Update .travis.yml

.travis.yml

@@ -13,7 +13,7 @@ android:
 
 env:
   global:
-    - API=25 # Android API level 25 by default
+    - API=26 # Android API level 26 by default
     - TAG=google_apis # Google APIs by default, alternatively use default
     - ABI=armeabi-v7a # ARM ABI v7a by default
     - QEMU_AUDIO_DRV=none # Disable emulator audio to avoid warning
@@ -29,7 +29,7 @@ install:
 
   # Update sdk tools to latest version and install/update components
   - echo yes | sdkmanager "tools"
-  - echo yes | sdkmanager "platforms;android-25" # Latest platform required by SDK tools
+  - echo yes | sdkmanager "platforms;android-26" # Latest platform required by SDK tools
   - echo yes | sdkmanager "platforms;android-${API}" # Android platform required by emulator
   - echo yes | sdkmanager "extras;android;m2repository"
   - echo yes | sdkmanager "extras;google;m2repository"