[]
firebase.database.DatabaseException: Failed to convert value of type java.lang.Long to String
我尝试将此数据添加到 FirebaserecyclerAdapter 并收到此错误
这是数据库参考
databaseReference = FirebaseDatabase.getInstance().getReference().child("questions");
这就是我使用 RecyclerViewAdapter 的方式
FirebaseRecyclerAdapter<History, HistoryViewHolder> firebaseRecyclerAdapter = new FirebaseRecyclerAdapter<History, HistoryViewHolder>(
History.class, R.layout.history_list_item, HistoryViewHolder.class, databaseReference) {
@Override
protected void populateViewHolder(HistoryViewHolder viewHolder, History model, int position) {
viewHolder.setMyanswer(model.getMyAnswer());
viewHolder.setCorrentAnswer(model.getCorrectAnswer());
viewHolder.setImageUrl(getApplicationContext(), model.getImageUrl());
}
};
recyclerView.setAdapter(firebaseRecyclerAdapter);
数据库中的两个节点确实数据类型不匹配:
myAnswer : "21"
myAnswer : 11
如果您希望这是一个字符串,则应该是:
myAnswer : "21"
myAnswer : "11"
或者,只要它们足够长:
myAnswer : 21
myAnswer : 11
确保添加数据时注意一致性
valueX = 21.4;
valueY = 23.5;
需要将Long改为String
String mValuex = String.valueOf(valueX);
String mValuey = String.valueOf(valueY);
myRef.child(username).child("valuex").setValue(mValuex);
myRef.child(username).child("valuey").setValue(mValuey);