Does your question 1 refer to the step in installation where you use the AVD and SDK Manager to install build target packages? If so, you can choose to install all of them without using up too much space on a big machine. If you install all of the build targets you will be sure to be compatible with example code that is set up for various API levels.
A null pointer exception reported in Eclipse that occurs in an Android XML editor usually means the visual editor could not interpret or create the XML correctly. The most common case I see that is attempting to use a layout editor where a View class has been subclassed and the subclass name is used in the layout - the layout editor can't handle that. So I suspect you have encountered something similar. Edit the XML "by hand" - switch to the xml view using the tabs at the bottom of the editor pane - and make sure that there are no errors in the XML file. On Jun 30, 10:01 am, Albion <[email protected]> wrote: > I've been following the tutorial at this > page...http://www.vogella.de/articles/Android/article.html > > I had originally sent an e-mail to the author of the tutorial who > promptly told me that I shouldn't e-mail him about his tutorial, but > should ask this group instead. Below is a copy of the e-mail I sent > him, I am hoping someone here can help. > > -- > > I am running Windows 7 Business x64 with the latest Microsoft > updates. Eclipse Helios Build: 20100617-1415 (IDE for Java > Developers), Android SDK r06, Android Developer Tools > 0.9.7.v201005071157-36220, Java JDK 6 update 20. All on a Quad core > E5345 with 8gig of RAM and lots and lots of hard drive space (space > isn't an issue). > > 1) In Section 2.3 under "Select available packages and select the > latest version of the SDK." your tutorial tells me to select all of > the Android 2.2 packages. What if I only want to code in Android > 1.6? Will I also need to get the 1.6 packages? The same for 2.1? > > 2) In section 4.3 you tell me to open strings.xml under res/values. > When I select the resource tab for strings.xml there is nothing listed > under Resource Elements, where you say I should see "hello (String)" > and "app_name (String)". When I try to add an element or do anything > else with the elements listed I get an error: "An error has > occurred. See error log for more details. > java.lang.NullPointerException." Even when I select the strings.xml > tab next to the resource tab and try to manually change the text, for > each character I type I get the same error. Google has turned up > nothing for that error on Eclipse with Android. I've tried completely > removing and reinstalling Eclipse and Android SDK, making sure I > followed your tutorial for both Eclipse install and Android install > much much closer. When I got back to the point of section 4.3 I got > the same errors. > > All in all I tried reinstalling both Eclipse and Android SDK 3 times, > following your tutorial closer each time, with the same result. Any > ideas what I may be doing wrong? > > I really appreciate the tutorial and your help. Thanks > > -- > > -Craig -- 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
