backup. before shop update

android/app/build.gradle

@@ -24,9 +24,10 @@ if (flutterVersionName == null) {
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
+apply plugin: 'com.google.gms.google-services'
 
 android {
-    compileSdkVersion 29
+    compileSdkVersion 30
 
     sourceSets {
         main.java.srcDirs += 'src/main/kotlin'
@@ -39,10 +40,11 @@ android {
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "us.minipos.flutter_wisetronic"
-        minSdkVersion 16
-        targetSdkVersion 29
+        minSdkVersion 19
+        targetSdkVersion 30
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
+        multiDexEnabled true
     }
 
     buildTypes {
@@ -60,4 +62,6 @@ flutter {
 
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation 'com.android.support:multidex:1.0.3'
+    implementation 'com.google.firebase:firebase-messaging:21.0.1'
 }