WIth those 3 languages you should be good. I had trouble wrapping my head around the Android Activity Lifecycle. Suggest you read the following and reference often: http://developer.android.com/guide/topics/fundamentals.html http://developer.android.com/guide/topics/fundamentals/activities.html particularly http://developer.android.com/guide/topics/fundamentals/activities.html#Lifecycle
To understand the lifecycle I found it helpful to put in stubs for the routines like OnPause OnResume OnStart, OnDestroy and others with nothing other than a Log.d message to show when they were called. (including Log.d in OnCreate). I was really surprised to see that OnCreate is NOT called every time that the launch icon is touched and that OnPause is called when going to the settings, OnResume when coming back. Orientation change is even more interesting. It's one thing to read it, but much more concrete when you see it in your own program. The Lifecycle does matter when writing code since the program is a living entity that may be around for days on your phone and never totally start from scratch. I came to Android/Java from 30 years of Assembler, COBOL, FORTRAN, PHP. The concept of objects having methods (that look like what I knew as subroutines in the code) and programs that don't end when finished (COBOL Stop Run, Java: finish() ) was a bit different. After a couple of months using Google's App Inventor (http:// appinventor.googlelabs.com/about/) then I totally understood the concept of objects and their related code. I've gone from thinking that Object Oriented programming is the next level of "dumbing down " programmers to "that's way cool and a good successor to what we used to call "structured programming" ". So in summary: - Use App Inventor for a couple of apps - read the suggested documentation - do the tutorials as another person as suggested - find a tutorial that does something you want in your program and use it as the basis Robert -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
