Parent Does Not Contain A Constructor That Takes 0 Arguments

My code is namespace classlibrary { public class numerictext : EditText { //My code } When I try to inherit a edit text control in a class library, I'm gettin

Solution 1:

For any Android-based View subclass, you need to supply the three constructors that call their base object constructors, ie.:

public class MyView : EditText
{
    public MyView(Context context) : base(context) { }
    public MyView(Context context, IAttributeSet attrs) : base(context, attrs) { }
    public MyView(Context context, IAttributeSet attrs, int defStyle) : base(context, attrs, defStyle) { }

    // your override code....
}

Solution 2:

You need to call one of the base constructors in your derived class. Assuming you are using the Android EditText widget:

public class numerictext : EditText
{
    public numerictext(Context context) : base(context)
                                      //^^^^^^^^^^^^^^^ 
                                      //Note how we are now calling the base constructure
    {
        //empty or you can add your own code
    }

    public numerictext(Context context, IAttributeSet attrs) : base(context, attrs)
    {
    }

    //etc
} 

Solution 3:

Have you considered changing EditText to:

public class EditTtext 
{
   data stuff..
   EditText() {}

   other functions
}

Though I don't see why yours wouldn't work as is