How to design custom GATT services and characteristics. To make matters more difficult, Adafruit does not provide any guidance on designing mobile applications to pair with their BLE modules and the source code for their applications is difficult to reverse engineer. However, when creating custom hardware there is often a need to create custom services and attributes and there aren't many tutorials available. There are three fundamental concepts in BLE: profiles, services, and attributes.īluetooth SIG has standardized many common profiles, services, and attributes. Most application profiles utilize the General Attribute Profile (GATT) to send data over a BLE link. The Bluetooth Special Interest Group (SIG) defines several specifications a device should implement to interact with a Bluetooth device, which they term "profiles". Wearable devices, like the smart garments I help design at Predictive Wear, must limit power consumption wherever possible to extend battery life, and frequently utilize BLE. This can be tedious to make.Bluetooth Low Energy (BLE) is a form of low power Bluetooth communication. So what you want to do is instead of changing the isSelected property you need to create a copy of the list and in that copy alone you change the isSelected and pass the copy to submitList. Because if you change a property like isSelected in the existing lisk and simply call submitList with that same list nothing will happen. Ideally you want to submit a new list every time you call submitList. The thing is, ListAdapter works best if the list has items that are immutable. 
But that alone probably won't fix your issue. If the items have an id you might want to compare them instead of the item themselves. areItemsTheSame is about whether it is the same item. areContentsTheSame is the one that checks if things in your items are different. ) : ListAdapter(CategoryMainDiffUtils()) )įirst of, the implementation of areContentsTheSame and areItemsTheSame probably needs to be switched. How to update the recyclerview view when one of the object class in list is changed like value Boolean changes in one object classĪdapter Class Below class CategoryMainAdapter( But not updating the any particular value like isSelected : Boolean = false in object class
It works when I add or remove a item from the list. List Adapter diffutil not updating the list item in recyclerview.
0 kommentar(er)
