The swipe-to-refresh user interface pattern is implemented entirely within the SwipeRefreshLayout widget, which detects the vertical swipe, displays a distinctive progress bar, and triggers callback methods in your app. You enable this behavior by adding the widget to your layout file as the parent of a ListView or GridView , and implementing the refresh behavior that gets invoked when the user swipes. This lesson shows you how to add the widget to an existing layout. It also shows you how to add a refresh action to the action bar overflow area, so that users who may be unable to use the swipe gesture can trigger a manual update with an external device. The following example demonstrates how to add the SwipeRefreshLayout widget to an existing layout file containing a ListView :. However, explicitly declaring the ListView in this way supersedes the default ListFragment view structure.
[Update: Apr. 24] Android 12 update tracker: Here’s the current status
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Join Stack Overflow to learn, share knowledge, and build your career. Connect and share knowledge within a single location that is structured and easy to search. I can't for the life of me figure out how to have an activity be refreshed after pressing the back button. I currently have activity A that fires an intent to goto B and while on act B if you press back I want to go back to act A but have it refresh itself. I can use this intent to refresh the activity currently:. But I can't figure out how to properly use the onResume function to refresh my act A after going back to it. This works even if you terminate ActivityB by the press of the back button.
I was only able to get notifyDataSetChanged only by getting new adapter data, then resetting the adapter for the list view, then making the call like so:. If you are going by android guide lines and you are using the ContentProviders to get data from Database and you are displaying it in the ListView using the CursorLoader and CursorAdapters ,then you all changes to the related data will automatically be reflected in the ListView. Your getContext. No need for the extra work around.
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