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Android Android Lists and Adapters (2015) Standard ListViews Using a Default Adapter

Jeffrey Kwok
Jeffrey Kwok
3,006 Points
Posted by Jeffrey Kwok
Jeffrey Kwok
3,006 Points

can someone please elaborate on why we need to add "this" inside the ArrayAdapter parameter.

I'm referring to the line below: ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, daysOfTheWeek);

how does "this" refer to the daysoftheweek string array?

1 Answer

Ben Deitch
STAFF
Ben Deitch
Treehouse Teacher
Ben Deitch
Ben Deitch
Treehouse Teacher

It doesn't. "this" refers to the DailyForecastActivity. The first parameter of the ArrayAdapter constructor is a Context. We pass in the Activity, because an Activity IS a Context (i.e. Activity extends from Context).

Hope that helps!