I would say yes.
As an iPhone developer, I would have no hesitation in agreeing to work to port a good Android app to the iPhone. Depending on the project, some source code may help. An example of this is the need to synchronize an application with a web service. In this case, it may be useful to see the data model, how the application interacts with the service, and so on. Data models and application structure are usually quite similar across languages, given that the application is well designed. These things can probably save you some time, even if you are not familiar with the language.
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