Android handout 2-timer component chronometer

// Obtain the timer component
Final chronometer CH = (chronometer) findviewbyid (R. Id. test );

// Set the start time. Note that elapsedrealtime () is mostly used to calculate the time interval, and will continue to work in sleep mode.
Ch. setbase (systemclock. elapsedrealtime ());
// Start the timer
Ch. Start ();

// Listen for timer changes

Ch. setonchronometerticklistener (New onchronometerticklistener ()
{
@ Override
Public void onchronometertick (chronometer ch)
{
// If the time has exceeded 20 s since the start of the timer.
If (systemclock. elapsedrealtime ()-ch. getbase ()> 20*1000)
{

// Stop the timer
Ch. Stop ();
}
}
});