nitrico / lastadapter Goto Github PK

Is possible to I access my layout to change the text color like

if(item.price > 100) {
// change my TextViewColor
}

instead of use LayoutHandler with 2 differents layout:

LastAdapter(items, BR.something)
                .layout { item, position ->
                    if (items[position].price > 100) {
                        R.layout.item_red
                    } else {
                        R.layout.item_green
                    }
                }.into(something)

Hello,

Is it possible to liste for item click listern ?

Thank's

Hi, I'm trying to use LastAdapter, and have a problem. I refered app on github, and have error "Unresolved reference: BR". Is this error occur before?

Here's my item layout source

<layout xmlns:android="http://schemas.android.com/apk/res/android" >

<data>
    <variable name="item" type="com.example.icarusud.project.RecyclerViewItem" />
</data>

<TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="@{item.text}" />
</layout>

The library doesn't work properly when I try to update the recyclerview-v7 dependency to version 25.0.0.

Some items are not bound correctly or not bound at all. I don't know if it is related to a modification introduced on purpose to the RecyclerView library or a bug.

Any help would be appreciated.

What am I doing wrong here? Please help

Temp.zip

how can i add chekbox, radio button or image and handle them?

Hi there,

LastAdapter is currently only available from JCenter as a dependency. Since version 4.2 of Android studio, there is a warning: "JCenter is at end of life". Googling this revealed this article: https://wajahatkarim.com/2021/02/jcenter-bintray-shutting-down/

So please move over to maven Central.

Kind regards,

Lars

Since version 3.1 Android Studio supports databinding to LiveData. But in order to track changes of a LiveData field, ViewDataBinding object must be provided with LifecycleOwner which LastAdapter does not. So binding to LiveData via LastAdapter is efficiently onetime binding.
Please, add possibility to pass LifecycleOwner into LastAdapter (probably, constructor argument will do fine).

Is possibile to handle the update of only some item attributes and not entire item???

Hello nitrico, i am so glad to used your library, it's save my work time, but how can i use more LastAdapter ? Are each BR must be item variabel or must same name "BR.item" ?
Thanks before i hope you understand what i ask.

I see new version 2.3.0 but no change log there. We use LastAdapter in every project. It is important to know the changes before updating. Can you please provide the changes?

Thanks a lot for the wonderful library!

org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:kaptGenerateStubsDebugKotlin'.

I just migrated whole project to Android Studio 3.2.1, gradle 4.10, Kotlin 1.2.71

I can't build project due to error with generated binding class:

Do you have any idea what might be the cause? Cleaning project does not help here. I'm using databinding compiler from androidx reference, but i doubt that this have any impact on this

here is a item which include image and text

now, i want to use adapter notifyItemChanged(position, payload) method to just refresh the text not the image ,

but in the code,just holder.binding.executePendingBindings() still will refresh the image

so how to refresh item special element in databinding ?

Hi,

I have an ObservableArrayList of a simple Pojo Message

private final ObservableArrayList<Message> messageList = new ObservableArrayList<>();

new LastAdapter(messageList, BR.message)
                .map(Message.class, R.layout.item_message)
                .into(mRecycleView);

When the user clicks on an ImageView I wanna mark it as read and redraw this line/item. I have added an event handler for this.

<import type="..Handler" />

<variable
    name="message"
    type="....model.Message" />

<ImageView
    android:id="@+id/read"
    android:onClick="@{(view) -> Handler.markAsread(view, message)}"
    android:visibility="@{notificacao.lido ? View.GONE : View.VISIBLE}"
    ...
 />

public static class Handler {
    public static void markAsread(View view, Message message) {
        message.setRead(true);
    }
}

But I have no idea how to redraw this item on the RecyclerView. Just change the Message attribute seems does not work.

I need to get a ViewHolder object in the onBind().

This is necessary for use functions of ItemTouchHelper, for example:

private val ITEM = Type<ItemButtonBinding>(R.layout.item)
            .onBind {
                binding.vButton.setOnTouchListener({ v, event ->
                    if (MotionEventCompat.getActionMasked(event) == MotionEvent.ACTION_DOWN) {
                        touchHelper.startDrag(viewHolder)
                    }
                    false
                })
            }

I love the idea of this library and I understand that it is very nice to develop it in Kotlin. However, due to the use of kotlin a dependency on the kotlin-stdlib is added which causes 5000 extra methods in the dex and unfurtunately that makes it impossible for me to use. Would be great to have a Java variant as well for those of us who are not joining the kotlin hype (yet)

For those, who want to use new architecture comonent and PageableList I created:

https://github.com/hanibalsk/LastAdapter

There is a problem with LayoutHandlerAdapter. I want to use it in my project, when LastAdapter with Layout is loader I've got KotlinNullPointerException. Here is my code:
LastAdapter(viewModel.conversation, BR.item).layout { item, _ -> when(item) { is ContactItem -> { if (item.isCustomer) { R.layout.item_client } else { R.layout.item_service } } else -> R.layout.item_service } }.into(claimContactRv)

When I use normal LastAdapter (without LayoutHandling) everything works well.

I also run example project and get the same error. I paste it below.

kotlin.KotlinNullPointerException at com.github.nitrico.lastadapter.LastAdapter.onBindViewHolder(LastAdapter.kt:109) at com.github.nitrico.lastadapter.LastAdapter.onBindViewHolder(LastAdapter.kt:27) at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6508) at com.github.nitrico.lastadapter.LastAdapter.onBindViewHolder(LastAdapter.kt:125) at com.github.nitrico.lastadapter.LastAdapter.onBindViewHolder(LastAdapter.kt:27) at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6541) at android.support.v7.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5484) at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5750) at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5589) at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5585) at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2231) at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1558) at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1518) at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:610) at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3719) at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3436) at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3988) at android.view.View.layout(View.java:16630) at android.view.ViewGroup.layout(ViewGroup.java:5437) at android.support.constraint.ConstraintLayout.onLayout(ConstraintLayout.java:1197) at android.view.View.layout(View.java:16630) at android.view.ViewGroup.layout(ViewGroup.java:5437) at android.support.v4.view.ViewPager.onLayout(ViewPager.java:1769) at android.view.View.layout(View.java:16630) at android.view.ViewGroup.layout(ViewGroup.java:5437) at android.support.constraint.ConstraintLayout.onLayout(ConstraintLayout.java:1197) at android.view.View.layout(View.java:16630) at android.view.ViewGroup.layout(ViewGroup.java:5437) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336) at android.widget.FrameLayout.onLayout(FrameLayout.java:273) at android.view.View.layout(View.java:16630) at android.view.ViewGroup.layout(ViewGroup.java:5437) at android.support.v7.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:443) at android.view.View.layout(View.java:16630) at android.view.ViewGroup.layout(ViewGroup.java:5437) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336) at android.widget.FrameLayout.onLayout(FrameLayout.java:273) at android.view.View.layout(View.java:16630) at android.view.ViewGroup.layout(ViewGroup.java:5437) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1743) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1586) at android.widget.LinearLayout.onLayout(LinearLayout.java:1495) at android.view.View.layout(View.java:16630) at android.view.ViewGroup.layout(ViewGroup.java:5437) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336) at android.widget.FrameLayout.onLayout(FrameLayout.java:273) at com.android.internal.policy.PhoneWindow$DecorView.onLayout(PhoneWindow.java:2678) at android.view.View.layout(View.java:16630) at android.view.ViewGroup.layout(ViewGroup.java:5437) at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2171) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1931) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1107) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6013) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:858) at android.view.Choreographer.doCallbacks(Choreographer.java:670) at android.view.Choreographer.doFrame(Choreographer.java:606)

Can't make LastAdapter work on complex lists after migration to 2.2
So far I rollback all changes and keep using 2.0

05-02 17:58:39.019 E/AndroidRuntime: FATAL EXCEPTION: main
                                     Process: com.ninetyseconds.auckland.debug, PID: 7837
                                     kotlin.KotlinNullPointerException
                                         at com.github.nitrico.lastadapter.LastAdapter$onCreateViewHolder$1.onPreBind(LastAdapter.kt:94)
                                         at android.databinding.ViewDataBinding$4.onNotifyCallback(ViewDataBinding.java:118)
                                         at android.databinding.ViewDataBinding$4.onNotifyCallback(ViewDataBinding.java:112)
                                         at android.databinding.CallbackRegistry.notifyCallbacks(CallbackRegistry.java:201)
                                         at android.databinding.CallbackRegistry.notifyFirst64(CallbackRegistry.java:122)
                                         at android.databinding.CallbackRegistry.notifyRemainder(CallbackRegistry.java:169)
                                         at android.databinding.CallbackRegistry.notifyRecurse(CallbackRegistry.java:145)
                                         at android.databinding.CallbackRegistry.notifyCallbacks(CallbackRegistry.java:91)
                                         at android.databinding.ViewDataBinding.executeBindingsInternal(ViewDataBinding.java:371)
                                         at android.databinding.ViewDataBinding.executePendingBindings(ViewDataBinding.java:351)
                                         at com.github.nitrico.lastadapter.LastAdapter.onBindViewHolder(LastAdapter.kt:108)
                                         at com.github.nitrico.lastadapter.LastAdapter.onBindViewHolder(LastAdapter.kt:27)
                                         at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6356)
                                         at com.github.nitrico.lastadapter.LastAdapter.onBindViewHolder(LastAdapter.kt:122)
                                         at com.github.nitrico.lastadapter.LastAdapter.onBindViewHolder(LastAdapter.kt:27)
                                         at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6389)
                                         at android.support.v7.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5335)
                                         at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5598)
                                         at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5440)
                                         at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5436)
                                         at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2224)
                                         at android.support.v7.widget.GridLayoutManager.layoutChunk(GridLayoutManager.java:556)
                                         at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1511)
                                         at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:595)
                                         at android.support.v7.widget.GridLayoutManager.onLayoutChildren(GridLayoutManager.java:170)
                                         at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3583)
                                         at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3312)
                                         at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3844)
                                         at android.view.View.layout(View.java:17637)
                                         at android.view.ViewGroup.layout(ViewGroup.java:5575)
                                         at android.support.v4.widget.SwipeRefreshLayout.onLayout(SwipeRefreshLayout.java:636)
                                         at android.view.View.layout(View.java:17637)
                                         at android.view.ViewGroup.layout(ViewGroup.java:5575)
                                         at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1741)
                                         at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1585)
                                         at android.widget.LinearLayout.onLayout(LinearLayout.java:1494)
                                         at android.view.View.layout(View.java:17637)
                                         at android.view.ViewGroup.layout(ViewGroup.java:5575)
                                         at android.support.v4.view.ViewPager.onLayout(ViewPager.java:1795)
                                         at android.view.View.layout(View.java:17637)
                                         at android.view.ViewGroup.layout(ViewGroup.java:5575)
                                         at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1741)
                                         at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1585)
                                         at android.widget.LinearLayout.onLayout(LinearLayout.java:1494)
                                         at android.view.View.layout(View.java:17637)
                                         at android.view.ViewGroup.layout(ViewGroup.java:5575)
                                         at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
                                         at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
                                         at android.view.View.layout(View.java:17637)
                                         at android.view.ViewGroup.layout(ViewGroup.java:5575)
                                         at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1741)
05-02 17:58:39.019 E/AndroidRuntime:     at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1585)
                                         at android.widget.LinearLayout.onLayout(LinearLayout.java:1494)
                                         at android.view.View.layout(View.java:17637)
                                         at android.view.ViewGroup.layout(ViewGroup.java:5575)
                                         at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
                                         at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
                                         at android.view.View.layout(View.java:17637)
                                         at android.view.ViewGroup.layout(ViewGroup.java:5575)
                                         at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1741)
                                         at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1585)
                                         at android.widget.LinearLayout.onLayout(LinearLayout.java:1494)
                                         at android.view.View.layout(View.java:17637)
                                         at android.view.ViewGroup.layout(ViewGroup.java:5575)
                                         at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
                                         at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
                                         at com.android.internal.policy.DecorView.onLayout(DecorView.java:727)
                                         at android.view.View.layout(View.java:17637)
                                         at android.view.ViewGroup.layout(ViewGroup.java:5575)
                                         at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2346)
                                         at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2068)
                                         at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1254)
                                         at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6338)
                                         at android.view.Choreographer$CallbackRecord.run(Choreographer.java:874)
                                         at android.view.Choreographer.doCallbacks(Choreographer.java:686)
                                         at android.view.Choreographer.doFrame(Choreographer.java:621)
                                         at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:860)
                                         at android.os.Handler.handleCallback(Handler.java:751)
                                         at android.os.Handler.dispatchMessage(Handler.java:95)
                                         at android.os.Looper.loop(Looper.java:154)
                                         at android.app.ActivityThread.main(ActivityThread.java:6121)
                                         at java.lang.reflect.Method.invoke(Native Method)
                                         at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:889)
                                         at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:779)```

Just find out a nice talk about RecyclerView optimisations

https://realm.io/news/360andev-yigit-boyar-pro-recyclerview-android-ui-java/?utm_source=Android+Weekly&utm_campaign=a73cc3ac35-Android_Weekly_232&utm_medium=email&utm_term=0_4eb677ad19-a73cc3ac35-337949305

And this question on stackowerflow:http://stackoverflow.com/questions/29795299/what-is-the-sortedlistt-working-with-recyclerview-adapter

Would be nice to have SortedList support in your lib @nitrico

Hello,
I would like to use Realm with the library, but i can i adapt with a realmResult ?

Thank you

Is it possible (in a easy way) to create a single selection list using LastAdapter? I would like to have a list of items and be able to set an item as selected. Whenever the user selects another item, the first item should be deselected and the new item selected.

Thanks!

I've set the up project as specified in the README but get the following error:

Error:Execution failed for task ':app:kaptDebugKotlin'.

Compilation error. See log for more details

Hello.

I use LastAdapter v1.2.0. My code is written in Java. Sometimes when I go back to activity with fragment I use LastAdapter in I get this:

java.lang.IllegalStateException: reference.get() must not be null
    at com.github.nitrico.lastadapter.WeakReferenceOnListChangedCallback.getAdapter(WeakReferenceOnListChangedCallback.kt:30)
    at com.github.nitrico.lastadapter.WeakReferenceOnListChangedCallback.onItemRangeInserted(WeakReferenceOnListChangedCallback.kt:41)
    at android.databinding.ListChangeRegistry$1.onNotifyCallback(ListChangeRegistry.java:47)
    at android.databinding.ListChangeRegistry$1.onNotifyCallback(ListChangeRegistry.java:38)
    at android.databinding.CallbackRegistry.notifyCallbacks(CallbackRegistry.java:201)
    at android.databinding.CallbackRegistry.notifyFirst64(CallbackRegistry.java:122)
    at android.databinding.CallbackRegistry.notifyRemainder(CallbackRegistry.java:169)
    at android.databinding.CallbackRegistry.notifyRecurse(CallbackRegistry.java:145)
    at android.databinding.CallbackRegistry.notifyCallbacks(CallbackRegistry.java:91)
    at android.databinding.ListChangeRegistry.notifyCallbacks(ListChangeRegistry.java:135)
    at android.databinding.ListChangeRegistry.notifyInserted(ListChangeRegistry.java:93)
    at android.databinding.ObservableArrayList.notifyAdd(ObservableArrayList.java:118)
    at android.databinding.ObservableArrayList.addAll(ObservableArrayList.java:60)
    ...

Hello, I use
android:src="@{item.drawableRes}" for ImageView and it doesn't work.
Where drawableRes is an integer value of drawable resource (R.drawable.icon).

Hello miguel,
how i can add item when recyclerview has created ?

this mycode

private ObservableArrayList<ImageExpiredEntity> imageExpiredObservable = new ObservableArrayList<>();
imageExpiredAdapter = new LastAdapter(imageExpiredObservable, BR.imageExpired) .map(ImageExpiredEntity.class, typeImageExpired)(mRecyclerViewImageExpired);

this code how to add item on observable list

ImageExpiredEntity imageExpiredEntity = new ImageExpiredEntity(); imageExpiredEntity.setPath_file(bundle.getString("file_path")); imageExpiredEntity.setFile_name(bundle.getString("file_name"));
imageExpiredObservable.add(imageExpiredEntity);

thanks

LastAdapter 2.0 is coming soon and I'd like to hear your thoughts or suggestions about its API.

Listeners:

• They will be specific for each item type, instead of one for the whole adapter.
• They probably will not provide parameters view, type and item anymore, only binding and position. item and view will be available through binding.item and binding.root.
• I will add an onRecycle callback for the view being recycled.
• Maybe another onCreate callback for the ViewHolder being created (for the first time). Not sure yet.
• Should I keep the onClick and onLongClick listeners? Are you really using them? I mean, you can also set them in the layout itself or in the onBind callback.

The API for Kotlin is going to be pretty cool, in my opinion:

LastAdapter.with(Data.items, BR.item)
    .map<Header, ItemHeaderBinding>(R.layout.item_header) {
        onCreate { println("Created ${binding.item} at position $position") }
        onBind { println("Bound ${binding.item} at position $position") }
        onClick { context.toast("Click on ${binding.item} at position $position") }
        onLongClick { context.toast("Long click on ${binding.item} at position $position") }
        onRecycle { println("Recycled ${binding.item} at position $position") }
    }
    .map<Point, ItemPointBinding>(R.layout.item_point) /*{
        onCreate { println("Created ${binding.item} at position $position") }
        onBind { println("Bound ${binding.item} at position $position") }
        onClick { context.toast("Click on ${binding.item} at position $position") }
        onLongClick { context.toast("Long click on ${binding.item} at position $position") }
        onRecycle { println("Recycled ${binding.item} at position $position") }
    }*/
    .into(list)

API for Java is not so cool, at least right now...

LayoutHandler / TypeHandler:
With the listeners being specific for each type, the "LayoutHandler" should become a "TypeHandler" and returns more than just the layout. Probably something like:

val typeHeader = Type<ItemHeaderBinding>(R.layout.item_header)
    .onBind { println("Bound ${binding.item} at position $position") }
    .onClick { context.toast("Click on ${binding.item} at position $position") }
    .onLongClick { context.toast("Long click on ${binding.item} at position $position") }
    .onRecycle { println("Recycled ${binding.item} at position $position") }

val typePoint = Type<ItemPointBinding>(R.layout.item_point)
    .onClick { context.toast("Click on ${binding.item} at position $position") }

val typeHeaderFist = Type<ItemHeaderFirstBinding>(R.layout.item_header_first) 
    .onBind { println("Bound ${binding.item} at position $position") }

LastAdapter.with(Data.items, BR.item) {
    when (item) {
        is Header -> if (position == 0) typeHeaderFirst else typeHeader
        is Point -> typePoint
        else -> null
    }
}.into(list)

Data Binding:
I'm even considering the possibility of letting the "users" decide if they want to use Data Binding or not, and do the binding manually if they want.

Feel free to leave your thoughts here :)

I am using like this in my adapter but somehow the code in onBind does not execute

LastAdapter(doList(list), BR.item)
                .map<Header, EventHeaderBinding>(R.layout.event_header)
                .map<Item, ItemEventBinding>(R.layout.item_event) {
                    onBind {
                        Log.d("Bind","# ${it.adapterPosition}")
                        val position = it.adapterPosition - 1
                        if (position >= 0) {
                            if (list[position].from_date == list[position - 1].from_date) {
                                it.binding.date.visibility = View.INVISIBLE
                            } else {
                                it.binding.date.visibility = View.VISIBLE
                            }
                        } else {
                            it.binding.date.visibility = View.VISIBLE
                        }
                    }
                    onClick {
                        val intent = Intent(applicationContext, EventDetailActivity::class.java)
                        intent.putExtra(event_detail_bundle_name, it.binding.item)
                        startActivity(intent)
                    }
                }.into(event_recycler) 

For instance if i want to remove a row onClick of an Id not the view. How do i pass the position for onClick. android:onClick="@{v -> item.onDelete(v)}". But this is View.

Stack trace:

07-10 15:11:53.936 E/AndroidRuntime: FATAL EXCEPTION: main
                                     Process: com.nejctomsic.registerzdravil.debug, PID: 18830
                                     java.lang.IndexOutOfBoundsException: Index: 3, Size: 1
                                         at java.util.ArrayList.get(ArrayList.java:411)
                                         at com.github.nitrico.lastadapter.LastAdapter.getType(LastAdapter.kt:178)
                                         at com.github.nitrico.lastadapter.LastAdapter.onViewRecycled(LastAdapter.kt:132)
                                         at com.github.nitrico.lastadapter.LastAdapter.onViewRecycled(LastAdapter.kt:27)
                                         at android.support.v7.widget.RecyclerView$Recycler.dispatchViewRecycled(RecyclerView.java:6064)

The issue was not present until version 2.2.2. It was added in this commit. The problem is when notifyDataSetChanged() is called on the adapter, with a new backing list that has fewer elements than the old one. To fix this, the line that compares the position should be reverted to this one.

It looks like that files gradle-wrapper.jar and gradle-wrapper.properties were missed in this project, so it is impossible to build the project from CLI.

Could you please add them?

LastAdapter 2.2.2
Kotlin 1.1.2-3
Start experienced one more crash today with following stacktrace

java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.support.v7.widget.RecyclerView$ViewHolder.shouldIgnore()' on a null object reference
                                         at android.support.v7.widget.RecyclerView.dispatchLayoutStep3(RecyclerView.java:3610)
                                         at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3323)
                                         at android.support.v7.widget.RecyclerView.consumePendingUpdateOperations(RecyclerView.java:1637)
                                         at android.support.v7.widget.RecyclerView$1.run(RecyclerView.java:343)
                                         at android.view.Choreographer$CallbackRecord.run(Choreographer.java:874)
                                         at android.view.Choreographer.doCallbacks(Choreographer.java:686)
                                         at android.view.Choreographer.doFrame(Choreographer.java:618)
                                         at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:860)
                                         at android.os.Handler.handleCallback(Handler.java:751)
                                         at android.os.Handler.dispatchMessage(Handler.java:95)
                                         at android.os.Looper.loop(Looper.java:154)
                                         at android.app.ActivityThread.main(ActivityThread.java:6121)
                                         at java.lang.reflect.Method.invoke(Native Method)
                                         at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:889)
                                         at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:779)

Works stable after downgrade version to 2.0.0

is it possible to add image in imageview via picasso

<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="@{viewmodel.firstImage}"
android:id="@+id/imageView3" />

It would be really amazing if DiffUtils can be plugged in with this library. Are you planning on doing it?

Hey there, really awesome little library 👍

The RecyclerView support library includes a tool to calculate the difference between two lists and update the adapter's content with more precision. It's called DiffUtil.

Dou you think it would be feasible to include this functionality in this library by providing a seperate method next to notifyDataSetChanged() and all the others, that uses this utility?

I am willing to invest some time into implementing this if you are interested.

Sorry I just saw this was already asked a while ago in #30.
I think this is basic stuff that should be included in every RecyclerView adapter. I guess I could just implement it in my own code, but getting it for free through this library would be even better.

Just tried to update my project to AndroidX (https://developer.android.com/topic/libraries/support-library/androidx-rn) and LastAdapter took issue with the change, despite the Refactoring Tool claiming to use dependency translation to enable compatibility with Support-library-based libraries.

In my own use of data binding and view holders I have some more complex interactions from the view to the view holder. I have several controls within an item that have their own listeners. So I have different ViewHolder types and I actually have a variable in the layout for the holder and I can bind to or use methods on the ViewHolder to do listeners or provide additional data to the view.

Looking at this library as a possible alternative to my complex Adapter and ViewHolder, I don't see a good way to handle these more complex interactions. It is possible using the OnBindListener, but that is a single listener for all types. You end up having to do a switch statement and probably a cast. That is a code smell and what we would like to avoid by using a library like this.

I am trying to think what is the best way to accomplish this in a minimally invasive way. What I am envisioning is a version of the map call that also accepts a parameter of a class that extends LastAdapter.ViewHolder which has an onBind method that subclasses can override to do custom work (and FYI you should add support for unbinding as well to clean up things when a view is removed from the list).

Just sort of thinking out loud here.

How I can did it?

Hi :)
I'm using relam mobile database with lastadapter, and i caught RealmProxyError when i put ArrayList contains object extending RealmObject.
Is it impossible to use object which extends RealmObject?

// class Restaurant is extending RealmObject

ArrayList<Restaurant> arrayListForListView = new ArrayList<>();
realm = Realm.getDefaultInstance();
realm.beginTransaction();
RealmList<Restaurant> restaurants = realm.where(History.class).findAll().get(0).getHistoryList();
arrayListForListView.addAll(restaurants);        
new LastAdapter(arrayListForListView, BR.content)
                .map(Restaurant.class, new ItemType<HistoryItemBinding>(R.layout.history_item) {
                    @Override
                    public void onBind(Holder<HistoryItemBinding> holder) {
                        super.onBind(holder);
                        holder.getBinding().setPosition(holder.getLayoutPosition());
                        holder.getBinding().setActivity(HistoryItemActivity.this);
                    }
                })
                .into(binding.recyclerView);

We have many REST endpoints that return paginated data. This means we get eg 30 items from an API call, and need to load additional items from the server as the user scrolls. As far as I can see, this is not supported in LastAdapter.

I might be able to contribute this functionality. Do you think this makes sense in LastAdapter? And what should the API look like?

These are the necessary parameters for pagination:

• page loader callback (takes page number, returns list of new items)
• number of items remaining to auto-load (eg if this is set to 10, load when less than 10 items are remainig before the end of the list)
• first page number (optional, can be 0 by default)
• item count (optional, can be Integer.MAX_VALUE by default)

Hi, I am getting following error when I attempt to use the library in my project.

Library version 2.3.0
Android Studio: 3.1 Canary 8
Compile SDK 27
Gradle and KAPT version: 3.1.0-alpha08

:app:javaPreCompileDebug UP-TO-DATE C:\pahttoproject\app\build\generated\source\kapt\debug\android\databinding\DataBinderMapperImpl.java:7: error: cannot find symbol addMapper(new com.github.nitrico.lastadapter.DataBinderMapperImpl()); ^ symbol: class DataBinderMapperImpl location: package com.github.nitrico.lastadapter 1 error :app:compileDebugJavaWithJavac FAILED

Thank you :)

I'd like to able to bind presenter or other non-static handlers for views inside items:

  <variable
      name="presenter"
      type="com.example.module.somemodule.SomePresenter"/>

  <variable
      name="item"
      type="com.example.viewmodels.SomeViewModel"/>
</data>
...
<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    onClick="@{presenter.doSmth(item)}"/>

Getting hold of a view holder would allow such thing. But I can only access it in Type<ItemBinding>.onClick():

Type<SomeBinding> someType = new Type<>(R.layout.some_item);
someType.onClick(new Function1<ViewHolder<SomeBinding>, Unit>() {
  @Override
  public Unit invoke(ViewHolder<SomeItemBinding> viewHolder) {
    viewHolder.getBinding().setVariable(BR.presenter, presenter); // I need this somewhere outside
    return Unit.INSTANCE;
  }
});

In MVVM design mode, it's bad to attach View and Model. So it's any way to bind ViewModel?
eg:
`

<data>
    <variable name="item" type="com.github.nitrico.lastadapterproject.item.Header"/>
</data>

<TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="@{item.text}"/>

`
there is bind a Model Header,it's possible to bing a ViewModel like HeaderViewModel?

Having to do this is ugly:

        LastAdapter.with(content, BR.item)
                .map<ListItem>(R.layout.fragment_grid_list_item)
                .onBindListener(object : LastAdapter.OnBindListener {
                    override fun onBind(item: Any, view: View, pos: Int) {
                        doStuff()
                    }
                })
                .into(contentView)

I would much rather do this:

        LastAdapter.with(content, BR.item)
                .map<ListItem>(R.layout.fragment_grid_list_item)
                .onBindListener { item, view, pos -> doStuff() }
                .into(contentView)

Also, similar for click and long click listeners.

I can provide the PR if you approve this feature request.

`apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'

apply plugin: 'kotlin-kapt'

android {
compileSdkVersion 26
buildToolsVersion "26.0.1"
defaultConfig {
applicationId "com.fintech.assetvantage"
minSdkVersion 16
targetSdkVersion 26
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
dataBinding{
enabled true
}
}

dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation('com.android.support.test.espresso:espresso-core:3.0.1', {
exclude group: 'com.android.support', module: 'support-annotations'
})
implementation"org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
kapt 'com.android.databinding:compiler:3.0.0-beta6'
implementation 'com.github.nitrico.lastadapter:lastadapter:2.2.2'
}
`
My app:build.gradle file is like above.
support library dependacy gives error like Mixing version can lead to runtime crashes

All the item are displayed on the screen perfectly but first item (Item1) is not clicked.
Other items are clicked perfectly fine.
My code is like this:
MyActivity

private val mainList = listOf<String>("Item1", "Item2", "Item3")

LastAdapter(mainList, BR.item)
                .map<String, ItemMainListBinding>(R.layout.item_main_list) {
                    onBind {
                        onClick {
                            toast(it.binding.item.toString())
                        }
                    }
                }
                .into(mBinding.rcvMain)

item_main_list.xml

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <data>

        <variable
            name="item"
            type="String" />
    </data>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@android:color/white"
        android:foreground="?attr/selectableItemBackground"
        android:orientation="vertical">

        <TextView
            android:id="@+id/text_list_item"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:paddingBottom="8dp"
            android:paddingEnd="16dp"
            android:paddingLeft="16dp"
            android:paddingRight="16dp"
            android:paddingStart="16dp"
            android:paddingTop="8dp"
            android:text="@{item}"
            android:textColor="@android:color/black"
            android:textSize="22sp"
            tools:text="Item Name" />
    </LinearLayout>
</layout>

Hi, thanks for this excellent library; I would know if it possible to have two different layouts for a recyclerview item (one for portrait mode and one for landscape) handled with the same item model.
Thanks