Set min sdk version to 19

android/app/build.gradle

@@ -37,14 +37,12 @@ android {
     }
 
     defaultConfig {
-        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "io.vikunja.app"
-        minSdkVersion 18
+        minSdkVersion 19
         targetSdkVersion 28
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
-    
     }
 
     flavorDimensions "deploy"

android/build.gradle

@@ -21,8 +21,6 @@ allprojects {
 rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
-}
-subprojects {
     project.evaluationDependsOn(':app')
 }