Call a public method in the Activity class from another class?

Question

MAIN ACTIVITY

    public class MyActivity() extends Activity
    {
        onCreate()
        {
            MyClass myobj=new MyClass();    
        }
               


        

Answer 1

In MainActivity.class file You have to pass MainActivity context from MainActivity Class. Then in MyClass you have to Get MainActivity context. Remember Context and MyActivity are two different reference.

public class MyActivity extends Activity
{
    onCreate(){
        MyClass myobj=new MyClass(MyActivity context);    
    }
    public void Mymethod(){}
}

//HELPER CLASS IN A SEPARATE FILE

public class MyClass()
{
    MyActivity context;
    MyClass(MyActivity context)
    {
      this.context = context;

      this.context.Mymethod();
      //Or you can directly use activity context
      context.Mymethod();
    }
}