build apk

example/android/app/build.gradle

@@ -41,11 +41,20 @@ android {
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
 
+    signingConfigs {
+        release {
+            storeFile file("my-release-key.keystore")
+            storePassword "aa19921209"
+            keyAlias "my-key-alias"
+            keyPassword "aa19921209"
+        }
+    }
+
     buildTypes {
         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
+            signingConfig signingConfigs.release
         }
     }
 }