JUnit

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Data Binding Library

Data binding library are used to write declarative layouts and minimise the glue code necessary to bind your application logic and layouts.


Before start integration data binding, I would like to tell the some advantages of library.

Advantages of data binding library :

• Offers flexibility and broad compatibility
  
  
• Its a support library so we can use it with all android platforms
  
  
• Removes the boiler plate code
• Stronger readability 

librar

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Android Launch Mode

Basically we could assign launch mode directly as an attribute of an
 <activity>  tag inside AndroidManifest.xml Manifest file list:

<activity android:name=".SplashScreen"   
          android:configChanges="orientation|keyboardHidden|screenSize" 
          android:label="@string/app_name"   
          android:launchMode="standard" 
          android:screenOrientation="portrait"    

          android:theme="@android:style/Theme.Light.NoTitleBar.Fullscreen" >
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>

There are 4 types of launch modes. Let c one by one.
An example of this kind of Activity is a Compose Email Activity or a Social Network's Status Posting Activity. If you think about an Activity that can work separately to serve an separate Intent, think about standard one.

standard

This is the default mode.
The behaviour of the activity set to this mode is a new activity will always be created to work separately with each intent sent.


An example of this kind of activity is a Compose an Email Activity or a Social Network's status Posting activity.  If you think about an activity that can work separately to serve an separate Intent, think about standard one.

singleTop

The next launch which appears when you hit control+space is singleTop,





It acts almost same as standard one which means that singleTop Activity instance could be created as many as we want. Only difference is if there already is an Activity instance with same type at the top of stack in the caller task, There would not be any new activity created, instead an intent will be sent an existing activity instance through onNewIntent(); Method

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Android Code Optimisation tools & other libraries

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Android N changes

PERMISSIONS (To be given runtime of application) supports heigher verisons of phone >23.0	PERMISSIONS (To be given in app Manifest) supports older version <23.0
STORAGE Used for runtime permissions related to the shared external storage.	android.permission.INTERNET
CAMERA Used for permissions that are associated with accessing camera or capturing images/video from the device.	android.permission.CAMERA
CONTACT Used for runtime permissions related to contacts and profiles on this device.	android.permission.RECORD_AUDIO
LOCATION Used for permissions that allow accessing the device location.	android.permission.MODIFY_AUDIO_SETTINGS
MICROPHONE Used for permissions that are associated with accessing microphone audio from the device.	android.permission.BODY_SENSORS
PHONE Used for permissions that are associated telephony features.	(GCM requires a Google account) android.permission.GET_ACCOUNTS
SENSORS Used for permissions that are associated with accessing camera or capturing images/video from the device.	(Keeps the processor from sleeping when a message is received) android.permission.WAKE_LOCK
SMS Used for runtime permissions related to user's SMS messages.	(This app has permission to register and receive data message) com.google.android.c2dm.permission.RECEIVE
	android.permission.ACCESS_NETWORK_STATE
	android.permission.VIBRATE
	android.permission.READ_PHONE_STATE
	android.permission.ACCESS_FINE_LOCATION
	android.permission.SEND_SMS
	android.permission.CALL_PHONE
	android.permission.WRITE_EXTERNAL_STORAGE
	android.permission.RECEIVE_SMS
	android.permission.READ_CALENDAR android.permission.WRITE_CALENDAR

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Get started with Kotlin

Kotlin is newly introduced 

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Whats new in Android O for developer

From recent I/O 2017 some of the features which Google has brought are to the developers.

1. Pictures in Pictures
   If you have already declared the  configChanges="true" than you don't have to mention  supportsPictureInPicture="true"
     
2. Color Management 
   Support for wide-gamut displays
   16-bit PNG, ICC profiles PNG/Webp/JPEG
   color accurate rendering of bitmaps
   
   New utilities color
3. Multi-DisplayMulti-display = Multi-Window
   user controlled or app controlled  with ActivityOptions
   Test Configuration Changes
4. Media ......Continued.....
   
5. Kotlin new programming language introduce, quite similar to JAVA, just with optimised syntax.
   
   
   
   
   
   
   
   
   

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