updated gradle file

android/app/build.gradle

@@ -22,6 +22,11 @@ def flutterVersionName = localProperties.getProperty("flutter.versionName")
 if (flutterVersionName == null) {
     flutterVersionName = "1.0"
 }
+def keystoreProperties = new Properties()
+def keystorePropertiesFile = rootProject.file('key.properties')
+if (keystorePropertiesFile.exists()) {
+    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
+}
 
 android {
     namespace = "com.jhelum.gyawun"
@@ -33,29 +38,29 @@ android {
     }
 
     defaultConfig {
+        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId = "com.jhelum.gyawun"
+        // You can update the following values to match your application needs.
+        // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
         minSdk = flutter.minSdkVersion
         targetSdk = flutter.targetSdkVersion
         versionCode = flutterVersionCode.toInteger()
         versionName = flutterVersionName
     }
-    signingConfigs {
-       release {
-            def keystoreProperties = new Properties()
-            def keystorePropertiesFile = rootProject.file('key.properties')
-            if (keystorePropertiesFile.exists()) {
-                keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
-            }
-           keyAlias keystoreProperties['keyAlias']
-           keyPassword keystoreProperties['keyPassword']
-           storeFile keystoreProperties['storeFile'] ? file(keystoreProperties['storeFile']) : null
-           storePassword keystoreProperties['storePassword']
-       }
-   }
+//     signingConfigs {
+//        release {
+//            keyAlias keystoreProperties['keyAlias']
+//            keyPassword keystoreProperties['keyPassword']
+//            storeFile file(keystoreProperties['storeFile'])
+//            storePassword keystoreProperties['storePassword']
+//        }
+//    }
 
     buildTypes {
         release {
-            signingConfig = signingConfigs.release
+            // TODO: Add your own signing config for the release build.
+            // Signing with the debug keys for now, so `flutter run --release` works.
+            signingConfig = signingConfigs.debug
         }
     }
 }