RecyclerView的长按删除

先在适配器里面写一个接口回调


     //接口
    	public interface onLongClickLisenter
    	{
    	    void onLongClickLisenter(int position);
    	}
    	//声明接口
    	private onLongClickLisenter onLongClickLisenter;
    	
    	public void setOnLongClickLisenter(MyAdapter.onLongClickLisenter onLongClickLisenter) {
    	    this.onLongClickLisenter = onLongClickLisenter;
    	}

1. 然后在RecyclerView适配器 这个 onCreateViewHolder里面写长按删除

    //长按删除
   view.setOnLongClickListener(new View.OnLongClickListener() {
       @Override
       public boolean onLongClick(View v) {
           int layoutPosition = myViewHolder.getLayoutPosition();
           if (onLongClickLisenter!=null)
           {
               onLongClickLisenter.onLongClickLisenter(layoutPosition);
           }
           return true;
       }
   });
   

2. 然后在RecyclerView适配器 这个方法的getItemCount()下面 定义一个方法

   public void removeItem(int position)
   {
       //操作数据源
       results.remove(position);
       //刷新
       notifyDataSetChanged();
   }
   

4.然后你在哪个Activity或者是fragment里面调用的适配器里面调用接口回传过来的长按删除

adapter.setOnLongClickLisenter(new MyAdapter.onLongClickLisenter() {
    @Override
    public void onLongClickLisenter(int position) {
         Toast.makeText(getActivity(),"删除成功",Toast.LENGTH_SHORT).show();
         //删除数据
        adapter.removeItem(position);
    }
});