如何在同一个 TextView 中设置字符串和双精度值？

Question

I've been trying to put a double and a string in a textView on android studio, but everytime I try it ends up adding the string to the double like an adition, i tried putting comas instead of "+" but it marked error, maybe the answer it's pretty obvious but I haven found it till the momment this is what I have

Answer 1

Concatenate before you set the text:

String text = altura2 + AlturaPLUS;
textView.setText(text);

Answer 2

The + operator adds two operands if both of them are numbers. It performs the concatenation only if at least one of them is String .

For example.

double a = 1.5;
double b = 2.5;

Now to to concatenate the above two numbers, you should use:

String result = ""+a+b;
//or String result = String.valueOf(a) + b;
textView.setText(result);

If you use textView.setText(""+a+b) you will get a warning related to localization. But your code will run fine.