added support for fetching configs from android and ios envs

Author: csath

android/.project

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>android</name>
+	<comment>Project android created by Buildship.</comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.buildship.core.gradleprojectbuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.buildship.core.gradleprojectnature</nature>
+	</natures>
+</projectDescription>

android/.settings/org.eclipse.buildship.core.prefs

@@ -0,0 +1,2 @@
+connection.project.dir=
+eclipse.preferences.version=1

android/src/main/java/com/reactlibrary/RNConfigReaderModule.java

@@ -1,6 +1,7 @@
 
 package com.reactlibrary;
 
+import java.lang.reflect.*;
 import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.bridge.ReactContextBaseJavaModule;
 import com.facebook.react.bridge.ReactMethod;
@@ -19,4 +20,25 @@ public RNConfigReaderModule(ReactApplicationContext reactContext) {
   public String getName() {
     return "RNConfigReader";
   }
+
+  @Override
+  public Map<String, Object> getConstants() {
+      final Map<String, Object> constants = new HashMap<>();
+      Field[] fields = BuildConfig.class.getDeclaredFields();
+      for (Field f : fields) {
+          if (Modifier.isStatic(f.getModifiers())) {
+              Object value = null;
+              try{
+                  value = f.get(null);
+              }
+              catch(Exception e){
+
+              }
+              finally {
+                  constants.put(f.getName(), value);
+              }
+          } 
+      }
+      return constants;
+  }
 }

index.js

@@ -1,6 +1,6 @@
 
-import { NativeModules } from 'react-native';
+import { NativeModules, Platform } from 'react-native';
 
 const { RNConfigReader } = NativeModules;
 
-export default RNConfigReader;
+export default Platform.OS === 'ios' ? RNConfigReader.BuildConfigs : RNConfigReader;

ios/RNConfigReader.m

@@ -9,5 +9,10 @@ - (dispatch_queue_t)methodQueue
 }
 RCT_EXPORT_MODULE()
 
+- (NSDictionary *)constantsToExport
+{
+  return @{ @"BuildConfigs": [[NSBundle mainBundle] infoDictionary] };
+}
+
 @end
 

package.json

@@ -2,19 +2,18 @@
 {
   "name": "react-native-config-reader",
   "version": "1.0.0",
-  "description": "",
+  "description": "Simply access android build configs and ios info.plist values in JS",
   "main": "index.js",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "keywords": [
     "react-native"
   ],
-  "author": "",
-  "license": "",
+  "author": "csath - chanakaathurugiriya@gmail.com",
+  "license": "MIT",
   "peerDependencies": {
     "react-native": "^0.41.2",
     "react-native-windows": "0.41.0-rc.1"
-
   }
 }

windows/RNConfigReader/RNConfigReaderModule.cs

@@ -29,5 +29,19 @@ public override string Name
                 return "RNConfigReader";
             }
         }
+
+        [Obsolete]
+        public override IReadOnlyDictionary<string, object> Constants
+        {
+            get
+            {
+                var constants = new Dictionary<string, object>
+                {
+                    { "BuildConfigs", Package.Current.localSettings }
+                };
+
+                return constants;
+            }
+        }
     }
 }