如何在Edittext中显示两个数据而不丢失其中一个？

int a = 10;
int b = 20;
String result = String.valueOf(a) + " " + String.valueOf(b);
editText.setText(result);

int a = 10;
int b = 20;
String result = String.valueOf(a) + "," + String.valueOf(b);
editText.setText(result);

String result = editText.getText().toString();
String[] data = result.split(",");
int a = Integer.parseInt(data[0]);
int b = Integer.parseInt(data[1]);

public class Data {
    private int a;
    private int b;

    public Data(int a, int b) {
        this.a = a;
        this.b = b;
    }

    @Override
    public String toString() {
        return "Data{" +
                "a=" + a +
                ", b=" + b +
                '}';
    }
}

Data data = new Data(10, 20);
editText.setText(data.toString());

String result = editText.getText().toString();
Data data = new Data(Integer.parseInt(result.substring(result.indexOf("a=") + 2, result.indexOf(","))),
                    Integer.parseInt(result.substring(result.indexOf("b=") + 2, result.indexOf("}"))));