Upgrade react native along with gradle and native classes.

Author: nyilmaz

android/build.gradle

@@ -1,38 +1,41 @@
 buildscript {
-    repositories {
-        jcenter()
-    }
+  repositories {
+    google()
+    jcenter()
+  }
 
-    dependencies {
-        classpath 'com.android.tools.build:gradle:2.1.0'
-    }
+  dependencies {
+    classpath 'com.android.tools.build:gradle:3.1.4'
+  }
 }
 
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 23
-    buildToolsVersion "23.0.1"
+  compileSdkVersion 27
 
-    defaultConfig {
-        minSdkVersion 16
-        targetSdkVersion 22
-        versionCode 1
-        versionName "1.0"
-        ndk {
-            abiFilters "armeabi-v7a", "x86"
-        }
+  defaultConfig {
+    minSdkVersion 16
+    targetSdkVersion 27
+    versionCode 1
+    versionName "1.0"
+    ndk {
+      abiFilters "armeabi-v7a", "x86"
     }
+  }
 }
 
-repositories {
-    mavenCentral()
+allprojects {
+  repositories {
+    google()
+    jcenter()
     maven {
-        // All of React Native (JS, Obj-C sources, Android binaries) is installed from npm
-        url "$rootDir/../node_modules/react-native/android"
+      // All of React Native (JS, Android binaries) is installed from npm
+      url "$rootDir/../node_modules/react-native/android"
     }
+  }
 }
 
 dependencies {
-    compile 'com.facebook.react:react-native:+'
+  implementation "com.facebook.react:react-native:0.57.+"
 }

android/gradle/wrapper/gradle-wrapper.jar

@@ -1,6 +1,5 @@
-#Mon Dec 28 10:00:20 PST 2015
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-bin.zip

android/gradle/wrapper/gradle-wrapper.properties

@@ -8,7 +8,6 @@
 import com.facebook.react.bridge.NativeModule;
 import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.uimanager.ViewManager;
-import com.facebook.react.bridge.JavaScriptModule;
 
 public class RCTBluetoothSerialPackage implements ReactPackage {
     static final String TAG = "BluetoothSerial";
@@ -20,11 +19,6 @@ public List<NativeModule> createNativeModules(ReactApplicationContext reactConte
         return modules;
     }
 
-    @Override
-    public List<Class<? extends JavaScriptModule>> createJSModules() {
-        return Collections.emptyList();
-    }
-
     @Override
     public List<ViewManager> createViewManagers(ReactApplicationContext reactContext) {
         return Collections.emptyList();