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Android Build a Simple Android App (2014) Improving Our Code Creating a Class

Prasad Kothe
Prasad Kothe
359 Points
Posted by Prasad Kothe
Prasad Kothe
359 Points

Now add a String member variable named mTitle. Make it public.

Now add a String member variable named mTitle. Make it public.

2 Answers

Steve Hunter
Steve Hunter
57,712 Points

Hi Prasad,

You need to do pretty much what the question hints at; you've done the public class called PictureBook, now you want a public String called mTitle (inside the class):

public class PictureBook {
  public String mTitle;
}

I hope that helps.

Steve.

J Meacham
J Meacham
932 Points
J Meacham
J Meacham
932 Points

Thank you! For some reason I was struggling with this (perhaps because the class itself added a set of parenthesis before the semi colon). Fixed now. Much appreciated Steve.

Steve Hunter
Steve Hunter
57,712 Points

HI there,

The video shows the addition of a method:

public String getFact() {
  // do stuff in here
}

That's an ability, not a property. While the code may look similar to this:

public String mTitle;

it is actually very different. The method has public access so code outside of the class can use it; it returns a String once it has run (not in my code; but you return a fact from the course code), it takes no input hence the brackets are empty, (), and the actions the method takes are enclosed with curly braces, {}. I've got nothing in there at the moment, but you copied all the fact generation stuff in between the braces, right?

The mTitle is a property; a member variable. It, too, has public access but is of type String, it is called mTitle. So whilst the two bits of code look similar, they do very different things. You'll see more of methods and variables as you progress through the Android and Java courses.

The video was wholly correct in adding the parentheses as it was showing you how to refactor a method. The challenge wanted you to create a property, so there's no brackets.

I hope that makes sense!

Steve.