Android基础—— 自定义RecyclerView内部控件的监听器 _Android基础

书史足自悦，安用勤与劬。这篇文章主要讲述Android基础—— 自定义RecyclerView内部控件的监听器相关的知识，希望能为你提供帮助。
RecyclerView内部控件的监听器要写在对应的Adapter中
1.在Adapter里写好要用的回调接口

public interface OnItemClickListener1{ // 进入商品详情监听 public void onItemClick(int pos); } public interface OnItemClickListener2{ // 添加到购物车监听 public void onItemClick(int pos); } OnItemClickListener1 onItemClickListener1; public void setOnItemClickListener1(OnItemClickListener1 onItemClickListener1) { this.onItemClickListener1 = onItemClickListener1; } OnItemClickListener2 onItemClickListener2; public void setOnItemClickListener2(OnItemClickListener2 onItemClickListener2) { this.onItemClickListener2 = onItemClickListener2; }

2.在构造ViewHolder时给对应的控件注册OnClick监听，在OnClick里面调用上面写好的接口

public ViewHolder(View view){ super(view); cardView = (CardView)view; coffeeImage = (ImageView)view.findViewById(R.id.coffee_image); coffeeName = (TextView)view.findViewById(R.id.coffee_name); coffeePrice = (TextView)view.findViewById(R.id.coffee_price); addToCart = view.findViewById(R.id.add_to_cart); // 设置点击监听事件 coffeeImage.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if(onItemClickListener1!=null) onItemClickListener1.onItemClick(getAdapterPosition()); } }); addToCart.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if(onItemClickListener2!=null) onItemClickListener2.onItemClick(getAdapterPosition()); } }); }

3.外界调用时，就可以选择是否给这些控件注册我们自己定义的监听器，只要调用Adapter对象的setOnItemClickListener方法注册就行
例子为Adapter的构造函数里set，在其他地方同理

public CoffeeAdapter(List< Coffee> list,Context context){ mCoffeeList = list; mContext = context; setOnItemClickListener1(new OnItemClickListener1() { @Override //点击图片 public void onItemClick(int pos) { Coffee coffee = list.get(pos); Intent intent = new Intent(mContext, CoffeeInfoActivity.class); Bundle bundle = new Bundle(); bundle.putSerializable("coffee",coffee); intent.putExtras(bundle); mContext.startActivity(intent); } }); setOnItemClickListener2(new OnItemClickListener2() { @Override //点击按钮添加到购物车 public void onItemClick(int pos) { CartStorage.getInstance().addData(list.get(pos)); QBadgeView qBadgeView = ((MainActivity)mContext).getqBadgeView(); Log.d(TAG, "onItemClick: "+qBadgeView.getBadgeNumber()); Toast.makeText(mContext, "添加成功", Toast.LENGTH_SHORT).show(); } }); }

【Android基础—— 自定义RecyclerView内部控件的监听器】