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Increments the android versionCode automatically on each debug or release build
task('increaseVersionCode') << {
def manifestFile = file("src/main/AndroidManifest.xml")
def pattern = Pattern.compile("versionCode=\"(\\d+)\"")
def matcher = pattern.matcher((CharSequence)manifestFile.getText())
def versionCode = Integer.parseInt(
manifestFile.write(matcher.replaceAll("versionCode=\"" + ++versionCode + "\""))
assembleDebug.dependsOn 'increaseVersionCode'
assembleRelease.dependsOn 'increaseVersionCode'
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