package com.auto.lyric.base.adapter;
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import android.graphics.drawable.Drawable;
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import android.view.LayoutInflater;
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import android.view.ViewGroup;
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import androidx.annotation.NonNull;
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import androidx.recyclerview.widget.RecyclerView;
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import androidx.viewbinding.ViewBinding;
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import com.auto.lyric.base.activities.BaseActivity;
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import com.auto.lyric.databinding.LayoutNullBinding;
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import com.auto.lyric.util.DeviceUtil;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.lang.reflect.ParameterizedType;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* Created by Administrator on 2021/10/27 0027.
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* T 数据类型
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* V 适配器视图
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*/
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public abstract class BaseAdapter<B extends ViewBinding,T> extends RecyclerView.Adapter {
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protected List<T> mData = new ArrayList<>();
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protected Drawable nullDrawable;
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protected String nullTxt="暂无数据";
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protected String TAG = "BaseAdapter";
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protected BaseActivity activity;
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public BaseAdapter(){
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}
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public BaseAdapter(@NonNull List<T> data){
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mData = data;
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}
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public List<T> getData() {
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return mData;
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}
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public void setData(@NonNull List<T> data){
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mData = data;
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notifyDataSetChanged();
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}
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@NonNull
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@Override
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public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
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if(viewType == 1 ){
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// get genericity "B"
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Class<B> entityClass = (Class<B>) ((ParameterizedType) this.getClass().getGenericSuperclass()).getActualTypeArguments()[0];
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try {
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/* for(Method method: entityClass.getMethods()){
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StringBuilder sb = new StringBuilder();
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for(Class type : method.getParameterTypes()){
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sb.append(type.getSimpleName()+",");
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}
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Log.e(TAG,String.format("method:%s,return:%s,param:%s",method.getName(),method.getReturnType().getSimpleName(),sb.toString()));
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}*/
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Method method = entityClass.getMethod("inflate", LayoutInflater.class,ViewGroup.class,boolean.class);//get method from name "inflate";
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B vBind = (B) method.invoke(entityClass,LayoutInflater.from(parent.getContext()),parent,false);//execute method to create a objct of viewbind;
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return new ViewBindHolder(vBind);
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} catch (SecurityException e) {
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e.printStackTrace();
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} catch (NoSuchMethodException e) {
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e.printStackTrace();
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} catch (IllegalArgumentException e) {
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e.printStackTrace();
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} catch (IllegalAccessException e) {
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e.printStackTrace();
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} catch (InvocationTargetException e) {
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Throwable t = e.getTargetException();// 获取目标异常
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t.printStackTrace();
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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return new NullViewHolder( LayoutNullBinding.inflate(LayoutInflater.from(parent.getContext()),parent,false));
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}
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@Override
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public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
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//MyLog.i(TAG,"onBindViewHolder position:"+position+" "+mData.size()+" "+getItemViewType(position));
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if(activity == null){
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activity = (BaseActivity) holder.itemView.getContext();
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}
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if(getItemViewType(position)==0){
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bindView((NullViewHolder) holder);
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}else {
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bindView((ViewBindHolder) holder, mData.size() == 0 ? null : mData.get(position), position);
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}
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}
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/**
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* 设置最后一个底部间隔
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* @param holder
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* @param position
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*/
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protected void setBottomMargin(ViewBindHolder holder, int position){
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setBottomMargin(holder,position,23);
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}
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/**
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* 设置最后一个底部间隔
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* @param holder
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* @param position 位置
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* @param dp 间距
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*/
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protected void setBottomMargin(RecyclerView.ViewHolder holder, int position,int dp){
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setBottomMargin(holder,position,dp,0);
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}
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protected void setBottomMargin(RecyclerView.ViewHolder holder, int position, int dp, int defaultDp){
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ViewGroup.MarginLayoutParams params1 = (ViewGroup.MarginLayoutParams) holder.itemView.getLayoutParams();
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if(position == mData.size() -1){
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params1.setMargins(params1.leftMargin, params1.topMargin, params1.rightMargin, DeviceUtil.convertDpToPixel(dp,holder.itemView.getContext()));
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}else{
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params1.setMargins(params1.leftMargin, params1.topMargin, params1.rightMargin, DeviceUtil.convertDpToPixel(defaultDp,holder.itemView.getContext()));
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}
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}
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protected abstract void bindView(ViewBindHolder holder,T data,int position);
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protected void bindView(NullViewHolder holder){
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}
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@Override
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public int getItemCount() {
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//默认显示空视图，若不显示空视图则重写该方法，返回mData.size()
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return mData == null || mData.size() == 0 ?1:mData.size();
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}
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@Override
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public int getItemViewType(int position) {
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//当下标为0，数据集合为0 返回0（意味当前应显示空数据视图））
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//MyLog.i(TAG,"getItemViewType position:"+position+" mdata:"+mData.size()+" "+(position ==0 && mData.size()==0));
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return position == 0 && mData.size()==0?0:1;
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}
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public class ViewBindHolder extends RecyclerView.ViewHolder{
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public B binding;
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public ViewBindHolder( B binding) {
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super(binding.getRoot());
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this.binding = binding;
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}
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}
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/**
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* 空数据显示
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* Created by Administrator on 2021/10/28 0028.
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*/
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public class NullViewHolder extends RecyclerView.ViewHolder {
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LayoutNullBinding binding;
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public NullViewHolder(LayoutNullBinding binding) {
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super(binding.getRoot());
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this.binding = binding;
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}
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}
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}
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