CountDownTimer Class
Definition
Important
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Schedule a countdown until a time in the future, with regular notifications on intervals along the way.
[Android.Runtime.Register("android/os/CountDownTimer", DoNotGenerateAcw=true)]
public abstract class CountDownTimer : Java.Lang.Object[<Android.Runtime.Register("android/os/CountDownTimer", DoNotGenerateAcw=true)>]
type CountDownTimer = class
inherit Object- Inheritance
- Attributes
Remarks
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:
<div> <div class="ds-selector-tabs"><section><h3 id="kotlin">Kotlin</h3>
object : CountDownTimer(30000, 1000) {
override fun onTick(millisUntilFinished: Long) {
mTextField.setText("seconds remaining: " + millisUntilFinished / 1000)
}
override fun onFinish() {
mTextField.setText("done!")
}
}.start()
</section><section><h3 id="java">Java</h3>
new CountDownTimer(30000, 1000) {
public void onTick(long millisUntilFinished) {
mTextField.setText("seconds remaining: " + millisUntilFinished / 1000);
}
public void onFinish() {
mTextField.setText("done!");
}
}.start();
</section></div></div>
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.
Java documentation for android.os.CountDownTimer.
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.
Constructors
| CountDownTimer(Int64, Int64) | |
| CountDownTimer(IntPtr, JniHandleOwnership) |
A constructor used when creating managed representations of JNI objects; called by the runtime. |
Properties
| Class |
Returns the runtime class of this |
| Handle |
The handle to the underlying Android instance. (Inherited from Object) |
| JniIdentityHashCode | (Inherited from Object) |
| JniPeerMembers | |
| PeerReference | (Inherited from Object) |
| ThresholdClass |
This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. |
| ThresholdType |
This API supports the Mono for Android infrastructure and is not intended to be used directly from your code. |
Methods
| Cancel() |
Cancel the countdown. |
| Clone() |
Creates and returns a copy of this object. (Inherited from Object) |
| Dispose() | (Inherited from Object) |
| Dispose(Boolean) | (Inherited from Object) |
| Equals(Object) |
Indicates whether some other object is "equal to" this one. (Inherited from Object) |
| GetHashCode() |
Returns a hash code value for the object. (Inherited from Object) |
| JavaFinalize() |
Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. (Inherited from Object) |
| Notify() |
Wakes up a single thread that is waiting on this object's monitor. (Inherited from Object) |
| NotifyAll() |
Wakes up all threads that are waiting on this object's monitor. (Inherited from Object) |
| OnFinish() |
Callback fired when the time is up. |
| OnTick(Int64) |
Callback fired on regular interval. |
| SetHandle(IntPtr, JniHandleOwnership) |
Sets the Handle property. (Inherited from Object) |
| Start() |
Start the countdown. |
| ToArray<T>() | (Inherited from Object) |
| ToString() |
Returns a string representation of the object. (Inherited from Object) |
| UnregisterFromRuntime() | (Inherited from Object) |
| Wait() |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>. (Inherited from Object) |
| Wait(Int64, Int32) |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object) |
| Wait(Int64) |
Causes the current thread to wait until it is awakened, typically by being <em>notified</em> or <em>interrupted</em>, or until a certain amount of real time has elapsed. (Inherited from Object) |
Explicit Interface Implementations
| IJavaPeerable.Disposed() | (Inherited from Object) |
| IJavaPeerable.DisposeUnlessReferenced() | (Inherited from Object) |
| IJavaPeerable.Finalized() | (Inherited from Object) |
| IJavaPeerable.JniManagedPeerState | (Inherited from Object) |
| IJavaPeerable.SetJniIdentityHashCode(Int32) | (Inherited from Object) |
| IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates) | (Inherited from Object) |
| IJavaPeerable.SetPeerReference(JniObjectReference) | (Inherited from Object) |
Extension Methods
| JavaCast<TResult>(IJavaObject) |
Performs an Android runtime-checked type conversion. |
| JavaCast<TResult>(IJavaObject) | |
| GetJniTypeName(IJavaPeerable) | |