Intent

Overview –

Intent is an abstract description of an operation to be performed. It can be used with startActivity to launch an Activity, broadcastIntent to send it to any interested BroadcastReceiver components to communicate with a background Service.

For example:- an Activity can send an Intents to the Android system which starts another Activity.

Implicit intents are often used to send message from one activity to in-built android activity. Implicit Intents have not specified a component; instead, They specify the action which should be performed and optionally an URI which should be used for this action.  Here, we do not declare the target component and hence is typically used for activating components of other applications seamlessly.

Simple Program (Tutorial) :-

    Create a new Android application "Implicit Intent" with package name “com.intent.implicit” & a Activity called "ImplicitActivity.java".
     Write following code in  "main.xml" file in the "res/layout" folder. Change the   layout file "main.xml" to the following.

     Write following  java code in “ImplicitActivity.java” file in src/com.intent.implicit” .

    Add following permission in “AndroidManifest.xml” file in “res” folder.

   Explicit intent to an instance of the designated target class Explicit Intents explicitly names the component which should be called by the Android system, by using the Java class as identifier. 

   Simple Program (Tutorial):-

      Create a new Android application “Explicit Intent" with package name “com.intent.explicit” & two activities called "ExplicitActivity.java"  & “Second.java”.

      Write following code in  "main.xml" & “second.xml” file in the "res/layout" folder.

    “main.xml”

“second.xml”

      Write following java code in “ExplicitActivity.java” & “Second.java” files in src/com.intent.explicit” .

I      

“ExplicitActivity.java”

   

“Second.java”

Add/write following code in “AndroidManifest.xml” file in “res” folder.