fix: make android gradle safe by adding safeExtGet

Author: matinzd

android/build.gradle

@@ -1,24 +1,58 @@
+buildscript {
+    if (project == rootProject) {
+        repositories {
+            google()
+            jcenter()
+        }
+
+        dependencies {
+            classpath 'com.android.tools.build:gradle:3.5.3'
+        }
+    }
+}
+
 apply plugin: 'com.android.library'
 
-android {
-    compileSdkVersion 28
-    buildToolsVersion "28.0.3"
+def safeExtGet(prop, fallback) {
+    rootProject.ext.has(prop) ? rootProject.ext.get(prop) : fallback
+}
 
+android {
+    compileSdkVersion safeExtGet('compileSdkVersion', 29)
+    buildToolsVersion safeExtGet('buildToolsVersion', '29.0.2')
     defaultConfig {
-        minSdkVersion rootProject.hasProperty('minSdkVersion') ? rootProject.minSdkVersion : 16
-        targetSdkVersion 28
+        minSdkVersion safeExtGet('minSdkVersion', 16)
+        targetSdkVersion safeExtGet('targetSdkVersion', 29)
         versionCode 1
         versionName "1.0"
-        ndk {
-            abiFilters "armeabi-v7a", "x86"
+
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
         }
     }
     lintOptions {
-       warning 'InvalidPackage'
+        disable 'GradleCompatible'
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
     }
 }
 
-dependencies {
-    implementation 'com.facebook.react:react-native:+'
+repositories {
+    mavenLocal()
+    maven {
+        // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
+        url("$rootDir/../node_modules/react-native/android")
+    }
+    google()
+    jcenter()
 }
 
+dependencies {
+    //noinspection GradleDynamicVersion
+    implementation "com.facebook.react:react-native:+"  // From node_modules
+}