Update tools and libraries (#14)

* Migration library to use android ndk CMake build system

* Migration library to use android ndk CMake build system

- Renaming 'native' methods

* Try to update to latest leveldb and new build tools

* Update android build tools and gradle
Update min version to 14
Update target version to 28
Update leveldb to use source from master
Update CMakeLists to use CMakeLists of leveldb

* Delete .idea folder from git

* Delete empty example project

* Update travis config and .cc file to fix some warnings

* Update .travis.yml

* Update .travis.yml

* Update .travis.yml

* Update Unit test and test libraries

* Update travis.yml

* Update travis.yml

* Update .travis.yml

* Update gradle to use cmake version 3.10.2

* Update .travis.yml

* Update .travis.yml

* Update README.md

* Update project build.gradle

* Update README.md

* Fix AndroidLogger
Move utility methods and classes to separate file

Author: proxain

.gitignore

@@ -5,6 +5,44 @@ test
 target
 log
 
-/.idea/workspace.xml
+/.idea
 /.idea/tasks.xml
-/.idea/libraries
+# built application files
+*.apk
+*.ap_
+
+# files for the dex VM
+*.dex
+
+# Java class files
+*.class
+
+# built native files (uncomment if you build your own)
+# *.o
+# *.so
+
+# generated files
+bin/
+gen/
+
+# Ignore gradle files
+# Local configuration file (sdk path, etc)
+# Proguard folder generated by Eclipse
+proguard/
+
+# Eclipse Metadata
+.metadata/
+
+# Mac OS X clutter
+*.DS_Store
+
+# Windows clutter
+Thumbs.db
+
+# Intellij IDEA (see https://intellij-support.jetbrains.com/entries/23393067)
+*.iml
+/gradle
+leveldb/.externalNativeBuild/
+.idea/runConfigurations.xml
+/gradlew
+gradlew.bat

.gitmodules

@@ -1,3 +1,3 @@
 [submodule "leveldb/src/main/jni-prebuild/leveldb"]
-	path = leveldb/src/main/jni-prebuild/leveldb
+	path = leveldb/src/main/cpp/leveldb
 	url = https://github.com/google/leveldb.git

.idea/.name

@@ -1,33 +1,55 @@
 language: android
-
-jdk:
-  - oraclejdk8
+dist: trusty
+sudo: required
+jdk: oraclejdk8
 
 env:
-  matrix:
-    - ANDROID_ABI=armeabi-v7a
+  global:
+  - ANDROID_API_LEVEL=28
+  - ANDROID_BUILD_TOOLS_VERSION=28.0.3
+  - ANDROID_ABI=armeabi-v7a
 
 android:
   components:
     - tools
     - platform-tools
-    - build-tools-23.0.3
+    - tools
+    - build-tools-25.0.2
+    - extra-google-google_play_services
     - extra-google-m2repository
     - extra-android-m2repository
     - android-24
-    - sys-img-armeabi-v7a-android-24
+    - android-22
+    - sys-img-armeabi-v7a-android-22
+  licenses:
+    - 'android-sdk-preview-license-52d11cd2'
+    - 'android-sdk-license-.+'
+    - 'google-gdk-license-.+'
 
 before_install:
-  - jdk_switcher use oraclejdk8
-  - java -version
-  - android list targets
-  - echo no | android create avd --force -n test -t android-24 --abi $ANDROID_ABI
+  - touch $HOME/.android/repositories.cfg
+  - yes | sdkmanager "platforms;android-28"
+  - yes | sdkmanager "build-tools;28.0.3"
+  - echo no | android create avd --force -n test -t android-22 --abi $ANDROID_ABI -c 32M
   - emulator -avd test -no-skin -no-audio -no-window &
-  - wget https://dl.google.com/android/repository/android-ndk-r13-linux-x86_64.zip
-  - unzip -q android-ndk-r13-linux-x86_64.zip
-  - export PATH=$PATH:$PWD/android-ndk-r13
+
+install:
+  - echo y | sdkmanager "ndk-bundle"
+  - echo y | sdkmanager --channel=3 --channel=1 "cmake;3.10.2.4988404"
+  - echo y | sdkmanager "lldb;3.1"
+
+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/
+  - $HOME/.android/build-cache
 
 before_script:
+  - chmod +x gradlew
   - ./ci/wait_for_emulator.sh
 
 script: ./gradlew connectedCheck