Trouble Publishing Android Studio Library on jCenter with Bintray - android-studio

Question

I'm following this tutorial to publish an example Android Studio library on Jcenter:
http://crushingcode.co/publish-your-android-library-via-jcenter/
It seems very clear.
I've created my GitHub repository with this library at this link:
https://github.com/alessandroargentieri/mylibview
I've also Signed in to Bintray.com, and created a new repository which must contain my library (as explained in the tutorial above).
To publish a repository on Bintray I must create an organisation, then you create the repository. So these are my data:
Bintray username: alessandroargentieri
organisation: alexmawashi
repository: https://bintray.com/alexmawashi/my_android_repository
then, in Android Studio, in the gradle file of my library module, I've this data:
apply plugin: 'com.android.library'
ext {
bintrayRepo = 'my_android_repository' //maven
bintrayName = 'mylibview' // Has to be same as your library module name
publishedGroupId = 'mawashi.alex.mylittlelibrary'
libraryName = 'MyLibView'
artifact = 'mylibview' // Has to be same as your library module name
libraryDescription = 'Android Library to use a custom view'
// Your github repo link
siteUrl = 'https://github.com/alessandroargentieri/mylibview'
gitUrl = 'https://github.com/alessandroargentieri/mylibview.git'
githubRepository= 'alessandroargentieri/mylibview'
libraryVersion = '1.0'
developerId = 'alexmawashi'
developerName = 'Alessandro Argentieri'
developerEmail = 'alexmawashi87#gmail.com'
licenseName = 'The Apache Software License, Version 2.0'
licenseUrl = 'http://www.apache.org/licenses/LICENSE-2.0.txt'
allLicenses = ["Apache-2.0"]
}
...
...
apply from: 'https://raw.githubusercontent.com/nisrulz/JCenter/master/installv1.gradle'
apply from: 'https://raw.githubusercontent.com/nisrulz/JCenter/master/bintrayv1.gradle'
When I use the terminal and write:
gradlew clean build install bintrayUpload --stacktrace
After a few minutes, I get this error:
What went wrong:
Execution failed for task ':mylittlelibrary:bintrayUpload'.
> Could not create package 'alessandroargentieri/my_android_repository/mylibview': HTTP/1.1 404 Not Found [message:Repo 'my_android_repository' was not found]
What am I doing wrong?
Thanks.

Answer 1

There also might be a problem here:
https://raw.githubusercontent.com/nisrulz/JCenter/master/bintrayv1.gradle
If your repo belong to your organisation then you are going to need the userOrg parameter set.
See https://github.com/bintray/gradle-bintray-plugin#step-4-add-your-bintray-package-information-to-the-bintray-closure step 4
Also see: HTTP/1.1 401 Unauthorized when uploading binary on bintray

Answer 2

For this to work properly, your gradle.properties file needs to have a bintray.user and a bintray.apikey (which is your bintray API key) configured (see the include in https://raw.githubusercontent.com/nisrulz/JCenter/master/bintrayv1.gradle )