I have some toggle buttons that represent the days in the week.
When a user clicks on a ToggleButton i want it to switch states and change color, indicating to the user that it was been clicked.
This is what one of my ToggleButtons looks like:
<ToggleButton
    android:id="@+id/toggleButton_monday"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginStart="8dp"
    android:layout_marginLeft="8dp"
    android:layout_marginTop="16dp"
    android:background="@drawable/button_border"
    android:textOff="MON"
    android:textOn="MON"
    app:layout_constraintEnd_toStartOf="@+id/toggleButton_tuesday"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/textView10" />
I want the button to look like this after it's clicked (i want the same border and shape, but just different color and state changed):
The answer here doesn't work, as i already have an android:background for my toggle buttons to show the custom border around the button.
The answer here doesn't work, as i am using a ToggleButton and not a SwitchCompat
EDIT:
Here is the current android:background i am setting my ToggleButtons with:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" >
    <corners
        android:radius="10dp"
        />
    <solid
        android:color="#FFFFFF"
        />
    <padding
        android:left="0dp"
        android:top="0dp"
        android:right="0dp"
        android:bottom="0dp"
        />
    <size
        android:width="75dp"
        android:height="40dp"
        />
    <stroke
        android:width="3dp"
        android:color="#878787"
        />
</shape>
EDIT: SOLUTION
Thank you @Broken and @Moustafa Shahin, i used a combination of their answers.
First i created two resource files for my ToggleButtons toggle_button_default.xml and toggle_button_checked.xml (check code above in the first EDIT). Basically, the background colors are just different in the two XMLs.
Second, i created a seletor called toggle_button_state.xml, and loaded the appropriate resources files, that i created above:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- WHEN IS CHECKED -->
    <item android:drawable="@drawable/toggle_button_default" android:state_checked="false" />
    <!-- WHEN IS NOT CHECKED -->
    <item android:drawable="@drawable/toggle_button_checked" android:state_checked="true" />
</selector>
And lastly, for my ToggleButtons, i set the toggle_button_state as the background for them:
<ToggleButton
    android:id="@+id/toggleButton_monday"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginStart="8dp"
    android:layout_marginLeft="8dp"
    android:layout_marginTop="8dp"
    android:background="@drawable/toggle_button_state"
    android:textOff="MON"
    android:textOn="MON"/>
In the Activity, i have an onClick method, that i can use to monitor the clicks:
class RentActivity : AppCompatActivity(), View.OnClickListener {
    override fun onClick(v: View?) {
        when(v?.id){
            R.id.toggleButton_monday ->{
                Toast.makeText(this, "Monday Clicked", Toast.LENGTH_LONG).show()
                return
            }
     ...


 
     
     
    