主页 动态UI adapter null视图问题修改 分页框架 include问题

Administrator

2021-11-05 462d583986e4739f7a75227b3fde4da587502ba5

 app/src/main/java/com/duqing/missions/base/adapter/BaseAdapter.java

@@ -2,17 +2,13 @@

import android.graphics.drawable.Drawable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import androidx.annotation.LayoutRes;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import androidx.viewbinding.ViewBinding;

import com.duqing.missions.R;
import com.duqing.missions.base.activities.BaseActivity;
import com.duqing.missions.common.NullViewHolder;
import com.duqing.missions.databinding.LayoutNullBinding;
import com.duqing.missions.util.DeviceUtil;

@@ -26,14 +22,14 @@
 *  T  数据类型
 *  V 适配器视图
 */
public abstract class BaseAdapter<B extends ViewBinding,A extends BaseActivity,T> extends RecyclerView.Adapter {
public abstract class BaseAdapter<B extends ViewBinding,T> extends RecyclerView.Adapter {

    protected List<T> mData = new ArrayList<>();

    protected Drawable nullDrawable;
    protected String nullTxt="暂无数据";
    protected String TAG = "BaseAdapter";
    protected  A activity;
    protected BaseActivity activity;

    public BaseAdapter(){
    }
@@ -54,48 +50,38 @@
    @NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        // 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()));
            }*/
            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;
            return new ViewBindHolder(vBind);
        } catch (Exception e) {
            e.printStackTrace();
        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()));
                }*/
                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;
                return new ViewBindHolder(vBind);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return new NullViewHolder( LayoutNullBinding.inflate(LayoutInflater.from(parent.getContext())));
    }

    /**
     *
     * 创建视图
     * @param parent
     * @param layout  视图文件
     * @param viewType 视图类型   1 加载正常视图   其他则加载空数据
     * @return
     */
    protected View getRootView(@NonNull ViewGroup parent, @LayoutRes int layout,int viewType ){
        //MyLog.i(TAG,"getRootView viewType:"+viewType);
        return LayoutInflater.from(parent.getContext()).inflate(viewType==1?layout: R.layout.layout_null,parent,false);
        return new NullViewHolder( 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(getItemViewType(position)==0){
            return;
        if(activity == null){
            activity = (BaseActivity) holder.itemView.getContext();
        }
        try {
            activity = (A) holder.itemView.getContext();
        }catch (Exception e){}
        bindView((ViewBindHolder) holder,mData.size()==0?null:mData.get(position),position);
        if(getItemViewType(position)==0){
            bindView((NullViewHolder) holder);
        }else {
            bindView((ViewBindHolder) holder, mData.size() == 0 ? null : mData.get(position), position);
        }
    }

    /**
@@ -127,6 +113,10 @@
    protected abstract void bindView(ViewBindHolder holder,T data,int position);


    protected void bindView(NullViewHolder holder){

    }

    @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()
@@ -138,17 +128,27 @@
    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 position == 0 && mData.size()==0?0:1;
    }

    public class ViewBindHolder extends RecyclerView.ViewHolder{

        B binding;

        public B binding;
        public ViewBindHolder( B binding) {
            super(binding.getRoot());
            this.binding = binding;
        }
    }
    /**
     * 空数据显示
     * Created by Administrator on 2021/10/28 0028.
     */
    public class NullViewHolder extends RecyclerView.ViewHolder {
        LayoutNullBinding binding;

        public NullViewHolder(LayoutNullBinding binding) {
            super(binding.getRoot());
            this.binding = binding;
        }
    }

}