万能适配器（RecyclerView、ListView、GridView）

https://github.com/GitLqr/LQRAdapterLibrary

LQRAdapterLibrary

万能适配器（RecyclerView、ListView、GridView）

只需要导入一句即可使用两种适配器：

compile 'com.lqr.adapter:library:1.0.2'

一、LQRAdapterForAbsListView

1、创建适配器

LQRAdapterForAbsListView<数据类型>（上下文，数据集合，item的布局引用）

2、在convert方法中对item进行数据设置

3、例子：

private List<String> mData = new ArrayList<>();for (int i = 0; i < 100; i++) {    mData.add("item " + i);}//ListViewmLv.setAdapter(new LQRAdapterForAbsListView<String>(this, mData, R.layout.item_tv_list) {    @Override    public void convert(LQRViewHolderForAbsListView helper, String item, int position) {        helper.setText(R.id.tv, item);    }});//GridViewmGv = (GridView) findViewById(R.id.gv);mGv.setAdapter(new LQRAdapterForAbsListView<String>(this, mData, R.layout.item_tv_list) {    @Override    public void convert(LQRViewHolderForAbsListView helper, String item, int position) {        helper.setText(R.id.tv, item);    }});

4、helper的使用

LQRViewHolderForAbsListView中提供了许多常规用的控件操作，如设置文字、文字颜色、背景、显隐等，同时每个方法都是返回this，这意味着可以链式操作，方便快速开发。

二、LQRAdapterForRecyclerView

1、创建适配器

LQRAdapterForRecyclerView<数据类型>（上下文，数据集合，item的布局引用）

2、在convert方法中对item进行数据设置

3、例子：

//RecyclerViewmRv.setAdapter(new LQRAdapterForRecyclerView<String>(this, mData, R.layout.item_tv_list) {    @Override    public void convert(LQRViewHolderForRecyclerView helper, String item, int position) {        helper.setText(R.id.tv, item);    }});

4、helper的使用

LQRViewHolderForRecyclerView中提供了许多常规用的控件操作，如设置文字、文字颜色、背景、显隐等，同时每个方法都是返回this，这意味着可以链式操作，方便快速开发。

5、添加头部、尾部

LQRAdapterForRecyclerView<String>  mAdapter = new LQRAdapterForRecyclerView(...);//必须使用HeaderAndFooterAdapter作为RecyclerView的适配器mRv.setAdapter(mAdapter.getHeaderAndFooterAdapter());//添加头部private void testAddHeaderView() {    TextView tv = new TextView(this);    ...    tv.setText("heaer");    mAdapter.addHeaderView(tv);}//添加尾部private void testAddFooterView() {    TextView tv = new TextView(this);    ...    tv.setText("footer");    mAdapter.addFooterView(tv);}

6、多视图类型支持（viewType）

若项目中需要用到多种条目视图类型，则需要重新getItemViewType方法，其返回值是不同类型对应的视图布局资源id，如：

private static final int NOTIFICATION = R.layout.item_notification;private static final int SEND_TEXT = R.layout.item_text_send;private static final int RECEIVE_TEXT = R.layout.item_text_receive;private static final int SEND_STICKER = R.layout.item_sticker_send;private static final int RECEIVE_STICKER = R.layout.item_sticker_receive;private static final int SEND_IMAGE = R.layout.item_image_send;private static final int RECEIVE_IMAGE = R.layout.item_image_receive;private static final int SEND_VIDEO = R.layout.item_video_send;private static final int RECEIVE_VIDEO = R.layout.item_video_receive;private static final int SEND_LOCATION = R.layout.item_location_send;private static final int RECEIVE_LOCATION = R.layout.item_location_receive;@Overridepublic int getItemViewType(int position) {    IMMessage msg = getData().get(position);    MsgTypeEnum msgType = msg.getMsgType();    if (msgType == MsgTypeEnum.notification) {        return NOTIFICATION;    }    if (msgType == MsgTypeEnum.text) {        if (msg.getDirect() == MsgDirectionEnum.Out) {            return SEND_TEXT;        } else {            return RECEIVE_TEXT;        }    }    if (msgType == MsgTypeEnum.custom) {        if (msg.getDirect() == MsgDirectionEnum.Out) {            return SEND_STICKER;        } else {            return RECEIVE_STICKER;        }    }    if (msgType == MsgTypeEnum.image) {        if (msg.getDirect() == MsgDirectionEnum.Out) {            return SEND_IMAGE;        } else {            return RECEIVE_IMAGE;        }    }    if (msgType == MsgTypeEnum.video) {        if (msg.getDirect() == MsgDirectionEnum.Out) {            return SEND_VIDEO;        } else {            return RECEIVE_VIDEO;        }    }    if (msgType == MsgTypeEnum.location) {        if (msg.getDirect() == MsgDirectionEnum.Out) {            return SEND_LOCATION;        } else {            return RECEIVE_LOCATION;        }    }    return super.getItemViewType(position);}

以上是本人项目中用到的代码，以此作为参考。

7、其他

建议与LQRRecyclerView一起使用，不需要考虑LayoutManager和分割线的情况，开发效率大大提高。

三、事件控制

不管是LQRAdapterForAbsListView还是LQRAdapterForRecyclerView，都可以通过使用适配器对item进行事件监听，代码如下：

mAdapter.setOnItemClickListener(new OnItemClickListener() {    @Override    public void onItemClick(LQRViewHolder helper, ViewGroup parent, View itemView, int position) {        helper.setText(R.id.tv, "我被点击了");    }});mAdapter.setOnItemLongClickListener(new OnItemLongClickListener() {    @Override    public boolean onItemLongClick(LQRViewHolder helper, ViewGroup parent, View itemView, int position) {        helper.setText(R.id.tv, "我被长按了");        return false;    }});mAdapter.setOnItemTouchListener(new OnItemTouchListener() {    @Override    public boolean onItemTouch(LQRViewHolder helper, View childView, MotionEvent event, int position) {        helper.setText(R.id.tv, "我被触摸了");        return false;    }});