Debugging Flex-AIR apps on iPhone and iPad

Debugging iPad or iPhone apps that you built with FlashBuilder has a number of extra steps that you don’t need when developing with Android. This is especially true if you use Windows as your primary operating system. The good news is that once you’ve done it once or twice it should be fairly straight forward. So here are a few hints to get you going.

Step 0. If you are building on Windows make sure to install the latest version of iTunes. Then check that your iPad or iPhone can be synched with iTunes. If you use a mac you’ve most likely already done this step (in your sleep a hundred times).

Step 1. Make sure you have a certificate and provisioning file. This must be configured under FlashBuilder Project > Properties > Flex Build Packaging. IMPORTANT: If the certificate and provisioning file are not set up or are not valid you will not be able to compile your project. If you don’t know what this is or how to do it, additional info can be found here in a great blog post by Holly Schinsky (@devgirlFL).

Step 2. Set up a Debug Configuration. If you don’t know where that is, select the pulldown next to the bug icon on the FlashBuilder toolbar and then choose Debug Configuration, or go to Run > Debug Configurations. Choose Apple iOS as your Target Platform. Be sure to select the On Device Packaging Method > Fast! If you don’t do this and you choose the Standard option it will take five or more minutes to compile the build each time you hit debug, and that can become a huge time waster really fast. One advantage of using the Standard option is it will perform more like the final release build. In comparison, the Fast version won’t be as performant. So, for the vast majority of your debugging you should probably use Fast, and when you want to test a final build then you might want to choose Standard. When you are ready select the Debug button.

Step 3.  You will then see a popup window with six important instructions. Once you have completed Steps one and two, select the Show package in Explorer link.

Step 4. Drag the .ipa file from your file browser window into the iTunes Library > Apps area.

Step 5. Select the Sync button on the bottom right hand corner of iTunes. You should see Sync In Progress screen on your device. Let the operation complete. When it’s finished you should see a message in the message box at the top of iTunes that says the sync was successful. If there was an error it will also show up in the message box at the top of the iTumes application window.

Step 6. Launch the application on your iPad or iPhone. You should get a popup window titled Flash Debugger that asks for the IP address or hostname.  Important:  your iPad or iPhone and your development machine need to be on the same wireless LAN, if they aren’t then this step won’t work. If you don’t have a wireless LAN handy you can always log both machines into a MiFi or some other type of mobile hotspot. Then enter the IP address of your development machine. On a windows machine you can easily get that in a DOS prompt using the command ipconfig. Hit OK.

The Final Result. If all goes well the app will launch and you will start to see debugging output in FlashBuilder.

Tags: , , , , , , ,

3 Responses to “Debugging Flex-AIR apps on iPhone and iPad”

  1. Kim Jensen says:

    I have the same problem on my EVO when I start the Myprogram-debug. I use windows for flash builder 4.6.
    So what you are saying it is trying to connect to the computer. Is there anyway to turn it off, I need to have the unfinished application running on my phone to show it to clients.

  2. agup says:

    @Kim, if you want to show an app to clients then I suggest creating a release build. When you do that there won’t be any connection between FlashBuilder’s debugger and the phone app. Here’s an article that describes how to do that. Scroll down to the section called “Package for Distribution”: http://www.adobe.com/devnet/air/articles/packaging-air-apps-ios.html

  3. Manik Lal Sahu says:

    Thank you very much. This helped me lot, now I am able to debug via ipad.

Leave a Reply