Problems with building APK

Hi, I wanted to update my local repository to - after long absence - continue working on the app (possibly trying to introduce a non-goolge-option … https://github.com/owntracks/android/pull/239). The new repository layout however seems to be a bit complicated? Maybe I did something wrong? There seem to be other people having trouble with it (https://github.com/owntracks/android/issues/386#issuecomment-240570715) so I open this issue.

I did a fresh clone in Android Studio 2.1 on Linux Mint, but afterwards, the IDE showed not much content. 😃 So i manually opened the sub-folder ‘project’ as a new project window, which then complained about

Error:Could not load wrapper properties from ‘[…]project/gradle/wrapper/gradle-wrapper.properties’. No value with key ‘distributionUrl’ specified in wrapper properties file ‘[…]/project/gradle/wrapper/gradle-wrapper.properties’.

So I copied the old gradle-wrapper.properties file, which had the following content:

#Mon Dec 28 10:00:20 PST 2015
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-2.10-all.zip

After Syncing the Project (Tool Window “Gradle”->“Refresh all Gradle Projects”), the files showed up correctly, i clicked “Run” to compile and deploy a debug version to my device connected via USB. It failed, because of

Error:(17, 33) error: package org.antlr.v4.runtime.misc does not exist and subsequent Error:(278, 44) error: cannot find symbol class NotNull

So I added compile 'org.antlr:antlr4-runtime:4.5.3'

to the “dependencies” section in project/app/build.gradle, synced the project again and did “Run” which finally worked! (although the first start took some time)

I explained my steps here very detailed, in case someone has the same kind of problems. I could also do a pull request for the latter two changes, if you are interested? The first problem (empty project when using the repository root) is not solved by that, though, and I have no idea how to fix that. All those Gradle-wrapper, properties, idea-files make me kind of nervous…

Also, there is another problem: I can’t get to build a final .apk via the Build->Build APK command. It always fails because of

Error⚠️ Ignoring InnerClasses attribute for an anonymous inner class Error:(org.eclipse.paho.client.mqttv3.MqttAsyncClient$1) that doesn’t come with an Error:associated EnclosingMethod attribute. This class was probably produced by a Error:compiler that did not target the modern .class file format. The recommended Error:solution is to recompile the class from source, using an up-to-date compiler Error:and without specifying any “-target” type options. The consequence of ignoring Error:this warning is that reflective operations on this class will incorrectly Error:indicate that it is not an inner class.

There is an upstream Issue filed: https://github.com/eclipse/paho.mqtt.android/issues/79 but it seems it may take a while until the new version gets released. I tried hours to apply multiple remedys I found on the Internet (Stack Overflow and such) to make the Builder ignore those warnings, but nothing helped. I tried adding

    lintOptions {
        abortOnError false
        checkReleaseBuilds false
    }

into the “android” section in project/app/build.gradle or adding a project.properties with proguard.config=proguard-project.txt and copying the old proguard-project.txt in or adding a proguard-rules.pro with

-keepattributes EnclosingMethod
-keepattributes InnerClasses
-dontoptimize

but nothing helped 😦 I’m a bit lost between all those dotfiles and conventions… it seems, the build process is not using any of them.

So, I managed to copy the installed debug apk from my phone to my own F-Droid repository. In case any of you would like to test a current version (latest repo), add https://fdroid.denk-nach-mcfly.de as a new repository to your F-Droid App. I cannot promise to keep it always up to date there, but if any of you is using it and tells about it here, it will raise my motivation 😉 and I will try to deploy new packages once in a while. Also remember: The repo is not yet authorized by the maintainers ( @binarybucks ), it is not an official repo, the app might be in an unstable state currently! But, since it uses a different id (org.owntracks.debug), it should be installable in parallel to the official app from the play store. I hope, it is OK with you @binarybucks and @jpmens ? I set up the repo mainly for myself in the first place, for debugging purposes, but if it might help somebody, I thought why not share? I don’t want to be rude or offend anybody with providing this alternative source!

Cheers!

[friesenkiwi]

Well, it is working now for me, I only thought, it might be good for other people to know… 😉 I was used to clone a project directly from a git repo (File->New->Project from Version control->Git). In this case, you need to make another step and open the project “a second time”. But never mind.

[binarybucks]

Are you trying to open the actual git root in Android Studio or the project/ dir? The later works fine for me and is how it should work. Opening the root should not and will not work because it just contains the readme and changelog.