I have a class that is currently extending Activity and I have methods like findViewById, ArrayAdapter etc. I want to turn it into an independent class but all the above methods become undefined. What is the problem? Shouldn't importing the classes be enough? For eg, I import android.view.View for findViewById but it still makes no difference. Please advise.
you should pass the instance of your Activity to your Second Class on the constructor like this :
In your Activity
Instanciate your Class like this :
MyClass instance = new MyClass(this);
And in your second Class , the constructor will be like this :
public class MyClass {
public Activity activity;
//.... other attributes
public MyClass( Activity _activity){
this.activity = _activity;
//other initializations...
}
}
and then when you want to use the findViewById()
method , you can do like this :
EditText txt = (EditText)this.activity.findViewById(R.id.txt);