center items horizontally in RecyclerView(using GridLayoutManager)

center items horizontally in RecyclerView(using GridLayoutManager) - android

I'm trying to center all my items horizontally for each row in RecyclerView
I tried many things: RelativeLayout as a parent, then use layout_centerInParent, use the basic android:layout_gravity="center", try to add some space element,using weights and .... in
item_row.xml
but I didn't succeed :(
What i have
What i want
In activity
recyclerView.setLayoutManager(new GridLayoutManager(this, 3));
item_row.xml
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="#+id/cardView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
card_view:cardCornerRadius="2dp"
card_view:cardElevation="4dp"
card_view:cardUseCompatPadding="true">
<!-- Recycler View Item Row -->
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView
android:id="#+id/imgThumbnail"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:adjustViewBounds="true"
android:background="#android:color/black" />
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="item name"
android:id="#+id/txtName"
android:layout_margin="5dp"
android:singleLine="false"
android:lines="2"
android:gravity="center" />
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="0dp"
android:layout_height="match_parent"
android:textAppearance="?android:attr/textAppearanceSmall"
android:id="#+id/txtCategory"
android:textStyle="italic"
android:textColor="#496fa9"
android:text="subtitle"
android:layout_weight="1"
android:gravity="center_vertical"
android:paddingLeft="10dp"
android:layout_gravity="center" />
<ImageButton
android:id="#+id/imageButton"
android:layout_width="48dp"
android:layout_height="wrap_content"
android:background="#android:color/black"
android:adjustViewBounds="true"
android:scaleType="fitCenter"
android:padding="8dp"/>
</LinearLayout>
</LinearLayout>
</LinearLayout>
</android.support.v7.widget.CardView>
i googled a lot and found this answer but actually i don't know how to create a LinearLayout for each row of items!
is that the best solution?
any other idea?

you can use a SpanSizeLookup to make views/items with different widths for your grid view. So with that you can do some cleverness with empty views to adjust accordingly. Might be more complicate or simpler depending on how variable your layout actually is.
reference: https://developer.android.com/reference/android/support/v7/widget/GridLayoutManager.SpanSizeLookup.html
for this specific case you show on your drawing you would do something like:
GridLayoutManager lm = new GridLayoutManager(context, 6);
lm.setSpanSizeLookup(new MySizeLookup());
public static class MySizeLookup extends SpanSizeLookup {
public int getSpanSize(int position) {
if(position >= 0 && position <= 2) {
return 2;
} else if (position == 3 || position == 6) {
return 1;
} else {
return 2;
}
}
}
and with that you'll have to make on your adapter, the position 3 and 6 to be an empty/invisible element. Something like new View(context); just to occupy that extra space

Use the gridLayoutManager = new GridLayoutManager(context,6) and override setSpanSizeLookup.
Example:
int totalSize=list.size();
gridLayoutManager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
#Override
public int getSpanSize(int position) {
int span;
span = totalSize % 3;
if (totalSize < 3) {
return 6;
} else if (span == 0 || (position <= ((totalSize - 1) - span))) {
return 2;
} else if (span == 1) {
return 6;
} else {
return 3;
}
}
});
This will work if you want to display 3 items in a row and remaining in the center of the grid.
Change the grid layout manager span counts accordingly your requirement.

GridLayoutManager layoutManager = new GridLayoutManager(getContext(), 6);
final int totalSize = customList.size();
layoutManager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
#Override
public int getSpanSize(int position) {
int extra;
extra = totalSize % 3;
if(extra == 0)
return 2;
if (totalSize - (position + 1) < extra) {
return (int) 6 / extra;
}
return 2;
}
});
recycler.setLayoutManager(layoutManager);

GridLayoutManager layoutManager = new GridLayoutManager(getContext(), 6);
final int totalSize = customList.size();
layoutManager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
#Override
public int getSpanSize(int position) {
int rows = Math.round((totalSize / 3f) + 0.4f);
int itemInRow = Math.round(((position + 1) / 3f) + 0.4f);
if (rows == 1 || rows == itemInRow) {
int span = totalSize % 3;
if (span == 0) {
return 2;
}
return 6 / span;
}
return 2;
}
});

Related

Cardview doesn't have any affect on items

I'm trying to make my RecyclerView prettier, so I added a CardView. However, I don't see any changes when I ran the app, the UI looks like as if there's no CardView at all - there is not separation between the items. Can you please suggest what's wrong with my code here?
This is my list_item.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:card_view="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/card_view"
android:layout_gravity="center"
android:layout_width="match_parent"
android:layout_height="wrap_content"
card_view:cardCornerRadius="4dp"
card_view:cardElevation="6dp">
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:app="http://schemas.android.com/apk/res-auto">
<android.support.v7.widget.AppCompatTextView
android:id="#+id/link_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"
android:padding="1dp"
android:layout_marginBottom="10dp"
android:layout_marginStart="10dp"
android:text="#string/title_place_holder"/>
<LinearLayout
android:layout_below="#id/link_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<android.support.v7.widget.AppCompatImageView
android:id="#+id/link_img"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginEnd="10dp"
android:layout_gravity="center"
app:srcCompat="#drawable/ic_launcher_background"/>
<android.support.v7.widget.AppCompatTextView
android:id="#+id/link_summary"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:textSize="15sp"
android:padding="1dp"
android:text="#string/summary_place_holder"/>
</LinearLayout>
</RelativeLayout>
</android.support.v7.widget.CardView>
This is how I initialize my RecylerView:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mRecyclerView = (RecyclerView)findViewById(R.id.recyclerView);
mAdapter = new PostsAdapter(mPostList);
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getApplicationContext());
mRecyclerView.setLayoutManager(layoutManager);
mRecyclerView.setAdapter(mAdapter);
preparePostData();
}

This can be achieved with a 1 line change in xml applied to the CardView element applying a margin.
android:layout_margin"#dimen/default_margin"
With your code:
<android.support.v7.widget.CardView xmlns:card_view="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/card_view"
android:layout_gravity="center"
android:layout_width="match_parent"
android:layout_height="wrap_content"
card_view:cardCornerRadius="4dp"
card_view:cardElevation="6dp"
android:layout_margin"#dimen/default_margin">
And in the dimens resources file
<?xml version="1.0" encoding="UTF-8"?>
<resources>
<dimen name="default_margin">10dp</dimen>
</resources>

I have made changes in your code, please try below code
in place on
card_view:cardCornerRadius="4dp"
card_view:cardElevation="6dp"
I've changed to below
app:cardCornerRadius="4dp"
app:cardElevation="6dp"
app:cardUseCompatPadding="true"
Just replace below layout code
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com /apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/card_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
app:cardCornerRadius="4dp"
app:cardElevation="6dp"
app:cardUseCompatPadding="true">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.AppCompatTextView
android:id="#+id/link_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"
android:padding="1dp"
android:layout_marginBottom="10dp"
android:layout_marginStart="10dp"
android:text="#string/title_place_holder"/>
<LinearLayout
android:layout_below="#id/link_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<android.support.v7.widget.AppCompatImageView
android:id="#+id/link_img"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginEnd="10dp"
android:layout_gravity="center"
app:srcCompat="#drawable/ic_launcher_background"/>
<android.support.v7.widget.AppCompatTextView
android:id="#+id/link_summary"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:textSize="15sp"
android:padding="1dp"
android:text="#string/summary_place_holder"/>
</LinearLayout>
</RelativeLayout>
</android.support.v7.widget.CardView>

You need item decoration in RecyclerView with equal spacing around item!
Note : make sure yourRecyclerView background is different that item background
EqualSpacingItemDecoration.java
import android.graphics.Canvas;
import android.graphics.Rect;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
public class EqualSpacingItemDecoration extends RecyclerView.ItemDecoration {
private final int top;
private final int left;
private final int bottom;
private final int right;
private int displayMode;
public static final int HORIZONTAL = 0;
public static final int VERTICAL = 1;
public static final int GRID = 2;
public EqualSpacingItemDecoration(int top, int left, int bottom, int right) {
this(top, left, bottom, right, -1);
}
public EqualSpacingItemDecoration(int top, int left, int bottom, int right, int displayMode) {
this.top = top;
this.left = left;
this.bottom = bottom;
this.right = right;
this.displayMode = displayMode;
}
#Override
public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
int position = parent.getChildViewHolder(view).getAdapterPosition();
int itemCount = state.getItemCount();
RecyclerView.LayoutManager layoutManager = parent.getLayoutManager();
setSpacingForDirection(outRect, layoutManager, position, itemCount);
}
private void setSpacingForDirection(Rect outRect,
RecyclerView.LayoutManager layoutManager,
int position,
int itemCount) {
// Resolve display mode automatically
if (displayMode == -1) {
displayMode = resolveDisplayMode(layoutManager);
}
switch (displayMode) {
case HORIZONTAL:
outRect.left = left;
outRect.right = position == itemCount - 1 ? right : 0;
outRect.top = top;
outRect.bottom = bottom;
break;
case VERTICAL:
outRect.left = left;
outRect.right = right;
outRect.top = top;
outRect.bottom = position == itemCount - 1 ? bottom : 0;
break;
case GRID:
if (layoutManager instanceof GridLayoutManager) {
GridLayoutManager gridLayoutManager = (GridLayoutManager) layoutManager;
int cols = gridLayoutManager.getSpanCount();
int rows = itemCount / cols;
outRect.left = left;
outRect.right = position % cols == cols - 1 ? right : 0;
outRect.top = top;
outRect.bottom = position / cols == rows - 1 ? bottom : 0;
}
break;
}
}
private int resolveDisplayMode(RecyclerView.LayoutManager layoutManager) {
if (layoutManager instanceof GridLayoutManager) return GRID;
if (layoutManager.canScrollHorizontally()) return HORIZONTAL;
return VERTICAL;
}
#Override
public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State state) {
super.onDraw(c, parent, state);
}
}
Use like :
...
mRecyclerView..addItemDecoration(new EqualSpacingItemDecoration(12,12,12,12,1))
...

Just simply use app:cardUseCompatPadding="true" in CardView tag.

Try this in your manifest application tag.
android:hardwareAccelerated="true"

Get first visible view inside of NestedScrollView

I have a next problem.
I'm trying to get first visible item inside of NestedScrollView. Actually, first and only view inside is LinearLayout (because scroll view can hold only one direct child), but I'm trying to get first visible item inside it. I was searching a lot but without success.
With this approach, I want to avoid using RecyclerView inside another RecyclerView. I found it is a bad practice.
P.S. I don't want to use ListView or RecyclerView
Thanks in advance

Okay, I found a solution:
final Rect scrollBounds = new Rect();
questionAndAnswerScroll.getHitRect(scrollBounds);
questionAndAnswerScroll.setOnScrollChangeListener(new NestedScrollView.OnScrollChangeListener() {
#Override
public void onScrollChange(NestedScrollView v, int scrollX, int scrollY, int oldScrollX, int oldScrollY) {
for (int i = 0; i < questionAndAnswerHolder.getChildCount(); i++) {
View childView = questionAndAnswerHolder.getChildAt(i);
if (childView != null) {
if (childView.getLocalVisibleRect(scrollBounds)) {
//Here is the position of first visible view
positionToScroll = i;
break;
}
}
}
}
});

for this layout
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/nestedScrollView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:id="#+id/ly"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="100dp"
android:text="text_1"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="100dp"
android:text="text_2" />
<TextView
android:layout_width="wrap_content"
android:layout_height="100dp"
android:text="text_3" />
<TextView
android:layout_width="wrap_content"
android:layout_height="100dp"
android:text="text_4" />
<TextView
android:layout_width="wrap_content"
android:layout_height="100dp"
android:text="text_5" />
<TextView
android:layout_width="wrap_content"
android:layout_height="100dp"
android:text="text_6" />
<TextView
android:layout_width="wrap_content"
android:layout_height="100dp"
android:text="text_7" />
<TextView
android:layout_width="wrap_content"
android:layout_height="100dp"
android:text="text_8" />
<TextView
android:layout_width="wrap_content"
android:layout_height="100dp"
android:text="text_9" />
<TextView
android:layout_width="wrap_content"
android:layout_height="100dp"
android:text="text_10" />
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
and use this code
public class MainActivity extends AppCompatActivity {
NestedScrollView nestedScrollView;
LinearLayout linearLayout;
ArrayList<Integer> childrenY = new ArrayList<>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//find view
nestedScrollView = (NestedScrollView) findViewById(R.id.nestedScrollView);
linearLayout = (LinearLayout) nestedScrollView.getChildAt(0);
//get Y Children and save
for (int i = 0; i < linearLayout.getChildCount(); i++) {
int childrenY = 0;
for (int j = 0; j < i; j++) {
TextView tv = (TextView) linearLayout.getChildAt(j);
Log.i("--------", tv.getText().toString());
childrenY += tv.getLayoutParams().height;
}
this.childrenY.add(childrenY);
}
//add Scroll Change Listener
nestedScrollView.setOnScrollChangeListener(new NestedScrollView.OnScrollChangeListener() {
#Override
public void onScrollChange(NestedScrollView v, int scrollX, int scrollY, int oldScrollX, int oldScrollY) {
for (int i = 0; i < childrenY.size(); i++) {
if (scrollY < childrenY.get(i)) {
Log.i("++++++++++", ((TextView) linearLayout.getChildAt(i-1)).getText().toString());
return;
}
}
}
});
}
}

If you want to find the first visible item inside inner LinearLayout of NestedScrollView, you may try this:
if(nsv.getChildCount() > 0) {
ViewGroup vg = (ViewGroup) nsv.getChildAt(0);
for (int i = 0; i < vg.getChildCount(); i++) {
if(vg.getChildAt(i).getVisibility()==View.VISIBLE)
return vg.getChildAt(i);
}
}
return null;
Where nsv is your NestedScrollView.

How to give space between gridview in through java

How do i get perfect aligning between the gridView items, i have added the gridview using java and it's base adapter is set in which i added the image and textview.
Xml Code:
<android.support.v7.widget.CardView
android:layout_width="180dp"
android:layout_height="200dp"
android:layout_margin="5dp"
android:orientation="vertical"
app:cardCornerRadius="5dp"
app:cardElevation="5dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical">
<ImageView
android:id="#+id/ImageWomenItem"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="true"
android:scaleType="fitXY"
android:src="#drawable/womenone" />
</LinearLayout>
<TextView
android:id="#+id/itemName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Red Top"
android:textColor="#8e8d8d"
android:textSize="15dp" />
</LinearLayout>
</android.support.v7.widget.CardView>
This is Activity code in which i declared the recylerview and set it's adapter
Java code:
recyclerView = (RecyclerView) view.findViewById(R.id.recyclerViewClothes);
recyclerView.setHasFixedSize(true);
mLayoutManager = new GridLayoutManager(getActivity(), 2);
recyclerView.setLayoutManager(mLayoutManager);
mAdapter = new GridAdapter();
recyclerView.setAdapter(mAdapter);

Use Space Decoration Class For That
public class SpacesItemDecoration extends RecyclerView.ItemDecoration {
private int space;
public SpacesItemDecoration(int space) {
this.space = space;
}
#Override
public void getItemOffsets(Rect outRect, View view,
RecyclerView parent, RecyclerView.State state) {
outRect.left = space;
outRect.right = space;
outRect.bottom = space;
// Add top margin only for the first item to avoid double space between items
if (parent.getChildLayoutPosition(view) == 0) {
outRect.top = space;
} else {
outRect.top = 0;
}
}
}
Your Activity Where You Set Your Adapter
int spacing = getResources().getDimensionPixelSize(R.dimen.spacing);
recyclerview.addItemDecoration(new SpacesItemDecoration(spacing));
Specify in dimen.xml
<dimen name="spacing">5px</dimen>
Xml Code:
<android.support.v7.widget.CardView
android:layout_width="175dp"
android:layout_height="200dp"
android:orientation="vertical"
app:cardCornerRadius="5dp"
app:cardElevation="5dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical">
<ImageView
android:id="#+id/ImageWomenItem"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="true"
android:scaleType="fitXY"
android:src="#drawable/womenone" />
</LinearLayout>
<TextView
android:id="#+id/itemName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Red Top"
android:textColor="#8e8d8d"
android:textSize="15dp" />
</LinearLayout>
</android.support.v7.widget.CardView>

Try this,
recyclerView = (RecyclerView) findViewById(R.id.recyclerView );
recyclerView .setLayoutManager(new GridLayoutManager(getActivity(), 2));
int spanCount = 2;
int spacing_left = 10;
int spacing_top=15;
recyclerView.addItemDecoration(new GridSpacingItemDecoration(spanCount, spacing_left, spacing_top));
GridSpacingItemDecoration:
/* set spacing for grid view */
public class GridSpacingItemDecoration extends RecyclerView.ItemDecoration {
final private int spanCount, spacing, spacing_top;
final private boolean includeEdge;
public GridSpacingItemDecoration(int spanCount, int spacing_left, int spacing_top) {
this.spanCount = spanCount;
this.spacing = spacing_left;
this.includeEdge = true;
this.spacing_top = spacing_top;
}
#Override
public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
int position = parent.getChildAdapterPosition(view); // item phases_position
int column = position % spanCount; // item column
if (includeEdge) {
outRect.left = spacing - column * spacing / spanCount;
outRect.right = (column + 1) * spacing / spanCount;
if (position < spanCount) { // top edge
outRect.top = spacing_top;
}
outRect.bottom = spacing_top; // item bottom
} else {
outRect.left = column * spacing / spanCount;
outRect.right = spacing - (column + 1) * spacing / spanCount;
if (position >= spanCount) {
outRect.top = spacing_top; // item top
}
}
}
}

Add padding to your root layout of adapter xml.
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="8dp">
<android.support.v7.widget.CardView
app:cardCornerRadius="5dp"
app:cardElevation="5dp"
android:layout_width="180dp"
android:layout_height="200dp"
android:layout_margin="5dp"
android:orientation="vertical">.......
</android.support.v7.widget.CardView>
</LinearLayout>

TextView with ImageSpans inside ListView is wrong layout

I have a ListView ,and the item is a TextView. It work well when I only use string.The TextView layout wrong when I add ImageSpan.
Follow is my code.
init a listview
private void initListView()
{
SpannableString spannableString1 = replaceEmotion(this, "[Android]", 0);
SpannableString spannableString2 = replaceEmotion(this, "123456123456123456", 0);
for (int i = 0; i < 140; i++)
{
int t = (int) (Math.random() * 2);
if (t % 2 == 0)
{
listData.add(spannableString1);
}
else
{
listData.add(spannableString2);
}
}
listItemAdapter = new ArrayAdapter<>(this, R.layout.item_list, listData);
}
replace a string to a ImageSpan.
public SpannableString replaceEmotion(Context context, String content, int length)
{
if (length < 0)
{
length = 0;
}
SpannableString result = new SpannableString(content);
if (context == null || content == null)
{
return null;
}
int start = length;
int end;
while ((start = content.indexOf("[", start)) != -1 && (end = content.indexOf("]", start)) != -1)
{
String img = content.substring(start, end + 1);
if ("[Android]".equals(img))
{
Drawable drawable = context.getResources().getDrawable(R.mipmap.ic_launcher);
if (drawable != null)
{
drawable.setBounds(0, 0, (int) context.getResources().getDimension(R.dimen.fab_margin) * 3,
(int) context.getResources().getDimension(R.dimen.fab_margin) * 3);
ImageSpan span = new ImageSpan(drawable);
result.setSpan(span, start, end + 1, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);
}
}
start++;
}
return result;
}
I have try to requestLayout,but it doesn't work.

<LinearLayout
android:id="#+id/cotainer"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/text1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:visibility="visible"/>
</LinearLayout>
i solve it by change above to below.
<LinearLayout
android:id="#+id/cotainer"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="visible"/>
</LinearLayout>
yes.only TextView android:layout_width="match_parent" to android:layout_width="wrap_content"

Base on the looks of the result, I guess framework does not update the height of the "recycled" TextView even if the content has changed. Actually it does not update the Layout object that is being used by the TextView. Can you please try to set the layout_width of the TextView's to be "wrap_content"? It will force TextView to recalculate (and recreate) the Layout object.

How to make sticky section headers (like iOS) in Android?

My specific question is: How I can achieve an effect like this: http://youtu.be/EJm7subFbQI
The bounce effect is not important, but i need the "sticky" effect for the headers. Where do I start?, In what can I base me? I need something that I can implement on API 8 to up.
Thanks.

There are a few solutions that already exist for this problem. What you're describing are section headers and have come to be referred to as sticky section headers in Android.
Sticky List Headers
Sticky Scroll Views
HeaderListView

EDIT: Had some free time to add the code of fully working example. Edited the answer accordingly.
For those who don't want to use 3rd party code (or cannot use it directly, e.g. in Xamarin), this could be done fairly easily by hand.
The idea is to use another ListView for the header. This list view contains only the header items. It will not be scrollable by the user (setEnabled(false)), but will be scrolled from code based on main lists' scrolling. So you will have two lists - headerListview and mainListview, and two corresponding adapters headerAdapter and mainAdapter. headerAdapter only returns section views, while mainAdapter supports two view types (section and item). You will need a method that takes a position in the main list and returns a corresponding position in the sections list.
Main activity
public class MainActivity extends AppCompatActivity {
public static final int TYPE_SECTION = 0;
public static final int TYPE_ITEM = 1;
ListView mainListView;
ListView headerListView;
MainAdapter mainAdapter;
HeaderAdapter headerAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mainListView = (ListView)findViewById(R.id.list);
headerListView = (ListView)findViewById(R.id.header);
mainAdapter = new MainAdapter();
headerAdapter = new HeaderAdapter();
headerListView.setEnabled(false);
headerListView.setAdapter(headerAdapter);
mainListView.setAdapter(mainAdapter);
mainListView.setOnScrollListener(new AbsListView.OnScrollListener(){
#Override
public void onScrollStateChanged(AbsListView view, int scrollState){
}
#Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
// this should return an index in the headers list, based one the index in the main list. The logic for this is highly dependent on your data.
int pos = mainAdapter.getSectionIndexForPosition(firstVisibleItem);
// this makes sure our headerListview shows the proper section (the one on the top of the mainListview)
headerListView.setSelection(pos);
// this makes sure that headerListview is scrolled exactly the same amount as the mainListview
if(mainAdapter.getItemViewType(firstVisibleItem + 1) == TYPE_SECTION){
headerListView.setSelectionFromTop(pos, mainListView.getChildAt(0).getTop());
}
}
});
}
public class MainAdapter extends BaseAdapter{
int count = 30;
#Override
public int getItemViewType(int position){
if((float)position / 10 == (int)((float)position/10)){
return TYPE_SECTION;
}else{
return TYPE_ITEM;
}
}
#Override
public int getViewTypeCount(){ return 2; }
#Override
public int getCount() { return count - 1; }
#Override
public Object getItem(int position) { return null; }
#Override
public long getItemId(int position) { return position; }
public int getSectionIndexForPosition(int position){ return position / 10; }
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = getLayoutInflater().inflate(R.layout.item, parent, false);
position++;
if(getItemViewType(position) == TYPE_SECTION){
((TextView)v.findViewById(R.id.text)).setText("SECTION "+position);
}else{
((TextView)v.findViewById(R.id.text)).setText("Item "+position);
}
return v;
}
}
public class HeaderAdapter extends BaseAdapter{
int count = 5;
#Override
public int getCount() { return count; }
#Override
public Object getItem(int position) { return null; }
#Override
public long getItemId(int position) { return position; }
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = getLayoutInflater().inflate(R.layout.item, parent, false);
((TextView)v.findViewById(R.id.text)).setText("SECTION "+position*10);
return v;
}
}
}
A couple of things to note here. We do not want to show the very first section in the main view list, because it would produce a duplicate (it's already shown in the header). To avoid that, in your mainAdapter.getCount():
return actualCount - 1;
and make sure the first line in your getView() method is
position++;
This way your main list will be rendering all cells but the first one.
Another thing is that you want to make sure your headerListview's height matches the height of the list item. In this example the height is fixed, but it could be tricky if your items height is not set to an exact value in dp. Please refer to this answer for how to address this: https://stackoverflow.com/a/41577017/291688
Main layout
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin">
<ListView
android:id="#+id/header"
android:layout_width="match_parent"
android:layout_height="48dp"/>
<ListView
android:id="#+id/list"
android:layout_below="#+id/header"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</RelativeLayout>
Item / header layout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="48dp">
<TextView
android:id="#+id/text"
android:gravity="center_vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</LinearLayout>

Add this in your app.gradle file
compile 'se.emilsjolander:StickyScrollViewItems:1.1.0'
then my layout, where I have added android:tag ="sticky" to specific views like textview or edittext not LinearLayout, looks like this. It also uses databinding, ignore that.
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android">
<data>
<variable
name="temp"
type="com.lendingkart.prakhar.lendingkartdemo.databindingmodel.BusinessDetailFragmentModel" />
<variable
name="presenter"
type="com.lendingkart.prakhar.lendingkartdemo.presenters.BusinessDetailsPresenter" />
</data>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<com.lendingkart.prakhar.lendingkartdemo.customview.StickyScrollView
android:id="#+id/sticky_scroll"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!-- scroll view child goes here -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v7.widget.CardView xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
card_view:cardCornerRadius="5dp"
card_view:cardUseCompatPadding="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
style="#style/group_view_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/businessdetailtitletextviewbackground"
android:padding="#dimen/activity_horizontal_margin"
android:tag="sticky"
android:text="#string/business_contact_detail" />
<android.support.design.widget.TextInputLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="7dp">
<android.support.design.widget.TextInputEditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/comapnyLabel"
android:textSize="16sp" />
</android.support.design.widget.TextInputLayout>
<android.support.design.widget.TextInputLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp">
<android.support.design.widget.TextInputEditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/contactLabel"
android:textSize="16sp" />
</android.support.design.widget.TextInputLayout>
<android.support.design.widget.TextInputLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp">
<android.support.design.widget.TextInputEditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/emailLabel"
android:textSize="16sp" />
</android.support.design.widget.TextInputLayout>
<android.support.design.widget.TextInputLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp">
<android.support.design.widget.TextInputEditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/NumberOfEmployee"
android:textSize="16sp" />
</android.support.design.widget.TextInputLayout>
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
card_view:cardCornerRadius="5dp"
card_view:cardUseCompatPadding="true">
<TextView
style="#style/group_view_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/businessdetailtitletextviewbackground"
android:padding="#dimen/activity_horizontal_margin"
android:tag="sticky"
android:text="#string/nature_of_business" />
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
card_view:cardCornerRadius="5dp"
card_view:cardUseCompatPadding="true">
<TextView
style="#style/group_view_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/businessdetailtitletextviewbackground"
android:padding="#dimen/activity_horizontal_margin"
android:tag="sticky"
android:text="#string/taxation" />
</android.support.v7.widget.CardView>
</LinearLayout>
</com.lendingkart.prakhar.lendingkartdemo.customview.StickyScrollView>
</LinearLayout>
</layout>
style group for the textview looks this
<style name="group_view_text" parent="#android:style/TextAppearance.Medium">
<item name="android:layout_width">wrap_content</item>
<item name="android:layout_height">wrap_content</item>
<item name="android:textColor">#color/edit_text_color</item>
<item name="android:textSize">16dp</item>
<item name="android:layout_centerVertical">true</item>
<item name="android:textStyle">bold</item>
</style>
and the background for the textview goes like this:(#drawable/businessdetailtitletextviewbackground)
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle">
<solid android:color="#color/edit_text_color" />
</shape>
</item>
<item android:bottom="2dp">
<shape android:shape="rectangle">
<solid android:color="#color/White" />
</shape>
</item>
</layer-list>

For those looking for a solution in 2020, I have quickly created a solution extending the Layout Manager from ruslansharipov project (Sticky Header) and combining it whith the RecycleView Adapter from lisawray Groupie project (Expandable RecycleView).
You can see my example here
Result Here

You can reach this effect using SuperSLiM library. It provides you a LayoutManager for RecyclerView with interchangeable linear, grid, and staggered displays of views.
A good demo is located in github repository
It is simply to get such result
app:slm_headerDisplay="inline|sticky"
or
app:slm_headerDisplay="sticky"

I have used one special class to achieve listview like iPhone.
You can find example with source code here. https://demonuts.com/android-recyclerview-sticky-header-like-iphone/
This class which has updated listview is as
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.View;
import android.view.animation.AlphaAnimation;
import android.widget.AbsListView;
import android.widget.AdapterView;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;
import android.widget.ListView;
import android.widget.RelativeLayout;
public class HeaderListView extends RelativeLayout {
// TODO: Handle listViews with fast scroll
// TODO: See if there are methods to dispatch to mListView
private static final int FADE_DELAY = 1000;
private static final int FADE_DURATION = 2000;
private InternalListView mListView;
private SectionAdapter mAdapter;
private RelativeLayout mHeader;
private View mHeaderConvertView;
private FrameLayout mScrollView;
private AbsListView.OnScrollListener mExternalOnScrollListener;
public HeaderListView(Context context) {
super(context);
init(context, null);
}
public HeaderListView(Context context, AttributeSet attrs) {
super(context, attrs);
init(context, attrs);
}
private void init(Context context, AttributeSet attrs) {
mListView = new InternalListView(getContext(), attrs);
LayoutParams listParams = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
listParams.addRule(ALIGN_PARENT_TOP);
mListView.setLayoutParams(listParams);
mListView.setOnScrollListener(new HeaderListViewOnScrollListener());
mListView.setVerticalScrollBarEnabled(false);
mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
if (mAdapter != null) {
mAdapter.onItemClick(parent, view, position, id);
}
}
});
addView(mListView);
mHeader = new RelativeLayout(getContext());
LayoutParams headerParams = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
headerParams.addRule(ALIGN_PARENT_TOP);
mHeader.setLayoutParams(headerParams);
mHeader.setGravity(Gravity.BOTTOM);
addView(mHeader);
// The list view's scroll bar can be hidden by the header, so we display our own scroll bar instead
Drawable scrollBarDrawable = getResources().getDrawable(R.drawable.scrollbar_handle_holo_light);
mScrollView = new FrameLayout(getContext());
LayoutParams scrollParams = new LayoutParams(scrollBarDrawable.getIntrinsicWidth(), LayoutParams.MATCH_PARENT);
scrollParams.addRule(ALIGN_PARENT_RIGHT);
scrollParams.rightMargin = (int) dpToPx(2);
mScrollView.setLayoutParams(scrollParams);
ImageView scrollIndicator = new ImageView(context);
scrollIndicator.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
scrollIndicator.setImageDrawable(scrollBarDrawable);
scrollIndicator.setScaleType(ScaleType.FIT_XY);
mScrollView.addView(scrollIndicator);
mScrollView.setVisibility(INVISIBLE);
addView(mScrollView);
}
public void setAdapter(SectionAdapter adapter) {
mAdapter = adapter;
mListView.setAdapter(adapter);
}
public void setOnScrollListener(AbsListView.OnScrollListener l) {
mExternalOnScrollListener = l;
}
private class HeaderListViewOnScrollListener implements AbsListView.OnScrollListener {
private int previousFirstVisibleItem = -1;
private int direction = 0;
private int actualSection = 0;
private boolean scrollingStart = false;
private boolean doneMeasuring = false;
private int lastResetSection = -1;
private int nextH;
private int prevH;
private View previous;
private View next;
private AlphaAnimation fadeOut = new AlphaAnimation(1f, 0f);
private boolean noHeaderUpToHeader = false;
private boolean didScroll = false;
#Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
if (mExternalOnScrollListener != null) {
mExternalOnScrollListener.onScrollStateChanged(view, scrollState);
}
didScroll = true;
}
#Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
if (mExternalOnScrollListener != null) {
mExternalOnScrollListener.onScroll(view, firstVisibleItem, visibleItemCount, totalItemCount);
}
if (!didScroll) {
return;
}
firstVisibleItem -= mListView.getHeaderViewsCount();
if (firstVisibleItem < 0) {
mHeader.removeAllViews();
return;
}
updateScrollBar();
if (visibleItemCount > 0 && firstVisibleItem == 0 && mHeader.getChildAt(0) == null) {
addSectionHeader(0);
lastResetSection = 0;
}
int realFirstVisibleItem = getRealFirstVisibleItem(firstVisibleItem, visibleItemCount);
if (totalItemCount > 0 && previousFirstVisibleItem != realFirstVisibleItem) {
direction = realFirstVisibleItem - previousFirstVisibleItem;
actualSection = mAdapter.getSection(realFirstVisibleItem);
boolean currIsHeader = mAdapter.isSectionHeader(realFirstVisibleItem);
boolean prevHasHeader = mAdapter.hasSectionHeaderView(actualSection - 1);
boolean nextHasHeader = mAdapter.hasSectionHeaderView(actualSection + 1);
boolean currHasHeader = mAdapter.hasSectionHeaderView(actualSection);
boolean currIsLast = mAdapter.getRowInSection(realFirstVisibleItem) == mAdapter.numberOfRows(actualSection) - 1;
boolean prevHasRows = mAdapter.numberOfRows(actualSection - 1) > 0;
boolean currIsFirst = mAdapter.getRowInSection(realFirstVisibleItem) == 0;
boolean needScrolling = currIsFirst && !currHasHeader && prevHasHeader && realFirstVisibleItem != firstVisibleItem;
boolean needNoHeaderUpToHeader = currIsLast && currHasHeader && !nextHasHeader && realFirstVisibleItem == firstVisibleItem && Math.abs(mListView.getChildAt(0).getTop()) >= mListView.getChildAt(0).getHeight() / 2;
noHeaderUpToHeader = false;
if (currIsHeader && !prevHasHeader && firstVisibleItem >= 0) {
resetHeader(direction < 0 ? actualSection - 1 : actualSection);
} else if ((currIsHeader && firstVisibleItem > 0) || needScrolling) {
if (!prevHasRows) {
resetHeader(actualSection-1);
}
startScrolling();
} else if (needNoHeaderUpToHeader) {
noHeaderUpToHeader = true;
} else if (lastResetSection != actualSection) {
resetHeader(actualSection);
}
previousFirstVisibleItem = realFirstVisibleItem;
}
if (scrollingStart) {
int scrolled = realFirstVisibleItem >= firstVisibleItem ? mListView.getChildAt(realFirstVisibleItem - firstVisibleItem).getTop() : 0;
if (!doneMeasuring) {
setMeasurements(realFirstVisibleItem, firstVisibleItem);
}
int headerH = doneMeasuring ? (prevH - nextH) * direction * Math.abs(scrolled) / (direction < 0 ? nextH : prevH) + (direction > 0 ? nextH : prevH) : 0;
mHeader.scrollTo(0, -Math.min(0, scrolled - headerH));
if (doneMeasuring && headerH != mHeader.getLayoutParams().height) {
LayoutParams p = (LayoutParams) (direction < 0 ? next.getLayoutParams() : previous.getLayoutParams());
p.topMargin = headerH - p.height;
mHeader.getLayoutParams().height = headerH;
mHeader.requestLayout();
}
}
if (noHeaderUpToHeader) {
if (lastResetSection != actualSection) {
addSectionHeader(actualSection);
lastResetSection = actualSection + 1;
}
mHeader.scrollTo(0, mHeader.getLayoutParams().height - (mListView.getChildAt(0).getHeight() + mListView.getChildAt(0).getTop()));
}
}
private void startScrolling() {
scrollingStart = true;
doneMeasuring = false;
lastResetSection = -1;
}
private void resetHeader(int section) {
scrollingStart = false;
addSectionHeader(section);
mHeader.requestLayout();
lastResetSection = section;
}
private void setMeasurements(int realFirstVisibleItem, int firstVisibleItem) {
if (direction > 0) {
nextH = realFirstVisibleItem >= firstVisibleItem ? mListView.getChildAt(realFirstVisibleItem - firstVisibleItem).getMeasuredHeight() : 0;
}
previous = mHeader.getChildAt(0);
prevH = previous != null ? previous.getMeasuredHeight() : mHeader.getHeight();
if (direction < 0) {
if (lastResetSection != actualSection - 1) {
addSectionHeader(Math.max(0, actualSection - 1));
next = mHeader.getChildAt(0);
}
nextH = mHeader.getChildCount() > 0 ? mHeader.getChildAt(0).getMeasuredHeight() : 0;
mHeader.scrollTo(0, prevH);
}
doneMeasuring = previous != null && prevH > 0 && nextH > 0;
}
private void updateScrollBar() {
if (mHeader != null && mListView != null && mScrollView != null) {
int offset = mListView.computeVerticalScrollOffset();
int range = mListView.computeVerticalScrollRange();
int extent = mListView.computeVerticalScrollExtent();
mScrollView.setVisibility(extent >= range ? View.INVISIBLE : View.VISIBLE);
if (extent >= range) {
return;
}
int top = range == 0 ? mListView.getHeight() : mListView.getHeight() * offset / range;
int bottom = range == 0 ? 0 : mListView.getHeight() - mListView.getHeight() * (offset + extent) / range;
mScrollView.setPadding(0, top, 0, bottom);
fadeOut.reset();
fadeOut.setFillBefore(true);
fadeOut.setFillAfter(true);
fadeOut.setStartOffset(FADE_DELAY);
fadeOut.setDuration(FADE_DURATION);
mScrollView.clearAnimation();
mScrollView.startAnimation(fadeOut);
}
}
private void addSectionHeader(int actualSection) {
View previousHeader = mHeader.getChildAt(0);
if (previousHeader != null) {
mHeader.removeViewAt(0);
}
if (mAdapter.hasSectionHeaderView(actualSection)) {
mHeaderConvertView = mAdapter.getSectionHeaderView(actualSection, mHeaderConvertView, mHeader);
mHeaderConvertView.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
mHeaderConvertView.measure(MeasureSpec.makeMeasureSpec(mHeader.getWidth(), MeasureSpec.EXACTLY), MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
mHeader.getLayoutParams().height = mHeaderConvertView.getMeasuredHeight();
mHeaderConvertView.scrollTo(0, 0);
mHeader.scrollTo(0, 0);
mHeader.addView(mHeaderConvertView, 0);
} else {
mHeader.getLayoutParams().height = 0;
mHeader.scrollTo(0, 0);
}
mScrollView.bringToFront();
}
private int getRealFirstVisibleItem(int firstVisibleItem, int visibleItemCount) {
if (visibleItemCount == 0) {
return -1;
}
int relativeIndex = 0, totalHeight = mListView.getChildAt(0).getTop();
for (relativeIndex = 0; relativeIndex < visibleItemCount && totalHeight < mHeader.getHeight(); relativeIndex++) {
totalHeight += mListView.getChildAt(relativeIndex).getHeight();
}
int realFVI = Math.max(firstVisibleItem, firstVisibleItem + relativeIndex - 1);
return realFVI;
}
}
public ListView getListView() {
return mListView;
}
public void addHeaderView(View v) {
mListView.addHeaderView(v);
}
private float dpToPx(float dp) {
return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, getContext().getResources().getDisplayMetrics());
}
protected class InternalListView extends ListView {
public InternalListView(Context context, AttributeSet attrs) {
super(context, attrs);
}
#Override
protected int computeVerticalScrollExtent() {
return super.computeVerticalScrollExtent();
}
#Override
protected int computeVerticalScrollOffset() {
return super.computeVerticalScrollOffset();
}
#Override
protected int computeVerticalScrollRange() {
return super.computeVerticalScrollRange();
}
}
}
XML usage
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<com.example.parsaniahardik.listview_stickyheader_ios.HeaderListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/lv">
</com.example.parsaniahardik.listview_stickyheader_ios.HeaderListView>

Develop Reference

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