myinnos/alphabetindex-fast-scroll-recyclerview

A Powerful AlphabetIndex FastScroller Library for Android's RecyclerView!

Hello World 👋

I am Prabhakar Thota, Mobile Engineer, UI/UX with more than six years of experience in a broad range of industries. I believe in the quote, "Creativity is thinking up new things. Innovation is doing new things". The quote inspires me to be always creative, innovative and a learner. Also, I have built multiple android apps on my own, one of which has over 4.5 million downloads.

I am also an open-source enthusiast and maintainer. i learned a lot from the open-source community and i love how collaboration and knowledge sharing happened through open-source.

Certified for Play Store Listing by Google Play Academy #56586068

⚡ If you appreciate my work, consider buying me a cup of ☕ to keep me recharged 🤘 by GitHub or PayPal

alphabetindex-fast-scroll-recyclerview's Issues

Showing or Hiding the fast scroll

Hi, I want to hide the Fast scroll when user filtering the recycle view and I want to make the Fast scroll visible if the search edit text length is zero. Help me on showing and hiding the Fast scroll.

There Should be a option to change the text size for preview

when there is 3 words in preview it comes out from the layout of preview
so please can you add a text size option for preview or to resize preview.

This is not working in nestedscrollview

Horizontal Scroll

I Want to it to be horizontal like that is that possible

java.lang.Object[] cannot be cast to java.lang.String[]

java.lang.Object[] cannot be cast to java.lang.String[]

public void setAdapter(RecyclerView.Adapter adapter) {
if (adapter instanceof SectionIndexer) {
adapter.registerAdapterDataObserver(this);
mIndexer = (SectionIndexer) adapter;
mSections = (String[]) mIndexer.getSections(); <--- erro line(ava.lang.Object[] cannot be cast to java.lang.String[])
}
}

Can not set index bar fully transparent

Hello,

I've tried many ways but can not set background of index bar transparent.
I've used:
recyclerView.setIndexBarTransparentValue((float) 0);
recyclerView.setIndexBarColor("#00FFFFFF");
and tried to set it using xml too, but no luck.

Can you help me?
Thanks.

Suggestion: enable setting the indexBarText to be centered horizontally

I love this library, it saves my day, especially your callback allows me to handle position pinning by myself, so that I can list out all alphabets can calculate positions correspondingly even there are no such alphabet.

I found that the text in the text bar now aligns to the right; but I think it would be better for us to control this, like if we can center it horizontally in its parent.

Highlighting of the Alphabet indexers

Is it possible to highlight the alphabets of all items present in a given page rather than highlighting only one letter at a given page? Hope you understand my question..Check out the following screenshot to understand my question better: https://drive.google.com/open?id=0BxbQeDB6NGaYWTJ2M1JpM2d3NUE

show alphabets in left hand side

Please let me know how i can show alphabets of scroll recyclerview in left side android

When the keyboard opens the alphabets of index are squeezed

I have a edit text on top of this list. When the keyboard opens on clicking of edit text the alphabets of the index gets squeezed

misprint in setIndexbarHighLateTextColor

setIndexbarHighLateTextColor
I believe, it should be "Highlight"

Suggestions

I would have following suggestions:

• change your color attributes to be integers instead of strings
• remove the transparency parameter => just extract the transparency from the color itself

This breaks your current API though but would fit to the way nearly every android library works. I would add this to my pull request if that's ok for you

Quick question about color change

So currently I'm working on getting themes to change. Wanna throw something out the window.

Is there anyway to change the color of the text on the scroller? Is there also a way to call from colors.xml to change the color?

Letters in IndexBar is not Clicked

Please help , any letter is not clicked in my FastScrollRecyclerView

Initialization for Context-constructor

Please add

init(context, null)

to the base constructor with Context argument only in class IndexFastScrollRecyclerView

Crash while scrolling index & filter

I found there is a crash while scrolling using the index letters(at the right side of the view) and filter.
Please take a look when you get a chance.
Added error log

2019-10-31 12:58:49.414 12373-12373/? E/application: Fatal Exception occurred: length=2; index=24
2019-10-31 12:58:49.417 12373-12373/? E/application: Stack Trace: java.lang.ArrayIndexOutOfBoundsException: length=2; index=24
at in.myinnos.alphabetsindexfastscrollrecycler.IndexFastScrollRecyclerSection.draw(IndexFastScrollRecyclerSection.java:94)
at in.myinnos.alphabetsindexfastscrollrecycler.IndexFastScrollRecyclerView.draw(IndexFastScrollRecyclerView.java:105)
at android.view.View.updateDisplayListIfDirty(View.java:19315)
at android.view.View.draw(View.java:20093)
at android.view.ViewGroup.drawChild(ViewGroup.java:4421)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4207)
at android.view.View.draw(View.java:20373)
at android.view.View.updateDisplayListIfDirty(View.java:19315)
at android.view.View.draw(View.java:20093)
at android.view.ViewGroup.drawChild(ViewGroup.java:4421)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4207)
at android.view.View.draw(View.java:20373)
at android.view.View.updateDisplayListIfDirty(View.java:19315)
at android.view.View.draw(View.java:20093)
at android.view.ViewGroup.drawChild(ViewGroup.java:4421)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4207)
at android.view.View.updateDisplayListIfDirty(View.java:19306)
at android.view.View.draw(View.java:20093)
at android.view.ViewGroup.drawChild(ViewGroup.java:4421)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4207)
at android.view.View.updateDisplayListIfDirty(View.java:19306)
at android.view.View.draw(View.java:20093)
at android.view.ViewGroup.drawChild(ViewGroup.java:4421)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4207)
at android.view.View.updateDisplayListIfDirty(View.java:19306)
at android.view.View.draw(View.java:20093)
at android.view.ViewGroup.drawChild(ViewGroup.java:4421)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4207)
at android.view.View.updateDisplayListIfDirty(View.java:19306)
at android.view.View.draw(View.java:20093)
at android.view.ViewGroup.drawChild(ViewGroup.java:4421)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4207)
at android.view.View.updateDisplayListIfDirty(View.java:19306)
at android.view.View.draw(View.java:20093)
at android.view.ViewGroup.drawChild(ViewGroup.java:4421)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4207)
at android.view.View.updateDisplayListIfDirty(View.java:19306)
at android.view.View.draw(View.java:20093)
at android.view.ViewGroup.drawChild(ViewGroup.java:4421)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4207)
at android.view.View.draw(View.java:20373)
at com.android.internal.policy.DecorView.draw(DecorView.java:980)
at android.view.View.updateDisplayListIfDirty(View.java:19315)
at android.view.ThreadedRenderer.updateViewTreeDisplayList(ThreadedRenderer.java:686)
at android.view.ThreadedRenderer.updateRootDisplayList(ThreadedRenderer.java:692)
at android.view.ThreadedRenderer.draw(ThreadedRenderer.java:800)
at android.view.ViewRootImpl.draw(ViewRootImpl.java:3496)
at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:3283)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2818)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1780)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7827)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:911)
at android.view.Choreographer.doCallbacks(Choreographer.java:723)
at android.view.Choreographer.doFrame(Choreographer.java:658)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:897)
at android.os.Handler.handleCallback(Handler.java:789)
at android.os.Handler.dispatchMessage(Handler.java:98)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6944)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)

crash when list size zero and click on index bar

When list size zero and click on index bar crash app even hide the index bar and set width 0

How to scroll at specific section

I want to scroll it to "F" section when it opens, Is it possible?
have tried with
mAdapter?.let { it.getPositionForSection(6) it.notifyDataSetChanged() }

mAdapter?.let { it.getSectionForPosition(6) it.notifyDataSetChanged() }

object

Letters overlapping when keyboard opened

OnScroll AutoHide Feature

Hi, It would be very helpful feature if we have autohide flag for automatically show scroller on scroll and hide when not scrolling. Thank you

Example:
https://github.com/timusus/RecyclerView-FastScroll

Make the indexer wrap content instead of matching parent

Hello,
is there any chance to change the appearance of the indexer? It is always stretching across the whole screen, which makes it appear silly, if there are only a few letters to display

setIndexbarMargin doesn't work

Hi,

I am with AlphabetIndex-Fast-Scroll-RecyclerView:1.0.8 and I have a problem when I try to remove the margin of the IndexBar. I have tried to set the parameter in the layout and the class but neither work.

This is how I put in the layout:
Sometimes I could see how the parameter is apply but when I exit and open the layout again, the IndexBar has margin again.

<in.myinnos.alphabetsindexfastscrollrecycler.IndexFastScrollRecyclerView
android:id="@+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:setIndexbarMargin="0"
app:setIndexbarWidth="0"
/>

This is how I put in the class:

//Setup recyclerViewFastScroll
mBinding.incRecyclerView.recyclerView.setIndexBarTransparentValue((float) 1.0);
mBinding.incRecyclerView.recyclerView.setIndexBarCornerRadius(0);
mBinding.incRecyclerView.recyclerView.setIndexbarMargin(0);
mBinding.incRecyclerView.recyclerView.setPreviewPadding(0);
mBinding.incRecyclerView.recyclerView.setIndexBarColor("#"+Integer.toHexString(ContextCompat.getColor(mActivity, R.color.color_primary_dark)));
mBinding.incRecyclerView.recyclerView.setIndexbarHighLateTextColor("#"+Integer.toHexString(ContextCompat.getColor(mActivity, R.color.color_eab817)));
mBinding.incRecyclerView.recyclerView.setIndexBarHighLateTextVisibility(true);
mBinding.incRecyclerView.recyclerView.setIndexBarVisibility(true);

I execute in Android 4.4.2 and Android 6.0.1.

What's the problem?

Failed to resolve: com.github.myinnos:AlphabetIndex-Fast-Scroll-RecyclerView:1.0.9

Hello
I am getting this error when I sync gradle file
Failed to resolve: com.github.myinnos:AlphabetIndex-Fast-Scroll-RecyclerView:1.0.9

how can i give border only in alphabetic indexer

how can i give border only in alphabetic indexer
now want full background color only border color

Move creating new objects from Draw method

My suggestion is to
avoid of creating new objects into "draw" method of IndexFastScrollRecyclerSection.

Unable to compile gradle: Failed to resolve

stroller of alphabet got compressed

hello, I am facing an issue while using this library that I am using edit text with this recyclerView so when I click on edit text and keyboard opens up the scroller of alphabets got compressed can you please guide me to fix it.
-thanks for making this library as well

Fast scroll does not work with CoordinatorLayout and CollapsingToolbar

getSections() should be called if adapter calls notifyDataSetChanged()

Normally we set adapter in recyclerview first before we downloaded all items from internet, and set the list later on which at the same time calls notifyDataSetChanged().

But I found that the indexBar doesn't update accordingly. In fact since this is the case, the "sectionPositions" arraylist always remains empty.

not working in appCompect

    mRecyclerView.setPreviewColor("#00FF00");
    mRecyclerView.setPreviewTextColor("#FFFFFF");
    mRecyclerView.setPreviewTransparentValue(0.6f);

@Not working in appCompect

Failed to resolve library

As per your description, I am integrating this library but I got following error.

This is my build.gradle(project) file:
allprojects { repositories { ... maven { url "https://jitpack.io" } } }

build.gradel(app) file

implementation 'com.github.myinnos:AlphabetIndex-Fast-Scroll-RecyclerView:1.0.94'

ERROR: Failed to resolve: com.github.myinnos:AlphabetIndex-Fast-Scroll-RecyclerView:1.0.94

I have 2 item of itemList then not display all alphabet in indexView

https://drive.google.com/file/d/0B1Wbi3_6p51OYnIyOUhLUzRPWm8/view?usp=sharing

Release 1.0.9 and 1.0.91 are not compiled at jitpack

See here:

https://jitpack.io/#myinnos/AlphabetIndex-Fast-Scroll-RecyclerView

Respectively those two logs:
https://jitpack.io/com/github/myinnos/AlphabetIndex-Fast-Scroll-RecyclerView/1.0.9/build.log
https://jitpack.io/com/github/myinnos/AlphabetIndex-Fast-Scroll-RecyclerView/1.0.91/build.log

Using cursor instead of Arraylist scroller shows but does nothing when clicked

What method or component handles the responsibility of the onclick for the alphabet scroller. I have the scroller with all the alphatbets due to successful implementation of the getSections method however I am not sure where the onclick of the scroller functionality is designated. Thanks for your assistance.

吸顶

看着文章过来的建议加入吸顶效果

Downloading

When I was putting the line
compile 'com.github.myinnos:AlphabetIndex-Fast-Scroll-RecyclerView:1.0'
into the gradle, Android Studio was yelling at me
Error:(44, 13) Failed to resolve: com.github.myinnos:AlphabetIndex-Fast-Scroll-RecyclerView:1.0

Include numbers

Is it possible to include numbers 0-9 in the sort?

should it work with pagination

I have pagination functionality with recyclerview. how can i manage this recyclerview with api with pagination ?

onBindViewHolder position value not correctly assigning values

I have a function that looks something like the one below

@OverRide
public void onBindViewHolder(@nonnull ProcedureViewHolder holder, int position) {
if(position % 17 == 0){
holder.procedureName.setTextColor(context.getResources().getColor(R.color.com_facebook_blue));
}
}

and when I run it, the rows that change text color are seemingly random. There are several places where 2 or 3 rows in a row have blue text. For sure there are more than every 17th items whos text is blue

Issues: Index Bar overlapping content || Index Bar Height Matches view Parent

1. The Index Bar overlaps content. If your ViewHolder layout doesn't have a margin, the Index Bar gets in the way of the content. Its even worse if you give the Index Bar a margin. This is true both for Vertical Views and Grid Views. Could you possibly add and attribute like app:indexBarContentMargin so that the users can set the Index Bar margin from viewHolder content.

2. When you have few items in your RecyclerView, there are of course less sections for the Index Bar to display. Could you add an option/attribute like app:wrapIndexBarSectionText so that the Index Bar can wrap it's height to the amount of section content in it. Possibly even adding the option setIndexBarGravity="TOP", setIndexBarGravity="Center" and setIndexBarGravity="Bottom".
   Currently the Index Bar spans the full height of the view regardless of how many sections there are to show in it. It looks quite bad when you have few items in your RecyclerView.

Thank you.

Failed to resolve: com.github.myinnos:Alphabet Index-Fast-Scroll-RecyclerView:1.0.94

Not able to setup following dependance for AndroidX vesrion.
implementation 'com.github.myinnos:AlphabetIndex-Fast-Scroll-RecyclerView:1.0.94'

ERROR: Failed to resolve: com.github.myinnos:AlphabetIndex-Fast-Scroll-RecyclerView:1.0.95

ERROR: Failed to resolve: com.github.myinnos:AlphabetIndex-Fast-Scroll-RecyclerView:1.0.95
Hi man . I am facing this issue when i sync please help me from this

Sometimes the bar is empty

I have an app that is constantly running and showing/hiding it's view on demand (a sidebar like app).

What I see is that rarely the fast scroller shows up empty after some time (after many days, hardly reproduceable).

Any ideas what could cause this? I have no idea yet, did check the fast scrollers code but did not find anything that could cause this..

setIndexbarWidth() is not using a correct density

According to README and the code inside, I think setIndexbarWidth takes dp as input instead of pixel, since I saw you multiplied this input by mDensity.

However, I tested on 2 devices with different density, it is very clear that the index bar has very different size. The size on a higher density device is much smaller.

I therefore think the conversion from dp to pixel is incorrect.

I usually use the below code to convert from dp to pixel:
public static int pixelFromDp (Resources r, int dp) { return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, r.getDisplayMetrics()); }

Feature: Highlight a letter on the section right panel during scrolling the list

I suggest to highlight the letter on the section view (right panel) during scrolling.
it's such a good way to show user where is the current scroll/section position.

ViewHolder crosses the indicator

Is there any way to prevent a holder from crossing the indicator except margin_end?

can i add separator in alphabetic indexer?

can i add separator in alphabetic indexer?

Implementing the library

The following error occurs when trying to implement:
Could not find com.github.myinnos:AlphabetIndex-Fast-Scroll-RecyclerView:1.0.94.
Searched in the following locations:

• file:/C:/sdk/extras/m2repository/com/github/myinnos/AlphabetIndex-Fast-Scroll-RecyclerView/1.0.94/AlphabetIndex-Fast-Scroll-RecyclerView-1.0.94.pom
• file:/C:/sdk/extras/m2repository/com/github/myinnos/AlphabetIndex-Fast-Scroll-RecyclerView/1.0.94/AlphabetIndex-Fast-Scroll-RecyclerView-1.0.94.jar
• file:/C:/sdk/extras/google/m2repository/com/github/myinnos/AlphabetIndex-Fast-Scroll-RecyclerView/1.0.94/AlphabetIndex-Fast-Scroll-RecyclerView-1.0.94.pom
• file:/C:/sdk/extras/google/m2repository/com/github/myinnos/AlphabetIndex-Fast-Scroll-RecyclerView/1.0.94/AlphabetIndex-Fast-Scroll-RecyclerView-1.0.94.jar
• file:/C:/sdk/extras/android/m2repository/com/github/myinnos/AlphabetIndex-Fast-Scroll-RecyclerView/1.0.94/AlphabetIndex-Fast-Scroll-RecyclerView-1.0.94.pom
• file:/C:/sdk/extras/android/m2repository/com/github/myinnos/AlphabetIndex-Fast-Scroll-RecyclerView/1.0.94/AlphabetIndex-Fast-Scroll-RecyclerView-1.0.94.jar
• https://dl.google.com/dl/android/maven2/com/github/myinnos/AlphabetIndex-Fast-Scroll-RecyclerView/1.0.94/AlphabetIndex-Fast-Scroll-RecyclerView-1.0.94.pom
• https://dl.google.com/dl/android/maven2/com/github/myinnos/AlphabetIndex-Fast-Scroll-RecyclerView/1.0.94/AlphabetIndex-Fast-Scroll-RecyclerView-1.0.94.jar
• https://jcenter.bintray.com/com/github/myinnos/AlphabetIndex-Fast-Scroll-RecyclerView/1.0.94/AlphabetIndex-Fast-Scroll-RecyclerView-1.0.94.pom
• https://jcenter.bintray.com/com/github/myinnos/AlphabetIndex-Fast-Scroll-RecyclerView/1.0.94/AlphabetIndex-Fast-Scroll-RecyclerView-1.0.94.jar

Conflict with allowBackup and supportsRTL in manifest file.

For some applications that have allowBackup and/or supportsRtl set to false we receive the following error when trying to use your library:

 Manifest merger failed : Attribute application@allowBackup value=(false) from [:corevero] AndroidManifest.xml:12:9-36
  	is also present at [com.github.myinnos:AlphabetIndex-Fast-Scroll-RecyclerView:1.0.8] AndroidManifest.xml:12:9-35 value=(true).
  	Suggestion: add 'tools:replace="android:allowBackup"' to <application> element at manifestMerger3423917709392243790.xml:7:5-9:19 to override.

Would it be possible to have those two lines* removed from the manifest of the library? This should resolve the issue for those with different settings without causing any new issues afaik.

Thanks

*android:allowBackup=“true”
android:supportsRtl=“true”