（swift）为什么标签的高度是不可变的？

Question

我只为这些标签添加了宽高比约束，但它告诉我标签的高度是不可变的。

public static void main(String[] args) {
    Random ran = new Random(); // create instant object from class Random.
    int array[] =new int[100]; //set an array variable with array size of 100
    int maxNumber = 150; //set the limit of the random number to generate

    for (int i = 0; i < array.length; i++) { 
        array[i] = ran.nextInt(maxNumber) + 1; //+1 means that the array number should not contain with 0 value. 1-150.

    }

        do {   
             int choosenIndex = 0;
                String input = JOptionPane.showInputDialog(null, "Enter index"); //Get input from user

            try {  

                  Integer.parseInt(input); //change the string to int type.
                if(choosenIndex >= 0 || choosenIndex <= array.length)  
                    JOptionPane.showMessageDialog(null, "The value of choosen index in the array is : "
                    + array[choosenIndex]); //display the choosen index value.
                    System.exit(0);
            }catch (ArrayIndexOutOfBoundsException e){
                if (choosenIndex < 0 || choosenIndex > array.length) {
                    JOptionPane.showMessageDialog(null,
                    "Index is out of bound. Enter from 0-99"); //display error for indexoutbound.
                }
            }catch(NumberFormatException e){
                    JOptionPane.showMessageDialog(null, "Only integer allowed.");//display other error occured.
            }
        } while (true);
}