Add configuration for MavenCentral publishing

build.gradle

@@ -9,6 +9,7 @@ buildscript {
         classpath 'com.android.tools.build:gradle:3.6.0'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        classpath "io.codearte.gradle.nexus:gradle-nexus-staging-plugin:0.22.0"
     }
 }
 
@@ -22,3 +23,5 @@ allprojects {
 ext {
     sdkVersion = 29
 }
+
+apply plugin: 'io.codearte.nexus-staging'

photoview/build.gradle

@@ -1,5 +1,6 @@
 apply plugin: 'com.android.library'
 apply plugin: 'maven-publish'
+apply plugin: 'signing'
 
 android {
     compileSdkVersion rootProject.ext.sdkVersion
@@ -16,24 +17,62 @@ dependencies {
     implementation "androidx.appcompat:appcompat:1.1.0"
 }
 
+def PUBLISH_GROUP_ID = 'com.github.chrisbanes'
+def PUBLISH_ARTIFACT_ID = 'PhotoView'
+def PUBLISH_VERSION = '2.3.0'
+
+ext["signing.keyId"] = ''
+ext["signing.password"] = ''
+ext["signing.secretKeyRingFile"] = ''
+ext["ossrhUsername"] = ''
+ext["ossrhPassword"] = ''
+ext["sonatypeStagingProfileId"] = ''
+
+File localPropsFile = project.rootProject.file('local.properties')
+if (localPropsFile.exists()) {
+    println "Found local props file, loading props from there"
+    Properties p = new Properties()
+    new FileInputStream(localPropsFile).withCloseable { is ->
+        p.load(is)
+    }
+    p.each { name, value ->
+        ext[name] = value
+    }
+} else {
+    println "No local props file, loading env vars instead"
+    ext["signing.keyId"] = System.getenv('SIGNING_KEY_ID')
+    ext["signing.password"] = System.getenv('SIGNING_PASSWORD')
+    ext["signing.secretKeyRingFile"] = System.getenv('SIGNING_SECRET_KEY_RING_FILE')
+    ext["ossrhUsername"] = System.getenv('OSSRH_USERNAME')
+    ext["ossrhPassword"] = System.getenv('OSSRH_PASSWORD')
+    ext["sonatypeStagingProfileId"] = System.getenv('SONATYPE_STAGING_PROFILE_ID')
+}
+
+nexusStaging {
+    packageGroup = PUBLISH_GROUP_ID
+    stagingProfileId = sonatypeStagingProfileId
+    username = ossrhUsername
+    password = ossrhPassword
+}
+
 afterEvaluate {
     publishing {
         publications {
             release(MavenPublication) {
                 from components.release
 
-                group = 'com.github.chrisbanes'
-                artifactId = 'PhotoView'
-                version = '2.3.0'
+                groupId PUBLISH_GROUP_ID
+                artifactId PUBLISH_ARTIFACT_ID
+                version PUBLISH_VERSION
 
                 // Adds javadocs and sources as separate jars.
                 artifact androidJavadocsJar
                 artifact(sourceJar)
 
                 pom {
-                    name = 'PhotoView'
+                    name = PUBLISH_ARTIFACT_ID
                     description = 'A simple ImageView that support zooming, both by Multi-touch gestures and double-tap.'
-                    url = 'https://github.com/chrisbanes/PhotoView'
+                    url = 'https://github.com/Baseflow/PhotoView'
                     licenses {
                         license {
                             name = 'The Apache License, Version 2.0'
@@ -47,16 +86,35 @@ afterEvaluate {
                         }
                     }
                     scm {
-                        connection = 'scm:[email protected]/chrisbanes/PhotoView.git'
-                        developerConnection = 'scm:[email protected]/chrisbanes/PhotoView.git'
-                        url = 'https://github.com/chrisbanes/PhotoView'
+                        connection = 'scm:[email protected]/Baseflow/PhotoView.git'
+                        developerConnection = 'scm:[email protected]/Baseflow/PhotoView.git'
+                        url = 'https://github.com/Baseflow/PhotoView'
                     }
                 }
             }
         }
+
+        repositories {
+            maven {
+                name = "sonatype"
+
+                def releasesRepoUrl = "https://oss.sonatype.org/service/local/staging/deploy/maven2/"
+                def snapshotsRepoUrl = "https://oss.sonatype.org/content/repositories/snapshots/"
+                url = version.endsWith('SNAPSHOT') ? snapshotsRepoUrl : releasesRepoUrl
+
+                credentials {
+                    username ossrhUsername
+                    password ossrhPassword
+                }
+            }
+        }
     }
 }
 
+signing {
+    sign publishing.publications
+}
+
 task androidJavadocs(type: Javadoc) {
     source = android.sourceSets.main.java.srcDirs
     classpath += project.files(android.getBootClasspath().join(File.pathSeparator))