implement android import, update android project and build for release

android/build.gradle

@@ -1,21 +1,49 @@
 buildscript {
     repositories {
+        google()
         jcenter()
+        maven {
+            url "https://plugins.gradle.org/m2/"
+        }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.1'
+        classpath 'com.android.tools.build:gradle:3.2.0'
+        classpath "gradle.plugin.com.gladed.gradle.androidgitversion:gradle-android-git-version:0.4.5"
     }
 }
-apply plugin: 'android'
+
+allprojects {
+    repositories {
+        google() // and here
+        jcenter()
+    }
+}
+
+apply plugin: "com.android.application"
+apply plugin: "com.gladed.androidgitversion"
+
+Properties properties = new Properties()
+properties.load(project.rootProject.file('local.properties').newDataInputStream())
+def sdkDir = properties.getProperty("sdk.dir")
+def classpath = "build/intermediates/classes/debug:" + sdkDir + "/platforms/android-26/android.jar"
+def activity = "com.omixlab.panopainter.MainActivity"
+def outpath = "src/main/cpp"
+
+def ver_branch = "git rev-parse --abbrev-ref HEAD".execute().text.trim()
+def ver_hash = "git log --pretty=format:%h -n 1".execute().text.trim()
+def ver_count = Integer.parseInt("git rev-list --count HEAD".execute().text.trim())
+def ver_tag = "git describe --tags --abbrev=0".execute().text.trim()
 
 android {
-    compileSdkVersion 19
-    buildToolsVersion '25.0.0'
+    compileSdkVersion 26
+    android.buildToolsVersion "28.0.3"
 
     defaultConfig {
-        applicationId = 'com.omigamedev'
-        minSdkVersion   9
-        targetSdkVersion  19
+        applicationId = 'com.omixlab.panopainter'
+        minSdkVersion   19
+        targetSdkVersion 26
+        versionCode ver_count
+        versionName "${ver_tag}.${ver_count}"
         // This block is different from the one you use to link Gradle
         // to your CMake or ndk-build script.
         externalNativeBuild {
@@ -27,11 +55,11 @@ android {
                 //cFlags "-D_EXAMPLE_C_FLAG1", "-D_EXAMPLE_C_FLAG2"
                 // Sets a flag to enable format macro constants for the C++ compiler.
                 //cppFlags "-D__STDC_FORMAT_MACROS"
-                arguments '-DANDROID_PLATFORM=android-19',
-                    '-DANDROID_TOOLCHAIN=clang',
-                    '-DANDROID_STL=gnustl_static',
-                    '-DCMAKE_BUILD_TYPE=Release',
-                    '-DANDROID_ARM_NEON=TRUE'
+                arguments   '-DANDROID_TOOLCHAIN=clang',
+                            //'-DANDROID_PLATFORM=android-19',
+                            '-DANDROID_STL=gnustl_static',
+                            '-DCMAKE_BUILD_TYPE=Release',
+                            '-DANDROID_ARM_NEON=TRUE'
             }
         }
         ndk {
@@ -52,10 +80,20 @@ android {
     //     }
     // }
 
+    signingConfigs {
+        release {
+            storeFile file("ppkey.jks")
+            storePassword "om4r@Pano#Painter_2018"
+            keyAlias "PanoPainter"
+            keyPassword "om4r@Pano#Painter_2018"
+        }
+    }
+
     buildTypes {
         release {
             minifyEnabled false
             proguardFile getDefaultProguardFile('proguard-android.txt')
+            signingConfig signingConfigs.release
         }
     }
 
@@ -80,3 +118,13 @@ task generateVersioning(type: Exec) {
     commandLine 'python', 'scripts/pre-build.py', 'release'
 }
 copyFiles.dependsOn(generateVersioning)
+
+task generateJavaH(type: Exec) {
+    workingDir "$projectDir"
+    commandLine 'javah', "-jni", "-force", "-cp", "$classpath", "-d", "$outpath", "$activity"
+}
+generateVersioning.dependsOn(generateJavaH)
+
+repositories {
+    google()
+}