Okay I moved it and less errors are present now. However, ArrayList is underlined. Am I supposed to declare that as a variable?
On Mon, Aug 9, 2010 at 9:33 PM, Frank Weiss <[email protected]> wrote: > Thanks for getting down to the brass tacks. > > First, that field (aka member) declaration and initialization should > go inside the class declaration, not before it. > > Next is Java Generics, a powerful Java language feature that takes > some time getting used to. Here's the official story: > http://www.oracle.com/technetwork/articles/javase/generics-136597.html. > > I can summarize how it's applied to HelloItemizedOverlay. The > <OverlayItem> notation tells the compiler that you want this list to > only contain instances of OverlayItem (or its subclasses). This helps > to avoid programming errors, because now your code can only add that > type of object and the rest of the Android map API is gauranteed that > the list will only have objects of that type (or subtype). Also note > I'm using the terms type and class interchangably for this discussion. > > After the Activity lifecycle, I think the use of Java Generics is the > most difficult concept for Android newbies, so don't feel bad. But do > study these two concepts thoroughly to make your Android development > life easier. > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected]<android-developers%[email protected]> > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
