Add raven-android submodule.

[bretthoerner]

I confused Github somehow. This is a clean diff moved from #231

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Probably belongs in raven-java:

• Add simple static interface for sending exceptions, setting breadcrumbs. (e.g. Raven.sendException(e) so they don't have to pass a client around everywhere)

Mandatory for Android "hello world" (this PR):

• Figure out a naming scheme for classes, they're wordy and/or confusing right now.
• Enforce async for all communication. (networking on Main thread is an exception in Android) https://developer.android.com/reference/android/os/AsyncTask.html
• Check internet connectivity permissions and complain in development mode.
• Take DSN from manifest, or constructor, else throw exception.
• Store exceptions when offline, send later.
• Add ability to set release, or take automatically from app version if possible.

Follow-on issues to create:

• Attach app/phone data automatically. (use contexts in json probably? Initial pass on context data sentry#3521)
• Breadcrumb support (and automatically add some crumbs if possible/sensible).
• Proguard handling. (like sourcemaps in JS, we can bundle a way to get source lines) Proguard support #317
• Add ability to disable uncaught exception handler. (?)
• Set environment automatically if possible Add support for 'environment' top level key on Events #232.

[bretthoerner]

Ugh, there are some comments here: #231 (review)

Github. :(

[tkaemming]

I obviously don't have much experience with Android, so depending on your experience and research with their APIs. Everything that isn't Android specific looks good to me, though.

[tkaemming]

Can't this use com.getsentry.raven.android.Raven at this point?

[AndreasBackx]

Any update on the Proguard handling? We'd love to finally switch over all of our error logging to Sentry, but currently Android is still using Crashlytics because of the proguard support. Sentry isn't really viable without Proguard support for Android. There was an issue on this last year in the sentry repo, any update about that too perhaps?

[bretthoerner]

Hey @AndreasBackx, Proguard support is super high priority for us. Soon!

[AndreasBackx]

@bretthoerner I myself would love to help out (even though I'm pretty tight on time). How far is development regarding proguard right now and how can I/we help? It shouldn't be a problem for me dive in either the core of sentry or raven-java. Could you sum up what needs to be done or what still needs to be done in greater detail?

[bretthoerner]

@AndreasBackx I responded to you on a new ticket: #317

[AndreasBackx]

@bretthoerner might be a good idea to add it to the original PR's checkbox.