BaseFragment
public
class
BaseFragment
extends BrandedFragment
java.lang.Object | |||
↳ | android.app.Fragment | ||
↳ | androidx.leanback.app.BrandedFragment | ||
↳ | androidx.leanback.app.BaseFragment |
This class is deprecated.
use BaseSupportFragment
Base class for leanback Fragments. This class is not intended to be subclassed by apps.
Summary
Inherited constants |
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Public methods | |
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final
ProgressBarManager
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getProgressBarManager()
Returns the |
void
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onCreate(Bundle savedInstanceState)
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void
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onDestroyView()
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void
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onViewCreated(View view, Bundle savedInstanceState)
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void
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prepareEntranceTransition()
Enables entrance transition. |
void
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startEntranceTransition()
When fragment finishes loading data, it should call startEntranceTransition() to execute the entrance transition. |
Protected methods | |
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Object
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createEntranceTransition()
Create entrance transition. |
void
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onEntranceTransitionEnd()
Callback when entrance transition is ended. |
void
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onEntranceTransitionPrepare()
Callback when entrance transition is prepared. |
void
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onEntranceTransitionStart()
Callback when entrance transition is started. |
void
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runEntranceTransition(Object entranceTransition)
Run entrance transition. |
Inherited methods | |
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Public methods
getProgressBarManager
public final ProgressBarManager getProgressBarManager ()
Returns the ProgressBarManager
.
Returns | |
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ProgressBarManager |
The ProgressBarManager .
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onDestroyView
public void onDestroyView ()
onViewCreated
public void onViewCreated (View view, Bundle savedInstanceState)
Parameters | |
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view |
View |
savedInstanceState |
Bundle |
prepareEntranceTransition
public void prepareEntranceTransition ()
Enables entrance transition.
Entrance transition is the standard slide-in transition that shows rows of data in browse screen and details screen.
The method is ignored before LOLLIPOP (API21).
This method must be called in or
before onCreate(). Typically entrance transition should be enabled when savedInstance is
null so that fragment restored from instanceState does not run an extra entrance transition.
When the entrance transition is enabled, the fragment will make headers and content
hidden initially.
When data of rows are ready, app must call startEntranceTransition()
to kick off
the transition, otherwise the rows will be invisible forever.
It is similar to android:windowsEnterTransition and can be considered a late-executed android:windowsEnterTransition controlled by app. There are two reasons that app needs it:
Transition object is returned by createEntranceTransition(). Typically the app does not need override the default transition that browse and details provides.
startEntranceTransition
public void startEntranceTransition ()
When fragment finishes loading data, it should call startEntranceTransition() to execute the entrance transition. startEntranceTransition() will start transition only if both two conditions are satisfied:
If startEntranceTransition() is called before onViewCreated(), it will be pending and executed when view is created.
Protected methods
createEntranceTransition
protected Object createEntranceTransition ()
Create entrance transition. Subclass can override to load transition from resource or construct manually. Typically app does not need to override the default transition that browse and details provides.
Returns | |
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Object |
onEntranceTransitionEnd
protected void onEntranceTransitionEnd ()
Callback when entrance transition is ended.
onEntranceTransitionPrepare
protected void onEntranceTransitionPrepare ()
Callback when entrance transition is prepared. This is when fragment should stop user input and animations.
onEntranceTransitionStart
protected void onEntranceTransitionStart ()
Callback when entrance transition is started. This is when fragment should stop processing layout.
runEntranceTransition
protected void runEntranceTransition (Object entranceTransition)
Run entrance transition. Subclass may use TransitionManager to perform go(Scene) or beginDelayedTransition(). App should not override the default implementation of browse and details fragment.
Parameters | |
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entranceTransition |
Object |