Better Android SDK checking

build.gradle

@@ -15,6 +15,15 @@ buildscript {
     }
 }
 
+def keyProps = new Properties()
+def keyFile = file("local.properties")
+if (keyFile.exists()) keyFile.withInputStream { keyProps.load(it) }
+if (!keyProps.getProperty("sdk.dir", "").isEmpty()) {
+    project.ext.set("isAndroidSDKAvailable", true)
+} else {
+    project.ext.set("isAndroidSDKAvailable", false)
+}
+
 allprojects {
     group = "net.mamoe"
     version = getProperty("mirai_version")

mirai-core-qqandroid/build.gradle.kts

 @file:Suppress("UNUSED_VARIABLE")
-import java.util.Properties
 
 plugins {
     kotlin("multiplatform")
@@ -32,11 +31,8 @@ description = "QQ protocol library"
 version = rootProject.ext.get("mirai_version")!!.toString()
 
 kotlin {
-
-    val keyProps = Properties()
-    val keyFile = file("../local.properties")
-    if (keyFile.exists()) keyProps.load(keyFile.inputStream())
-    if (keyProps.getProperty("sdk.dir", "").isNotEmpty()) {
+    val isAndroidSDKAvailable: Boolean by project
+    if (isAndroidSDKAvailable) {
         android("android") {
             publishAllLibraryVariants()
             project.android {
@@ -57,7 +53,13 @@ kotlin {
         println(
             """Android SDK 可能未安装.
                 $name 的 Android 目标编译将不会进行. 
-                这不会影响 Android 以外的平台的编译, 因此 JVM 等平台相关的编译和测试均能正常进行.
+                这不会影响 Android 以外的平台的编译.
+            """.trimIndent()
+        )
+        println(
+            """Android SDK might not be installed.
+                Android target of $name will not be compiled. 
+                It does no influence on the compilation of other platforms.
             """.trimIndent()
         )
     }

mirai-core-timpc/build.gradle.kts

 @file:Suppress("UNUSED_VARIABLE")
-import java.util.Properties
 
 plugins {
     kotlin("multiplatform")
@@ -32,10 +31,8 @@ description = "QQ protocol library"
 version = rootProject.ext.get("mirai_version")!!.toString()
 
 kotlin {
-    val keyProps = Properties()
-    val keyFile = file("../local.properties")
-    if (keyFile.exists()) keyProps.load(keyFile.inputStream())
-    if (keyProps.getProperty("sdk.dir", "").isNotEmpty()) {
+    val isAndroidSDKAvailable: Boolean by project
+    if (isAndroidSDKAvailable) {
         android("android") {
             publishAllLibraryVariants()
             project.android {
@@ -56,7 +53,13 @@ kotlin {
         println(
             """Android SDK 可能未安装.
                 $name 的 Android 目标编译将不会进行. 
-                这不会影响 Android 以外的平台的编译, 因此 JVM 等平台相关的编译和测试均能正常进行.
+                这不会影响 Android 以外的平台的编译.
+            """.trimIndent()
+        )
+        println(
+            """Android SDK might not be installed.
+                Android target of $name will not be compiled. 
+                It does no influence on the compilation of other platforms.
             """.trimIndent()
         )
     }

mirai-core/build.gradle.kts

 @file:Suppress("UNUSED_VARIABLE")
 
-import java.util.*
-
 plugins {
     kotlin("multiplatform")
     id("kotlinx-atomicfu")
@@ -32,10 +30,8 @@ fun ktor(id: String, version: String) = "io.ktor:ktor-$id:$version"
 description = "QQ protocol library"
 
 kotlin {
-    val keyProps = Properties()
-    val keyFile = file("../local.properties")
-    if (keyFile.exists()) keyProps.load(keyFile.inputStream())
-    if (keyProps.getProperty("sdk.dir", "").isNotEmpty()) {
+    val isAndroidSDKAvailable: Boolean by project
+    if (isAndroidSDKAvailable) {
         android("android") {
             publishAllLibraryVariants()
             project.android {
@@ -56,7 +52,13 @@ kotlin {
         println(
             """Android SDK 可能未安装.
                 $name 的 Android 目标编译将不会进行. 
-                这不会影响 Android 以外的平台的编译, 因此 JVM 等平台相关的编译和测试均能正常进行.
+                这不会影响 Android 以外的平台的编译.
+            """.trimIndent()
+        )
+        println(
+            """Android SDK might not be installed.
+                Android target of $name will not be compiled. 
+                It does no influence on the compilation of other platforms.
             """.trimIndent()
         )
     }

settings.gradle

@@ -21,6 +21,17 @@ pluginManagement {
 
 rootProject.name = 'mirai'
 
+def keyProps = new Properties()
+def keyFile = file("local.properties")
+if (keyFile.exists()) keyFile.withInputStream { keyProps.load(it) }
+if (!keyProps.getProperty("sdk.dir", "").isEmpty()) {
+    include(':mirai-demos:mirai-demo-android')
+    project(':mirai-demos:mirai-demo-android').projectDir = file('mirai-demos/mirai-demo-android')
+} else {
+    println("Android SDK 可能未安装. \n将不会加载模块 `mirai-demo-android`, 但这并不影响其他 demo 的加载 ")
+    println("Android SDK might not be installed. \nModule `mirai-demo-android` will not be included, but other demos will not be influenced")
+}
+
 include(':mirai-core')
 include(':mirai-core-timpc')
 include(':mirai-core-qqandroid')
@@ -32,16 +43,6 @@ include(':mirai-demos:mirai-demo-1')
 include(':mirai-demos:mirai-demo-gentleman')
 include(':mirai-demos')
 
-def keyProps = new Properties()
-def keyFile = file("local.properties")
-if (keyFile.exists()) keyFile.withInputStream { keyProps.load(it) }
-if (!keyProps.getProperty("sdk.dir", "").isEmpty()) {
-    include(':mirai-demos:mirai-demo-android')
-    project(':mirai-demos:mirai-demo-android').projectDir = file('mirai-demos/mirai-demo-android')
-} else {
-    println("Android SDK 可能未安装. \n将不会加载模块 `mirai-demo-android`, 但这并不影响其他 demo 的加载 ")
-}
-
 def javaVersion = System.getProperty("java.version")
 if (javaVersion.substring(0, javaVersion.indexOf(".")).toInteger() >= 11) {
     include(':mirai-debug')