CODEWITHSUNDEEP
androidtextviewandroid-view
dkniffin
dkniffin

Reputation: 1383

updating a TextView from another concurrent View

So this one is probably very simple, but I'm having a bit of trouble figuring it out.

So I have a custom View, which is now running in an activity along with a standard TextView widget.

What I want to know is whether there is a way to update the TextView from my custom View class

Upvotes: 1

Views: 85

Answers (1)

Seva Alekseyev
Seva Alekseyev

Reputation: 61396

Define a listener interface in the custom view. Define a setXxxListener() method in the view. Override the listener in the activity class. From the custom view, call the listener when needed. In the activity's listener implementation, update the TextView.

Such is the Java way.

In general, view classes should not make assumptions about other views running along. The object that manages both views - in your case the activity - should coordinate the data exchange between them.

Upvotes: 4

Related Questions