Merge pull request #121 from erijo/travis

Fix travis automatic build and deploy

.travis.yml

@@ -6,21 +6,34 @@ android:
     - platform-tools
     - tools
     - build-tools-26.0.2
-    - android-24
+    - android-26
     - extra-android-m2repository
 
+branches:
+  except:
+    - travis-dev-build
+
+before_script:
+  - sed -i -re 's/(versionName ".*)"/\1-dev_'${TRAVIS_COMMIT:0:8}'"/' android_app/app/build.gradle
+
+script: cd android_app && ./gradlew testDebug assembleDebug
+
+before_deploy:
+  - ln -s app/build/outputs/apk/debug/app-debug.apk openScale-dev-build.apk
+  - git tag -f travis-dev-build
+  - git remote add gh https://${TRAVIS_REPO_SLUG%/*}:${GITHUB_API_KEY}@github.com/${TRAVIS_REPO_SLUG}.git
+  - git push -f gh travis-dev-build
+  - git remote remove gh
+
 deploy:
   provider: releases
   api-key: $GITHUB_API_KEY
-  file: $HOME/openScale-dev-build.apk
+  file: openScale-dev-build.apk
   skip_cleanup: true
-  name: "openScale dev build"
-  body: "Automatically openScale dev build by Travis CI"
+  name: openScale development build
+  body: Automatic openScale development build of $TRAVIS_BRANCH ($TRAVIS_COMMIT) built by Travis CI on $(date +'%F %T %Z').
   prerelease: true
   overwrite: true
-
-after_success:
- - chmod +x ./upload_apk.sh
- - ./upload_apk.sh
-
-script: cd android_app && ./gradlew testDebug assembleDebug
+  target_commitish: $TRAVIS_COMMIT
+  on:
+    branch: master

README.md

@@ -9,7 +9,7 @@ openScale is an open source app which support various Bluetooth scales to keep e
 <a href="https://play.google.com/store/apps/details?id=com.health.openscale" target="_blank">
 <img src="https://play.google.com/intl/en_us/badges/images/generic/en-play-badge.png" alt="Get it on Google Play" height="80"/></a>
 
-Install [openScale-dev-build.apk](https://github.com/oliexdev/openScale/releases) to get the latest development build generated by [Travis CI](https://travis-ci.org/). But be aware that this version may contain bugs and you don't get any automatically updates. 
+Install [openScale-dev-build.apk](https://github.com/oliexdev/openScale/releases/tag/travis-dev-build) to get the latest development build generated by [Travis CI](https://travis-ci.org/). But be aware that this version may contain bugs and you don't get any automatically updates.
 
 # Features
 

android_app/upload_apk.sh

@@ -1,4 +0,0 @@
-#!/bin/sh
-
-# copy apk file to home
-cp app/build/outputs/apk/debug/app-debug.apk $HOME/openScale-dev-build.apk