How to reference the current or main activity from another class

Question

I often find myself needing to access methods that require referencing some activity. For example, to use getWindowManager, I need to access some Activity. But ofte

Answer 1

I found a way to get the Activity to a non-activity class that I have not seen discussed in forums. This was after numerous failed attempts at using getApplicationContext() and of passing the context in as a parameter to constructors, none of which gave Activity. I saw that my adapters were casting the incoming context to Activity so I made the same cast to my non-activity class constructors:

public class HandleDropdown extends Application{
...
    public Activity activity;
...
public HandleDropdown() {
    super();
}
public HandleDropdown(Activity context) {
    this.activity = context;
    this.context = context;
}
public void DropList(View v,Activity context) {
    this.activity = context;
    this.context = context; 
...
}

After doing this cast conversion of Context to Activity I could use this.activity wherever I needed an Activity context.