Spinner already Selected Item Selection event

Scenario:
I am using Spinner for date range selection, which is working perfectly. The issue is, there is an option "Custom Range" on which I have to open a custom date range picker. Although it is working fine for the first time.

The issue is:
When users click it again, it doesn't call onItemSelected(parent: AdapterView<*>?, view: View?, position: Int, id: Long) (which is a functionality of Spinner). But from the user point of view, it's a bug.

Is there any way, we can get any selection event on an already selected item of Spinner?

To call an event on the already selected item in Spinner You can do it in this way:

1. Create Your own Spinner class by extending AppCompatSpinner:

import android.content.Context
import android.util.AttributeSet
import android.util.Log

class MySpinner(context: Context, attrs: AttributeSet?) : androidx.appcompat.widget.AppCompatSpinner(
    context,
    attrs
)
{
    var listener: OnItemSelectedListener? = null

    override fun setSelection(position: Int)
    {
        super.setSelection(position)
        if (position == selectedItemPosition)
        {
            listener!!.onItemSelected(this, selectedView, position, selectedItemId)
        }
    }

    override fun setOnItemSelectedListener(listener: OnItemSelectedListener?)
    {
        this.listener = listener
    }
}

2. Use it in Your layout:

<com.yourcompany.kotlintest.MySpinner
    android:id="@+id/spinner"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    />

3. When creating a layout do this:

class MainActivity : AppCompatActivity()
{
    override fun onCreate(savedInstanceState: Bundle?)
    {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val spinner = findViewById<MySpinner>(R.id.spinner)

        spinner.adapter = ArrayAdapter(
            this,
            android.R.layout.simple_spinner_dropdown_item,
            arrayListOf("One", "Two", "Three")
        )

        spinner.onItemSelectedListener = object :
                AdapterView.OnItemSelectedListener
        {
            override fun onItemSelected(
                parent: AdapterView<*>,
                view: View, position: Int, id: Long
            )
            {
                Log.d("MyTag", "Click item at pos $position")
            }

            override fun onNothingSelected(parent: AdapterView<*>)
            {
                Log.d("MyTag", "Nothing selected")
            }
        }
    }
}

Now when You reselect the same item function will be executed

did you use

spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
    @Override
    public void onItemSelected(AdapterView<?> parentView, View selectedItemView, int position, long id) {
        // your code here with selected **item position**
    }

    @Override
    public void onNothingSelected(AdapterView<?> parentView) {
        // your code here
    }

});