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.

Notifydatasetchanged not working

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If you make pull-request, I will merge it.

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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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Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Re-create the ArrayAdapter with the new List data. For an ArrayAdapter , notifyDataSetChanged only works if you use the add , insert , remove , and clear on the Adapter. Making a method that recreate items in adapter. You signed in with another tab or window. Sorry, something went wrong. 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 like this. Reload to refresh your session. Jump to bottom. 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. Do you mean, you can't change background of view even if calling notifyDataSetChanged and swipe view pager 2, 3 times? I understand the cause of the problem. Sign up for free to join this conversation on GitHub. Is there any solution for this problem?

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All reactions. So view will be redrawed and background color will change. You signed out in another tab or window. Your choices are: Use the functions of the ArrayAdapter to modify the underlying List add , insert , remove , clear , etc. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. The Adapter does not know you changed the List in the Activity. Thank you for your help VIkash Parajuli vparajuli gmail. The text was updated successfully, but these errors were encountered:. Reload to refresh your session. Making a method that recreate items in adapter. You signed in with another tab or window. Have a question about this project? Comment Reblog Subscribe Subscribed. Sign in to your account. Sign up for free to join this conversation on GitHub.