TOOLS OF THE TRADE Hello! I AM ZARAH I am an Android developer - PowerPoint PPT Presentation

TOOLS OF THE TRADE

Hello! I AM ZARAH I am an Android developer for Domain.com.au

THE KEY Know available tools

THE KEY Know available tools There is no “correct” setup

CODE

FRAGMENTS

FRAGMENT LIFECYCLE FragmentManager. enableDebugLogging (true);

SERVICES

SERVICES @Override public void onCreate() { super.onCreate(); android.os.Debug. waitForDebugger (); // Do stuff in your service Log. d ("MyService", "I am inside the service!"); }

SERVICES @Override public void onCreate() { super.onCreate(); android.os.Debug. waitForDebugger (); // Do stuff in your service Log. d ("MyService", "I am inside the service!"); }

SERVICES ◦ Put a breakpoint AFTER the call to wait

SERVICES ◦ Put a breakpoint AFTER the call to wait ◦ Edit your Run Configurations

SERVICES ◦ Trigger service

SERVICES ◦ Trigger service ◦ Attach debugger <service android:name="com.myapp.MySyncService" android:exported="true" android:process=":sync" >

BUILT-IN TOOLS

DEBUGGER

DEBUGGER Say NO! to the green bug

DEBUGGER Say NO! to the green bug Create a new keyboard shortcut for Attach Debugger to Android Process

DEBUGGER Say NO! to the green bug Create a new keyboard shortcut for Attach Debugger to Android Process Preferences > Keymap > Main Menu > Run > Attach Debugger to Android Process > Right Click > Add Keyboard Shortcut

DEBUGGER Say NO! to the green bug Create a new keyboard shortcut for Attach Debugger to Android Process AIN’T NOBODY GOT TIME FOR Preferences > Keymap > Main Menu > Run > Attach Debugger to Android Process > Right Click > Add Keyboard Shortcut THAT!

DEBUGGER

DEBUGGER Run then Attach

BREAKPOINTS

BREAKPOINTS

BREAKPOINTS (AN ASIDE)

BREAKPOINTS

BREAKPOINTS Stop during interesting iterations

BREAKPOINTS Suspend on exceptions

BREAKPOINTS If you have a bunch of breakpoints related to a particular bug, GROUP THEM

DEBUG TOOL WINDOW

DEBUG TOOL WINDOW

FRAMES

VARIABLES

VARIABLES

EVALUATING EXPRESSIONS

WATCHES

WATCHES ◦ Add variables and expressions ◦ Resolved in the context of the current frame

WATCHES ◦ Add variables and expressions ◦ Resolved in the context of the current frame

WATCHES

WATCHES

WATCHES

WATCHES ◦ No need to Timber/Toast/Log

WATCHES ◦ No need to Timber/Toast/Log ◦ Like evaluated expressions, but lots of them

WATCHES ◦ No need to Timber/Toast/Log ◦ Like evaluated expressions, but lots of them ◦ Persistent across sessions

WATCHES ◦ No need to Timber/Toast/Log ◦ Like evaluated expressions, but lots of them ◦ Persistent across sessions ◦ Change expressions on the fly Do even more: IntelliJ blog

SYSTEM INFORMATION

SYSTEM INFORMATION Info dump of system state

SYSTEM INFORMATION

SYSTEM INFORMATION Activity Manager State Activity lifecycle state Config values Fragments and their states View hierarchy Choreography state Looper state

SYSTEM INFORMATION Activity Manager Package Info State Manifest information Activity lifecycle state APK info Config values User install info Fragments and their states View hierarchy Choreography state Looper state

SYSTEM INFORMATION Activity Manager Package Info Memory Usage State Manifest information Memory allocations Activity lifecycle state APK info Asset allocations Config values User install info Fragments and their states View hierarchy Choreography state Looper state

SYSTEM INFORMATION Memory Usage over Time Runtime stats Memory usages Low level info

SYSTEM INFORMATION Memory Usage Graphics State over Time How well animations are Runtime stats doing Memory usages Cache info Low level info View hierarchy

LAYOUT INSPECTOR

LAYOUT INSPECTOR

THIRD PARTY TOOLS

HUGO Annotation-based = EASY

HUGO Annotation-based = EASY Shows method calls++ 9477-9477/io.plaidapp V/DataManager: ⇢ sourceLoaded(data=[Redraw Keyboard, Saas 01, Air Traveller App, Become a driver], page=2, key="DRIBBBLE_QUERY_Material Design") 9477-9477/io.plaidapp V/DataManager: ⇠ sourceLoaded [0ms] = true https://github.com/JakeWharton/hugo

HUGO (AN ASIDE) logm live template

ADB PLUGIN App actions from within Studio

ADB PLUGIN No fussing with Settings https://github.com/pbreault/adb-idea

STETHO Wealth of options

STETHO Wealth of options ◦ DB inspection

STETHO Wealth of options ◦ DB inspection ◦ SharedPreferences

STETHO Wealth of options ◦ DB inspection ◦ SharedPreferences ◦ Network inspection

STETHO Wealth of options ◦ DB inspection ◦ SharedPreferences ◦ Network inspection ◦ View hierarchy

STETHO Wealth of options ◦ DB inspection ◦ SharedPreferences ◦ Network inspection ◦ View hierarchy ◦ dumpapp

STETHO Source: Facebook http://facebook.github.io/stetho/

PIDCAT Logcat with less pain

PIDCAT Logcat with less pain https://github.com/JakeWharton/pidcat

LEAK CANARY

LEAK CANARY Source: Square https://github.com/square/leakcanary

Some practical stuff

STUDIO IS BEING WEIRD Cannot add breakpoint

STUDIO IS BEING WEIRD Cannot add breakpoint ADB cannot see devices

STUDIO IS BEING WEIRD First aid

STUDIO IS BEING WEIRD First aid ◦ Unplug then re-plug device

STUDIO IS BEING WEIRD First aid ◦ Unplug then re-plug device ◦ Disable then re-enable ADB integration

STUDIO IS BEING WEIRD First aid ◦ Unplug then re-plug device ◦ Disable then re-enable ADB integration ◦ Invalidate caches and restart

STUDIO IS BEING WEIRD First aid ◦ Unplug then re-plug device ◦ Disable then re-enable ADB integration ◦ Invalidate caches and restart ◦ Disable the re-enable USB debugging on device

But I really don’t want to do all that...

BETTER CODING, (HOPEFULLY) LESS DEBUGGING Use support annotations

BETTER CODING, (HOPEFULLY) LESS DEBUGGING Use support annotations Listen to Lint

BETTER CODING, (HOPEFULLY) LESS DEBUGGING Use support annotations Listen to Lint Use AppCompat methods

ADDITIONAL RESOURCES Philippe Breault [Twitter] Jake Wharton [Github] Square [Github]

Thank you! ANY QUESTIONS? THANK YOU! www.zdominguez.com +ZarahDominguez @zarahjutz

APPENDIX

SUPPORT ANNOTATIONS Add the dependency** dependencies { compile 'com.android.support:support-annotations:24.2.0' }

SUPPORT ANNOTATIONS Profit private void setThingsToTextView(int res1, int res2, int res3, int res4) { // do stuff } private void setThingsToTextView(@IdRes int textView, @StringRes int introText, @DrawableRes int heroImage, @ColorRes int backgroundColour) { // do stuff }

SYSTEM INFORMATION Activity Manager State

SYSTEM INFORMATION Package Information

SYSTEM INFORMATION Memory Usage

SYSTEM INFORMATION Memory Usage over time

SYSTEM INFORMATION Graphics state