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Added in API level 1

Summary: Ctors | Methods | Inherited Methods | [Expand All]

CountDownTimer

public abstract class CountDownTimer
extends Object

java.lang.Object
↳	android.os.CountDownTimer

Schedule a countdown until a time in the future, with regular notifications on intervals along the way. Example of showing a 30 second countdown in a text field:

 new CountDownTimer(30000, 1000) {

     public void onTick(long millisUntilFinished) {
         mTextField.setText("seconds remaining: " + millisUntilFinished / 1000);
     }

     public void onFinish() {
         mTextField.setText("done!");
     }
  }.start();

The calls to onTick(long) are synchronized to this object so that one call to onTick(long) won't ever occur before the previous callback is complete. This is only relevant when the implementation of onTick(long) takes an amount of time to execute that is significant compared to the countdown interval.

Summary

Public constructors
`CountDownTimer(long millisInFuture, long countDownInterval)`

Public methods
`final void`	`cancel()` Cancel the countdown.
`abstract void`	`onFinish()` Callback fired when the time is up.
`abstract void`	`onTick(long millisUntilFinished)` Callback fired on regular interval.
`final CountDownTimer`	`start()` Start the countdown.

Inherited methods

From class java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long millis, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long millis)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Public constructors

CountDownTimer

Added in API level 1

CountDownTimer (long millisInFuture, 
                long countDownInterval)

Parameters
`millisInFuture`	`long`: The number of millis in the future from the call to `start()` until the countdown is done and `onFinish()` is called.
`countDownInterval`	`long`: The interval along the way to receive `onTick(long)` callbacks.

Public methods

cancel

Added in API level 1

void cancel ()

Cancel the countdown.

onFinish

Added in API level 1

void onFinish ()

Callback fired when the time is up.

onTick

Added in API level 1

void onTick (long millisUntilFinished)

Callback fired on regular interval.

Parameters
`millisUntilFinished`	`long`: The amount of time until finished.

start

Added in API level 1

CountDownTimer start ()

Start the countdown.

Returns
`CountDownTimer`