CODEWITHSUNDEEP
androidandroid-activityandroid-context
sergi
sergi

Reputation: 979

How to use setContentView(int) from class which does not extend Activity

I need to call the setContentView(int) from my main Activity from another class which does not extends Activity.

In my custom class I've got the private Context context; var that is passed from the Activity in the Constructor but I can't figure out how to acces the Activity methods using the context variable.

Upvotes: 6

Views: 16364

Answers (3)

DeeV
DeeV

Reputation: 36035

You would have to pass in a reference to the Activity you're using.

Something like this

class ActivityA extends Activity{
   @Override
   public void onCreate(Bundle state){
      super.onCreate(state);
      ClassA myclass = new ClassA(this);
   }
}

And then Class A would have:

class ClassA {
   public ClassA(Activity yourActivity){
      ... Get your view here ....
      yourActivity.setContentView(view);
      ... do more things...
   }
}

Upvotes: 0

Konstantin Burov
Konstantin Burov

Reputation: 69228

If your context is an instance of Activity class, simple class cast should work:

Activity a = (Activity) context;
a.setContentView(R.layout.your_layout);

Upvotes: 13

Ashterothi
Ashterothi

Reputation: 3282

One solution (may not be the most elegant) is to pass the calling activity to the other class, not just the context.

Upvotes: 1

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