The document summarizes topics discussed at the DroidKaigi 2017 conference on March 9th, including Kotlin, Android Studio 2.3, build flavors and build types in Build.gradle, signing configurations, logging with Timber, and testing logs. It also discusses ProGuard, the 64K method limit, multidexing, permissions with PermissionsDispatcher, and publishing to Google Play Console.

1. DroidKaigi 2017 3/9 18:00~
Kameron

2. 🎉🎉🎉

4. •
• Kotlin
•
•

6. • 2.3 Eclipse
•
•
•
•
•
•

7. •
• Android
• Android
•

8. •
• Android Studio
• Build.gradle
•
• OS,
• ProGuard
• Google Play Console

9. Android Studio

10. Android Studio (ver2.3)
• Jetbrains IDE
• Eclipse
• ADT
Android Studio

11. IDE
• Android Studio
Find Action
• Mac: ⌘ ⇧ A
• Windows: Ctrl Shift A
•
• Keymap

12.
• Android Studio
Search Everywhere
• Mac: ⇧ ⇧
• Windows:Shift Shift
•

13.
• Save Actions

14. • Plugin ADB IDEA

15. public class CalcUtil {
public static int mod(int x, int y) {
if (y == 0) {
throw new
IllegalArgumentException("y != 0");
}
return x % y;
}
}

16. public class CalcUtilTest {
@Test
public void 余りのテスト() {
Assert.assertThat(3,Is.is(CalcUtil.mod(11, 4)));
}
}

18. Build.gradle

19. Build.gradle
•
• AndroidManifest
Build.gradle
• AndroidManifest:
• Build.gradle:

20. •
•
•
Suffix

21. buildTypes {
release {}
debug {
applicationIdSuffix ".debug"
}
}
productFlavors {
demo {
applicationIdSuffix ".demo"
}
full {
applicationIdSuffix ".full"
}
}

22. •
• BuildConfig

23. buildTypes {
release {
buildConfigField "String", "ENDPOINT", ""https://hoge.com" "
}
debug {
applicationIdSuffix ".debug"
buildConfigField "String", "ENDPOINT", ""https://localhost" "
}
}
productFlavors {
demo {
buildConfigField "boolean", "DEMO", "true"
applicationIdSuffix ".demo"
}
full {
buildConfigField "boolean", "DEMO", "false"
applicationIdSuffix ".full"
}
}

24. buildTypes {
release {
buildConfigField "String", "ENDPOINT", ""https://hoge.com" "
}
debug {
applicationIdSuffix ".debug"
buildConfigField "String", "ENDPOINT", ""https://localhost" "
}
}
productFlavors {
demo {
buildConfigField "boolean", "DEMO", "true"
applicationIdSuffix ".demo"
}
full {
buildConfigField "boolean", "DEMO", "false"
applicationIdSuffix ".full"
}
}

25. •
• src/demoDebug/
• src/debug/
• src/demo/
• src/main/

26. •
• app/src/main/res/values/strings.xml
app/src/debug/res/values/strings.xml
•
<string name=“app_name">Debug</string>

27. • :
•
•
•
• : ON/OFF
• / : ON/OFF

28. def major = 1
def minor = 0
def patch = 0
def build = 0
android {
defaultConfig {
versionCode major * 10000 + minor * 1000 + patch
* 100 + build
versionName "${major}.${minor}.${patch}"
}
}

29. • build.gradle
• Private Repository
• CI
•
• git

30. signingConfigs {
release {
storeFile file(“./filepath”)
keyAlias “test”
storePassword “test”
keyPassword “test”
}
}

31. • keystore.properties
storePassword=myStorePassword
keyPassword=mykeyPassword
keyAlias=myKeyAlias
storeFile=myStoreFileLocation

32. • build.gradle
signingConfigs {
debug {
def keystorePropertiesFile =
rootProject.file("keystore.properties")
def keystoreProperties = new Properties()
keystoreProperties.load(new
FileInputStream(keystorePropertiesFile))
keyAlias keystoreProperties['keyAlias']
keyPassword keystoreProperties['keyPassword']
storeFile file(keystoreProperties['storeFile'])
storePassword keystoreProperties['storePassword']
}
}

34. •
•

35. Log
• JakeWharton/timber
• Debug
•
if (BuildConfig.DEBUG) {
Timber.plant(Timber.DebugTree())
}
Timber.d(“test”,”test”)

36. • facebook/stetho Chome
•
• mitmproxy
•
• python endpoint

39. • square/leakcanary
• Application

40. Log Unit Test
• Log ClassLoader Log
app/src/test/java/android/util/Log.java
public class Log {
public static int v(String tag, String msg) { return 0; }
public static int v(String tag, String msg, Throwable tr) { return 0; }
public static int d(String tag, String msg) { return 0; }
public static int d(String tag, String msg, Throwable tr) { return 0; }
public static int i(String tag, String msg) { return 0; }
public static int i(String tag, String msg, Throwable tr) { return 0; }
public static int w(String tag, String msg) { return 0; }
public static int w(String tag, String msg, Throwable tr) { return 0; }
public static int w(String tag, Throwable tr) { return 0; }
public static int e(String tag, String msg) { return 0; }
public static int e(String tag, String msg, Throwable tr) { return 0; }
}

41. ProGurad

42. ProGuard
•
•
•
public class MainActivity extends c {
private TextView m;
public MainActivity() {}
protected void onCreate(Bundle var1) {
super.onCreate(var1);
this.setContentView(2130968603);
this.m = (TextView)this.findViewById(2131427415);
this.m.setText("hello world");
}
}

43. 64k
• 64k
• ProGuard
• Multidex
64k

44. ProGuard
• ProGuard
•
• a,b
•
• Keep

45. ProGuard
• ProGuard
•
•
buildTypes {
debug {
minifyEnabled true
useProguard false
proguardFiles getDefaultProguardFile('proguard-
android.txt'),
'proguard-rules.pro'
}
}

46. • mapping.txt
Google Play Console

47. OS,

48. OS,
•

49. •
•
•
• Support Library

50. • Android 6.0
•
•
hotchemi/PermissionsDispatcher

51. Google Play Console

52. Google Play Console
• Google Play Google
• Android
• Amazon Store au
• Google Play Console Play

53. Android
•
•
•
•
•

54. •
•
•
•

55. •
• Google Play Console

56. • Beta
10

57. • Android Studio…
• Build.gradle
•
• Google Play Console
•
• ProGuard

58. •
•
• DroidKaigi/conference-app-2017
• JakeWharton/u2020
• Android Developers