B4A Library [Lib, Chargeable] Amir_RecyclerView

wimpie3 · Nov 21, 2019

I have discovered a bug in the parallax code example (Amir_RecyclerView HeaderParallax). Modify the following code:

B4X:

Sub Activity_Create(FirstTime As Boolean)
Recycler.Initializer("Amir").ListView.Build
Activity.AddView(Recycler,0,0,100%x,100%y)
Recycler.DividerHorizontal.Color(Colors.black).Size(0.5dip).Build

The last line causes an issue when you scroll... a strange line is floating around on the screen!

wimpie3 · Nov 27, 2019

Next issue:

B4X:

onItemLongClick

also causes onItemClick to fire. I think you should be able to return true/false in the long click sub, but it's not a function...

evbedp · Nov 28, 2019

i had a problem, i'm use recycler view for image slide when recycler onBind, position always in index 2... item count is 3. please help me

evbedp · Nov 29, 2019

evbedp said:
i had a problem, i'm use recycler view for image slide when recycler onBind, position always in index 2... item count is 3. please help me

finally i got the solution, i must create fake or empty image first in the contentlist. when image got the new resources, i'm just need to clear the contentlist and insert new resources to the contentlist. add source code recyclerview.adapter2.NotifDataSetChanged to refresh the view.

Hamied Abou Hulaikah · Nov 30, 2019

I already have xCustomlistview list, Can I use ARV with existing xCustomlistview?

alimanam3386 · Dec 12, 2019

maddy said:
Hey @Amir i am unable to filter the items in recyclerview actually i am binding recyclerview with Objects and i am trying to filer the list with the itemname provided in searchbar but the data is not updating in ui altough i am calling notifyadapteer.Here is attached code

B4X:

Sub modifydata(query As String) If rcyclrItems.Adapter=Null Then Return rvdata.Clear If query.Length=0 Then rvdata.AddAll(ItemList) Else 'iDetails.rvdata.AddAll(iDetails.rcyclrItems.Utils.FilterSearchList("",iDetails.ItemList).Trim.SkipLowerCase.StartsWith(query)) For i=0 To ItemList.Size-1 Dim iData As ItemData iData.Initialize iData=ItemList1.Get(i) If iData.itemname.StartsWith(query) Then rvdata.Add(iData) End If Next rcyclrItems.Utils.FilterSearchList("CustomType",rvdata) Log("SAize is"&rvdata.Size) End If callnotifier End Sub public Sub callnotifier rcyclrItems.Adapter2.NotifyDataSetChanged End Sub

Here idata is a custom type object like this
Type ItemData (itemno As String, itemname As String,qty As String,amount As String,Price As String)

As you can see in the Filter Sample "Main-RecyclerView\ARV-Main\Basic Sample\FilterSearch" you need to add items (which return in FilterSearchList method) to your recyclerView data list.
this code should works :

B4X:

Sub modifydata(query As String)
    If rcyclrItems.Adapter=Null Then Return
    rvdata.Clear
    If query.Length=0 Then
        rvdata.AddAll(ItemList)
    Else
      
        rvdata.AddAll(rcyclrItems.Utils.FilterSearchList("itemname",ItemList).Trim.SkipLowerCase.StartsWith(query))
        Log("SAize is"&rvdata.Size)
      
    End If
        callnotifier
End Sub

alimanam3386 · Dec 12, 2019

wimpie3 said:
Next issue:

B4X:

onItemLongClick

also causes onItemClick to fire. I think you should be able to return true/false in the long click sub, but it's not a function...

You are right, you can use reflection to add listeners :

next update I will fix it.

B4X:

Private Sub RV_onBindViewHolder (Parent As Panel,Position As Int)
  Parent.Tag = Position
  Dim r As Reflector
  r.Target = Parent
  r.SetOnLongClickListener("RV_LongClick")
End Sub
Private Sub RV_LongClick (tag As Object) As Boolean
  Log(tag)
  Return False
End Sub

alimanam3386 · Dec 12, 2019

HAH said:
I already have xCustomlistview list, Can I use ARV with existing xCustomlistview?

I never used "xCustomlistview" but I think it can be use with ARV

alimanam3386 · Dec 12, 2019

wimpie3 said:
I have discovered a bug in the parallax code example (Amir_RecyclerView HeaderParallax). Modify the following code:

B4X:

Sub Activity_Create(FirstTime As Boolean) Recycler.Initializer("Amir").ListView.Build Activity.AddView(Recycler,0,0,100%x,100%y) Recycler.DividerHorizontal.Color(Colors.black).Size(0.5dip).Build

The last line causes an issue when you scroll... a strange line is floating around on the screen!

It is Not a bug , use this code :

B4X:

Recycler.Initializer("Amir").ListView.Build
  Activity.AddView(Recycler,0,0,100%x,100%y)
  Recycler.DividerHorizontal.Color(Colors.black).Size(0.5dip).VisibilityProvider("RV").Build

Sub RV_DividerVisibility (Position As Int) As Boolean
  If Position=0 Then Return True Else Return False
End Sub

wimpie3 · Dec 18, 2019

I want to disable a finger scroll, and only let the user scroll with two buttons: "previous page" and "next page".

I've implemented this with recyclerView.LayoutFrozen=True. This disables the finger swipe.

When someone clicks on one of the buttons, I set LayoutFrozen to False, go to the next/previous page and freeze the layout again in the Sub recyclerView_onScrollStateChanged using

B4X:

If NewState=0 Then
    ' page scroll finished
    recyclerView.LayoutFrozen=True: ' disable scroll
End If

However, from time to time I get this error:

B4X:

java.lang.IllegalStateException: Do not setLayoutFrozen in layout or scroll

So my question is: am I overlooking something or is there another way to disable the finger scroll?

XbNnX_507 · Jan 9, 2020

Hi, i have not received an update with the latest version link in my email.

alimanam3386 · Jan 10, 2020

wimpie3 said:
I want to disable a finger scroll, and only let the user scroll with two buttons: "previous page" and "next page".

I've implemented this with recyclerView.LayoutFrozen=True. This disables the finger swipe.

When someone clicks on one of the buttons, I set LayoutFrozen to False, go to the next/previous page and freeze the layout again in the Sub recyclerView_onScrollStateChanged using

B4X:

If NewState=0 Then ' page scroll finished recyclerView.LayoutFrozen=True: ' disable scroll End If

However, from time to time I get this error:

B4X:

java.lang.IllegalStateException: Do not setLayoutFrozen in layout or scroll

So my question is: am I overlooking something or is there another way to disable the finger scroll?

With this following code you can disable RV touch

B4X:

RV.Listeners.AddOnItemTouchListener("RV")

Sub RV_onInterceptTouchEvent (Action As Int,X As Float,Y As Float,MotionEvent As Object) As Boolean 'Return true if you want disable touch
  Return True
End Sub

And If you want to disable only RV scroll , use this code (ViewHolder views are touchable)

B4X:

Sub RV_onInterceptTouchEvent (Action As Int,X As Float,Y As Float,MotionEvent As Object) As Boolean
  Dim jo As JavaObject = RV 
  jo.RunMethod("requestDisallowInterceptTouchEvent",Array(True))
  Return False
End Sub

Ashaz · Feb 7, 2020

alimanam3386 said:
Amir_RecyclerView_GooglePlay_Demo

Powered Just with Amir_RecyclerView and B4A !

Download the Demo

alimanam3386 said:
New b4a library!

RecyclerView, an important part of the sdk and android for making a custom list with better Layout , animation , and fixed for large data set.

Amir_RecyclerView released new version that we call it AX_RecyclerView.

version 1.0.8 is last update for Amir_RecyclerView and we will work on AX_RecyclerView only in future.

RecyclerView Android X : https://developer.android.com/reference/androidx/recyclerview/widget/RecyclerView

"RecyclerView is part of the v7 support library which means you can use it on anything that has api 7 and up"

View attachment 72645

Advantages of using recyclerview instead listview:

ViewHolder Pattern

In a ListView, it was recommended to use the ViewHolder pattern but it was never a compulsion. In case of RecyclerView, this is mandatory using the RecyclerView.ViewHolder class. This is one of the major differences between the ListView and the RecyclerView.

LayoutManager

This is another massive enhancement brought to the RecyclerView. In a ListView, the only type of view available is the vertical ListView. There is no official way to even implement a horizontal ListView.

Now using a RecyclerView, we can have a:

i) LinearLayoutManager - which supports both vertical and horizontal lists,
ii) StaggeredLayoutManager - which supports Pinterest like staggered lists,
iii) GridLayoutManager - which supports displaying grids as seen in Gallery apps.

And the best thing is that we can do all these dynamically as we want.

Item Animator

ListViews are lacking in support of good animations, but the RecyclerView brings a whole new dimension to it. Using the RecyclerView.ItemAnimator class, animating the views becomes so much easy and intuitive.

Item Decoration

In case of ListViews, dynamically decorating items like adding borders or dividers was never easy. But in case of RecyclerView, the RecyclerView.ItemDecorator class gives huge control to the developers but makes things a bit more time consuming and complex.

OnItemTouchListener

Intercepting item clicks on a ListView was simple, thanks to its AdapterView.OnItemClickListener interface. But the RecyclerView gives much more power and control to its developers by the RecyclerView. OnItemTouchListener but it complicates things a bit for the developer.

For more info:
https://developer.android.com/reference/android/support/v7/widget/RecyclerView

You can add plugins as library and connect it to Amir_RecyclerView using a line of code

Current Plugins :

Amir_RVHeaderFooter

Amir_RVToolbarParallax ( new )

Amir_RVEmptyView

Amir_RVCardSlider

Amir_RVCarousel

Amir_RVDiscrete

Amir_RVExpandable

Amir_RVFanLayout

Amir_RVFeature

Amir_RVItemPicker ( deprecated )

Amir_RVLayoutAnimation

Amir_RVMultiSelection

Amir_RVParallax

Amir_RVRefreshLayout

Amir_RVShimmer

Amir_RVSkidRight

Amir_RVSwipeCards

Amir_RVVegaLayout

Amir_RVViewPager

Amir_RVEchelon ( NEW )

Amir_WearableRecyclerView ( NEW )

Amir_RVDragItem

Amir_RVStickyHeader ( NEW )

Amir_RVAnimators ( NEW )

AX_RVSelection ( AndroidX )

AX_RVItemPicker ( AndroidX )

AX_RVPageIndicator ( New AndroidX )

Amir_RVChipsLayoutManager ( New )

AX_RVSwipeLayout 1.00 ( New AndroidX )

AX_RVHeaderParallax

Amir_RVCardViewAdapter

Demo and samples how to use :

Download the DEMO.apk ( updated in 28th of July 2019 )
Download Demo Source Code

Current version of Amir_RecyclerView : 1.1

Be sure to check the apk sample before purchasing.

You can have this fantastic library just with $25 ( only Amir_RecyclerView )
Full packages include all plugins only $35

Short documentations attached , special thanks to fredo

Pay

After your purchase please send me an email with your purchase detail ( alimanam@gmail.com )

i purchased amir recycleview.
now android play store sample gives below error.

--------------------
B4A Version: 9.50
Java Version: 8
Parsing code. (0.03s)
Building folders structure. (0.16s)
Compiling code. (0.05s)

ObfuscatorMap.txt file created in Objects folder.
Compiling layouts code. (0.00s)
Organizing libraries. (0.00s)
(Android Support Library)
Generating R file. (1.39s)
Compiling generated Java code. Error
javac 1.8.0_191
src\com\recyclerview\googleplaysample\itemrecyclerview.java:725: error: package androidx.recyclerview.widget does not exist
_rv.setObject((androidx.recyclerview.widget.RecyclerView)(group2.Get(index2)));}
^
Note: src\com\recyclerview\googleplaysample\starter.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
1 error

--------------------

alimanam3386 · Feb 7, 2020

Ashaz said:
i purchased amir recycleview.
now android play store sample gives below error.

--------------------
B4A Version: 9.50
Java Version: 8
Parsing code. (0.03s)
Building folders structure. (0.16s)
Compiling code. (0.05s)

ObfuscatorMap.txt file created in Objects folder.
Compiling layouts code. (0.00s)
Organizing libraries. (0.00s)
(Android Support Library)
Generating R file. (1.39s)
Compiling generated Java code. Error
javac 1.8.0_191
src\com\recyclerview\googleplaysample\itemrecyclerview.java:725: error: package androidx.recyclerview.widget does not exist
_rv.setObject((androidx.recyclerview.widget.RecyclerView)(group2.Get(index2)));}
^
Note: src\com\recyclerview\googleplaysample\starter.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
1 error

--------------------

Please update your sdk to androidX ( by sdk manager )

AndroidX SDK

Android Support Library was implemented and maintained in the last 8 years by Google. It includes a wide range of features and it hides many of the differences between the various Android versions. Android Support Library was replaced by AndroidX SDK. It is no longer maintained and new versions...

www.b4x.com

Ashaz · Feb 7, 2020

i updated , ,now getting below error .

ObfuscatorMap.txt file created in Objects folder.
Compiling layouts code. (0.00s)
Organizing libraries. (0.00s)
(AndroidX SDK)
Generating R file. Error
h:\mohib\setups\b4a\android sdk\android-sdk\tools\..\extras\b4a_remote\androidx\core\core\1.2.0\unpacked-core-1.2.0\res\values\values.xml:163: error: Attribute "fontVariationSettings" has already been defined

Plz. guide.

alimanam3386 · Feb 7, 2020

Ashaz said:
i updated , ,now getting below error .

ObfuscatorMap.txt file created in Objects folder.
Compiling layouts code. (0.00s)
Organizing libraries. (0.00s)
(AndroidX SDK)
Generating R file. Error
h:\mohib\setups\b4a\android sdk\android-sdk\tools\..\extras\b4a_remote\androidx\core\core\1.2.0\unpacked-core-1.2.0\res\values\values.xml:163: error: Attribute "fontVariationSettings" has already been defined

Plz. guide.

it looks like a problem with sdk file try to change targetSdkVersion to 28 and try again. if the problem still not solved try to search in forum.

asales · Feb 7, 2020

Ashaz said:
Error
h:\mohib\setups\b4a\android sdk\android-sdk\tools\..\extras\b4a_remote\androidx\core\core\1.2.0\unpacked-core-1.2.0\res\values\values.xml:163: error: Attribute "fontVariationSettings" has already been defined

You can see the same error here:

"fontVariationSettings" has already been defined

Hi Any one can help me to fix the below message ? My target SDK version is 29. I have downloaded all recommended files from B4A sdk manager. B4A Version: 9.50 Java Version: 8 Parsing code. (0.05s) Building folders structure. (0.02s) Compiling code. (0.08s) Compiling layouts code...

www.b4x.com

Ashaz · Feb 8, 2020

asales said:
You can see the same error here:

"fontVariationSettings" has already been defined

Hi Any one can help me to fix the below message ? My target SDK version is 29. I have downloaded all recommended files from B4A sdk manager. B4A Version: 9.50 Java Version: 8 Parsing code. (0.05s) Building folders structure. (0.02s) Compiling code. (0.08s) Compiling layouts code...

www.b4x.com

its solved. but now getting below error.

Organizing libraries. (0.00s)
(AndroidX SDK)
Generating R file. (0.00s)
Compiling generated Java code. Error
B4A line: 185
Activity.AddView(RecyclerView,0,0,100%x,100%y)
javac 1.8.0_191
src\com\recyclerview\googleplaysample\main.java:441: error: cannot access RecyclerView
mostCurrent._activity.AddView((android.view.View)(mostCurrent._vvvvvvvvvv5.getObject()),(int) (0),(int) (0),anywheresoftware.b4a.keywords.Common.PerXToCurrent((float) (100),mostCurrent.activityBA),anywheresoftware.b4a.keywords.Common.PerYToCurrent((float) (100),mostCurrent.activityBA));
^
class file for android.support.v7.widget.RecyclerView not found

asales · Feb 8, 2020

Did you jetified the library?
Search to "RecyclerView" in the forum to get similar thread and a possible answer to your issue.

Ashaz · Feb 9, 2020

asales said:
Did you jetified the library?
Search to "RecyclerView" in the forum to get similar thread and a possible answer to your issue.

Now, Its solved. i jetified the library.

B4A Library [Lib, Chargeable] Amir_RecyclerView

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