如何在Firebase RecyclerView中点击某个项目时打开新的活动 [英] How to open a new activity when an item is clicked in Firebase RecyclerView

问题描述

我已经使用Firebase UI中的FirebaseRecyclerView显示数据列表。现在，当我单击其中一个项目时，根据数据库中项目的ID，我想要打开DetailActivity。如何在 populateViewHolder 中获取Firebase生成的 ID（例如：-KRAVjAhr6A_spgJZEET）。

  Query queryRef = mDatabase.child（user-tickets）。child（userId）; 
 FirebaseRecyclerAdapter< Ticket，TicketViewHolder> （
 Ticket.class，
 TicketViewHolder.class，
 queryRef 
）{
 @Override 
保护无效populateViewHolder（TicketViewHolder viewHolder，Ticket模型，int位置）{
 //想获得这里记录的这个记录
} 
}; 
  

解决方案我已经为每个项目实施了一个TouchListener点击， onClick回调，根据位置，你可以得到如下所示的键：

  mRecyclerView.addOnItemTouchListener（new RecyclerTouchListener（this， mRecyclerView，new RecyclerClickListener（）{
 @Override 
 public void onClick（View view，int position）{
 String key = adapter.getRef（position）.getKey（）; 
 } 
 
 @Override 
 public void onLongClick（View view，int position）{
 
 
}））; 
  

贷：

I have used FirebaseRecyclerView from Firebase UI to show a list of data. Now when I click on one of the items, depending on the ID of the item in database, I want to open DetailActivity. How can I get Firebase generated ID(eg: -KRAVjAhr6A_spgJZEET) in populateViewHolder.

Query queryRef = mDatabase.child("user-tickets").child(userId);
FirebaseRecyclerAdapter<Ticket, TicketViewHolder> adapter = new FirebaseRecyclerAdapter<Ticket, TicketViewHolder>(
            Ticket.class,
            R.layout.item_ticket,
            TicketViewHolder.class,
            queryRef
    ) {
        @Override
        protected void populateViewHolder(TicketViewHolder viewHolder, Ticket model, int position) {
            //want to get Id here for this record
        }
    };

解决方案

I have implemented one TouchListener for each Item click, in the onClick callback, depending on the position, you can get the key as shown:

mRecyclerView.addOnItemTouchListener(new RecyclerTouchListener(this, mRecyclerView, new RecyclerClickListener() {
        @Override
        public void onClick(View view, int position) {
            String key = adapter.getRef(position).getKey();
        }

        @Override
        public void onLongClick(View view, int position) {

        }
    }));

Credit: How to get obj key from FirebaseListAdapter on Item Click. FirebaseUI

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