Hi Friends, TextClock is used to show the current time or/and date. In TextClock we use formatted String to show the time or/and date. Basically it is a digital clock added from Api level 17 replacement of DigitalClock. By using this method we get values either getFormat12Hour() or getFormat24Hour().
Is24HourModeEnabled()

Here is the code

Button showTextClock = (Button) findViewById(R.id. button);
showTextClock.setOnClickListener(new OnClickListener() {
@Override public void onClick(View v) {
// TODO Auto-generated method stub
// Defining Text Clock
TextClock textClock = (AnalogClock) findViewById(R.id. my_text_clock);
// Showing Text clock
textclock.setVisibility(View.VISIBLE);
} });
} }

This is the xml file of the Activity

 <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools"
 android:layout_width="match_parent"
android:layout_height="match_parent">
<textclockclock android:id="@+id/my_text_clock" 
android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:visibility="invisible">
<button android:id="@+id/ button" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content"
 android:text="Show Text Clock">
     </button>    
</textclockclock>
     </linearlayout>