如何使用FirebaseListAdapter获取键和值 [英] How to get Keys and Values using FirebaseListAdapter

问题描述

这个代码获取值并将它们设置在列表视图中我想获得键也使用它们，请参阅图像查看数据库示例

  FirebaseListAdapter firebaseListAdapter = new FirebaseListAdapter< String>（this，String.class，R.layout.users_list，usersUrl）{
 @Override 
 protected void populateView（View view，String base64Image， int（i）{
 //（（TextView）view.findViewById（android.R.id.text1））。setText（s）; 
 byte [] imageAsBytes = Base64.decode（base64Image.getBytes（），Base64.DEFAULT）; 
位图位图= BitmapFactory.decodeByteArray（imageAsBytes，0，imageAsBytes.length）; 
 
（（ImageView）view.findViewById（R.id.imageView1））。setImageBitmap（RoundedImageView.getCroppedBitmap（bitmap，100））; 
 
 
 
} 
}; 
  

DatabaseReference DatabaseReference code> getRef（position）：

  protected void populateView（View view，String base64Image，int position）{
 DatabaseReference itemRef = getRef（position）; 
字符串itemKey = itemRef.getKey（）; 
 ... 
  

this code get the values and set them in listview i want to get keys to use them also, please see the image to view the database example

FirebaseListAdapter firebaseListAdapter = new FirebaseListAdapter<String>(this, String.class, R.layout.users_list, usersUrl) {
        @Override
        protected void populateView(View view, String base64Image, int i) {
            //((TextView) view.findViewById(android.R.id.text1)).setText(s);
            byte[] imageAsBytes = Base64.decode(base64Image.getBytes(), Base64.DEFAULT);
            Bitmap bitmap =BitmapFactory.decodeByteArray(imageAsBytes, 0, imageAsBytes.length);

            ((ImageView)view.findViewById(R.id.imageView1)).setImageBitmap(RoundedImageView.getCroppedBitmap(bitmap,100));



        }
    };

database Image

解决方案

You can get the DatabaseReference for the current item by calling getRef(position):

protected void populateView(View view, String base64Image, int position) {
    DatabaseReference itemRef = getRef(position);
    String itemKey = itemRef.getKey();
    ...

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