Android Tutorial

By : Ketan Bhimani

252 

TextView tv = new TextView(this);
Date now = new Date();
tv.setText(“I‟m from a factory. Created: “

• now.toString());
  tv.setTextSize((float) 24);
  return (tv);
  } else {
  return null;
  }}}

This example creates a tabbed layout view with four tabs on it, as

shown in Figure. The first tab is from the recent GridView sample.

The second tab is from the ListView sample before that. The third

tab is the basic layout with two TextView objects, fully defined in an

XML layout file as previously demonstrated. Finally, the fourth tab

is created with a factory.

Four tabs displayed.

The first action is to get the TabHost

instance. This is the object that enables us

to add Intent objects and View identifiers

for drawing the screen. A TabActivity

provides a method to retrieve the current

TabHost object.

The next action is only loosely related to

tab views. The LayoutInflater is used to

turn the XML definition of a View into the

actual View objects. This would normally

happen when calling setContentView(),

but we’re not doing that. The use of the

LayoutInflater is required for referencing

the View objects by identifier, as is done for the third tab.