Unresolved Reference getResources() Kotlin

Question

So I am trying to access the getResources() in my code, but for some reason it keeps getting an unresolved reference. I am doing this in another class for my array adapter. Is it because I don't have a main method or is it because of other reasons? I am bit new to android dev and kotlin in general so any help would be appreciate it.

class ForecastAdapter(val forecast: Forecast) : RecyclerView.Adapter<ForecastData>(){
    override fun getItemCount(): Int {
        return forecast.list.count()

    }

    override fun onCreateViewHolder(p0: ViewGroup, p1: Int): ForecastData {
        val layoutInflator = LayoutInflater.from(p0?.context)
        val cellForRow = layoutInflator.inflate(R.layout.weather_row, p0, false)
        return ForecastData(cellForRow)

    }

    override fun onBindViewHolder(p0: ForecastData, p1: Int) {
        val drawableId: Int = getResources().getIdentifier("my_drawable", "drawable", getPackageName())
        val getWeather = forecast.list[p1]
        val clouds = getWeather.weather[0]
        val getDateTime = forecast.list[p1]
        var getIcon = forecast.list[p1]
        var icon = getIcon.weather[0]
        p0.view.textView_text_clouds.text = clouds.main
        p0.view.textView_date_time.text = getDateTime.dt_txt

    }

}

class ForecastData(val view: View): RecyclerView.ViewHolder(view){


}

Solution 1

Pass context as parameter in your adapter then use like this

 class ForecastAdapter(val forecast: Forecast,val context:Context)

then

 override fun onBindViewHolder(p0: ForecastData, p1: Int) {
    val drawableId: Int = context.getResources().getIdentifier("my_drawable", "drawable", getPackageName())

Solution 2

You don't need to pass it through the constructor. In the onCreateViewHolder you can take it from the parent.context

Comments

[Hanzala]

you need context here for correct reference like viewHolder.itemView.context.resources p0.itemView.context.resources in your case

[zapl]

[this.]getResources() is a method that exists when you extend a class that is a Context for example Activity or has a reference internally e.g. View. A RecyclerView.Adapter does not inherit this method so you'll need a reference to some external Context object. Either do what @sasikumar suggests and to require an explicit reference in the constructor or use the View objects you are given as method arguments like above comment suggests.

[Zubair Amjad]

Okay and then I would pass it in like this when calling the class? view.adapter = ForecastAdapter(weather, context) When I do pass it in like that it says unresolved reference

[zapl]

@ZubairAmjad view.adapter = ForecastAdapter(weather, this) when you do that in an Activity. Or view.adapter = ForecastAdapter(weather, activity!!) (getActivity()) if you're doing that from a Fragment

[Zubair Amjad]

When I do this though, it says it wants context, but I assume this would point to context?