CODEWITHSUNDEEP
javaandroid
Sam YC
Sam YC

Reputation: 11617

How to use this two ArrayAdapter constructor

When I read the API doc, I found 2 weird constructor in ArrayAdapter class:

public ArrayAdapter (Context context, int textViewResourceId)

public ArrayAdapter (Context context, int resource, int textViewResourceId)

There is no List or Array to insert into this 2 public constructor (the rest has), then what are the purpose to have these 2 constructor? How to use them?

Upvotes: 1

Views: 120

Answers (2)

Aman J
Aman J

Reputation: 1855

These two constructors are for initialization of ArrayAdapter if you donnot have any Array to display at the time of object creation. Once you create/receive your array you can use

public void addAll (Collection<? extends T> collection)

to set an array to be displayed.

Upvotes: 1

kjurkovic
kjurkovic

Reputation: 4104

In this case you can use methods getItemViewType(int position) and getViewTypeCount() in your subclass of ArrayAdapter and List or Array of items should be a populated class field.

Upvotes: 0

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