The 2015 Android Developer Toolbox

#droidconpl2015

@Nilhcem

Gau$er Mechling

Android So)ware Cra)sman

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happnFind the people you've crossed paths with.

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?#droidconpl2015

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"Use the right tool for the right job"

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Measuring

Tes$ng

Analyzing

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MeasuringTes$ng

Analyzing

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Measuring• You do not Op+mize without measuring.

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Measuring

• The first rule of Op0miza0on Club is, you do not Op0mize1

1 h$p://www.perlmonks.org/?node_id=962631

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Android Studio(Android Monitor tab)

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Memory analysis

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Android Studio

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Frame Rateh"ps://github.com/wasabeef/Takt

compile 'jp.wasabeef:takt:1.0.2'

public class MyApplication extends Application { @Override public void onCreate() { super.onCreate(); Takt.stock(this).play(); }}

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Hugoh"ps://github.com/JakeWharton/hugo

Prefix classes/methods with:

@DebugLog

Result:

BBLApplication V ⇢ onCreate()

V ⇢ initLogger()

V ⇠ initLogger [1ms]

V ⇢ initGraph()

V ⇠ initGraph [16ms]

V ⇠ onCreate [71ms]

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Pidcath"ps://github.com/JakeWharton/pidcat

$ pidcat pl.droidcon.app

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#PerfMa(ers#droidconpl2015

#PerfMa(ersactually...

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#QualityMa*ers

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Code sta)c analysis tools

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Code sta)c analysis tools• Lint

• PMD

• Checkstyle

• Findbugs

• Facebook's infer

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SonarQube

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Dockerfile

FROM java:8MAINTAINER Nilhcem

RUN DEBIAN_FRONTEND=noninteractive apt updateRUN DEBIAN_FRONTEND=noninteractive apt install -y wget unzipRUN wget -q https://sonarsource.bintray.com/Distribution/sonarqube/sonarqube-5.2.zipRUN unzip -qq sonarqube-5.2.zip -d /opt/RUN rm sonarqube-5.2.zip

EXPOSE 9000EXPOSE 9092

CMD ["/opt/sonarqube-5.2/bin/linux-x86-64/sonar.sh", "console"]

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Gradle

apply plugin: 'org.sonarqube'

sonarqube { properties { def appProject = project(':app') def appProjectDir = appProject.projectDir def appProjectBuildDir = appProject.buildDir

property 'sonar.projectKey', 'my-app' property 'sonar.projectName', 'Android app' property 'sonar.projectVersion', appProject.android.defaultConfig.versionName

property 'sonar.host.url', 'http://docker:9000' property 'sonar.jdbc.url', 'jdbc:h2:tcp://docker:9092/sonar' property 'sonar.jdbc.username', 'sonar' property 'sonar.jdbc.password', 'sonar'

property 'sonar.sources', 'src' property 'sonar.sourceEncoding', 'UTF-8' property 'sonar.java.binaries', 'build'

property 'sonar.core.codeCoveragePlugin', 'jacoco' property 'sonar.junit.reportsPath', "$appProjectBuildDir/test-results/prodDebug" property 'sonar.jacoco.reportPath', "$appProjectBuildDir/jacoco/testProdDebugUnitTest.exec" }}

./gradlew :app:assembleProdDebug :app:testProdDebug :app:sonarqube

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Measuring

Tes$ngAnalyzing

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Mock Server

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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');

/* User web service */app.get('/api/users', function(req, res) { res.type('application/json; charset=utf8'); res.status(200).send(fs.readFileSync('data/users.json', 'utf8'));});

/* Other web services */// ...

/* Starting the server */app.listen(port, function () { console.log('Express server listening on port ' + port);});

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Examples

h"ps://github.com/Nilhcem/droidcon-2015-mobile-app/tree/toolbox/mockserver

or

h"ps://github.com/Nilhcem/xebia-android-hp/tree/master/mockserver$ npm install$ node server.js

Then, go to http://localhost:$PORT/#droidconpl2015

Gradle configura.onproductFlavors { production { buildConfigField 'String', 'WS_ENDPOINT', '"http://www.your_server.com/"' }

mock { buildConfigField 'String', 'WS_ENDPOINT', '"http://${mock_server_ip}:${mock_server_port}/"' }}

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Hosts Editor

h"ps://play.google.com/store/apps/details?id=com.nilhcem.hostseditor

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HTTP Debugging

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HTTP Debugging• mitmproxy

• Fiddler

• Charles proxy

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Charles Proxy

• Simulate a laggy/unstable connec3on

• Repeat queries

• Check the responses

• Add some breakpoints to

• Cancel an HTTP(s) call

• Edit a request

• Edit a response

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Cancel a request

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Edit a response + Simulate slow connec4on

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MeasuringTes$ng

Analyzing#droidconpl2015

Developer Op*ons

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hierarchyviewer 2

$ export ANDROID_HVPROTO=ddm$ exec ${ANDROID_HOME}/tools/monitor

2 Documenta,on: h/ps://developer.android.com/tools/performance/hierarchy-viewer/setup.html#hvproto-variableh/p://developer.android.com/tools/debugging/debugging-ui.html

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Hierarchy viewer

Pro$p from +EvelioTarazonaCáceres

@ViewDebug.ExportedProperty(category="avatar")private String mLastUrl;

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uiautomatorviewer

$ exec ${ANDROID_HOME}/tools/uiautomatorviewer

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Anima&ons

Developer op)ons -> Anima)on scale

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Anima&ons

Make a screencast:

$ adb shell screenrecord /sdcard/demo.mp4$ adb pull /sdcard/demo.mp4

VLC :

Press the keyboard E key to see frames one by one

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apktool + dex2jar + JD-GUIh"p://ibotpeaches.github.io/Apktool

h"ps://github.com/pxb1988/dex2jar

h"p://jd.benow.ca

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jadxh"ps://github.com/skylot/jadx

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Stetho

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Stetho - UI

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Stetho - Network

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Stetho - Resources

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Stetho - Dumpapp

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Stetho - Dumpapp

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Stetho - Custom pluginh"p://code.tutsplus.com/tutorials/debugging-android-apps-with-facebooks-stetho--cms-24205

class AppDumperPlugin implements DumperPlugin { @Override public String getName() { return "my_plugin"; }

@Override public void dump(DumperContext dumpContext) throws DumpException { PrintStream writer = dumperContext.getStdout(); String commandName = (args.isEmpty()) ? "" : args.remove(0);

if ("test".equals(commandName)) { out.println("Hello, World!"); } }}

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Stetho - Custom plugin

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Stetho - Dumpapp (example)(ActivityProvider in a dependency graph in debug)

@Singletonpublic class ActivityProvider implements Application.ActivityLifecycleCallbacks {

private Activity mCurrentActivity;

@Inject public ActivityProvider(Application app) { app.registerActivityLifecycleCallbacks(this); }

public Activity getCurrentActivity() { return mCurrentActivity; }

@Override public void onActivityResumed(Activity activity) { mCurrentActivity = activity; }

@Override public void onActivityPaused(Activity activity) { mCurrentActivity = null; }}

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Stetho - Dumpapp (example)

AppDumperPlugin.java

private void doProfileData(PrintStream writer) { Activity activity = mActivityProvider.getCurrentActivity(); if (activity instanceof ProfileActivity) { try { // Use reflection to access private "mUser" field Field field = ProfileActivity.class.getDeclaredField("mUser"); field.setAccessible(true); UserModel user = (UserModel) field.get(activity); writer.println(new GsonBuilder().setPrettyPrinting().create().toJson(user)); } catch (Exception e) { writer.println(e.getMessage()); } }}

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Sample appCheckout the commit history for an implementa4on of all those tools

(Takt, Hugo, SonarQube, Mock Server, Stetho /w realm/dumpapp)in the droidcon PL app:

hFps://github.com/Nilhcem/droidcon-2015-mobile-app/tree/toolbox

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Measuring

Tes$ng

Analyzing

#droidconpl2015

Measuring

Tes$ng

Analysing

Also...

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DevDrawerh"ps://play.google.com/store/

apps/details?id=com.owentech.DevDrawer

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Vysorh"p://www.vysor.io/

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Leak Canaryh"ps://github.com/square/leakcanary

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Genymo'onh"ps://www.genymo/on.com

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Postmanh"ps://www.getpostman.com/

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AirDroidh"ps://www.airdroid.com/

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Lockito

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ViewInspectorh"ps://github.com/xfumihiro/ViewInspector

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U+2020h"ps://github.com/JakeWharton/u2020

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Methodscount

h"p://www.methodscount.com/h"ps://twi"er.com/dmarcato/status/672487137204297728/photo/1

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As a conclusion...

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Choose according to your needs and tastes

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The 2015 Android Developer Toolbox

#droidconpl2015

(Example of an)Android Developer Toolbox

#droidconpl2015

Master your tools

to build be*er apps

❤

h"ps://twi"er.com/Nilhcem

h"ps://plus.google.com/+Gau2erMechling

h"ps://www.happn.com#droidconpl2015