获取Firebase数据并使用Android Studio放入阵列

Question

如何获取firebase的数据并将所有数据放入String数组中？ 这是我在不调用数据库的情况下编写的代码。但事实上，如果任何用户将任何新手机添加到数据库中，我想调用firebase数据并将其放入内部。任何人都可以帮我解决这个问题吗？谢谢..

package com.example.user8.appp3;

import android.content.Context;
import android.provider.ContactsContract;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

public class CustomAdapter extends BaseAdapter{

Context c;

//I wish to put all firebase's data into these array
String[] names = {"Samsung","Huawei","XIaomi","Apple","Oppo","Vivo"};
String[] price = {"100","200","300","400","500","600"};
int[] images = {R.drawable.samsung,R.drawable.huawei,R.drawable.xiaomi,R.drawable.apple,R.drawable.oppo,R.drawable.vivo};

public CustomAdapter (Context ctx)
{
    this.c = ctx;
}

@Override
public int getCount() {
    return names.length;
}

@Override
public Object getItem(int position) {
    return names[position];
}

@Override
public long getItemId(int position) {
    return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {

    if (convertView==null)
    {
        LayoutInflater inflater = (LayoutInflater)c.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        convertView=inflater.inflate(R.layout.mobile,null);
    }

    TextView nametxt = (TextView)convertView.findViewById(R.id.name);
    TextView pricetxt = (TextView)convertView.findViewById(R.id.price);
    ImageView img = (ImageView)convertView.findViewById(R.id.imgmobile);

    nametxt.setText(names[position]);
    pricetxt.setText(price[position]);
    img.setImageResource(images[position]);

    return convertView;
}
}