Created
September 19, 2017 20:24
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Adapter
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class SortedListSampleAdapter : RecyclerView.Adapter<SortedListSampleAdapter.UserViewHolder>() { | |
private val userSortedList: SortedList<User> | |
init { | |
userSortedList = SortedList(User::class.java, object : SortedListAdapterCallback<User>(this) { | |
override fun compare(o1: User, o2: User): Int = o1.score - o2.score; | |
override fun areContentsTheSame(oldItem: User, newItem: User): Boolean = oldItem.id == newItem.id | |
override fun areItemsTheSame(item1: User, item2: User): Boolean = item1 == item2 | |
}) | |
} | |
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): UserViewHolder { | |
val view = LayoutInflater.from(parent.context).inflate(R.layout.item_user, parent, false) | |
return UserViewHolder(view) | |
} | |
override fun onBindViewHolder(holder: UserViewHolder, position: Int) { | |
holder.setUser(userSortedList.get(position)) | |
} | |
override fun getItemCount() = userSortedList.size() | |
fun addUser(user: User) { | |
userSortedList.add(user) | |
} | |
fun addUsers(users: List<User>) { | |
userSortedList.addAll(users) | |
} | |
fun removeUser(index: Int) { | |
if (userSortedList.size() == 0) { | |
return | |
} | |
userSortedList.remove(userSortedList.get(index)) | |
} | |
class UserViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) { | |
var textViewUsername: TextView = itemView.findViewById(R.id.textViewUserName) | |
var textViewBirthDate: TextView = itemView.findViewById(R.id.textViewBirthDate) | |
var textViewScore: TextView = itemView.findViewById(R.id.textViewScore) | |
fun setUser(user: User) { | |
textViewUsername.text = user.name | |
textViewBirthDate.text = "Age: " + user.age | |
textViewScore.text = "Score:" + user.score | |
} | |
} | |
} |
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