Custom BaseViewHolder
// 当使用自定义的BaseViewHolder时,需要重写此函数以创建ViewHolder
protected K createBaseViewHolder(View view) {
return (K) new BaseViewHolder(view);
}
持续更新!,所以推荐Star项目