強(qiáng)大的BaseRecyclerViewAdapterHelper使用

2019-11-09 15:15:19

字體：大中小

供稿：網(wǎng)友

介紹

這里寫圖片描述相信大家RecyclerView應(yīng)該不會(huì)陌生,大多數(shù)開發(fā)者應(yīng)該都使用上它了，它也是google推薦替換ListView的控件，但是用過它的同學(xué)應(yīng)該都知道它在某些方面并沒有ListView使用起來方便，需要我們額外的編寫代碼，今天就給大家介紹一個(gè)開源庫(kù)BaseRecyclerViewAdapterHelper，有了它讓你使用RecyclerView的時(shí)候，和ListView一樣的好用！那么你要問了，BaseRecyclerViewAdapterHelper能做什么？ 優(yōu)化Adapter代碼（減少百分之70%代碼） 添加點(diǎn)擊item點(diǎn)擊、長(zhǎng)按事件、以及item子控件的點(diǎn)擊事件 添加加載動(dòng)畫（一行代碼輕松切換5種默認(rèn)動(dòng)畫） 添加頭部、尾部、下拉刷新、上拉加載（感覺又回到ListView時(shí)代） 設(shè)置自定義的加載更多布局 添加分組（隨心定義分組頭部） 自定義不同的item類型（簡(jiǎn)單配置、無需重寫額外方法） 設(shè)置空布局（比Listview的setEmptyView還要好用！） 添加拖拽item

如何使用它？

先在 build.gradle 的 repositories 添加:

allPRojects { repositories { ... maven { url "https://jitpack.io" } } }

然后增加dependencies

dependencies { compile 'com.github.CymChad:BaseRecyclerViewAdapterHelper:v1.5.8'}

如何使用它來創(chuàng)建Adapter？

public class QuickAdapter extends BaseQuickAdapter<Status> { public QuickAdapter(Context context) { super(context, 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()) .setImageUrl(R.id.tweetAvatar, item.getUserAvatar()) .setVisible(R.id.tweetRT, item.isRetweet()) .linkify(R.id.tweetText); }}

或者

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)); } }

添加item點(diǎn)擊事件

mQuickAdapter.setOnRecyclerViewItemClickListener(new BaseQuickAdapter.OnRecyclerViewItemClickListener() { @Override public void onItemClick(View view, int position) { }});

添加動(dòng)畫

// 一行代碼搞定（默認(rèn)為漸顯效果）quickAdapter.openLoadAnimation();

不喜歡漸顯動(dòng)畫可以這樣更換

// 默認(rèn)提供5種方法（漸顯、縮放、從下到上，從左到右、從右到左）quickAdapter.openLoadAnimation(BaseQuickAdapter.ALPHAIN);

另外，如果內(nèi)置的動(dòng)畫效果不滿意，也可易自定義

// 自定義動(dòng)畫如此輕松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) }; } });

使用它添加頭部添加尾部

這里寫圖片描述

mQuickAdapter.addHeaderView(getView());mQuickAdapter.addFooterView(getView());

添加多種類型item

public class MultipleItemQuickAdapter extends BaseMultiItemQuickAdapter<MultipleItem> { public MultipleItemQuickAdapter(Context context, List data) { super(context, data); addItmeType(MultipleItem.TEXT, R.layout.text_view); addItmeType(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; } }}

使用它加載更多

mQuickAdapter.setOnLoadMoreListener(PAGE_SIZE, new BaseQuickAdapter.RequestLoadMoreListener() { @Override public void onLoadMoreRequested() { if (mCurrentCounter >= TOTAL_COUNTER) { mRecyclerView.post(new Runnable() { @Override public void run() { mQuickAdapter.isNextLoad(false); } }); } else { // reqData mCurrentCounter = mQuickAdapter.getItemCount(); mQuickAdapter.isNextLoad(true); } } });

使用分組

public class SectionAdapter extends BaseSectionQuickAdapter<MySection> { public SectionAdapter(Context context, int layoutResId, int sectionHeadResId, List data) { super(context, 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); if(!item.isMroe)helper.setVisible(R.id.more,false); else helper.setOnClickListener(R.id.more, new View.OnClickListener() { @Override public void onClick(View v) { Toast.makeText(context,item.header+"more..",Toast.LENGTH_LONG).show(); } }); }

使用setEmptyView

mQuickAdapter.setEmptyView(getView());

添加子布局多個(gè)控件的點(diǎn)擊事件 Adapter

protected void convert(BaseViewHolder helper, Status item) { helper.setOnClickListener(R.id.tweetAvatar, new OnItemChildClickListener()) .setOnClickListener(R.id.tweetName, new OnItemChildClickListener());}

Activity

mQuickAdapter.setOnRecyclerViewItemChildClickListener(new BaseQuickAdapter.OnRecyclerViewItemChildClickListener() { @Override public void onItemChildClick(BaseQuickAdapter adapter, View view, int position) { String content = null; Status status = (Status) adapter.getItem(position); switch (view.getId()) { case R.id.tweetAvatar: content = "img:" + status.getUserAvatar(); break; case R.id.tweetName: content = "name:" + status.getUserName(); break; } Toast.makeText(AnimationUseActivity.this, content, Toast.LENGTH_LONG).show(); } });

實(shí)現(xiàn)拖拽 以前用listview或者gridview進(jìn)行拖拽是很麻煩的，現(xiàn)在好了，使用RecyclerView可以很方便的實(shí)現(xiàn)拖拽，想怎么拖就怎么拖

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) {} }; ItemDragAndSwipeCallback itemDragAndSwipeCallback = new ItemDragAndSwipeCallback(mAdapter); ItemTouchHelper itemTouchHelper = new ItemTouchHelper(itemDragAndSwipeCallback); itemTouchHelper.attachToRecyclerView(mRecyclerView); // 開啟拖拽 mAdapter.enableDragItem(itemTouchHelper, R.id.textView, true); mAdapter.setOnItemDragListener(onItemDragListener); // 開啟滑動(dòng)刪除 mAdapter.enableSwipeItem(); mAdapter.setOnItemSwipeListener(onItemSwipeListener);

BaseRecyclerViewAdapterHelper還能實(shí)現(xiàn)很多功能，這里我就不詳解了，有需要的可以直接到git上下載下來體驗(yàn)體驗(yàn) 點(diǎn)擊查看

參考別人Demo

簡(jiǎn)單使用

這里寫圖片描述

public class MultipleItemAdapter extends BaseQuickAdapter<String> { private final int TEXT_TYPE = 1; private int mTextLayoutResId; public MultipleItemAdapter(Context context, List data, int... layoutResId) { super(context, layoutResId[0], data); mTextLayoutResId = layoutResId[1]; } @Override protected int getDefItemViewType(int position) { if (position % 2 == 0) return TEXT_TYPE; return super.getDefItemViewType(position); } @Override protected BaseViewHolder onCreateDefViewHolder(ViewGroup parent, int viewType) { if (viewType == TEXT_TYPE) return new TextViewHolder(getItemView(mTextLayoutResId, parent)); return super.onCreateDefViewHolder(parent, viewType); } @Override protected void onBindDefViewHolder(BaseViewHolder holder, String item) { if (holder instanceof TextViewHolder) holder.setText(R.id.tv, item); } @Override protected void convert(BaseViewHolder helper, String item) { helper.setImageUrl(R.id.iv, item); } public class TextViewHolder extends BaseViewHolder { public TextViewHolder(View itemView) { super(itemView.getContext(), itemView); } }}

上一篇：cocos2dx camera lua的設(shè)置

下一篇：phys_to_virt(),ioreamp(),IO_ADDRESS() 的區(qū)別