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Android Libraries: Pros, Cons, & Gotchas
March 22, 2017Ryan Cooke
This is important.
Chet Haase “If that ecosystem is already enabled, what value are we adding by just adding something else to it?”
General tips - Reversibility
General Tips• Unit Test 3rd Party Libraries
• Method Count
• Methods Count
• Dex-method-counts
• Apk-method-count
• Pull out the core of the library
• Popular & Mature Libraries
• Beware of Unusual Approaches
Social LoginFacebook
• Test Users
• Email not guaranteed
• Key hashes
• Review is a pain
• Log errors
Social LoginTwitter • Not very popular <2% • https://support.twitter.com/forms/platform
LinkedIn • Not very popular <2% • Challenging api
Google • Multiple email choices • Design limitations
Login VariousSmart Lock • Great experience ideal case • Not on iOS • Assets.json requires server upload
Networking• Retrofit
• Volley
• OkHttp
• Behind the scenes
• Android 4.4
Networking Debugging - Stetho
Network Debugging - HttpLoggingInterceptor
ImagesPicasso
• Very small library (2.5.2/849)
• Simple to Use
Glide
• Gif support
• Various nice to haves
• Larger (3.7.0/2879)
ImagesTips
• Prefetch on lists
• Memory
• Profile
• Resize
Cloudinary
• largeHeap
• Bytes used = pixel width * pixel height * 4
ARGB_8888 RGB_565
ImagesFresco
• Magic memory cleverness
• Pre-lollipop (api 21)
• Progressive jpg
• Drawees instead of imageViews
Memory - LeaksLeak Canary • Difficult to read • Not easiest to share • Don’t forget to set watchers
WeakHandler
UIActivities Where it all began
Fragments Solution or Problem?
Views Swap content of frame layout
View-Based-ArchitectureMortar + Flow
• MVP
• Lacks solutions to common issues
View-Based-ArchitectureConductor
• Built solving common view based architecture issues
View-Based-ArchitectureScoop
• Limited Transition • Can’t Save State • Most Production Tested
Model View Presenter (MVP)• Mosby
• Tutorial
• ViewState
• Nucleus
• Mortar
• Build it yourself
Testing - Performance - NimbleDroid
Json• Gson
• Jackson
• Moshi
• LoganSquare—compile time work
• Flatbuffer—Json alternative
Database - SQLSQLite
SQLBrite • Reactive • Update with changes
Database - SQLSQLDelight • Work with SQL easier • Organizing sql statements • TypeSafe Api for read/write
ORMs • GreenDAO • OrmLite • DBFlow
Database - NoSQLRealm • Documentation and support • Super Fast
LevelDB • Key-Value pair by Google
Database - NoSQL
Database - Mobile Platform• Firebase
• Realm—offline first
Deeplinking• Services
• Yozio
• Branch
• Firebase Dynamic Links
• App link
• Deep Link Dispatch
Analytics• If you can measure you can optimize
• Wrapping 3rd party tools
• Log screens
• Don’t get lost
• Adding too many
• Untested
• Confusing naming
• Delaying easy decisions
• Finding too large of conclusions
Analytics - Firebase• Underlies all of firebase
• Free
• Actively Improving
Analytics• Google Analytics
• Basic
• Behavior Flow
• Play Store Console—Basic Core Questions
• Answers—Great for the office tv
• Mixpanel—Paid, but very good
• Lots more
A/B Testing• Disclaimer
• Overhyped
• Slow learning
• Great for making bugs
• Services
• Optimizely
• Firebase Remote Config
• Apptimize
• Analytic Service
• Store Listing
Crash Reporting• Play Store
• Misses most crashes
• Occasionally very useful
• Crashlytics—Free
• Bugsnag
• Paid
• Query crashes
• Instabug or Telescope—Easy to report bugs
Push Notifications• GCM/FCM—Not great for marketing people
• Analytic Services
• Firebase Notifications
• Mixpanel
• Push Services
• UrbanAirship
• Kahuna
• AI
Easier• Butterknife—Zelezny
• Hugo
• Dart & Henson
• Retrolambda
Harder (at First)• RxJava
• React to stuff
• Learning curve
• Misused
• Kotlin
• Cleaner code
• Null pointer
• New language
Logging• Logger—pretty logs
• Timber
• Custom logging behavior
• Combined logging options
Camera• Camera Intent • Material Camera—easy to fork • Android Crop
Camera• Camera Intent • Material Camera—easy to fork • Android Crop
Camera• Camera Intent • Material Camera—easy to fork • Android Crop
Thinking Globally• Network Emulation • Emulator • Charles Proxy • Augmented Traffic Control (ATC)
• AutoFitTextView • Year Class—2015 is the max • Connection Class—sampling is wonky
Android–Knit Have lunch with Pinterest Android
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