Tuesday, June 27, 2017

Android Launch Mode

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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.


gallerystandardl2An 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

Tuesday, June 20, 2017

Thursday, June 15, 2017

Android N changes

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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

Friday, June 9, 2017

Friday, May 19, 2017

Whats new in Android O for developer

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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.









Monday, May 8, 2017

Sharing the multiple content between two applications

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As we all know there are ways to share the content between the applications,
Sending and Receiving the data between two application with intent is most commonly used methodology.

 Method to share text/plain
Intent sendIntent = new Intent();
sendIntent.setAction(Intent.ACTION_SEND);
sendIntent.putExtra(Intent.EXTRA_TEXT, "This is my text to send.");
sendIntent.setType("text/plain");
startActivity(sendIntent);
In the above case user first need to set action to send, using putExtra function one can specify the content which user would like to share with other apps,
using setType function use can set type of content ex: text/plain, image/jpeg,

Share multiple pieces of content 

To share multiple pieces of data, android has given inbuilt function parcelableArraylist wherein user can form list uri and put into parcelableArraylist and can start intent to share data over other apps
ArrayList<Uri> imageUris = new ArrayList<Uri>();
imageUris.add(imageUri1); // Add your image URIs here
imageUris.add(imageUri2);
Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND_MULTIPLE);
shareIntent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, imageUris);
shareIntent.setType("image/*");
startActivity(Intent.createChooser(shareIntent, "Share images to.."));

Sample code:

Wednesday, April 26, 2017