The second part of the Android dev toolbox lecture, This time we’ll focus on collection of tools and resources that help you build better apps in less time.

1. Android dev
toolbox II
AVGeeks, 2016

2. Shem Magnezi
@shemag8 | shem8.wordpress.com

3. Part 1 Libraries

5. Part 2 Tools

6. Why use external tools?
▣ Same as libraries-
don't reinvent the
wheel.

7. Why not?
▣ Proprietary solutions
(Outsource them,
Everything.me style!)

8. Systrace
Collects system and application process execution data and generates detailed, interactive reports from devices
http://developer.android.com/tools/performance/systrace/index.html

9. Allocation tracking
Monitor where objects are being allocated when you perform certain actions
http://developer.android.com/tools/studio/index.html#alloc-tracker

10. Trace view
Traceview can help you debug your application and profile its performance.
http://developer.android.com/tools/debugging/debugging-tracing.html

11. Hierarchy Viewer
Visualizes your app's view hierarchy and profiles the relative rendering speed for each view.
http://developer.android.com/tools/performance/hierarchy-viewer/index.html

12. Developer options
Realtime on device debugging.
http://developer.android.com/tools/device.html

13. Hugo
Annotation-triggered method call logging for your debug builds.
@DebugLog
public String getName(String first, String last) {
SystemClock.sleep(15); // Don't ever really do this!
return first + " " + last;
}
https://github.com/JakeWharton/hugo
V/Example: ⇢ getName(first="Jake", last="Wharton")
V/Example: ⇠ getName [16ms] = "Jake Wharton"

14. Leak Canary
A memory leak detection library for Android and Java.
public class ExampleApplication extends Application {
@Override public void onCreate() {
super.onCreate();
LeakCanary.install(this);
}
}
https://github.com/square/leakcanary

15. Phone Home
Standalone library that sends logs from remote Android devices to a central server for debugging.
PhoneHomeConfig.getInstance()
// enable or disable log flushing
.enabled(false)
// wait for this many log events before flushing ...
.batchSize(100)
// ... or until this many seconds have passed between flushes
.flushIntervalSeconds(1800)
// when developing, log all messages to logcat, then flush everything to the sink
.debugLogLevel(android.util.Log.VERBOSE)
// in production, only log INFO messages and above to logcat, then flush everything to the sink
.productionLogLevel(android.util.Log.INFO)
// specify the sink that receives flushed logs. Required if you enable log flushing
.logSink(new PhoneHomeSink() {
public void flushLogs(final List<PhoneHomeLogEvent> logEvents) {
// flush log events to your backend
}
});
https://github.com/nebulabsnyc/PhoneHome

16. Probe
Android applications performance testing tool.
python console.py --package your.package.name
--activity TheActivityToRunProbeOn --repeat-count x --
timeout y
https://github.com/EverythingMe/probe

17. Magneto
Magneto allows you to write smart and powerful tests for Android apps.
http://getmagneto.com/

18. Monkey testing
adb shell monkey -p your.package.name -v 500
http://developer.android.com/tools/help/monkey.html
The Monkey is a program that runs on your emulator or device and generates pseudo-random streams of user
events such as clicks, touches, or gestures, as well as a number of system-level events. You can use the
Monkey to stress-test applications that you are developing, in a random yet repeatable manner.

19. Stetho
A debug bridge for Android applications
http://facebook.github.io/stetho/

20. Espresso
APIs for writing UI tests to simulate user interactions within a single target app.
@Test
public void changeText_sameActivity() {
// Type text and then press the button.
onView(withId(R.id.editTextUserInput))
.perform(typeText(mStringToBetyped), closeSoftKeyboard());
onView(withId(R.id.changeTextBt)).perform(click());
// Check that the text was changed.
onView(withId(R.id.textToBeChanged))
.check(matches(withText(mStringToBetyped)));
}
http://developer.android.com/training/testing/ui-testing/espresso-testing.html

21. Robolectric
A unit test framework that de-fangs the Android SDK jar so you can test-drive the development of your Android
app
@RunWith(RobolectricTestRunner.class)
public class MyActivityTest {
@Test
public void clickingButton_shouldChangeResultsViewText() throws Exception {
MyActivity activity = Robolectric.setupActivity(MyActivity.class);
Button button = (Button) activity.findViewById(R.id.button);
TextView results = (TextView) activity.findViewById(R.id.results);
button.performClick();
assertThat(results.getText().toString()).isEqualTo("Robolectric Rocks!");
}
}
http://robolectric.org/

22. Part 3 Resources

23. Android Arsenal
http://android-arsenal.com/

24. Droid Toolbox
http://droid-toolbox.com/

25. MaterialUp
http://www.materialup.com/

26. Android For Devs
http://www.android4devs.com/

27. Android library statistics (By Appbrain)
http://www.appbrain.com/stats/libraries

28. Android Developers Blog
http://android-developers.blogspot.co.il/

29. Google Developers @Medium
https://medium.com/google-developers

30. The developer show
https://www.youtube.com/playlist?

31. Android Weekly
http://androidweekly.net/

32. Part 4 People

33. Nick Butcher
Design/Developer Advocate @ Google
@crafty
Chet Hasse
Android animator @ Google
@chethaase
Chiu-Ki Chan
Android developer, public speaker
@chiuki
Romain Guy
Working on awesome stuff at Google
@romainguy
Roman Nurik
Designer @ Google
@romannurik
Kelly Shuster
Android Engineer, Public speaker &
tech diversity advocate.
@kellyshuster

34. Ian Lake
Developer Advocate @ Google
@ianhlake
Joanna Smith
Developer Advocate @ Google
@dontmesswithjo
Yigit Boyar
UI toolkit team @Android/ Google
@yigitboyar
Lisa Wray
Android @ Genius (prev Google & NYT)
@lisawrayz
Jake Wharton
open source practitioner and contributor, @square
@jakewharton
Colt McAnlis
Developer Advocate @ Google
@duhroach

35. Thanks!
Any questions?
You can find this presentation at:
shem8.wordpress.com
smagnezi8@gmail.com
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