Android camera fixes, purchase screen fixes

android/app/build.gradle

@@ -12,6 +12,7 @@ if (flutterRoot == null) {
 }
 
 apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
 apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
 
 android {
@@ -24,7 +25,7 @@ android {
 
   defaultConfig {
     targetSdkVersion 27
-    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    minSdkVersion 16
     applicationId "com.dinect.checker"
   }
 
@@ -35,13 +36,13 @@ android {
     }
     release {
       signingConfig signingConfigs.debug
+      minifyEnabled false
+      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
     }
   }
 
   flavorDimensions "checker"
 
-  // Не смог разобраться, как коомбинировать flavors в flutter при запуске
-
   productFlavors {
 
     dinect {
@@ -174,16 +175,9 @@ android {
       buildConfigField "boolean", "showBonus", "true"
     }
 	}
-
-  sourceSets {
-
-    main.jniLibs.srcDir 'jniLibs'
-
-    pip {
-      res.srcDirs = ['src/pip/res']
-      manifest.srcFile 'src/pip/AndroidManifest.xml'
-    }
-
+  compileOptions {
+    targetCompatibility 1.8
+    sourceCompatibility 1.8
   }
 }
 
@@ -192,9 +186,17 @@ flutter {
 }
 
 dependencies {
-  compile fileTree(include: ['*.jar'], dir: 'libs')
-  compile 'com.android.support:appcompat-v7:27.1.0'
-  compile 'com.squareup.okhttp3:okhttp:3.8.1'
-  compile 'com.squareup.okio:okio:1.13.0'
-  compile 'me.dm7.barcodescanner:zxing:1.9.8'
+  implementation fileTree(include: ['*.jar'], dir: 'libs')
+  implementation 'com.android.support:appcompat-v7:27.1.1'
+  implementation 'com.android.support:recyclerview-v7:27.1.1'
+  implementation 'com.android.support:support-v4:27.1.1'
+  implementation 'com.android.support:support-media-compat:27.1.1'
+  implementation 'com.squareup.okhttp3:okhttp:3.9.0'
+  implementation 'com.squareup.okio:okio:1.13.0'
+  implementation 'me.dm7.barcodescanner:zxing:1.9.8'
+  implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+}
+
+repositories {
+  mavenCentral()
 }