On Sat, Aug 7, 2010 at 8:50 PM, skyhigh <[email protected]> wrote: > However, I am having trouble trying to use reflection for the methods: > > requestAudioFocus > abandonAudioFocus > > because these methods require an OnAudioFocusChangeListener parameter > which is unknown on Android devices running 1.5 to 2.1. Because the > parameter type that must be passed into these methods is unknown and > also because my application has to have an instance of the > OnAudioFocusChangeListener object I am having trouble making > reflection work.
Use conditional class loading instead. This blog post refers to it as using a wrapper class: http://developer.android.com/resources/articles/backward-compatibility.html Here is a sample project demonstrating the concept with a somewhat different implementation: http://github.com/commonsguy/cw-advandroid/tree/master/Contacts/Spinners/ > I also > can't figure out how to define my instance of > OnAudioFocusChangeListener so that the application can be loaded on a > device running Android 1.5 through 2.1 without getting a Force Close > message while it is loading. Just don't load the class that has the OnAudioFocusChangeListener except on a 2.2 device. In other words, don't go down a code path that refers to OnAudioFocusChangeListener, except on a 2.2 device. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy Android App Developer Books: http://commonsware.com/books -- 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
