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Generic Class for Recyclerview Adapter
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import android.support.v7.widget.RecyclerView; | |
import android.view.LayoutInflater; | |
import android.view.View; | |
import android.view.ViewGroup; | |
import java.lang.reflect.Constructor; | |
import java.util.ArrayList; | |
public abstract class ListAdapter<T, VH extends RecyclerView.ViewHolder> extends RecyclerView.Adapter<VH> { | |
protected int mLayout; | |
Class<VH> mViewHolderClass; | |
Class<T> mModelClass; | |
ArrayList<T> mData; | |
public ListAdapter(int mLayout, Class<VH> mViewHolderClass, Class<T> mModelClass, ArrayList<T> mData) { | |
this.mLayout = mLayout; | |
this.mViewHolderClass = mViewHolderClass; | |
this.mModelClass = mModelClass; | |
this.mData = mData; | |
} | |
@Override public VH onCreateViewHolder(ViewGroup parent, int viewType) { | |
ViewGroup view = (ViewGroup) LayoutInflater.from(parent.getContext()).inflate(mLayout, parent, false); | |
try { | |
Constructor<VH> constructor = mViewHolderClass.getConstructor(View.class); | |
return constructor.newInstance(view); | |
} catch (Exception e){ | |
throw new RuntimeException(e); | |
} | |
} | |
@Override public void onBindViewHolder(VH holder, int position) { | |
T model = getItem(position); | |
bindView(holder, model, position); | |
} | |
@Override public int getItemCount() { | |
return mData.size(); | |
} | |
abstract protected void bindView(VH holder, T model, int position); | |
private T getItem(int position) { | |
return mData.get(position); | |
} | |
} |
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recyclerView.setLayoutManager(new LinearLayoutManager(this)); | |
adapter = new ListAdapter<String, ItemViewHolder>(R.layout.item_view_holder, ItemViewHolder.class, String.class, data) { | |
@Override protected void bindView(ItemViewHolder holder, String model, final int position) { | |
holder.bind(model); | |
holder.itemView.setOnClickListener(new View.OnClickListener() { | |
@Override public void onClick(View view) { | |
//clicked | |
} | |
}); | |
} | |
}; | |
recyclerView.setAdapter(adapter); |
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