View must have a tag error in android data binding

Question

I\'ve two layouts for a screen. Activity works fine while setting a layout for Mobile device but it\'s causing error while setting layout for tablet device. The main issue is:

Answer 1

I was having this problem when using an array adapter, having a crash due to a missing tag on convertView. In my getView(), I was doing:

override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
    if (convertView == null) {
        DataBindingUtil.inflate(
            LayoutInflater.from(parent.context),
            R.layout.item_spinner_drop_down_work_package_filter,
            parent,
            false
        )
    } else {
        binding = ItemSpinnerDropDownWorkPackageFilterBinding.bind(convertView) 
        binding.text1.setText(getItem(position))
        setDividerVisibility(binding.divider, position)
        return convertView
    }    

}

Which was crashing. The solution was to set the tag on the first run through getView:

 override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
    val binding = if (convertView == null) {
        DataBindingUtil.inflate(
            LayoutInflater.from(parent.context),
            R.layout.item_spinner_drop_down_work_package_filter,
            parent,
            false
        )
    } else {
        convertView.tag as ItemSpinnerDropDownWorkPackageFilterBinding
    }
    binding.text1.setText(getItem(position))
    setDividerVisibility(binding.divider, position)
    binding.root.tag = binding
    return binding.root

}