iOS requires that any app that you build and want to run on your phone or tablet must be signed with an Apple-issued certificate and provisioning profile. This manual explains the steps involved in bundling your game for iOS. During development, running your game through the development app is often preferred since it allows you to hot reload content and code wirelessly directly to your device.
The security associated with iOS apps consists of several components. You can get access to the required tools by singing up to the Apple’s iOS Developer Program. When you have enrolled, go to the Apple’s Developer Member Center.
The section Certificates, Identifiers & Profiles contains all the tools that you need. From here you can create, delete and edit:
some.prefix.*) which can be used with several apps. App IDs can contain Application Service information, like if the app enables Passbook integration, the Game Center, etc. Such App IDs cannot be wildcard identifiers. For Application Services to function, your application’s bundle identifier must match the App ID identifier.
When signing your games and apps in Defold, you need a valid certificate and a valid provisioning profile.
Some of the things you can do on the Member Center homepage you can also perform from inside the XCode development environment—if you have that installed.
If you don’t have Xcode installed you can find the identifier in iTunes. Click on the devices symbol and select your device.
Since Xcode 7, anyone can install Xcode and do on-device development for free. You don’t have to sign up for the iOS Developer Program. Instead, Xcode will automatically issue a certificate for you as a developer (valid for 1 year) and a provisioning profile for your app (valid for one week) on your specific device.
Make sure that Xcode has created a Provisioning Profile and Signing Certificate for the app.
When you have verified that the app works, find it on your disk. You can see the build location in the Build report in the “Report Navigator”.
Locate the app, right-click it and select Show Package Contents.
This provision file can be used together with your code signing identity to sign apps in Defold for one week, for one device. There is no way to add additional device UDIDs to this generated provisioning profile.
When the provision expires, you need to build the app again in Xcode and get a new temporary provision file as described above.
When you have the code signing identity and privisioning profile, you are ready to create a stand alone application bundle for your game from the editor. Simply select Project ▸ Bundle... ▸ iOS Application... from the menu.
Select your code signing identity and browse for your mobile provisioning file. Select which architectures (32 bit, 64 bit and the iOS simulator) to bundle for as well as the variant (Debug or Release). You can optionally untick the
Sign application checkbox to skip the signing process and then manually sign at a later stage.
You must untick the
Sign application checkbox when testing your game on the iOS simulator. You will be able to install the application but it will not boot.
Press Create Bundle and you will then be prompted to specify where on your computer the bundle will be created.
You specify what icon to use for the app, the launch screen image(s) and so forth on the game.project project settings file.
When your game launches on iOS, the launch images are used to set the correct screen resolution. If you do not supply the correct image size, you will get a lower resolution with resulting black bars.
The editor writes an .ipa file which is an iOS application bundle. To install the file on your device, you can use Xcode (via the “Devices and Simulators” window). Other options are to use a command line tool such as ios-deploy or iTunes.
You can use the
xcrun simctl command line tool to work with the iOS simulators available via Xcode:
# show a list of available devices xcrun simctl list # boot an iPhone X simulator xcrun simctl boot "iPhone X" # install your.app to a booted simulator xcrun simctl install booted your.app # launch the simulator open /Applications/Xcode.app/Contents/Developer/Applications/Simulator.app
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