jitpack.io dependencies are not working - android-studio

Question

I cannot get jitpack.io dependencies to work with gradle. I know there are other questions but none of the suggested tips helped. The problem is, jitpack.io dependencies are not working at all. In theory it should be simple... add the mavel { url ... } and the compile declarative. But i keep getting an error that the dependency cannot be resolved.
I updated android-studio, which suggested to update and then updated gradle. Since every jitpack.io dependency is not working, it must be related to the configuration of gradle overall. Unfortunately i have no clou where to start.
I tried different repositories, so that should not be the problem. I also checked the corresponding build logs.
Can anybody help me?
This are my whole gradle files, they should be fine.
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
jcenter()
mavenCentral()
maven { url "http://jitpack.io" }
}
dependencies {
classpath 'com.android.tools.build:gradle:2.2.2'
classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
}
}
and
apply plugin: 'com.android.application'
apply plugin: 'com.neenbedankt.android-apt'
android {
compileSdkVersion 23
buildToolsVersion "23.0.0"
defaultConfig {
applicationId "patrickstummer.com.bonario_internal"
minSdkVersion 19
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:24.0.0-alpha2'
compile 'com.jakewharton:butterknife:8.4.0'
apt 'com.jakewharton:butterknife-compiler:8.4.0'
compile 'com.github.soroushjavdan:ApplicationLocker:62301ce0b4'
}

Answer 1

Add it in your root build.gradle at the end of repositories:
allprojects {
repositories {
...
maven { url "https://jitpack.io" }
}
}
Add the dependency
dependencies {
compile 'com.github.User:Repo:Tag'
}