Just a Theory

By David E. Wheeler

Posts about iOS

How to Integrate the TestFlight SDK into an iOS Project

I’ve started using TestFlight to release DesignScene betas to testers. The documentation is thin, so I had to futz a bit, but fortunately it’s a pretty simple app, so once I figured out that I just needed to stick to one “Team”, I was off and running. And let me tell you, TestFlight is a far easier way to distribute betas than the convoluted methods suggested by Apple. Much more beta user-friendly.

For us developers, the TestFlight SDK is particularly handy. Add it to your TestFlight-distributed project and get crash reports and remote logging, ask your testers for feedback, and other cool stuff. I’ve only just started using it, but the immediate diagnostic feedback has already proved invaluable.

Getting the TestFlight SDK to work is dead simple, but it’s not supported in App Store distributions. So I wanted to set things up so that it would always be included in beta releases and never in production releases. Getting to that point took a couple of days of futzing, as it’s not explicitly supposed by Xcode’s UI. The solution I came up with, thanks to this StackOverflow post, is to:

  • Add a “Beta” configuration to complement the default “Release” and “Debug” configurations
  • Add a preprocessor macro to allow conditional use of the TestFlight SDK
  • Use the EXCLUDED_SOURCE_FILE_NAMES setting to exclude the TestFlight library from “Release” builds

That last step makes me a bit nervous, but EXCLUDED_SOURCE_FILE_NAMES, while undocumented, seems to be reasonably well known. At any rate, I could find no better way to tie the inclusion of a library to a specific configuration, so I’m going with it. Better solutions welcome.

At any rate, here’s the step-by-step for Xcode 4.2:

  • Download the TestFlight SDK and unpack it.
  • Drag it into your project. Make sure that “Copy items into destination group’s folder” is checked, as is “Create groups for any added folders”. Include it in all relevant targets.
  • Create a “Beta” configuration:

    • Click on the app name in the navigator, then on the project name and then the info tab.
    • Under “Configurations”, click the plus sign and select “Duplicate “Release” Configuration”
    • Type “Beta” to name the new configuration.

    You should end up with something like this:


  • Create configuration macros:


    • Still in the project settings, go to the “Build Settings” tab.
    • Search for “preprocessor macros”.
    • Double-click the value section next to the “Preprocessor Macros” label, hit the + button, and enter CONFIGURATION_$(CONFIGURATION).

    You should end up with a window like the above. Once you close it, you should see the macros names for each individual configuration, shown here:


  • Add the EXCLUDED_SOURCE_FILE_NAMES build setting.

    • Still in the “Build Settings” tab, click the “Add Build Setting” button in the lower-left corner and select “Add User-Defined Setting”.
    • Input EXCLUDED_SOURCE_FILE_NAMES as the name of the setting.
    • Open the reveal triangle next to the setting name.
    • Double-click to the right of “Release”.
    • Enter *libTestFlight.a as the value.

    You should end up with the value *libTestFlight.a only for the “Release” configuration, as shown here:


  • Go ahead and use the TestFlight SDK:

    • In your app delegate, add #include "testFlight.h"
    • In -application:didFinishLaunchingWithOptions:, just before returning, add these lines:

      #ifdef CONFIGURATION_Beta
          [TestFlight takeOff:@"Insert your Team Token here"];

Now, when you build or archive with the “Beta” target, the TestFlight SDK will be included and log sessions. But when you build with the “Release” target, TestFlight will neither be bundled or referenced in the app. You can include it anywhere, though, and use any of its features, as long as you do so only within a #ifdef CONFIGURATION_Beta block. Check out the complete SDK docs for details. Then, get your beta on!

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Byline: A Case Study Apple and Google Philosophical Differences

My favorite iPhone feed reading app is Byline by Phantom Fish. It syncs really well with Google Reader, so that things stay more-or-less in sync with NetNewsWire on my Mac. Unlike NetNewsWire, which added Google Reader syncing in 2009, Byline was built with Google Reader syncing from the beginning. Version 3.0 is especially good; I love the ability to swipe between posts. And the killer feature is the archiving of all content after a sync, so that everything loads fast — or on cross-country flights. News junkie that I am, Byline is one of my most-used apps.

Byline Edit Mode

Another great feature is Byline’s edit mode. When looking at a long list of new posts in a particular feed (for me it most often happens with the CPAN Uploads feed — CPAN gets a lot of uploads every day!), most of which I don’t care to read, I tap the “Edit” button to enter edit mode and then start tapping the blue dots to mark a whole bunch of items as unread. But not all of them; I leave the ones I’d like to read. But there’s a problem. At the top of the screen, directly above the top read/unread toggle button, is a button labeled “Mark All as Read.” As soon as you tap this button, Byline exits edit mode and shifts back to the main screen.

It’s a handy shortcut if you actually want to mark all as read. But what if you accidentally hit it, as I’ve done, oh, 20 or 30 times? Well, easy, right? Just go back into that feed, enter edit mode again, and then go over the list again and mark those you still want to read as unread, right? Yes, except for one thing: if Byline syncs before you’ve had a chance to read those posts you’ve just marked as unread, they automatically get marked as unread again. If you’ve elected to include unread items in Byline (it’s a setting), you can’t tell which ones were magically marked as unread by the sync. And if you don’t have unread items included in Byline, those items are just gone.

This has annoyed me many times.

In fairness, it’s not entirely Byline’s fault. One of its design philosophies is to use the Google API eagerly. So as soon as you’re done reading something, it’s marked as read, whether or not the app is actively syncing to Google Reader. This is handy because it means as soon as I’ve read something, if I sync NetNewsWire on my desktop, it’s marked as read there, too. It minimizes the appearance of duplication.

@phfish: “@theory I think they do it for performance reasons. It is a bit of an irritation, though.”

One of the APIs it calls ASAP is Google Reader’s “Mark All as Read API call”, and as Phantom Fish has said, Google provides no way to un-do that call. The result, for me at least, and certainly other users, is the loss of unread items.

I’ve had an interesting Twitter conversation with Phantom Fish about this issue this morning, trying to brainstorm ways to work around it. For me, I’d like to see either a confirmation button when I hit “Mark All as Read,” or have it not immediately leave edit mode but turn the “Mark All as Read” button into an “Undo” button, so that I have a chance to undo the marking all as read while still in edit mode, before the API call gets sent to Google. Phantom Fish is understandably reluctant to make a change such as this, however, because so many people like and have requested the single-tap to mark all as read. There are users who want both things. And Phantom Fish is reluctant to add a setting for such a feature, and indeed, I also tend to favor convention over configuration.

It’s a bit of a thorny issue, but one that I think nicely highlights the philosophical difference between Apple and Google. On iOS, I’m used to nothing I do while in an edit mode being committed until I hit the “Done” button. Byline’s “Mark All as Read” button short-circuits this behavior by ending the editing without me hitting “Done,” and instantly calls the Reader API. This is very convenient for power users (who never hit the “Mark All as Read” button accidentally, I guess), and strongly reminds me of how Geek-oriented Google applications like Reader are. I’m guessing such power users are Google Reader users. I’m not, I just use it for syncing.

The emphasis of “Mark all as Read” and its underlying API is ro “get things done in as few steps as possible.” This contrasts with the Apple philosophy exhibited in iOS, where things should of course be done as efficiently as possible, but where, I think, the principle of least surprise is emphasized. It’s handy to mark all as read with one tap, unless you didn’t want to, in which case it’s surprising that you can’t get the unread items back—specially since you never told the app you were done editing. Google Reader power-user types want the convenience of one tap. Folks like me, used to the relatively low levels of the unexpected on iOS, want things to change only when we say we’re ready for the change.

Anyway, I expect that Phantom Fish will work out some way to deal with this issue. (Frankly, I’d welcome the ability to exclude certain feeds from Byine, as NetNewsWire for iOS does, so that I don’t have to bother with some feeds on my iPhone, but that’s a different feature request.) But I thought it was interesting, in discussing the issue, how UI philosophical interests can conflict. Frankly, I think that iOS apps should be more iOSy in this respect (in all other ways Byline is very iOSy), but others disagree, and it makes for an interesting conversation.

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