update compileSdkVersion to 28, too

Simon-Laux · Simon-Laux · commit 19b10929d829 · 2019-06-24T22:45:45.000+02:00
diff --git a/app/build.gradle b/app/build.gradle
@@ -1,7 +1,7 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 26
+    compileSdkVersion 28
     defaultConfig {
         applicationId "de.simonlaux.ziphtmlviewer"
         // don't go bellow 19, otherwise you may introduce web-view security risks
