1. Using Maven to build Java & Android
program
Kewang

2. 2
Install Maven
● Download from [HERE]
(http://maven.apache.org/download.cgi)
– Or apt-get / yum / brew ......
● Add env.
– M2_HOME=/opt/maven
– M2=$M2_HOME/bin
● Run mvn --version
– verify mvn is installed correctly.

3. 3
About me
●
王慕羣 (Kewang)
● Skills
– Android
– AWS (EC2, S3, DynamoDB)
– Hadoop (HBase, MapReduce)
– Node.js, Rails
● Company
– Mitake Inc.
● Others
– Google Play, GitHub, slideshare, Scribd

4. Maven

5. 5
Maven's objectives
● Making the build process easy
● Providing a uniform build system
● Providing quality project information
● Providing guidelines for best practices development
● Allowing transparent migration to new features

6. 6
Maven can manage ...
● Builds
● Documentation
● Reporting
● Dependencies
● SCMs
● Releases
● Distribution

7. 7
Maven's concepts
● Project Object Model
● Convention over Configuration (CoC)
● Dependency management
● Plugin-based architecture

8. 8
Project Object Model

9. 9
Project Object Model
<project>
<modelVersion>4.0.0</modelVersion>
<groupId>com.mycompany.app</groupId>
<artifactId>my-app</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>my-app</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>

10. 10
Convention over Configuration

11. 11
Convention over Configuration
<sourceDirectory>/tmp/tts/src</sourceDirectory>
<scriptSourceDirectory>/tmp/tts/src/main/scripts</scriptSourceDirectory>
<testSourceDirectory>/tmp/tts/src/test/java</testSourceDirectory>
<outputDirectory>/tmp/tts/target/classes</outputDirectory>
<testOutputDirectory>/tmp/tts/target/test-classes</testOutputDirectory>
<resources>
<resource>
<directory>/tmp/tts/src/main/resources</directory>
</resource>
</resources>
<testResources>
<testResource>
<directory>/tmp/tts/src/test/resources</directory>
</testResource>
</testResources>
mvn help:effective-pom

12. 12
Convention over Configuration
<sourceDirectory>/tmp/tts/src</sourceDirectory>
<scriptSourceDirectory>/tmp/tts/src/main/scripts</scriptSourceDirectory>
<testSourceDirectory>/tmp/tts/src/test/java</testSourceDirectory>
<outputDirectory>/tmp/tts/target/classes</outputDirectory>
<testOutputDirectory>/tmp/tts/target/test-classes</testOutputDirectory>
<resources>
<resource>
<directory>/tmp/tts/src/main/resources</directory>
</resource>
</resources>
<testResources>
<testResource>
<directory>/tmp/tts/src/test/resources</directory>
</testResource>
</testResources>
mvn help:effective-pom

13. 13
Dependency management

14. 14
Dependency management
<dependencies>
<dependency>
<groupId>android</groupId>
<artifactId>android</artifactId>
<version>2.3.3_r2</version>
<scope>provided</scope>
</dependency>
</dependencies>

15. 15
Dependency management
<dependencies>
<dependency>
<groupId>android</groupId>
<artifactId>android</artifactId>
<version>2.3.3_r2</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.squareup.picasso</groupId>
<artifactId>picasso</artifactId>
<version>2.2.0</version>
</dependency>
</dependencies>

16. 16
Plugin-based architecture

17. 17
Plugin-based architecture
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<configuration>
<mainClass>com.mycompany.example.App</mainClass>
</configuration>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.0</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
</plugins>

18. Maven lifecycle &
commands

19. 19
Maven lifecycle

20. 20
Maven commands
● mvn clean
– Remove all previous build generated files.
● mvn compile
– Compile the source code of the project.
● mvn test
– Run tests using a suitable unit testing framework.
● mvn package
– Package compiled code to distributable format.
● mvn install
– Install the package into the local repository.
● mvn deploy
– Copy the final package to the remote repository.

21. Build a simple
Java project

22. 22
Step by step
● Normalize directory structure
● Write pom.xml
● Run it

23. 23
Normalize directory structure

24. 24
Or maven-archetype-quickstart
mvn archetype:generate
-DgroupId=com.mycompany.app
-DartifactId=my-app
-DarchetypeArtifactId=maven-archetype-quickstart
-DinteractiveMode=false

25. 25
Write pom.xml
<project>
<modelVersion>4.0.0</modelVersion>
<groupId>com.mycompany.app</groupId>
<artifactId>my-app</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>my-app</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>

26. 26
mvn clean compile

27. 27
mvn clean compile
only
compiled
class

28. 28
mvn clean package

29. 29
mvn clean package
include
test file,
jar file...

30. but it can't run ...

31. 31
mvn clean compile exec:java
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<configuration>
<mainClass>com.mycompany.example.App</mainClass>
</configuration>
</plugin>
</plugins>
</build>

32. 32
mvn clean compile exec:java
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<configuration>
<mainClass>com.mycompany.example.App</mainClass>
</configuration>
</plugin>
</plugins>
</build>
remember assign <mainClass/>

33. Live DEMO

34. Apply Maven to
Android

35. 35
Project directory structure

36. 36
Step by step
● Install Android SDK
● Run Maven Android SDK Deployer
● Write pom.xml
● Run it

37. 37
Install Android SDK, at least ...
● All versions SDK Platform
● All versions Google APIs
● All Extra items (including obsoleted)
● Glass Development Kit Sneak Peek

38. 38
Run Maven Android SDK Deployer
● Checkout mosabua/maven-android-sdk-deployer
● mvn install

39. 39
Run Maven Android SDK Deployer
● Checkout mosabua/maven-android-sdk-deployer
● mvn install
copy all jar files to maven repository

40. 40
Use Android libraries like ...
<dependency>
<groupId>android</groupId>
<artifactId>android</artifactId>
<version>4.4_r1</version>
<scope>provided</scope>
</dependency>

41. 41
Use Android libraries like ...
<dependency>
<groupId>android</groupId>
<artifactId>android</artifactId>
<version>4.4_r1</version>
<scope>provided</scope>
</dependency>
"provided" stands for only
compile, not package itself

42. 42
Use Android libraries like ...
<dependency>
<groupId>com.google.android.maps</groupId>
<artifactId>maps</artifactId>
<version>19_r1</version>
<scope>provided</scope>
</dependency>

43. 43
Use Android libraries like ...
<dependency>
<groupId>android.support</groupId>
<artifactId>compatibility-v13</artifactId>
<version>19.0.1</version>
</dependency>

44. Write pom.xml

45. 45
<project> tags
<packaging>apk</packaging>

46. 46
<dependencies> tags
<dependency>
<groupId>android</groupId>
<artifactId>android</artifactId>
<version>4.0_r3</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>android.support</groupId>
<artifactId>compatibility-v4</artifactId>
<version>19.0.1</version>
</dependency>

47. 47
<plugins> tags
<plugin>
<groupId>com.jayway.maven.plugins.android.generation2</groupId>
<artifactId>android-maven-plugin</artifactId>
<version>3.8.1</version>
<extensions>true</extensions>
<configuration>
<sdk>
<platform>14</platform>
</sdk>
</configuration>
</plugin>

48. 48
mvn clean package

49. 49
mvn clean package
generates R.java

50. 50
mvn android:deploy android:run
● mvn android:deploy
– Install app to device
● mvn android:run
– Run app at device

51. Live DEMO

52. 52
android-maven-plugin FAQ

53. 53
android-maven-plugin FAQ
● No Android SDK path could be found.

54. 54
android-maven-plugin FAQ
● No Android SDK path could be found.
– no ANDROID_HOME env., or value is incorrect
● set ANDROID_HOME env. to Android SDK path

55. 55
android-maven-plugin FAQ
● No Android SDK path could be found.
– no ANDROID_HOME env., or value is incorrect
● set ANDROID_HOME env. to Android SDK path
● Unknown packaging: apk

56. 56
android-maven-plugin FAQ
● No Android SDK path could be found.
– no ANDROID_HOME env., or value is incorrect
● set ANDROID_HOME env. to Android SDK path
● Unknown packaging: apk
– no extensions tag, or value is not "true"
● <extensions>true</extensions>

57. 57
android-maven-plugin FAQ
● No Android SDK path could be found.
– no ANDROID_HOME env., or value is incorrect
● set ANDROID_HOME env. to Android SDK path
● Unknown packaging: apk
– no extensions tag, or value is not "true"
● <extensions>true</extensions>
● package R does not exist

58. 58
android-maven-plugin FAQ
● No Android SDK path could be found.
– no ANDROID_HOME env., or value is incorrect
● set ANDROID_HOME env. to Android SDK path
● Unknown packaging: apk
– no extensions tag, or value is not "true"
● <extensions>true</extensions>
● package R does not exist
– <packaging>jar</packaging>
● <packaging>apk</packaging>

59. 59
android-maven-plugin FAQ
● No Android SDK path could be found.
– no ANDROID_HOME env., or value is incorrect
● set ANDROID_HOME env.to Android SDK path
● Unknown packaging: apk
– no extensions tag, or value is not "true"
● <extensions>true</extensions>
● package R does not exist
– <packaging>jar</packaging>
● <packaging>apk</packaging>
● Ill-advised or mistaken usage of a core class

60. 60
android-maven-plugin FAQ
● No Android SDK path could be found.
– no ANDROID_HOME env., or value is incorrect
● set ANDROID_HOME env. to Android SDK path
● Unknown packaging: apk
– no extensions tag, or value is not "true"
● <extensions>true</extensions>
● package R does not exist
– <packaging>jar</packaging>
● <packaging>apk</packaging>
● Ill-advised or mistaken usage of a core class
– no scope tag, or value is not "provided"
● <scope>provided</scope>

61. Eclipse tips
IMPORTANT !!!

62. 62
Tips - How to use src folder ?

63. 63
Tips - How to use src folder ?
<build>
<sourceDirectory>src</sourceDirectory>
</build>

64. 64
Tips - How to use libs folder ?

65. 65
Tips - How to use libs folder ?
● mvn install:install-file
– -Dfile=<path-to-file>
– -DgroupId=<group-id>
– -DartifactId=<artifact-id>
– -Dversion=<version>
– -Dpackaging=jar

66. 66
Tips - How to use libs folder ?
● mvn install:install-file
– -Dfile=<path-to-file>
– -DgroupId=<group-id>
– -DartifactId=<artifact-id>
– -Dversion=<version>
– -Dpackaging=jar
● mvn install:install-file -Dfile=flappybird.jar
-DgroupId=tw.kewang -DartifactId=flappybird
-Dversion=1.0 -Dpackaging=jar

67. 67
Tips - How to use libs folder ?
● mvn install:install-file
– -Dfile=<path-to-file>
– -DgroupId=<group-id>
– -DartifactId=<artifact-id>
– -Dversion=<version>
– -Dpackaging=jar
● mvn install:install-file -Dfile=flappybird.jar
-DgroupId=tw.kewang -DartifactId=flappybird
-Dversion=1.0 -Dpackaging=jar
copy jar file to
maven repository

68. 68
Tips - How to use gen folder ?

69. 69
Tips - How to use gen folder ?
<plugin>
<groupId>com.jayway.maven.plugins.android.generation2</groupId>
<artifactId>android-maven-plugin</artifactId>
<configuration>
<genDirectory>gen</genDirectory>
</configuration>
</plugin>

70. 70
Tips - How to use gen folder ?
<plugin>
<groupId>com.jayway.maven.plugins.android.generation2</groupId>
<artifactId>android-maven-plugin</artifactId>
<configuration>
<genDirectory>gen</genDirectory>
</configuration>
</plugin>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>2.5</version>
<configuration>
<filesets>
<fileset>
<directory>gen</directory>
</fileset>
</filesets>
</configuration>
</plugin>

71. 71
Tips - How to use gen folder ?
<plugin>
<groupId>com.jayway.maven.plugins.android.generation2</groupId>
<artifactId>android-maven-plugin</artifactId>
<configuration>
<genDirectory>gen</genDirectory>
</configuration>
</plugin>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>2.5</version>
<configuration>
<filesets>
<fileset>
<directory>gen</directory>
</fileset>
</filesets>
</configuration>
</plugin>
remember clean gen folder

72. 72
Tips - How to clean bin folder ?
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>2.5</version>
<configuration>
<filesets>
<fileset>
<directory>bin</directory>
</fileset>
</filesets>
</configuration>
</plugin>

73. 73
Tips - How to use library project ?

74. 74
Tips - How to use library project ?
● Write pom.xml at library project as general
Android project

75. 75
Tips - How to use library project ?
● Write pom.xml at library project as general
Android project
● mvn clean android:apklib
– Apklib file includes src/main/java, libs & res directory

76. 76
Tips - How to use library project ?
● Write pom.xml at library project as general
Android project
● mvn clean android:apklib
– Apklib file includes src/main/java, libs & res directory
● Use install goal to copy apklib to maven repository

77. 77
Tips - How to use library project ?
● Write pom.xml at library project as general
Android project
● mvn clean android:apklib
– Apklib file includes src/main/java, libs & res directory
● Use install goal to copy apklib to maven repository
● Add dependency at main project
<dependency>
<groupId>tw.kewang.ui.captchaview</groupId>
<artifactId>CaptchaView</artifactId>
<version>1.0.0</version>
<type>apklib</type>
</dependency>

78. 78
Tips - How to use non-maven library ?
● Compress non-maven library to zip file

79. 79
Tips - How to use non-maven library ?
● Compress non-maven library to zip file
● Use install goal to copy zip to maven repository
– packaging=apklib

80. 80
Tips - How to use non-maven library ?
● Compress non-maven library to zip file
● Use install goal to copy zip to maven repository
– packaging=apklib
● Add dependency at main project
<dependency>
<groupId>tw.kewang.ui.captchaview</groupId>
<artifactId>CaptchaView</artifactId>
<version>1.0.0</version>
<type>apklib</type>
</dependency>

81. Show Time
github://kewangtw

82. 82
Show Time - google-tts
tts.say(sentence, true, new OnFinishListener() {
@Override
public void onFinish() {
Toast.makeText(this, sentence, Toast.LENGTH_SHORT).show();
}
});

83. 83
Show Time - map-controller
mc.startTrackMyLocation(new ChangeMyLocation() {
@Override
public void changed(GoogleMap map, Location location) {
Log.d("TRACK", location.toString());
}
});
mc.whenMapClick(new ClickCallback() {
@Override
public void clicked(GoogleMap map, LatLng latLng) {
Log.d("CLICK", latLng.toString());
}
});

84. 84
Show Time - CaptchaView
captcha.setPattern("1234567890");
captcha.setLength(6);
captcha.refresh();
if (captcha.getCaptcha().equals(check)) {
Log.d("CAPTCHA", "Success");
} else {
Log.d("CAPTCHA", "Fail");
}

85. 85
Show Time - tile
<tw.kewang.tile.Tile>
<tw.kewang.tile.TileGroup
tile:maxCells="3"
tile:x="450dp"
tile:y="50dp" >
<tw.kewang.tile.TileCell
tile:x="50dp"
tile:y="50dp" />
<tw.kewang.tile.TileCell
tile:x="100dp"
tile:y="150dp" />
</tw.kewang.tile.TileGroup>
</tw.kewang.tile.Tile>
tile2.setOnCellLongClickListener(new OnLongClickListener() {
@Override
public void onLongClick(TileGroup group, TileCell cell) {
tile2.startDrag();
}
});

86. 86
References
● Apache Maven Project
● Android Application Development with Maven
● Android Maven Plugin
● Maven Android SDK Deployer

87. 87