Merge pull request #682 from Instabug/refactor/android-dynamic-min-sdk-version

[MOB-8849] Get Android's `minSdkVersion` from user's Android project

Author: Ali Abdelfattah

android/build.gradle

@@ -1,17 +1,20 @@
 
 apply plugin: 'com.android.library'
 
-def DEFAULT_COMPILE_SDK_VERSION = 28
-def DEFAULT_BUILD_TOOLS_VERSION = "28.0.0"
-def DEFAULT_TARGET_SDK_VERSION = 28
+String getExtOrDefault(String name) {
+    if (rootProject.ext.has(name)) {
+        return rootProject.ext.get(name)
+    }
+    return project.properties['InstabugReactNative_' + name]
+}
 
 android {
-    compileSdkVersion rootProject.hasProperty('compileSdkVersion') ? rootProject.compileSdkVersion : DEFAULT_COMPILE_SDK_VERSION
-    buildToolsVersion rootProject.hasProperty('buildToolsVersion') ? rootProject.buildToolsVersion : DEFAULT_BUILD_TOOLS_VERSION
+    compileSdkVersion getExtOrDefault('compileSdkVersion').toInteger()
+    buildToolsVersion getExtOrDefault('buildToolsVersion')
 
     defaultConfig {
-        minSdkVersion 16
-        targetSdkVersion rootProject.hasProperty('targetSdkVersion') ? rootProject.targetSdkVersion : DEFAULT_TARGET_SDK_VERSION
+        minSdkVersion getExtOrDefault('minSdkVersion').toInteger()
+        targetSdkVersion getExtOrDefault('targetSdkVersion').toInteger()
         versionCode 1
         versionName "1.0"
         ndk {

android/gradle.properties

@@ -0,0 +1,4 @@
+InstabugReactNative_compileSdkVersion=30
+InstabugReactNative_buildToolsVersion='30.0.2'
+InstabugReactNative_targetSdkVersion=31
+InstabugReactNative_minSdkVersion=16