Question

I am new to Android. Can you tell me what is a Bundle and how they are used in android?

Answer 1

Bundle generally use for passing data between various Activities. It depends on you what type of values you want to pass but bundle can hold all types of values and pass to the new activity.

You can use it like …

Intent intent = new
Intent(getApplicationContext(),SecondActivity.class);
intent.putExtra("myKey",AnyValue);  
startActivity(intent);

Now you can get the passed values by…

Bundle extras = intent.getExtras(); 
String tmp = extras.getString("myKey");

you can also find more info on android-using-bundle-for-sharing-variables and Passing-Bundles-Around-Activities

Copy from Here.