Question

Android studio java

how to add two radio buttons from different groups and display the result on a textview without using a button.

group A has values 4, 6
Group B has values 10,20

how can i make it so i can choose a button from group A and a button from group B,and the two options will generate a sum and show the result on a textview.

Answer 1

To add two radio buttons from different groups in Android Studio and display the sum of the selected values in a TextView without a button, create RadioGroups in the layout, implement OnCheckedChangeListener for selections, and display the sum in the TextView upon selection change.

Step-by-step explanation:

Adding Radio Buttons from Different Groups in Android Studio

To add two radio buttons from different groups and display the result in a TextView without using a button in Android Studio, you need to create two RadioGroup objects in your layout file. For Group A with values 4 and 6 and Group B with values 10 and 20, first, define the radio buttons within each RadioGroup. Then, create corresponding OnCheckedChangeListener for each group in your Activity or Fragment to listen for changes in the radio button selection.

Here's an example of how you can implement it:

1. 
   
3. Define the radio buttons within each group in the XML layout file.
4. 
   
6. In the Activity or Fragment, get references to the RadioGroups and the TextView.
7. 
   
9. Set an OnCheckedChangeListener on each RadioGroup.
10. 
    
12. Inside the listener, check which radio button is checked and retrieve the corresponding value.
13. 
    
15. Calculate the sum of the selected values from both groups.
16. 
    
18. Display the sum in the TextView.

Note that you'll need to initialize a variable to store the selected value from each group and update the TextView every time a new selection is made.