Loading core/java/android/view/ViewParent.java +17 −0 Original line number Diff line number Diff line Loading @@ -269,6 +269,23 @@ public interface ViewParent { /** * Called when a child view now has or no longer is tracking transient state. * * <p>"Transient state" is any state that a View might hold that is not expected to * be reflected in the data model that the View currently presents. This state only * affects the presentation to the user within the View itself, such as the current * state of animations in progress or the state of a text selection operation.</p> * * <p>Transient state is useful for hinting to other components of the View system * that a particular view is tracking something complex but encapsulated. * A <code>ListView</code> for example may acknowledge that list item Views * with transient state should be preserved within their position or stable item ID * instead of treating that view as trivially replaceable by the backing adapter. * This allows adapter implementations to be simpler instead of needing to track * the state of item view animations in progress such that they could be restored * in the event of an unexpected recycling and rebinding of attached item views.</p> * * <p>This method is called on a parent view when a child view or a view within * its subtree begins or ends tracking of internal transient state.</p> * * @param child Child view whose state has changed * @param hasTransientState true if this child has transient state */ Loading Loading
core/java/android/view/ViewParent.java +17 −0 Original line number Diff line number Diff line Loading @@ -269,6 +269,23 @@ public interface ViewParent { /** * Called when a child view now has or no longer is tracking transient state. * * <p>"Transient state" is any state that a View might hold that is not expected to * be reflected in the data model that the View currently presents. This state only * affects the presentation to the user within the View itself, such as the current * state of animations in progress or the state of a text selection operation.</p> * * <p>Transient state is useful for hinting to other components of the View system * that a particular view is tracking something complex but encapsulated. * A <code>ListView</code> for example may acknowledge that list item Views * with transient state should be preserved within their position or stable item ID * instead of treating that view as trivially replaceable by the backing adapter. * This allows adapter implementations to be simpler instead of needing to track * the state of item view animations in progress such that they could be restored * in the event of an unexpected recycling and rebinding of attached item views.</p> * * <p>This method is called on a parent view when a child view or a view within * its subtree begins or ends tracking of internal transient state.</p> * * @param child Child view whose state has changed * @param hasTransientState true if this child has transient state */ Loading
