Target api level 28 (fixes #1355)

.travis.yml

@@ -7,8 +7,8 @@ android:
   components:
     - tools
     - platform-tools
-    - build-tools-27.0.3
-    - android-27
+    - build-tools-28.0.3
+    - android-28
     - extra-android-m2repository
 
 # Install Android NDK (apparently there is no easier way to do this)
@@ -24,7 +24,7 @@ before_install:
   - chmod +x ~/bin/gimme
   - eval "$(gimme stable)"
   # Hack to accept Android licenses
-  - yes | sdkmanager "platforms;android-27"
+  - yes | sdkmanager "platforms;android-28"
 
 # Cache gradle dependencies
 # https://docs.travis-ci.com/user/languages/android/#Caching

app/build.gradle

@@ -4,7 +4,7 @@ apply plugin: 'com.github.triplet.play'
 
 dependencies {
     implementation 'eu.chainfire:libsuperuser:1.1.0.201903290044'
-    implementation 'com.android.support:design:27.0.2'
+    implementation 'com.android.support:design:28.0.0'
     implementation 'com.google.zxing:android-integration:3.3.0'
     implementation 'com.google.code.gson:gson:2.8.5'
     implementation 'org.mindrot:jbcrypt:0.4'
@@ -20,8 +20,8 @@ dependencies {
 
 android {
     // Changes to these values need to be reflected in `.travis.yml`
-    compileSdkVersion 27
-    buildToolsVersion '27.0.3'
+    compileSdkVersion 28
+    buildToolsVersion '28.0.3'
 
     buildTypes.debug.applicationIdSuffix ".debug"
     dataBinding.enabled = true