TaskStackBuilder Class
Definition
Important
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Utility class for constructing synthetic back stacks for cross-task navigation on Android 3.0 and newer.
[Android.Runtime.Register("android/app/TaskStackBuilder", DoNotGenerateAcw=true)]
public class TaskStackBuilder : Java.Lang.Object[<Android.Runtime.Register("android/app/TaskStackBuilder", DoNotGenerateAcw=true)>]
type TaskStackBuilder = class
inherit Object- Inheritance
- Attributes
Remarks
Utility class for constructing synthetic back stacks for cross-task navigation on Android 3.0 and newer. In API level 11 (Android 3.0/Honeycomb) the recommended conventions for app navigation using the back key changed. The back key's behavior is local to the current task and does not capture navigation across different tasks. Navigating across tasks and easily reaching the previous task is accomplished through the "recents" UI, accessible through the software-provided Recents key on the navigation or system bar. On devices with the older hardware button configuration the recents UI can be accessed with a long press on the Home key.
When crossing from one task stack to another post-Android 3.0, the application should synthesize a back stack/history for the new task so that the user may navigate out of the new task and back to the Launcher by repeated presses of the back key. Back key presses should not navigate across task stacks.
TaskStackBuilder provides a way to obey the correct conventions around cross-task navigation.
Android reference for android.app.TaskStackBuilder.
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
| Name | Description |
|---|---|
| TaskStackBuilder(IntPtr, JniHandleOwnership) |
Initializes a managed representation of an existing Java Native Interface object. |
Properties
| Name | Description |
|---|---|
| Class |
Returns the runtime class of this |
| Handle |
The handle to the underlying Android instance. (Inherited from Object) |
| IntentCount | |
| JniIdentityHashCode |
Gets the identity hash code assigned to this Java peer by the interop runtime. (Inherited from Object) |
| JniManagedPeerState | (Inherited from JavaObject) |
| JniPeerMembers |
Provides JNI binding infrastructure for Android.App.TaskStackBuilder. |
| PeerReference |
Gets the JNI object reference for this Java peer. (Inherited from Object) |
| ThresholdClass |
Provides JNI binding infrastructure for Android.App.TaskStackBuilder. |
| ThresholdType |
Provides JNI binding infrastructure for Android.App.TaskStackBuilder. |
Methods
| Name | Description |
|---|---|
| AddNextIntent(Intent) |
Add a new Intent to the task stack. |
| AddNextIntentWithParentStack(Intent) |
Add a new Intent with the resolved chain of parents for the target activity to the task stack. |
| AddParentStack(Activity) |
Add the activity parent chain as specified by the getParentActivityIntent() method of the activity specified and the parentActivityName attributes of each successive activity (or activity-alias) element in the application's manifest to the task stack builder. |
| AddParentStack(Class) |
Add the activity parent chain as specified by the parentActivityName attribute of the activity (or activity-alias) element in the application's manifest to the task stack builder. |
| AddParentStack(ComponentName) |
Add the activity parent chain as specified by the parentActivityName attribute of the activity (or activity-alias) element in the application's manifest to the task stack builder. |
| Clone() |
Creates and returns a copy of this object. (Inherited from Object) |
| Construct(JniObjectReference, JniObjectReferenceOptions) | (Inherited from JavaObject) |
| Create(Context) |
Return a new TaskStackBuilder for launching a fresh task stack consisting of a series of activities. |
| Dispose() |
Releases the resources held by this Java peer. (Inherited from Object) |
| Dispose(Boolean) |
Releases the resources held by this Java peer. (Inherited from Object) |
| DisposeUnlessReferenced() | (Inherited from JavaObject) |
| EditIntentAt(Int32) |
Return the intent at the specified index for modification. |
| Equals(Object) | (Inherited from JavaObject) |
| 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) |
| GetIntents() |
Return an array containing the intents added to this builder. |
| GetPendingIntent(Int32, PendingIntentFlags, Bundle) |
Obtain a PendingIntent for launching the task constructed by this builder so far. |
| GetPendingIntent(Int32, PendingIntentFlags) |
Obtain a PendingIntent for launching the task constructed by this builder so far. |
| 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) |
| SetHandle(IntPtr, JniHandleOwnership) |
Sets the Handle property. (Inherited from Object) |
| SetPeerReference(JniObjectReference, JniObjectReferenceOptions) | (Inherited from JavaObject) |
| StartActivities() |
Start the task stack constructed by this builder. |
| StartActivities(Bundle) |
Start the task stack constructed by this builder. |
| ToArray<T>() |
Creates a managed array from this Java array wrapper. (Inherited from Object) |
| ToString() |
Returns a string representation of the object. (Inherited from Object) |
| UnregisterFromRuntime() |
Unregisters this Java peer from the interop runtime. (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
| Name | Description |
|---|---|
| IJavaPeerable.Disposed() | (Inherited from JavaObject) |
| IJavaPeerable.Finalized() | (Inherited from JavaObject) |
| IJavaPeerable.JniObjectReferenceControlBlock | (Inherited from JavaObject) |
| IJavaPeerable.SetJniIdentityHashCode(Int32) | (Inherited from JavaObject) |
| IJavaPeerable.SetJniManagedPeerState(JniManagedPeerStates) | (Inherited from JavaObject) |
| IJavaPeerable.SetPeerReference(JniObjectReference) | (Inherited from JavaObject) |
Extension Methods
| Name | Description |
|---|---|
| GetJniTypeName(IJavaPeerable) |
Gets the JNI name of the type of the instance |
| JavaAs<TResult>(IJavaPeerable) |
Try to coerce |
| JavaCast<TResult>(IJavaObject) |
Performs an Android runtime-checked type conversion. |
| JavaCast<TResult>(IJavaObject) | |
| TryJavaCast<TResult>(IJavaPeerable, TResult) |
Try to coerce |