在 android Studio 中显示随机数据

问：

我正在尝试创建一个应用程序，其中数据从网站中提取，然后显示给用户进行交互。我已经成功地从网站上提取了数据，但我仍然是 android studio 的新手，并且在显示我想要的内容时遇到了问题。如果有人知道我做错了什么，可以提供帮助，那就太棒了。我正在使用 java。

package com.example.boardswipe;

import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.constraintlayout.widget.ConstraintLayout;

import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;

import org.w3c.dom.Text;

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

    FirebaseAuth auth;
    Button button;   //logout button

    Button save_tab_btn;
    FirebaseUser user;
    @Override
    protected void onCreate(Bundle savedInstanceState) {     //All of the Activity.java files come with this, just ignore it
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        auth = FirebaseAuth.getInstance();
        button = findViewById(R.id.logout);
        user = auth.getCurrentUser();   //get the user
        if(user == null){
            Intent intent = new Intent(getApplicationContext(), Login.class);  //logout and go to login page if null
            startActivity(intent);              //start login activity page
            finish();                           //finish current activity
        }

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                FirebaseAuth.getInstance().signOut();      //sign out user from firebase
                Intent intent = new Intent(getApplicationContext(), Login.class);  //logout and go to login page
                startActivity(intent);              //start login activity page
                finish();                           //finish current activity
            }
        });

        //code for if the save tab button is clicked --> go to that page
        save_tab_btn = findViewById(R.id.Saves_Tab);
        save_tab_btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent savebtn = new Intent(getApplicationContext(), SavesTab.class);
                startActivity(savebtn);
                finish();
            }
        });

        // Create and add profile views to the container
        int hundredThousand = (int) (Math.random() * 10);
        int countHThou = 0;
        int tenThousand = (int) (Math.random() * 10);
        int countTenThou = 0;
        int thousand = (int) (Math.random() * 10);
        int countThou = 0;
        int hundred = (int) (Math.random() * 10);
        int countHun = 0;
        int ten = (int) (Math.random() * 10);
        int countTen = 0;
        int one = (int) (Math.random() * 10);
        int countOne = 0;


        ArrayList<Profile> profiles = new ArrayList<>();

        while (countHThou != 11) {
            while (countTenThou != 11) {
                while (countThou != 11) {
                    while (countHun != 11) {
                        while (countTen != 11) {
                            while (countOne != 11) {
                                try{
                                    Profile profile = new Profile(one, ten, hundred, thousand, tenThousand, hundredThousand);
                                    profiles.add(profile);
                                } catch (Exception e) {
                                    System.console();
                                }
                                one++;
                                if (one == 10) {
                                    one = 0;
                                }
                                countOne++;
                            }
                            countTen++;
                            ten++;
                            if (ten == 10) {
                                ten = 0;
                            }
                            countOne = 0;
                            one = (int) (Math.random() * 10);
                        }
                        countHun++;
                        hundred++;
                        if (hundred == 10) {
                            hundred = 0;
                        }
                        countTen = 0;
                        ten = (int) (Math.random() * 10);
                    }
                    countThou++;
                    thousand++;
                    if (thousand == 10) {
                        thousand = 0;
                    }
                    countHun = 0;
                    hundred = (int) (Math.random() * 10);
                }
                countTenThou++;
                tenThousand++;
                if (tenThousand == 10) {
                    tenThousand = 0;
                }
                countThou = 0;
                thousand = (int) (Math.random() * 10);
            }
            countHThou++;
            hundredThousand++;
            if (hundredThousand == 10) {
                hundredThousand = 0;
            }
            countTenThou = 0;
            tenThousand = (int) (Math.random() * 10);
        }

        ConstraintLayout layout = findViewById(R.id.layout);

        TextView description = findViewById(R.id.textView);
        ImageView gameImage = findViewById(R.id.imageView);
        TextView players = findViewById(R.id.textView3);
        TextView playTime = findViewById(R.id.textView4);

        for(Profile profile : profiles){
            gameImage.setImageBitmap(getBitmapFromURL(profile.getImageURL()));

            description.setText(profile.getDescriptionText());

            String minMaxPlayers = "Players: " + profile.getMinPlayersValue() + " - " + profile.getMaxPlayersValue();
            players.setText(minMaxPlayers);

            String minMaxPlayTime = "Time: " + profile.getMinPlaytimeValue() + " - " + profile.getMaxPlaytimeValue();
            playTime.setText(minMaxPlayTime);

            layout.addView(gameImage);
            layout.addView(description);
            layout.addView(players);
            layout.addView(playTime);
        }
    }

    @Nullable
    public static Bitmap getBitmapFromURL(String src) {
        try {
            Log.e("src",src);
            URL url = new URL(src);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setDoInput(true);
            connection.connect();
            InputStream input = connection.getInputStream();
            Bitmap myBitmap = BitmapFactory.decodeStream(input);
            Log.e("Bitmap","returned");
            return myBitmap;
        } catch (IOException e) {
            e.printStackTrace();
            Log.e("Exception",e.getMessage());
            return null;
        }
    }
} 

下面是 xml：

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    android:id="@+id/layout"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:layout_marginBottom="681dp"
        android:text="@string/boardswipe"
        android:textColor="#1C37D1"
        android:textSize="25sp"
        android:textStyle="bold"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <Button
        android:id="@+id/logout"
        android:layout_width="75dp"
        android:layout_height="62dp"
        android:layout_marginTop="4dp"
        android:layout_marginEnd="4dp"
        android:backgroundTint="#FA4810"
        android:text="@string/logout"
        android:textSize="8sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent" />


    <Button
        android:id="@+id/Saves_Tab"
        android:layout_width="160dp"
        android:layout_height="50dp"
        android:layout_marginEnd="16dp"
        android:layout_marginBottom="8dp"
        android:backgroundTint="#5FDDD2"
        android:text="Saves"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent" />

    <Button
        android:id="@+id/BG_Tab"
        android:layout_width="160dp"
        android:layout_height="50dp"
        android:layout_marginStart="16dp"
        android:layout_marginBottom="8dp"
        android:backgroundTint="#E91E63"
        android:text="BoardGames"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

    <!-- This is a comment, everything below is hardcoded and not from database (TEMPORARY) -->

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="289dp"
        android:layout_height="210dp"
        android:layout_marginTop="40dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView2"
        app:srcCompat="@drawable/arnak" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="305dp"
        android:layout_height="289dp"
        android:text=""
        android:textColor="#000000"
        android:textSize="15sp"
        android:textStyle="bold"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.44"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/imageView"
        app:layout_constraintVertical_bias="0.447" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="127dp"
        android:layout_height="34dp"
        android:layout_marginStart="54dp"
        android:layout_marginTop="314dp"
        android:layout_marginEnd="230dp"
        android:layout_marginBottom="383dp"
        android:text=""
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/textView4"
        android:layout_width="128dp"
        android:layout_height="33dp"
        android:layout_marginStart="208dp"
        android:layout_marginTop="315dp"
        android:layout_marginEnd="75dp"
        android:layout_marginBottom="383dp"
        android:text=""
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />


</androidx.constraintlayout.widget.ConstraintLayout>

我试过弄乱布局的东西，弄乱xml文件和各种不同的布局。这些都没有奏效，也没有显示我想要的东西。