Android extend multiple activity types

Question

I'm wanting to extend both a MapActivity and a FragmentActivity. I know Java doesn't allow multiple inheritance, so how do I do this? I've read something about a 'composite' type, but I've never implemented one so I don't know how to go about doing that.

Someone else HAS to have run into this before, how did you solve it?

EDIT: The reason I want this is because I have 3 activities in tabs; a map, an image gallery, and a settings list view. The code for all three of these "acitivities" is inside one big MapActivity called "Main". Yes I know this is ugly, and not good programming practice, and I don't remember why I wrote it this way. I think it was because I was reading most people recommended NOT having separate activities for separate tabs... which if I decided to split them into separate activities, I wouldn't have this problem anymore.

Who says it's not a good idea to use separate Activities? Other than the introduction of fragments, I can't see why they are a bad thing to do. — ahodder, Jun 05 '12 at 16:46
@AedonEtLIRA - http://stackoverflow.com/questions/1590340/android-tabs-mapview-activities-within-tabs http://stackoverflow.com/questions/1568739/android-why-shouldnt-i-use-activities-inside-tabs — joshkendrick, Jun 05 '12 at 17:23
I scoured the links you sent, and it definitely appears you are correct, and to that, thanks. That is something I have not run into yet and it makes a hell of a lot of sense. However, since Java does not have multiple inheritance, I would just stick to the multiple activity methodology for now. You can always come back an modify it later, if need be. — ahodder, Jun 05 '12 at 17:57

score 0 · Answer 1 · answered Jun 05 '12 at 15:10

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I have no idea why you would want such a thing, but I suppose the easiest solution is something like ActivityGroup, something similar to how TabbedActivity works.

answered Jun 05 '12 at 15:10

ahodder

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activitygroup is deprecated, so i'd rather not use it. ill edit my question to try to provide a why – joshkendrick Jun 05 '12 at 15:43
I agree I also don't see why you would want to do that. – Proxy32 Jun 05 '12 at 15:44
I haven't used fragments yet. I still program for the majority (2.2-2.3). However, the same can be accomplished using a fragment. – ahodder Jun 05 '12 at 16:44

score 0 · Accepted Answer · edited May 23 '17 at 10:24

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I ended up solving this by going in and modifying the source of the Android support package and deploying my app with that. Outlined here, all I did was make FragmentActivity (android.support.v4.app) extend MapActivity. I don't think the reverse works... though maybe, and it would require you having the source of the mapping library you're using (in the case of Google Maps - no go)

edited May 23 '17 at 10:24

Community

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answered Dec 18 '12 at 21:03

joshkendrick

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Android extend multiple activity types

2 Answers2