如何从活动A中的EditText获取多个整数值以在活动B中的TextView中显示最小值和最大值？

Question

This is regarding to an app in android studio that i'm building. I have 2 activities.

In activity A, I have 4 EditTexts that can only contain integer. Min button:there is a button, that should calculate the minimum of those 4 numbers entered by user. Max button:there is a button, that should calculate the maximum of those 4 numbers entered by user.

In activity B, there are 6 TextView s (4 for numbers, 2 for Min and Max). When the Button in Activity A is pressed. It should pass the numbers from the EditText s in Activity A to the TextView s in Activity B. In addition to that, it should show the average of the 4 numbers in Results TextView .

I figured out the way how to pass the numbers to the TextView s in the second Activity . What I want is a code that calculates the min and max of the user inputs and shows the min and max result in the TextView in Activity B.

Answer 1

First, you will need to get the numbers from all of your Textview and set them in Integer List, After that, you can check the numbers using Collections

And the following is the example code for that:

 List<Integer> list = Arrays.asList(100,2,3,4,5,6,7,67,2,32);

 int min = Collections.min(list);
 int max = Collections.max(list);

 System.out.println(min);
 System.out.println(max);

Output:

2
100

Of course, you will have to set the output in Textview instead of System.out.println