Java – Android random number

I generate a random card from the array And assign it. "

public void rand() {
    String rank[]=  {"tclub1.png","tclub2.png","tclub3.png","tclub4.png","tclub5.png","tclub6.png","tclub7.png","tclub8.png","tclub9.png","tclub10.png","tclub11.png","tclub12.png","tclub13.png"};

    Random randInt = new Random();

    int b = randInt.nextInt((rank.length));
    showcard1.setBackgroundResource(b); 
}

Solution

B is an int

Therefore, you need to rank the [b] array somewhere in the code

According to your code, you should probably read showcard1 Setbackgroundresource (rank Union [b]);