升级gradle kotlin配置，versionCode和Name使用git commit次数和tag标记

Author: iOrchid

app/build.gradle

@@ -6,16 +6,26 @@ apply plugin: 'kotlin-kapt'
 
 apply plugin: "androidx.navigation.safeargs"
 
+//定义使用当前分支的commit次数作为int值，用于versionCode
+static def getGitVersionCode() {
+    return 'git rev-list HEAD --first-parent --count'.execute().text.trim().toInteger()
+}
+//使用git中的tag作为versionName
+static def getGitVersionName() {
+    //因为指令获取的是 v1.1.1-13-ge084397 格式的，所以需要有效部分即可
+    return 'git describe --tags'.execute().text.trim().substring(0,6)
+}
+
 android {
     compileSdkVersion 29
-    buildToolsVersion = '29.0.0'
+    buildToolsVersion = '29.0.1'
 
     defaultConfig {
         applicationId "org.zhiwei.jetpack"
         minSdkVersion 21
         targetSdkVersion 29
-        versionCode 2
-        versionName "1.1.2"
+        versionCode getGitVersionCode()
+        versionName getGitVersionName()
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 
 

build.gradle

@@ -1,13 +1,13 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.3.40'
+    ext.kotlin_version = '1.3.41'
     repositories {
         google()
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.4.1'
+        classpath 'com.android.tools.build:gradle:3.4.2'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         classpath "android.arch.navigation:navigation-safe-args-gradle-plugin:1.0.0"