İnternet permission eklendi böylece font download problemi çözüldü.

Author: Sonderman

android/app/build.gradle

@@ -25,6 +25,11 @@ apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
+def keystoreProperties = new Properties()
+def keystorePropertiesFile = rootProject.file('key.properties')
+if (keystorePropertiesFile.exists()) {
+    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
+}
 android {
     compileSdkVersion 29
 
@@ -44,12 +49,18 @@ android {
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
     }
-
+    signingConfigs {
+        release {
+            keyAlias keystoreProperties['keyAlias']
+            keyPassword keystoreProperties['keyPassword']
+            storeFile keystoreProperties['storeFile'] ? file(keystoreProperties['storeFile']) : null
+            storePassword keystoreProperties['storePassword']
+        }
+    }
     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
+            minifyEnabled true
+            signingConfig signingConfigs.release
         }
     }
 }

android/app/src/main/AndroidManifest.xml

@@ -5,6 +5,7 @@
          In most cases you can leave this as-is, but you if you want to provide
          additional functionality it is fine to subclass or reimplement
          FlutterApplication and put your custom class here. -->
+    <uses-permission android:name="android.permission.INTERNET" />
     <application
         android:name="io.flutter.app.FlutterApplication"
         android:label="Task Manager"

android/build.gradle

@@ -6,7 +6,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.0.1'
+        classpath 'com.android.tools.build:gradle:3.6.3'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }

pubspec.yaml

@@ -4,7 +4,7 @@ description: A new Flutter application.
 publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 
 
-version: 1.0.0+1
+version: 1.0.1+2
 
 environment:
   sdk: ">=2.7.0 <3.0.0"