RecyclerView适配器基类的封装

RecyclerView.Adapter封装类

public abstract class AutoRollAdapter<T> extends RecyclerView.Adapter<ViewHolder> {protected List<T> ts = new ArrayList<>();public List<T> getData() {return ts;
}
public int size() {return null == ts ? 0 : ts.size();
}public void add(T t) {ts.add(t);notifyDataSetChanged();
}protected void remove(int index) {ts.remove(index);notifyDataSetChanged();
}public void addAll(List<T> ts) {this.ts.addAll(ts);notifyDataSetChanged();
}public void clear() {this.ts.clear();notifyDataSetChanged();
}@LayoutRes
public abstract int getLayoutResId();@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {return new ViewHolder(parent, getLayoutResId());
}@Override
public void onBindViewHolder(@NonNull ViewHolder holder, int position) {if (size() > 0) {onConvert(holder, getItem(position));// onConvert(holder, getItem(position), position);}
}protected abstract void onConvert(ViewHolder holder, T bean);//返回条目索引，根据自己需求设置返回参数
protected abstract void onConvert(ViewHolder holder, T bean, int position);public T getItem(int position) {return ts.get(position % size());
}
}

ViewHolder封装

public class ViewHolder extends RecyclerView.ViewHolder {
private SparseArray<View> viewArray;public ViewHolder(ViewGroup parent, @LayoutRes int resId) {super(LayoutInflater.from(parent.getContext()).inflate(resId, parent, false));viewArray = new SparseArray<>();
}public <T extends View> T findViewById(@IdRes int resId) {View view = viewArray.get(resId);if(view == null) {view = itemView.findViewById(resId);viewArray.put(resId, view);}return (T) view;
}public ViewHolder setText(@IdRes int resId, CharSequence text) {TextView tv = findViewById(resId);if(tv != null) {tv.setText(text);}return this;
}public ViewHolder setTextColor(@IdRes int resId, int color) {TextView tv = findViewById(resId);if(tv != null) {tv.setTextColor(color);}return this;
}
public ViewHolder setOnClickListener(int viewId, View.OnClickListener onClickListener) {View view = findViewById(viewId);view.setOnClickListener(onClickListener);return this;
}
}

ViewHolder进行了封装目前之封装了setText、setTextColor以及setOnClickListener，可以根据自己的需求进行添加

使用封装的基类

public class CallAdapter extends AutoRollAdapter<CallBean> {//设置布局-
@Override
public int getLayoutResId() {return R.layout.listview_item_call;
}//设置控件属性
@Override
protected void onConvert(ViewHolder holder, CallBean bean) {holder.setText(R.id.tv_window, bean.getWindowName()).setTextColor(R.id.tv_window, bean.getStateColor());
}
}