Android在TextViews中显示随机数

Question

我想生成1到9之间的随机数，并在一个不同的TextView（用于数独）

我有九个TextView。

private TextView textView1;
private TextView textView2;
private TextView textView3;
private TextView textView4;
private TextView textView5;
private TextView textView6;
private TextView textView7;
private TextView textView8;
private TextView textView9;

public void generateNumbers() {

    // Random numbers
    int numbers = 

    textView1.setText();
    textView2.setText();
    textView3.setText();
    textView4.setText();
    textView5.setText();
    textView6.setText();
    textView7.setText();
    textView8.setText();
    textView9.setText();
}

在某些正方形中，我需要显示3个数字，而在其他正方形中，我需要显示4个数字

Answer 1

 val numbers:MutableList<Int> = arrayListOf(1,2,3,4,5,6,7,8,9)
 numbers.shuffle()

Answer 2

在Java中使用随机类。

import java.util.Random;

// Obtain a number between [1 - 9].

Random rand = new Random(); 
int random = rand.nextInt(9); //This will give value from 0 to 8 
random += 1; //This will give value from 1 to 9
textView1.setText(random);

//You can continue like this

textView2.setText(rand.nextInt(9) + 1);
textView3.setText(rand.nextInt(9) + 1);
textView4.setText(rand.nextInt(9) + 1);
......