add travis configuration

.travis.yml

@@ -0,0 +1,30 @@
+language: android
+jdk: oraclejdk8
+dist: trusty
+
+android:
+  components:
+    - tools
+    - platform-tools
+    - build-tools-28.0.3
+    - android-28
+
+before_script:
+  - export NDK_VERSION=r19c
+  - curl -L https://dl.google.com/android/repository/android-ndk-${NDK_VERSION}-linux-x86_64.zip -O
+  - unzip -q android-ndk-${NDK_VERSION}-linux-x86_64.zip
+  - export ANDROID_NDK_HOME=`pwd`/android-ndk-${NDK_VERSION}
+
+before_cache:
+  - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
+  - rm -fr $HOME/.gradle/caches/*/plugin-resolution/
+cache:
+  directories:
+    - $HOME/.gradle/caches/
+    - $HOME/.gradle/wrapper/
+
+script:
+  - ./gradlew assembleDebug
+
+notifications:
+  email: false

app/build.gradle

@@ -14,7 +14,7 @@ android {
         applicationId "org.purplei2p.i2pd"
         targetSdkVersion 29
         minSdkVersion 14
-        versionCode 2321
+        versionCode 23210
         versionName "2.32.1"
         setProperty("archivesBaseName", archivesBaseName + "-" + versionName)