ListView、Spinner、RecycleView的CommonAdapter

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参考网上，自己总结的项目中经常用到的adapter

ListView

package com.wiseljz.dy.common;import android.content.Context;import android.support.annotation.LayoutRes;import android.util.SparseArray;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.TextView;import java.util.List;/** * Created by l.wang(516066490@qq.com) on 2017/7/18. */public abstract class CommonAdapter<T> extends BaseAdapter{    protected List<T> data;    protected Context context;    public CommonAdapter(Context context) {        this(context, null);    }    public CommonAdapter(Context context, List<T> data) {        this.context = context;        this.data = data;    }    @Override    public int getCount() {        return data == null ? 0 : data.size();    }    @Override    public T getItem(int position) {        if(data == null || position<0 ||position>=data.size())        {            return null;        }        return data.get(position);    }    @Override    public long getItemId(int position) {        return position;    }    @Override    public View getView(int position, View convertView, ViewGroup parent) {        ViewHolder holder = ViewHolder.get(context, convertView, parent,                getItemLayoutRes(position), position);        convert(holder, getItem(position));        return holder.convertView;    }    /**     * 设置adapter item layout resource id     *      * @return     */    public abstract @LayoutRes    int getItemLayoutRes(int position);    /**     * 开发者实现该方法，进行业务处理     */    public abstract void convert(ViewHolder holder, T item);    public List<T> getData() {        return data;    }    public void setData(List<T> data) {        this.data = data;    }    public static class ViewHolder {        private View convertView;        private SparseArray<View> views;        private int position;        public ViewHolder(Context context, ViewGroup parent, int layoutId,                          int position) {            this.position = position;            this.views = new SparseArray<View>();            convertView = LayoutInflater.from(context).inflate(layoutId,                    parent, false);            convertView.setTag(this);        }        public static ViewHolder get(Context context, View convertView,                                     ViewGroup parent, int layoutId, int position) {            if (convertView == null) {                return new ViewHolder(context, parent, layoutId, position);            } else {                ViewHolder holder = (ViewHolder) convertView.getTag();                holder.position = position;                return holder;            }        }        public View findViewById(int id) {            View v = views.get(id);            if (v == null) {                v = convertView.findViewById(id);                views.put(id, v);            }            return v;        }        public View getConvertView() {            return convertView;        }        public ViewHolder setText(int viewResId, String text) {            TextView tv = (TextView) findViewById(viewResId);            tv.setText(text);            return this;        }        public int getPosition() {            return position;        }    }}

使用：

        mNavAdapter = new CommonAdapter<Node>(context)        {            @Override            public int getItemLayoutRes(int position) {                return R.layout.item_nav1;            }            @Override            public void convert(ViewHolder holder, Node item) {                holder.setText(R.id.tv, item.getCname());            }        };        mNav.setAdapter(mNavAdapter);

Spinner

package com.wiseljz.dy.adapter;import android.content.Context;import android.content.res.Resources;import android.support.annotation.LayoutRes;import android.support.annotation.Nullable;import android.support.v7.widget.ThemedSpinnerAdapter;import android.util.SparseArray;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.TextView;import com.wiseljz.dy.common.CommonAdapter;import java.util.List;/** * Created by l.wang(516066490@qq.com) on 2017/7/18. */public abstract class SpinnerThemedAdapter<T> extends CommonAdapter<T> implements ThemedSpinnerAdapter{    private final ThemedSpinnerAdapter.Helper mDropDownHelper;    public SpinnerThemedAdapter(Context context) {        this(context, null);    }    public SpinnerThemedAdapter(Context context, List<T> data) {        super(context, data);        mDropDownHelper = new ThemedSpinnerAdapter.Helper(context);    }    @Override    public void setDropDownViewTheme(@Nullable Resources.Theme theme) {        mDropDownHelper.setDropDownViewTheme(theme);    }    @Nullable    @Override    public Resources.Theme getDropDownViewTheme() {        return mDropDownHelper.getDropDownViewTheme();    }    @Override    public View getDropDownView(int position, View convertView, ViewGroup parent) {        ViewHolder holder = ViewHolder.get(context, convertView, parent,                getDropDownItemLayoutRes(position), position);        dropdownConvert(holder,getItem(position));        return holder.getConvertView();    }    public abstract void dropdownConvert(ViewHolder holder, T item);    public abstract @LayoutRes int getDropDownItemLayoutRes(int position);}

使用

        mSalaryExpectAdapter = new SpinnerThemedAdapter<String>(context, Arrays.asList(getResources().getStringArray(R.array.salary_expect)))        {            @Override            public void dropdownConvert(ViewHolder holder, String item) {                holder.setText(R.id.tv, item);            }            @Override            public int getDropDownItemLayoutRes(int position) {                return R.layout.item_spinner_dropdown;            }            @Override            public int getItemLayoutRes(int position) {                return R.layout.item_spinner;            }            @Override            public void convert(ViewHolder holder, String item) {                holder.setText(R.id.tv, item);            }        };        mSpinnerSalaryExpect.setAdapter(mSalaryExpectAdapter);

RecycleView

package com.wiseljz.dy.common;import android.support.v7.widget.RecyclerView;import java.util.List;/** * Created by l.wang(516066490@qq.com) on 2017/7/18. */public  abstract class CommonRVAdapter<T> extends RecyclerView.Adapter{    private List<T> data;    public CommonRVAdapter() {    }    public CommonRVAdapter(List<T> data) {        this.data = data;    }    @Override    public int getItemCount() {        return data == null ? 0 : data.size();    }    public List<T> getData() {        return data;    }    public void setData(List<T> data) {        this.data = data;    }}

使用

        mSubNav.setLayoutManager(new StaggeredGridLayoutManager(1, StaggeredGridLayoutManager.HORIZONTAL));        mSubNavAdapter = new CommonRVAdapter<Node>()        {            @Override            public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {                View v = LayoutInflater.from(context).inflate(R.layout.item_subnav, parent, false);                return new RecyclerView.ViewHolder(v)                {                };            }            @Override            public void onBindViewHolder(final RecyclerView.ViewHolder holder, int position) {                ImageView iv = (ImageView) holder.itemView.findViewById(R.id.iv);                Utils.loadIntoUseFitWidth(context, ApiManager.IMG_HOST + getData().get(holder.getAdapterPosition()).getImg_url(), iv);                iv.findViewById(R.id.iv).setOnClickListener(new View.OnClickListener()                {                    @Override                    public void onClick(View v) {                        mPresenter.onSubNavClick(getData().get(holder.getAdapterPosition()));                    }                });            }        };        mSubNav.setAdapter(mSubNavAdapter);

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