具有DataBinding的RecyclerView通用适配器 [英] RecyclerView generic adapter with DataBinding

问题描述

我使用DataBinding为RecyclerView创建了通用适配器。这里是小代码片段

  public class RecyclerAdapter< T，VM extends ViewDataBinding>扩展RecyclerView.Adapter< RecyclerAdapter.RecyclerViewHolder> {
 private final Context context; 
 private ArrayList< T>项目; 
 private int layoutId; 
 private RecyclerCallback< VM，T> bindingInterface; 
 
 public RecyclerAdapter（Context context，ArrayList< T> items，int layoutId，RecyclerCallback< VM，T> bindingInterface）{
 this.items = items; 
 this.context = context; 
 this.layoutId = layoutId; 
 this.bindingInterface = bindingInterface; 
} 
 
公共类RecyclerViewHolder扩展了RecyclerView.ViewHolder {
 
虚拟机绑定; 
 
 public RecyclerViewHolder（View view）{
 super（view）; 
 binding = DataBindingUtil.bind（view）; 
} 
 
 public void bindData（T model）{
 bindingInterface.bindData（binding，model）; 
 
 $ b} 
 
 @Override 
 public RecyclerViewHolder onCreateViewHolder（ViewGroup parent，
 int viewType）{
 View v = LayoutInflater.from（parent.getContext（））
 .inflate（layoutId，parent，false）; 
返回新的RecyclerViewHolder（v）; 
 
 $ b @Override 
 public void onBindViewHolder（RecyclerAdapter.RecyclerViewHolder holder，int position）{
 T item = items.get（position）; 
 holder.bindData（item）; 
} 
 
 @Override 
 public int getItemCount（）{
 if（items == null）{
 return 0; 
} 
 return items.size（）; 
 
 
 $ / code $ / pre 
 
 
你可以在Github repo中找到完整的代码： Recyclerview-Generic-Adapter  
 
 
 
 我面临的问题是在使用通用适配器 RecyclerView 加载时间增加之后，它显示了设计时间布局并加载了原始数据。 / p> 
 
解决方案
您缺少的部分是 binding.executePendingBindings（）在 bindData ：
  public void bindData（T model）{
 bindingInterface.bindData（binding，model）; 
 binding.executePendingBindings（）; 
} 
  
 
I have created generic adapter for RecyclerView by using DataBinding. Here is small code snippet
public class RecyclerAdapter<T, VM extends ViewDataBinding> extends RecyclerView.Adapter<RecyclerAdapter.RecyclerViewHolder> {
private final Context context;
private ArrayList<T> items;
private int layoutId;
private RecyclerCallback<VM, T> bindingInterface;

public RecyclerAdapter(Context context, ArrayList<T> items, int layoutId, RecyclerCallback<VM, T> bindingInterface) {
    this.items = items;
    this.context = context;
    this.layoutId = layoutId;
    this.bindingInterface = bindingInterface;
}

public class RecyclerViewHolder extends RecyclerView.ViewHolder {

    VM binding;

    public RecyclerViewHolder(View view) {
        super(view);
        binding = DataBindingUtil.bind(view);
    }

    public void bindData(T model) {
        bindingInterface.bindData(binding, model);
    }

}

@Override
public RecyclerViewHolder onCreateViewHolder(ViewGroup parent,
                                             int viewType) {
    View v = LayoutInflater.from(parent.getContext())
            .inflate(layoutId, parent, false);
    return new RecyclerViewHolder(v);
}

@Override
public void onBindViewHolder(RecyclerAdapter.RecyclerViewHolder holder, int position) {
    T item = items.get(position);
    holder.bindData(item);
}

@Override
public int getItemCount() {
    if (items == null) {
        return 0;
    }
    return items.size();
}
}
You can find full code in Github repo : Recyclerview-Generic-Adapter


The problem i am facing is after using generic adapter RecyclerView loading time increase and for a second it shows design time layout and than loads original data.
解决方案
The piece you're missing is the binding.executePendingBindings() in bindData:
public void bindData(T model) {
    bindingInterface.bindData(binding, model);
    binding.executePendingBindings();
}


                        
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