Notifydatasetchanged not working

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For an ArrayAdapter , notifyDataSetChanged only works if you use the add , insert , remove , and clear on the Adapter. When an ArrayAdapter is constructed, it holds the reference for the List that was passed in. If you were to pass in a List that was a member of an Activity, and change that Activity member later, the ArrayAdapter is still holding a reference to the original List. The Adapter does not know you changed the List in the Activity. Your choices are: Use the functions of the ArrayAdapter to modify the underlying List add , insert , remove , clear , etc. Re-create the ArrayAdapter with the new List data. Uses a lot of resources and garbage collection.

Notifydatasetchanged not working

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Sign in to your account. Uses a lot of resources and garbage collection.

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Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. I want to change background of fragment which is on viewpager but it shows effect after fragment moves. Is there any solution for this problem? The text was updated successfully, but these errors were encountered:. What does "it shows effect after fragment moves. Do you mean, you can't change background of view even if calling notifyDataSetChanged and swipe view pager 2, 3 times? Could you show me a sample code to reproduce the problem?

Notifydatasetchanged not working

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Maybe you can make it in custom adapter of your project or this library. All reactions. Uses a lot of resources and garbage collection. Sign me up. For an ArrayAdapter , notifyDataSetChanged only works if you use the add , insert , remove , and clear on the Adapter. I'll try with Bus. Jump to bottom. Use the notifyDataSetChanged every time the list is updated. Is there any solution for this problem? Have a question about this project?

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Uses a lot of resources and garbage collection. This library supports 'notifyDataSetChanged' only for changing order of items or size of list. Sign up for free to join this conversation on GitHub. Dismiss alert. Do you mean, you can't change background of view even if calling notifyDataSetChanged and swipe view pager 2, 3 times? For an ArrayAdapter , notifyDataSetChanged only works if you use the add , insert , remove , and clear on the Adapter. Using event bus or content-provider, make activity post Changing background color event , and handle it in fragment to change view's behavior. Could you show me a sample code to reproduce the problem? Thank you. Thank you for your help VIkash Parajuli vparajuli gmail. Making a method that recreate items in adapter. No matter whether using this library or not, if you want recreating fragment on calling notifyDataSetChanged , you have to override getItemPosition method of adapter and return appropriate value. I understand the cause of the problem. Leave a comment Cancel reply. All reactions.