From b3a51f064c4dfb27f54cd9526803338d2e8dc296 Mon Sep 17 00:00:00 2001
From: Runt <qingingrunt2010@qq.com>
Date: Sat, 13 Aug 2022 16:26:49 +0000
Subject: [PATCH] 添加注释，部分优化
---
app/src/main/java/com/runt/open/mvvm/base/adapter/BaseAdapter.java | 164 ++++++++++++++++++++++++++++++------------------------
1 files changed, 92 insertions(+), 72 deletions(-)
diff --git a/app/src/main/java/com/runt/open/mvvm/base/adapter/BaseAdapter.java b/app/src/main/java/com/runt/open/mvvm/base/adapter/BaseAdapter.java
index d022444..a494dcf 100644
--- a/app/src/main/java/com/runt/open/mvvm/base/adapter/BaseAdapter.java
+++ b/app/src/main/java/com/runt/open/mvvm/base/adapter/BaseAdapter.java
@@ -1,16 +1,13 @@
package com.runt.open.mvvm.base.adapter;
-import android.graphics.drawable.Drawable;
+import android.util.Log;
import android.view.LayoutInflater;
import android.view.ViewGroup;
-
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import androidx.viewbinding.ViewBinding;
-
-import com.runt.open.mvvm.base.activities.BaseActivity;
import com.runt.open.mvvm.databinding.LayoutNullBinding;
-import com.runt.open.mvvm.util.DeviceUtil;
+import com.runt.open.mvvm.util.DimensionUtils;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
@@ -20,50 +17,69 @@
/**
* Created by Administrator on 2021/10/27 0027.
- * T 数据类型
- * V 适配器视图
+ * DATA 数据类型
+ * VB 适配器视图
*/
-public abstract class BaseAdapter<B extends ViewBinding,T> extends RecyclerView.Adapter {
+public abstract class BaseAdapter<DATA, VB extends ViewBinding> extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
- protected List<T> mData = new ArrayList<>();
+ protected List<DATA> dataList = new ArrayList<>();
+ protected OnItemClickListener<DATA> onItemClickListener;
+ public boolean showNull;
+ public float defaultMarginBottom,lastMarginBottom;
- protected Drawable nullDrawable;
- protected String nullTxt="暂无数据";
- protected String TAG = "BaseAdapter";
- protected BaseActivity activity;
-
- public BaseAdapter(){
+ public interface OnItemClickListener<DATA>{
+ void onItemClick(int position,DATA data);
}
- public BaseAdapter(@NonNull List<T> data){
- mData = data;
+ public class ViewBindHolder extends RecyclerView.ViewHolder {
+ ViewBinding binding;
+ public ViewBindHolder(ViewBinding binding) {
+ super(binding.getRoot());
+ this.binding = binding;
+ }
}
- public List<T> getData() {
- return mData;
+ public void setOnItemClickListener(OnItemClickListener<DATA> onItemClickListener) {
+ this.onItemClickListener = onItemClickListener;
}
- public void setData(@NonNull List<T> data){
- mData = data;
+ public void setData(List<DATA> list){
+ if(dataList != list) {
+ dataList.clear();
+ if (list != null) {
+ dataList.addAll(list);
+ }
+ }
notifyDataSetChanged();
+ }
+
+ public void addData(DATA data){
+ if(data != null){
+ dataList.add(data);
+ }
+ notifyDataSetChanged();
+ }
+
+ public void addData(List<DATA> list){
+ if (list != null && list.size() > 0) {
+ this.dataList.addAll(list);
+ }
+ notifyDataSetChanged();
+ }
+
+ public List<DATA> getData() {
+ return dataList;
}
@NonNull
@Override
- public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+ public ViewBindHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
if(viewType == 1 ){
- // get genericity "B"
- Class<B> entityClass = (Class<B>) ((ParameterizedType) this.getClass().getGenericSuperclass()).getActualTypeArguments()[0];
try {
- /* for(Method method: entityClass.getMethods()){
- StringBuilder sb = new StringBuilder();
- for(Class type : method.getParameterTypes()){
- sb.append(type.getSimpleName()+",");
- }
- Log.e(TAG,String.format("method:%s,return:%s,param:%s",method.getName(),method.getReturnType().getSimpleName(),sb.toString()));
- }*/
+ //实例化viewbind
+ Class<VB> entityClass = (Class<VB>) ((ParameterizedType) this.getClass().getGenericSuperclass()).getActualTypeArguments()[1];
Method method = entityClass.getMethod("inflate", LayoutInflater.class,ViewGroup.class,boolean.class);//get method from name "inflate";
- B vBind = (B) method.invoke(entityClass,LayoutInflater.from(parent.getContext()),parent,false);//execute method to create a objct of viewbind;
+ VB vBind = (VB) method.invoke(entityClass,LayoutInflater.from(parent.getContext()),parent,false);//execute method to create a objct of viewbind;
return new ViewBindHolder(vBind);
} catch (SecurityException e) {
e.printStackTrace();
@@ -80,19 +96,25 @@
e.printStackTrace();
}
}
- return new NullViewHolder( LayoutNullBinding.inflate(LayoutInflater.from(parent.getContext()),parent,false));
+ //加载空数据
+ return new ViewBindHolder( LayoutNullBinding.inflate( LayoutInflater.from(parent.getContext()), parent, false ) );
}
@Override
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
- //MyLog.i(TAG,"onBindViewHolder position:"+position+" "+mData.size()+" "+getItemViewType(position));
- if(activity == null){
- activity = (BaseActivity) holder.itemView.getContext();
- }
- if(getItemViewType(position)==0){
- bindView((NullViewHolder) holder);
- }else {
- bindView((ViewBindHolder) holder, mData.size() == 0 ? null : mData.get(position), position);
+ ViewBindHolder bindHolder = (ViewBindHolder) holder;
+ if(getItemViewType(position) == 0 || bindHolder.binding instanceof LayoutNullBinding){
+ onBindEmptyView((LayoutNullBinding) bindHolder.binding);
+ }else{
+ if (onItemClickListener != null) {
+ bindHolder.binding.getRoot().setOnClickListener(view -> {
+ if(onItemClickListener != null){
+ onItemClickListener.onItemClick(position,getItem(position));
+ }
+ });
+ }
+ onBindView((VB) bindHolder.binding, position, getItem(position));
+ setBottomMargin(bindHolder,position);
}
}
@@ -102,7 +124,7 @@
* @param position
*/
protected void setBottomMargin(ViewBindHolder holder, int position){
- setBottomMargin(holder,position,23);
+ setBottomMargin(holder,position,lastMarginBottom);
}
/**
@@ -111,56 +133,54 @@
* @param position 位置
* @param dp 间距
*/
- protected void setBottomMargin(RecyclerView.ViewHolder holder, int position,int dp){
- setBottomMargin(holder,position,dp,0);
+ protected void setBottomMargin(RecyclerView.ViewHolder holder, int position,float dp){
+ setBottomMargin(holder,position,dp,defaultMarginBottom);
}
- protected void setBottomMargin(RecyclerView.ViewHolder holder, int position, int dp, int defaultDp){
+
+ protected void setBottomMargin(RecyclerView.ViewHolder holder, int position, float dp, float defaultDp){
ViewGroup.MarginLayoutParams params1 = (ViewGroup.MarginLayoutParams) holder.itemView.getLayoutParams();
- if(position == mData.size() -1){
- params1.setMargins(params1.leftMargin, params1.topMargin, params1.rightMargin, DeviceUtil.convertDpToPixel(dp,holder.itemView.getContext()));
+ if(position == dataList.size() -1){
+ params1.setMargins(params1.leftMargin, params1.topMargin, params1.rightMargin, (int) DimensionUtils.convertDpToPixel(dp,holder.itemView.getContext()));
}else{
- params1.setMargins(params1.leftMargin, params1.topMargin, params1.rightMargin, DeviceUtil.convertDpToPixel(defaultDp,holder.itemView.getContext()));
+ params1.setMargins(params1.leftMargin, params1.topMargin, params1.rightMargin, (int) DimensionUtils.convertDpToPixel(defaultDp,holder.itemView.getContext()));
}
}
- protected abstract void bindView(ViewBindHolder holder,T data,int position);
- protected void bindView(NullViewHolder holder){
-
- }
-
+ /**
+ * 空数据支持
+ * @return
+ */
@Override
public int getItemCount() {
- //默认显示空视图，若不显示空视图则重写该方法，返回mData.size()
- return mData == null || mData.size() == 0 ?1:mData.size();
+ return (showNull && dataList.size() == 0 )? 1 : dataList.size();
}
-
+ /**
+ * 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））
+ * @param position
+ * @return
+ */
@Override
public int getItemViewType(int position) {
- //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））
- //MyLog.i(TAG,"getItemViewType position:"+position+" mdata:"+mData.size()+" "+(position ==0 && mData.size()==0));
- return position == 0 && mData.size()==0?0:1;
+ return (showNull && position == 0 && dataList.size() == 0)? 0 : 1;
}
- public class ViewBindHolder extends RecyclerView.ViewHolder{
- public B binding;
- public ViewBindHolder( B binding) {
- super(binding.getRoot());
- this.binding = binding;
+ public DATA getItem(int position){
+ if(position >= dataList.size()){
+ return null;
+ }else {
+ return dataList.get(position);
}
}
+
+ protected abstract void onBindView(VB binding, int position, DATA data);
+
/**
* 空数据显示
- * Created by Administrator on 2021/10/28 0028.
*/
- public class NullViewHolder extends RecyclerView.ViewHolder {
- LayoutNullBinding binding;
+ protected void onBindEmptyView(LayoutNullBinding emptyBinding){
+ Log.e("baseAdapter"," emptyBinding:"+emptyBinding);
- public NullViewHolder(LayoutNullBinding binding) {
- super(binding.getRoot());
- this.binding = binding;
- }
}
-
}
--
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