Custom number picker which can display : 0 1 0?

Question

With the default android Number Picker, when there is only 0 and 1 inside it, the UI doesn't react properly (freeze or glitch). Is there a possibility to extends from Number Picker to have as displayed Values [0,1,0] ?Thanks!!

Answer 1

I think you can do it using a compound view. I found this very helpful https://code.tutsplus.com/tutorials/creating-compound-views-on-android--cms-22889

Answer 2

You can create custom value using NumberPicker. You can use something like this:

Layout:

    <android.widget.NumberPicker
        android:id="@+id/custom_np"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

Logic:

NumberPicker numberPicker = view.findViewById(R.id.custom_np);
...
// Define the text to be displayed in NumberPicker
String[] texts = {"0", "1"};
numberPicker.setMinValue(0);
numberPicker.setMaxValue(texts.length - 1);
numberPicker.setDisplayedValues(texts);
numberPicker.setWrapSelectorWheel(true);