Introduction to Android Activities with Kotlin

macsimus · July 26, 2017, 7:01pm

Learn about one of the most important concepts within Android apps with this introduction to Android activities tutorial, using Kotlin!

This is a companion discussion topic for the original entry at https://www.raywenderlich.com/500-introduction-to-android-activities-with-kotlin

dlwanst · July 31, 2017, 3:08pm

I have downloaded the starter project but it won’t run on my mac. It comes up with the following error:

Error:(7, 0) Gradle DSL method not found: ‘google()’
Possible causes:

The project ‘ForgetMeNot-starter’ may be using a version of Gradle that does not contain the method.
Open Gradle wrapper file
The build file may be missing a Gradle plugin.
Apply Gradle plugin

macsimus · July 31, 2017, 4:26pm

Hi dlwanst. What version of Android Studio are you using? Also, when opening the project, did you receive any prompts to update gradle or the gradle plugin?

dlwanst · July 31, 2017, 5:18pm

Android 2.3.3

regarding updates - not that I recall.

i was able to download and run omg-android-starter ok

macsimus · July 31, 2017, 5:37pm

Thanks dlwanst! The starter project requires Android Studio 3.0 Canary 5 or later. Android Studio 3.0 should be going stable soon. You can download the latest Android Studio 3.0 preview from here:

The preview version can be installed alongside the latest stable release. Just be sure to rename one of them first or put them in different folders in your Mac.

princenoodle · August 25, 2017, 2:36am

I have exact same error. Gradle DSL method not found: ‘google()’

Using Mac
Android Studio 3.0 Beta 3
Build #AI-171.4294784, built on August 23, 2017
JRE: 1.8.0_152-release-915-b01 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Mac OS X 10.12.6

princenoodle · August 25, 2017, 2:55am

sorry disregard previous. I figured out kotlin wasn’t running because it wasn’t in tools menu.

I restarted android studio 3 and kotlin showed up again.

Android Studio didn’t like the task clean(type:Delete).
Error:(31, 0) Declaring custom ‘clean’ task when using the standard Gradle lifecycle plugins is not allowed.

If you comment it out the next build error is compileSdkVersion not specified.

Gradle ‘ForgetMeNot-starter’ project refresh failed
Error:Cause: compileSdkVersion is not specified.

shogunkaramazov · November 17, 2017, 5:27pm

This tutorial is more than six months old so questions are no longer supported at the moment for it. We will update it as soon as possible. Thank you! :]