This document discusses various tools that can be used in Android development. It describes build tools like Gradle and build variants. It also covers debugging tools such as Stetho, Hugo, and Pidcat. Metrics and performance tools like LeakCanary, Takt, and AndroidDevMetrics are also mentioned. The document provides links to code analysis tools and testing tools like mock servers. It concludes by recommending choosing the right tools for the job.

1. #mobilization2016
THE 2016 ANDROID
DEVELOPER TOOLBOX

2. @Nilhcem

3. #mobilization2016

4. THE 2016 ANDROID
DEVELOPER TOOLBOX

6. "Use the right tools for the right job"

9. (with the Android Plugin for Gradle)

10. BUILD VARIANTS

11. U+2020
https://github.com/JakeWharton/u2020

12. DEBUG SCREEN
Example from Google iosched

13. INTERNAL SETTINGS APP
Similar to U+2020 Sample app
Display build / device information
Change endpoint (restart process with
)
Show logs ( )
Allow easy bug report capturing
( )
Enable/Disable Takt / Stetho / Scalpel /
Madge...
JakeWharton/ProcessPhoenix
pedrovgs/Lynx
mattprecious/telescope

14. MOBILIZATION 2016 APPLICATION
https://github.com/Nilhcem/mobilization-2016

15. MEASURING TOOLS

16. ANDROID STUDIO
(Android Monitor tab)

18. DETECT MEMORY LEAKS

20. LEAK CANARY
https://github.com/square/leakcanary

21. FRAME RATE
build.gradle:
MyApplication.java:
https://github.com/wasabeef/Takt
compile 'jp.wasabeef:takt:1.0.3'
public class MyApplication extends Application {
@Override public void onCreate() {
super.onCreate();
Takt.stock(this).play();
}
}

22. HUGO
https://github.com/JakeWharton/hugo
Prefix classes/methods with:
@DebugLog
Result:
MobilizationApp V ⇢ onCreate()
V ⇢ initGraph()
V ⇠ initGraph [13ms]
V ⇢ initLogger()
V ⇠ initLogger [1ms]
V ⇠ onCreate [73ms]

23. PIDCAT
https://github.com/JakeWharton/pidcat
$ pidcat com.nilhcem.mobilization

24. ANDROIDDEVMETRICS
build.gradle:
MyApplication.java:
https://github.com/frogermcs/AndroidDevMetrics
apply plugin: 'com.frogermcs.androiddevmetrics'
public class MyApplication extends Application {
@Override public void onCreate() {
super.onCreate();
AndroidDevMetrics.initWith(this);
}
}

25. CODE STATIC ANALYSIS TOOLS
Lint
Error Prone (Google)
Infer (Facebook)

29. SONARQUBE
Dockerfile:
FROM java:8
MAINTAINER Nilhcem
RUN DEBIAN_FRONTEND=noninteractive apt update
RUN DEBIAN_FRONTEND=noninteractive apt install -y wget unzip
RUN wget -q https://sonarsource.bintray.com/Distribution/sonarqube/sonarqube-6.1.zip
RUN unzip -qq sonarqube-6.1.zip -d /opt/
RUN rm sonarqube-6.1.zip
EXPOSE 9000
CMD ["/opt/sonarqube-6.1/bin/linux-x86-64/sonar.sh", "console"]
Then launch:
$ docker build -t nilhcem/sonarqube .
$ docker run -p 9000:9000 -d nilhcem/sonarqube

30. SONARQUBE GRADLE CONFIGURATION
build.gradle:
apply plugin: 'org.sonarqube'
sonarqube {
properties {
def appProject = project(':app')
def appProjectBuildDir = appProject.buildDir
property 'sonar.projectKey', 'mobilization'
property 'sonar.projectName', 'Mobilization 2016'
property 'sonar.projectVersion', appProject.android.defaultConfig.versionName
property 'sonar.host.url', 'http://localhost:9000'
property 'sonar.sources', 'src'
property 'sonar.sourceEncoding', 'UTF-8'
property 'sonar.java.binaries', 'build/intermediates/classes/production/debug'
property 'sonar.java.test.binaries', 'build/intermediates/classes/test/production/debug'
property 'sonar.exclusions', 'src/test/java/**'
property 'sonar.core.codeCoveragePlugin', 'jacoco'
property 'sonar.jacoco.reportPath', "$appProjectBuildDir/jacoco/testProductionDebugUnitTest.exec"
property 'sonar.junit.reportsPath', "$appProjectBuildDir/test-results/testProductionDebugUnitTest/productionDebug"
}
}
Then launch:
./gradlew :app:assembleProductionDebug :app:testProductionDebugUnitTest :app:sonarqube

33. TESTING TOOLS

34. MOCK SERVER

35. NODEJS + EXPRESS
/* Setup */
var fs = require('fs');
var express = require('express');
var app = express();
app.set('port', process.env.PORT || 8080);
var port = app.get('port');
/* Speakers list */
app.get('/speakers', function(req, res) {
res.type('application/json; charset=utf8');
res.status(200).send(fs.readFileSync('data/speakers.json', 'utf8'));
});
/* Other web services */
// ...
/* Starting the server */
app.listen(port, function () {
console.log('Express server listening on port ' + port);
});

36. NODEJS + EXPRESS
Slow service
sleep(2000);
function sleep(durationMillis) {
var now = new Date().getTime();
while (new Date().getTime() < now + durationMillis) {
// do nothing
}
}
// Please do not take pictures of this slide,
// This is not something I am proud of

37. EXAMPLE
Then, go to:
https://github.com/Nilhcem/mobilization-2016
/tree/master/mockserver
$ npm install
$ npm start
http://localhost:8990/

38. HOSTS EDITOR
https://play.google.com/store/apps/details?id=com.nilhcem.hostseditor

39. HTTP DEBUGGING

40. HTTP DEBUGGING
mitmproxy
Fiddler
Charles proxy

41. CHARLES PROXY
Simulate a slow connection
Repeat queries
Check the responses
Add some breakpoints to:
Cancel an HTTP(s) call
Edit a request
Edit a response

42. ANDROID STATE
RESTORING

43. DON'T KEEP ACTIVITIES

44. FILL RAM
https://play.google.com/store/apps/details?id=com.tspoon.androidtoolbelt

45. ANDROID DEVICE MONITOR - STOP PROCESS

46. ANALYZING TOOLS

47. DEVELOPER OPTIONS

50. UIAUTOMATORVIEWER

51. ANIMATIONS
Developer options -> Animation scale

52. ANIMATIONS
Make a screencast (API 19+):
VLC :
$ adb shell screenrecord /sdcard/demo.mp4
$ adb pull /sdcard/demo.mp4
Press the keyboard 'E' key to see
frames one by one

53. APKTOOL + DEX2JAR + JD-GUI
http://ibotpeaches.github.io/Apktool
https://github.com/pxb1988/dex2jar
http://jd.benow.ca

54. JADX
https://github.com/skylot/jadx

55. ANDROID STUDIO
(Build > Analyze APK)

56. STETHO

57. STETHO - UI

58. STETHO - NETWORK

59. STETHO
DUMPAPP

60. STETHO - DUMPAPP

61. SOME MORE DUMPAPP EXAMPLES
$ dumpapp accessToken invalidate
$ dumpapp accessToken show
fce1235425dcdeadbeef8cafebabe42
$ dumpapp clipboard get
Hello
$ dumpapp clipboard set "Text to copy"
$ dumpapp onTrimMemory
$ dumpapp openIntent scheme://open/speaker/3
$ dumpapp gcmToken
uHyMKnEQ:APA91bEHZ6afFLQQMzKgSDjp5y_0397usitPqj_Bp02
$ dumpapp geolocData
Location[fused 22.5430883,114.1043205 acc=21 et=+21m5s492ms]
$ dumpapp runningServices
com.example.LocationService

62. STETHO - CUSTOM PLUGIN
http://code.tutsplus.com/tutorials/debugging-android-apps-with-facebooks-stetho--cms-24205
class AppDumperPlugin implements DumperPlugin {
@Override
public String getName() {
return "my_plugin_name";
}
@Override
public void dump(DumperContext dumpContext) throws DumpException {
PrintStream writer = dumperContext.getStdout();
String commandName = (args.isEmpty()) ? "" : args.remove(0);
if (commandName.equals("test")) {
out.println("Hello, World!");
}
}
}

63. STETHO - CUSTOM PLUGIN

64. STETHO - DUMPAPP (EXAMPLE)
(ActivityProvider in a dependency graph in debug)
@Singleton
public class ActivityProvider implements Application.ActivityLifecycleCallbacks {
private Activity currentActivity;
@Inject
public ActivityProvider(Application app) {
app.registerActivityLifecycleCallbacks(this);
}
public Activity getCurrentActivity() {
return currentActivity;
}
@Override
public void onActivityResumed(Activity activity) {
currentActivity = activity;
}
@Override
public void onActivityPaused(Activity activity) {
currentActivity = null;
}
}

65. STETHO - DUMPAPP (EXAMPLE)
AppDumperPlugin.java
private void displayCurrentSessionData(PrintStream writer) {
Activity activity = activityProvider.getCurrentActivity();
if (activity instanceof SessionDetailsActivity) {
try {
// Use reflection to access private "session" field
Field field = SessionDetailsActivity.class.getDeclaredField("session");
field.setAccessible(true);
Session session = (Session) field.get(activity);
writer.println(new GsonBuilder().setPrettyPrinting().create().toJson(session));
} catch (Exception e) {
writer.println(e.getMessage());
}
}
}

66. $#*!,
I FORGOT THESE TOOLS!

67. ADB + SHELL
# Open a deep linking intent
adb shell am start -a android.intent.action.VIEW -d "scheme://app/deep/linking"
# List running services
adb shell dumpsys activity services
# Get the path of an install application
adb shell pm path app.package.name
# Clear app data
adb shell pm clean app.package.name
# Take a screenshot
adb shell screencap -p | perl -pe '''s/x0Dx0A/x0A/g''' > screen.png
# Paste text from your computer clipboard to your android device
pbpaste | sed "s/%/%%/g" | sed "s/ /%s/g" | xargs adb shell input text

68. POSTMAN
https://www.getpostman.com/

69. LOCKITO
https://play.google.com/store/apps/details?id=fr.dvilleneuve.lockito

70. ACCESSIBILITY SCANNER
https://play.google.com/store/apps/details?id=com.google.android.apps.accessibility.auditor

71. VYSOR
http://www.vysor.io

72. AS A CONCLUSION...

73. CHOOSE ACCORDING
TO YOUR NEEDS AND
TASTES

74. THE 2016 ANDROID
DEVELOPER TOOLBOX

75. (EXAMPLE OF AN)
ANDROID DEVELOPER
TOOLBOX

76. https://twitter.com/Nilhcem
https://github.com/Nilhcem/mobilization-2016
http://www.slideshare.net/Nilhcem/the-2016-android-developer-toolbox-mobilization
MASTER YOUR TOOLS
TO BUILD BETTER APPS