android recyclerview adaper封装

关于Recyclerview,是比较好用的一个控件，代替了listview和gridview,灵活性比较强。基础的就不说了，我要讲的是如何封装一个基类的recyclerview adaper

代码：

/**  * @author:guobiaoWang on 2015/12/24  */ public abstract class BaseRecylerAdapter extends RecyclerView.Adapter<BaseRecylerHolder> implements View.OnClickListener {    public List<Object> mList;    public Activity mContext;    public RecyclerViewItemClickListener mListener;    public BaseRecylerAdapter(Activity context, Object list) {        this.mList = new ArrayList<>();        //noinspection unchecked,unchecked,unchecked  this.mList.addAll((List<Object>) list);        this.mContext = context;    }    @Override    public BaseRecylerHolder onCreateViewHolder(ViewGroup parent, int viewType) {        View view = getView(parent,viewType);        return createViewHolder(view,viewType);    }    @Override    public void onBindViewHolder(BaseRecylerHolder baseHolder, int position) {    }    @Override    public int getItemCount() {        if (mList != null)            return mList.size();        return 0;    }    public void setOnItemClickListner(RecyclerViewItemClickListener listner) {        this.mListener = listner;    }    public abstract BaseRecylerHolder createViewHolder(View view,int viewType);    public abstract View getView(ViewGroup parent,int viewType);}

item回调接口：

public interface RecyclerViewItemClickListener {    void onItemClick(View view, int position);}

基础Holder类:

/**  * @author:guobiaoWang on 2015/12/24  */ public class BaseRecylerHolder extends RecyclerView.ViewHolder {    public BaseRecylerHolder(View itemView) {        super(itemView);    }}

下面是调用:大家别看实体类和布局名称，看如何实现就行了，只有一个item布局时：

public class ChatHeadAdapter extends BaseRecylerAdapter {    public ChatHeadAdapter(Activity context, Object list) {        super(context, list);    }    @Override    public BaseRecylerHolder createViewHolder(View view, int viewType) {        return new ChatHeadHolder(view);    }    @Override    public View getView(ViewGroup parent, int viewType) {        return LayoutInflater.from(mContext).inflate(R.layout.chat_head_item, null);    }    @Override    public void onBindViewHolder(BaseRecylerHolder baseHolder, final int position) {        ChatHeadHolder holder = (ChatHeadHolder) baseHolder;        ChatScope chatScope = (ChatScope) mList.get(position);        holder.name.setText(chatScope.getName());        if (chatScope.getIcon() instanceof String)            holder.head.setImageURI(Uri.parse(chatScope.getIcon().toString()));        else  holder.head.setBackgroundResource((int) chatScope.getIcon());        holder.itemView.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                mListener.onItemClick(v, position);            }        });    }    @Override    public void onClick(View v) {    }    private class ChatHeadHolder extends BaseRecylerHolder {        private SimpleDraweeView head;        private TextView name;        public ChatHeadHolder(View itemView) {            super(itemView);            head = (SimpleDraweeView) itemView.findViewById(R.id.chat_head_item_image);            name = (TextView) itemView.findViewById(R.id.chat_head_item_name);        }    }}

多个item布局时候：

package chat.adapter;import android.app.Activity;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.Button;import android.widget.TextView;import com.blk.activity.R;import com.blk.activity.base.BaseRecylerAdapter;import com.blk.activity.base.BaseRecylerHolder;import com.facebook.drawee.view.SimpleDraweeView;import chat.model.Assistants;import chat.model.CustomerService;/**  * @author:guobiaoWang on 2016/4/29  */ public class ChatChooseContactAdapter extends BaseRecylerAdapter {    public ChatChooseContactAdapter(Activity context, Object list) {        super(context, list);    }    public enum ChatType {        title, content;    }    @Override    public int getItemViewType(int position) {        if (mList.get(position) instanceof CustomerService) {            return ChatType.title.ordinal();        } else {            return ChatType.content.ordinal();        }    }    @Override    public BaseRecylerHolder createViewHolder(View view, int viewType) {        if (viewType == ChatType.title.ordinal()) {            return new ContactTitleHolder(view);        } else if (viewType == ChatType.content.ordinal()) {            return new ContactContentHolder(view);        }        return null;    }    @Override    public void onBindViewHolder(BaseRecylerHolder baseHolder, final int position) {        Object object = mList.get(position);        if (object instanceof CustomerService) {            ContactTitleHolder holder = (ContactTitleHolder) baseHolder;            CustomerService customerService = (CustomerService) object;            holder.title.setText(customerService.getMerchantsName());            holder.address.setText(customerService.getMerchantsAddress());        } else if (object instanceof Assistants) {            ContactContentHolder holder = (ContactContentHolder) baseHolder;            holder.speak.setOnClickListener(new View.OnClickListener() {                @Override                public void onClick(View v) {                    mListener.onItemClick(v, position);                }            });            Assistants assistants = (Assistants) object;            holder.name.setText(assistants.getNickName());        }    }    @Override    public View getView(ViewGroup parent, int viewType) {        View view = null;        if (viewType == ChatType.title.ordinal()) {            view = LayoutInflater.from(mContext).inflate(R.layout.chat_choose_contact_pop_title_item, null);        } else if (viewType == ChatType.content.ordinal()) {            view = LayoutInflater.from(mContext).inflate(R.layout.chat_choose_contact_pop_content_item, null);        }        return view;    }    @Override    public void onClick(View v) {    }    private class ContactTitleHolder extends BaseRecylerHolder {        private TextView title;        private TextView address;        public ContactTitleHolder(View itemView) {            super(itemView);            title = (TextView) itemView.findViewById(R.id.chat_choose_contact_pop_title_business);            address = (TextView) itemView.findViewById(R.id.chat_choose_contact_pop_title_address);        }    }    private class ContactContentHolder extends BaseRecylerHolder {        private SimpleDraweeView head;        private TextView name;        private Button speak;        public ContactContentHolder(View itemView) {            super(itemView);            head = (SimpleDraweeView) itemView.findViewById(R.id.chat_choose_contact_pop_content_head);            name = (TextView) itemView.findViewById(R.id.chat_choose_contact_pop_content_name);            speak = (Button) itemView.findViewById(R.id.chat_choose_contact_pop_content_speak);        }    }    public Assistants getAssistants(int position) throws Exception {        if (mList.get(position) instanceof Assistants) {            return (Assistants) mList.get(position);        } else {            throw new Exception();        }    }}

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