Update SDK to final release 28 (#242)

Update SDK to final release 28

.travis.yml

@@ -3,8 +3,8 @@ language: android
 jdk: oraclejdk8
 env:
   global:
-  - ANDROID_API=P
-  - ANDROID_BUILD_TOOLS=28.0.0-rc2
+  - ANDROID_API=28
+  - ANDROID_BUILD_TOOLS=28.0.0
   - secure: 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
   - secure: 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
 before_cache:

SWADroid/build.gradle

@@ -25,7 +25,8 @@ def static getBuildConfigField(String property){
 }
 
 android {
-    compileSdkVersion "android-P"
+    compileSdkVersion "android-28"
+    buildToolsVersion '28.0.0'
 
     dexOptions {
         maxProcessCount=2
@@ -42,7 +43,7 @@ android {
         versionName gitVersionName
 
         minSdkVersion 14
-        targetSdkVersion "P"
+        targetSdkVersion 28
 
         testApplicationId "es.ugr.swad.swadroid.test"
         testInstrumentationRunner "android.test.InstrumentationTestRunner"
@@ -58,9 +59,9 @@ android {
 
 // TODO Switch to release versions when Android P is released
 dependencies {
-    implementation 'com.android.support:support-v4:28.0.0-alpha1'
-    implementation 'com.android.support:appcompat-v7:28.0.0-alpha1'
-    implementation 'com.google.android.gms:play-services-analytics:15.0.2'
+    implementation 'com.android.support:support-v4:28.0.0-alpha3'
+    implementation 'com.android.support:appcompat-v7:28.0.0-alpha3'
+    implementation 'com.google.android.gms:play-services-analytics:16.0.0'
     implementation 'com.google.code.ksoap2-android:ksoap2-android:3.6.2'
     implementation 'commons-io:commons-io:2.6'
     implementation 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'