Failed to build iOS App

Hello, I would like you to tell me why I failed to build iOS App. The details are as follows. I know that you are busy, so I am sorry for your inconvenience.

Overview (Required)

• Failed to build iOS App like the issue (#514)

Steps To Reproduce

1. Clone this repository
2. Move to the directory named ios-base and run the command make init && open DroidKaigi\ 2020.xcworkspace
3. Build the project
4. See error

Showing All Messages
FAILURE: Build failed with an exception.



* What went wrong:

A problem occurred configuring project ':android-base'.

> kotlin.KotlinNullPointerException (no error message)



* Try:

Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.



* Get more help at https://help.gradle.org



Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0.

Use '--warning-mode all' to show the individual deprecation warnings.

See https://docs.gradle.org/6.1/userguide/command_line_interface.html#sec:command_line_warnings



BUILD FAILED in 755ms

mkdir: /Users/k_muta/Documents/conference-app-2020/ios-base/build: File exists

cp: /Users/k_muta/Documents/conference-app-2020/ios-base/../ios-combined/build/bin/iosX64/debugFramework/ios_combined.framework: No such file or directory

Env:

• OS: Mac OS Mojave
• Tool: Xcode 11.3

[KaoruMuta]

@takahirom (CC: @ry-itto @roana0229 ) I just build successfully!! I reinstall java8 and set the path by running this command export JAVA_HOME=/Applications/Android\ Studio.app/Contents/jre/jdk/Contents/Home again. As a result, I did it😭😭

Sorry for bothering you…

If I have time and a chance to contribute your app, I will try it!

Thanks a lot😭😭

Kaoru Muta

[jonas-ms]

In case someone else encounters the same problem (for any Android project)…

For me the cause was that ANDROID_HOME environment variable was not set, nor did the local.properties file contain value for key sdk.dir.

Setting either of these variables to point to the where the Android SDK is installed - fixes the issue.

This issue appears when the project has data binding enabled and even for Gradle tasks that don’t use the Android SDK for anything.

So, for example, if you want to execute such a Gradle task on an environment that doesn’t have any Android SDK installed - you can set ANDROID_HOME to any path (eg: ANDROID_HOME=/tmp) and it will work (provided that the task you’ll be running doesn’t require Android SDK)