New

• How to use GraphQL with Retrofit on Android?
• Dagger on Kotlin
• Kotlin Android Extensions in Adapter

Basic

• Intents
• Services
• Shared-preferences

Communicating between fragment and activity

• Communicating between fragment and activity
• Send data from activity to fragment in android
• Send data from activity to fragment on android II
• Communicating activity with fragments in TabBar
• Listener from fragment to activity

Design Patterns

• MVP => Interesting!
• MVP (Example)
• Singleton
• Listener
• Listener from fragment to activity
• MVC

Paint in layout

• Custom style in CheckBox and RadioButton => Interesting!
• Place in Relative Layout
• Animation image
• PopUp
• Custom fonts
• Add a textview and a button to linear layout programmatically => Interesting!
• Percentage of screen
• Alert Dialog
• Custom theme
• How to prevent a AlertDialog from closing when a button is clicked
• How to put image in Navigation Drawer
• How to take a component position?
• How to move a view on touch move?

Apis

• Twitter
• RoboGuice for dependency injection
• Jira in Android

Libraries

• Retrofit
• Rounded Coners With Glide
• Know your bugs

Map

• Go to google maps app with a address
• How to get coordinates of an address in android

Code Style Guide

• Multiple OnClickListener android
• How to use TextChangedListener android

Audio/Video

• MediaPlayer Audio
• Video MediaPlayer
• Video 360

ScrollView

• Vertical and horizontal scrolling
• Infinitely Scrolling List
• ListView inside ScrollView (See all items)
• ListView inside ScrollView (See only one item)
• Expandable listView inside ScrollView => Interesting!
• Fast Scroll in listView

RecyclerView

• Horizontal ListView on Android
• Multiple choice => New!

Test

• Android SQLite Test
• Android Parameterized Test

Rx Java

• RxJava retrolambda

Write and read in File

• Read XML in Android
• Write XML in Android
• How to read and write from file
• How to read and write JSON from file with Gson
• Generate PDF
• Edit PDF

Important methods

• NotifyDataSetChanged with setTag
• getFragment(position) with setTag
• onSaveInstanceState(Bundle outState)

Intents

• Intents
• Launch an application
• Open PDF

Encryption

• Advanced Encryption Standard (AES)
• Asymmetric Encryption (RSA)

Android Design Support Library

• Tablayout with Android Design Support Library
• How to put image in CollapsingToolbarLayout

Animation between Activities

• Gmail overriding pending transition

Other

• Proximity screen off
• Save and retrieve date
• Data Transfer
• Send data from activity to fragment in android
• Different Languages
• Make an HTTP request
• To avoid multiple button click at same time
• OK – A communication app – I => Interesting!