Increase productivity using Design patterns, Libraries & Tools

Slides from my presentation on, How to increase productivity in Android using Design patterns, Libraries and Tools at,

Mobile Era Oslo Meetup 2016, 2-Nov-2016
- https://www.meetup.com/Mobile-Meetup-Oslo/events/231938661/

List of Libraries and Tools used in the presentation,
RxJava - http://www.github.com/ReactiveX/RxJava
ButterKnife - http://www.github.com/JakeWharton/butterknife
RxBinding - http://www.github.com/JakeWharton/RxBinding
DataBinding - http://www.developer.android.com/topic/libraries/data-binding/index.html
Guava - http://www.github.com/google/guava
ReactiveCache - http://www.github.com/VictorAlbertos/ReactiveCache
Realm - http://www.realm.io
Retrofit - http://www.github.com/square/retrofit
Volley - http://www.developer.android.com/training/volley/index.html
Infer - http://www.github.com/facebook/infer
LeakCanary - http://www.github.com/square/leakcanary
Crashlytics - http://www.fabric.io/kits/android/crashlytics
Hugo - http://www.github.com/JakeWharton/hugo
Setho - https://facebook.github.io/stetho/
Dryrun - http://www.github.com/cesarferreira/dryrun
Methodscount - https://www.methodscount.com/

Transcript

1. Sociomantic Labs MobileEra Meetup Oslo 2016 #mobileEra Viraj Tank @viraj49
3. Consistent code !(Boilerplate code) Early detection Faster diagnosis
4. !!!Disclaimer!!! RxJava Brief Intro
5. Behavioral Design Patterns Testable Organised Consistent Scalable
6. Behavioral Design Patterns MVP MVVM
7. MVP View <=> Presenter Presenter + Subscriptions Presenter + Error handling MVVM View => ViewModel View + Subscriptions View + Error handling Reusable ViewModel 1 Presenter 1 View Behavioral Design Patterns
8. Code Structure Important
9. Binding TextView helloWorldText = (TextView) findViewById(R.id.hello_world_text); Button button = (Button) findViewById(R.id.button); button.setOnClickListener(new OnClickListener() { public void onClick(View v) { /* Some Logic */ } });
10. Butterknife @BindView(R.id.hello_world_text) TextView helloWorldText; @OnClick(R.id.button) void helloWorldTextClick() { /* Some Logic */ }
11. RxBinding RxTextView.textChanges(editText) RxView.clicks(button)
12. Data Binding <layout> <data> <variable name="user" type="com.example.User"/> </data> <LinearLayout> <TextView android:text="@{user.firstName}"/> <EditText android:text="@={user.firstName}"/> </LinearLayout> </layout> MainActivityBinding binding = DataBindingUtil .setContentView(this, R.layout.main_activity); User user = new User("Test", "User"); binding.setUser(user);
13. Data Binding private static class User extends BaseObservable { private String firstName; @Bindable public String getFirstName() { return this.firstName; } public void setFirstName(String firstName) { this.firstName = firstName; notifyPropertyChanged(BR.firstName); } }
14. Cache HashMap Simple Minimal usage Smaller size Boilerplate code Guava Reactive Cache Powerful Data expiry Upper cap on size Massive library Powerful Data expiry Upper cap on size RxJava
15. Database SQLite Battle tested 0 Method counts Relational DB Boilerplate code ORM/Helper Realm Simple & Useful Still SQLite Mega Fast No SQL Easy !(Boilerplate code)
16. Network Volley ~Complex ~Boilerplate code !(RxJava) Retrofit Simple !(Boilerplate code) RxJava
17. Problem Detection Testing Reviews
18. Infer brew install infer infer -- gradle <gradle task, e.g. "build">
19. Leak Canary LeakCanary.install(this);
20. Crashlytics Fabric.with(this, new Crashlytics());
21. Debugging Android Debug Monitor
22. Hugo @DebugLog public String getName(String first, String last) { /* CODE */ return first + " " + last; } V/Example: ⇢ getName(first="Viraj", last="Tank") V/Example: ⇠ getName [16ms] = "Viraj Tank"
23. Stetho Stetho.initializeWithDefaults(this); OkHttpClient okHttpClient = new OkHttpClient(); okHttpClient.networkInterceptors() .add(new StethoInterceptor());
24. Stetho
25. Stetho
26. Stetho
27. Stetho
28. Welcoming A New Library
29. Apk Analyzer
30. dryrun $ gem install dryrun $ dryrun https://github.com/cesarferreira/android-helloworld
31. methodscount.com
32. ProGuard release { minifyEnabled true proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } Reduce Obfuscate Optimize
34. RxJava - github.com/ReactiveX/RxJava ButterKnife - github.com/JakeWharton/butterknife RxBinding - github.com/JakeWharton/RxBinding DataBinding - developer.android.com/topic/libraries/data-binding/index.html Guava - github.com/google/guava ReactiveCache - github.com/VictorAlbertos/ReactiveCache Realm - realm.io Retrofit - github.com/square/retrofit Volley - developer.android.com/training/volley/index.html Infer - github.com/facebook/infer LeakCanary - github.com/square/leakcanary Crashlytics - fabric.io/kits/android/crashlytics Hugo - github.com/JakeWharton/hugo Setho - http://facebook.github.io/stetho/ Dryrun - github.com/cesarferreira/dryrun Methodscount - http://www.methodscount.com/
35. Thanks github.com/viraj49 twitter.com/viraj49