การสร้าง Keystore และการ Build app ใน Flutter

keytool -genkey -v -keystore c:\\keystore\\upload-keystore.jks -storetype JKS -keyalg RSA -keysize 2048 -validity 10000 -alias upload

storePassword=<password from previous step>
keyPassword=<password from previous step>
keyAlias=upload
storeFile=<location of the key store file, such as /Users/<user name>/upload-keystore.jks>

storePassword=123456789
keyPassword=123456789
keyAlias=upload
storeFile=c:\\keystore\\upload-keystore.jks

.....
  child: MaterialApp(
            debugShowCheckedModeBanner: false, // เอาป้าย dubug mode ออก
            theme: ThemeData(
                primarySwatch: Colors.red
            ),
.....
...

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.flutter_app2">
    <uses-permission android:name="android.permission.INTERNET" />
   <application
        android:label="demo app"
        android:icon="@mipmap/ic_launcher">
        <activity
            android:name=".MainActivity"
            android:launchMode="singleTop"
            android:theme="@style/LaunchTheme"
            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
            android:hardwareAccelerated="true"
            android:windowSoftInputMode="adjustResize">
            <!-- Specifies an Android theme to apply to this Activity as soon as
                 the Android process has started. This theme is visible to the user
                 while the Flutter UI initializes. After that, this theme continues
                 to determine the Window background behind the Flutter UI. -->
            <meta-data
              android:name="io.flutter.embedding.android.NormalTheme"
              android:resource="@style/NormalTheme"
....
....

<uses-permission android:name="android.permission.INTERNET" />

def keystoreProperties = new Properties()
def keystorePropertiesFile = rootProject.file('key.properties')
if (keystorePropertiesFile.exists()) {
    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
}

   signingConfigs {
       release {
           keyAlias keystoreProperties['keyAlias']
           keyPassword keystoreProperties['keyPassword']
           storeFile keystoreProperties['storeFile'] ? file(keystoreProperties['storeFile']) : null
           storePassword keystoreProperties['storePassword']
       }
   }
   buildTypes {
       release {
           signingConfig signingConfigs.release
       }
   }

flutter clean
flutter pub get

flutter build apk --split-per-abi

flutter install