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Jayavelu Viswanathan
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why we need to onUpgrade() method in SQLiteOpenHelper class?
onUpgrade is basically for handling new db changes (could be new columns addition,table addition) for any new version app. Draping the table is not always necessary in on Upgrade it all depends on what your use case is. if the requirement is to not to persi...

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What Handler and AsyncTask really help you with in Android?
If you see source code of AsyncTask and Handler, you will see their code purely in Java. (of course, there some exceptions, but that is not an important point). What does it mean ? It means no magic in AsyncTask or Handler. They just make your job easier as...

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what's the difference between ACCESS_COARSE_LOCATION and ACCESS_FINE_LOCATION.
ACCESS_COARSE_LOCATION is network based location access meaning the
location is by your network, it could work with buildings or underground
trains as long as you have access to your network while
ACCESS_FINE_LOCATION is using gps thus your phone needs t...

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Location updates in android
<manifest ... >     <uses-permission android:name = "android.permission.ACCESS_FINE_LOCATION" />     ... </manifest>     If you are using both NETWORK_PROVIDER and GPS_PROVIDER , then you need to request  only the ACCESS_FINE_LOCATION permission, because it...

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New Admob Installation:Google Play Services for Monetization
Recently Google announced that their Ad program for Android device
Admob leaves old Admob SDK and moving to new Admob with Google Play
Services package. Obsolete Admob publishers will not get impressions if
don’t move to the new Admob with Play service. ...

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Multiple APK Upload into Same Application in Android
Multiple APK Support Quickview     Simultaneously publish different APKs for different device configurations     You should publish multiple APKs only when it's not possible to support all desired devices with a single APK Multiple APK support is a feature ...

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Publishing multiple APK in Google play for Single Application

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Android: startActivity and startActivityForResult
Here are some differences between startActivity and startActivityForResult 1. startActvity will start the activity you want to start without
worrying about getting any result from new child activity started by
startActivity to parent activity. 2. startAci...

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Publishing multiple APK
An application indicates the screen sizes that it is capable of supporting by setting attributes of the <supports-screens> element. When the application is published, Google Play uses those attributes to determine whether to show the application to users, b...
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