AndroidでGroovyを使ってみる

/hoge/fuga.mp3     -> hoge/fuga.mp3
/hoge/fugafuga.mp3 -> hoge/fugafuga.mp3

def files = new File('Your Path').listFiles()
playList = files.findAll { it.getName() =~ /.*\.m3u$/ }

playList.each { file ->
  def playListName = file.canonicalPath

  // 変更版プレイリスト
  def newPlayListName = "${file.canonicalPath}.new"
  def newPlayListFile = new File(newPlayListName)

  // 変更版プレイリストに現行プレイリストの修正内容を出力
  newPlayListFile.withWriter('UTF-8') { writer ->
    file.newReader().transformLine(writer) { line ->
      if (line.startsWith("/")){
        // 行の最初の文字の場合、「/」を置換する
        line.replaceFirst(/\//,"")
      } else {
        // それ以外の場合はそのまま出力
        line
      }
    }
  }

  // ファイル名を変更する
  file.renameTo("${file.canonicalPath}.old")
  newPlayListFile.renameTo("${playListName}")
}

$ curl -s http://get.sdkman.io | bash
$ sdk ls groovy
$ sdk install groovy 2.4.5
$ sdk use groovy 2.4.5

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.3.0'
        classpath 'org.codehaus.groovy:gradle-groovy-android-plugin:0.3.6'
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

apply plugin: 'com.android.application'
apply plugin: 'groovyx.grooid.groovy-android'

android {
    中略
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.1'
    compile 'com.android.support:design:23.1.1'
    compile 'org.codehaus.groovy:groovy:2.4.3:grooid'
}

project.androidGroovy {
    options {
        configure(groovyOptions) {
            encoding = 'UTF-8'
            forkOptions.jvmArgs = ['-noverify'] // maybe necessary if you use Google Play Services
        }
        sourceCompatibility = '1.7'
        targetCompatibility = '1.7'
    }
}

@CompileStatic
public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        def hello = { lang ->
            def toast = Toast.makeText(this, "Hello ${lang}!", Toast.LENGTH_LONG)
            toast.setGravity(Gravity.CENTER, 0, 0)
            toast.show()
        }
        hello("Hello Groovy on Android!")
    }
}

0:52:06 Platform and Plugin Updates: The following components are ready to update: Google Play services, Google Repository, Android SDK Platform-tools
1:14:33 Gradle sync started
1:14:57 Gradle sync completed
1:14:57 Executing tasks: [:app:generateDebugSources, :app:generateDebugAndroidTestSources]
1:15:01 Gradle build finished in 4s 168ms
1:15:41 Executing tasks: [:app:generateDebugSources, :app:generateDebugAndroidTestSources, :app:compileDebugSources, :app:compileDebugAndroidTestSources]
1:15:47 ExternalSystemException: String index out of range: -105

:app:compileDebugJavaWithJavac UP-TO-DATE
:app:compileDebugGroovyWithGroovyc
startup failed:
MainActivity.groovy: 53: expecting ')', found '}' @ line 53, column 13.
               }
               ^

1 error


 FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:compileDebugGroovyWithGroovyc'.
> Compilation failed; see the compiler error output for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 5.687 secs