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当我需要应用查询时,我遇到了firebase的问题。firebase indexin方法?错误在android
给我这样
错误信息使用未指定的指数。考虑加入“‘.indexOn’:‘用户名’”在书籍到您的安全和火力地堡数据库规则获得更好的性能
这是我的代码:
DatabaseReference databaseReference = FirebaseDatabase.getInstance().getReferenceFromUrl("****/books");
Query query = databaseReference.orderByChild("username").equalTo(true);
final FirebaseListAdapter<Books> firebaseListAdapter = new FirebaseListAdapter<Books>(this,Books.class,android.R.layout.two_line_list_item,query) {
@Override
protected void populateView(View v, Books model, int position) {
TextView textView1 = (TextView) v.findViewById(android.R.id.text1);
TextView textView2 = (TextView) v.findViewById(android.R.id.text2);
Typeface Myfont = Typeface.createFromAsset(getAssets(), "font/gernralfont.ttf");
textView1.setTypeface(Myfont);
textView2.setTypeface(Myfont);
textView2.setTextSize(17);
textView2.setTextColor(Color.parseColor("#6eaafc"));
textView1.setTextColor(Color.parseColor("#4d70a0"));
textView1.setText("\n" + model.getUsername() +"\n");
textView2.setText("-"+model.getBookhave()+ "\n");
}
};
hilist.setAdapter(firebaseListAdapter);
我看了网上谈一些帖子'索引'与Firebase规则? 我不明白是什么意思?请帮我保存我的日子
谢谢..现在工作100% –