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Parse Server RecyclerView Adapter with Data binding support
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| fun <T : ParseObject, VH : ViewDataBinding> RecyclerView.bind( | |
| query: ParseQuery<T>, | |
| @LayoutRes layout: Int = 0, | |
| lifecycleOwner: LifecycleOwner | |
| ): ParseRecyclerAdapter<T, VH> { | |
| val parseAdapter = ParseRecyclerAdapter<T, VH>(query, layout, lifecycleOwner) | |
| layoutManager = LinearLayoutManager(context) | |
| adapter = parseAdapter | |
| return parseAdapter | |
| } | |
| class ParseRecyclerAdapter<T : ParseObject, VH : ViewDataBinding>( | |
| private var query: ParseQuery<T>, | |
| private var layout: Int, | |
| lifecycleOwner: LifecycleOwner | |
| ) : | |
| RecyclerView.Adapter<ParseRecyclerAdapter<T, VH>.ViewHolder>(), LifecycleObserver { | |
| init { | |
| lifecycleOwner.lifecycle.addObserver(this) | |
| } | |
| private var objects: MutableList<T> = mutableListOf() | |
| private var eachFunc: View.(binding: VH) -> Unit = {} | |
| @OnLifecycleEvent(Lifecycle.Event.ON_START) | |
| fun start() { | |
| query.findInBackground { objects, e -> | |
| if (e != null) { | |
| return@findInBackground | |
| } | |
| this.objects.clear() | |
| this.objects.addAll(objects) | |
| notifyDataSetChanged() | |
| } | |
| } | |
| @OnLifecycleEvent(Lifecycle.Event.ON_STOP) | |
| fun stop() { | |
| if (query.isRunning) { | |
| query.cancel() | |
| } | |
| } | |
| override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder { | |
| val binding = DataBindingUtil.inflate<VH>( | |
| LayoutInflater.from(parent.context), layout, parent, false | |
| ) | |
| return ViewHolder(binding) | |
| } | |
| override fun getItemCount(): Int { | |
| return objects.size | |
| } | |
| override fun onBindViewHolder(holder: ViewHolder, position: Int) { | |
| val item: T = objects[position] | |
| holder.bind(item.objectId, item, eachFunc) | |
| } | |
| inner class ViewHolder(private val binding: VH) : | |
| RecyclerView.ViewHolder(binding.root) { | |
| fun bind(id: String, entry: T, click: View.(binding: VH) -> Unit) { | |
| binding.setVariable(BR.item, entry) | |
| binding.root.apply { | |
| tag = id | |
| click(binding) | |
| } | |
| } | |
| } | |
| fun forEach(lambda: View.(binding: VH) -> Unit) { | |
| eachFunc = lambda | |
| } | |
| } |
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