Sometimes we need to know when fragment is selected and to handle it.
1. Add interface:
1 2 3 4 | public interface FragmentSelection{ void onPageUnSelected(); void onPageSelected();} |
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fragment
Useful and forgettable Fragment methods
- getContext() – Return the
Contextthis fragment is currently associated with.
- getView() – Get the root view for the fragment’s layout (the one returned by
onCreateView(LayoutInflater, ViewGroup, Bundle)), if provided.
- isAdded() – Return true if the fragment is currently added to its activity.
- isHidden() – Return true if the fragment has been hidden.
- isVisible() – Return true if the fragment is currently visible to the user.
Sequence of lifecycle methods (activity/fragment)
This flow-chart represents the sequence of methods that are invoked in Activity and Fragment while they are created and destroyed.
