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How to know the call state in Android

Android provide us the facility to know the call state. Android gives this feature by providing Telephonymanager class. We need to implement PhoneStateListener interface that has one method onCallStateChanged(). Below is the example. publ...

Add Dynamic Layout in Android

Generally we add layout from xml but sometimes we need to add layout using java. Here I am adding linear layout from java file. I am creating LinearLayout class which is provided by Android and add params on it. We have methods to set orientation...

Logging in android

A very nice system is use for logging in android, usually called a centralized system. Developer can filter log statements by using android tools. We can create log statements by using android.util.Log class. Log class have so many methods l...

Generate SHA1 Key in android

In android we need to generate SHA1 key fingerprint to get Google Api key for Google Map. It just a one line command to generate SHA1 key. First of all create your .keystore file and sign to your app and take down this keystore lo...

Check Network Availability on android

We know that It’s not possible that our android device should be always connected with a network. It might be a situation when we would not connected with any network, So to check it whether we are connected with any network or not. We chec...

Custom Toast in Android

Android give facility to change the view of a Toast. Sometimes we need to show message on a better way to user . Here I am writing code to implement custom Toast. I make a separate layout for Toast . Here I am showing a ImageView and TextVie...

Scan Wifi networks in your App

Android give facility to access the Wifi Network in your Application. You can access nearly every information of the connection. Android have WifiManager API to handle all Wifi Connectivity.You can use it like this: WifiManager wifiManagerO...

Run Multiple AsyncTask on a Single Time

In android, thread pool pattern is use in AsyncTask. Early the size of the pool was 1 i.e, there was no support for parallel bunching of AsyncTasks.But from HONEYCOMB version Android allows multiple Asynctask at a time. We just have to use...
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