I would like to implement a screen where I have a Card view containing a RecyclerView.
The CardView should of the same height of the content of the recycler view, this means that if the RecyclerView has few item, I should see the bottom corners and the bottom shadow of the card but if the RecyclerView has many items, the Card view should "scroll" with the RecyclerView to have the bottom corners and shadow of the cardview at the bottom of the RecylerView.
Here what it should look like when the RecyclerView is at top :
When the user begins to scroll, the top corners disappear with the RecyclerView scrolling :
And finally, when the user reaches the bottom of the RecyclerView, the bottom corners and the shadow of the CardView appears :
From now, I managed to have a working implementation by putting the RecyclerView inside the CardView and the CardView inside a NestedScrollView but this breaks the fling gesture...
<android.support.design.widget.CoordinatorLayout
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:clipChildren="false"
android:id="#+id/containerLayout"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:orientation="vertical"
tools:ignore="MissingPrefix">
<android.support.v4.widget.NestedScrollView
android:clipToPadding="false"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:paddingBottom="16dp"
android:paddingLeft="85dp"
android:paddingRight="85dp"
android:paddingTop="16dp">
<android.support.v7.widget.CardView
android:layout_height="wrap_content"
android:layout_width="match_parent"
app:cardBackgroundColor="?android:attr/windowBackground">
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_height="wrap_content"
android:layout_width="match_parent"/>
</android.support.v7.widget.CardView>
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>
Do you have any hints or idea on how I could implement such design ? I guess that CoordinatorLayout could help me but I couldn't find anything ...
Thank you
Picking up Oknesif's idea of a manipulated adapter, I made an adapter with three layouts (topitem, middleitem, bottomitem) with two XML drawable shapes for topitem and bottomitem. Thus, I was able to completely get rid of the NestedScrollView and the CardView.
This is what it looks like:
And here is the code. First, MainActivity:
public class MainActivity extends AppCompatActivity {
final static int LIST_SIZE = 100;
final static int TOP = 0;
final static int BOTTOM = LIST_SIZE;
final static int MIDDLE = 1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity);
final ArrayList<Integer> list = new ArrayList<>();
for (int i = 0; i < LIST_SIZE; i++) {
list.add(i);
}
class Viewholder extends RecyclerView.ViewHolder {
TextView textView;
Viewholder(View itemView) {
super(itemView);
textView = itemView.findViewById(R.id.textView);
}
}
RecyclerView recyclerView = findViewById(R.id.recyclerView);
final RecyclerView.Adapter<Viewholder> adapter = new RecyclerView.Adapter<Viewholder>() {
LayoutInflater inflater = LayoutInflater.from(MainActivity.this);
#Override
public Viewholder onCreateViewHolder(ViewGroup parent, int viewType) {
switch (viewType) {
case TOP:
return new Viewholder(inflater.inflate(R.layout.topitem, parent, false));
case BOTTOM:
return new Viewholder(inflater.inflate(R.layout.bottomitem, parent, false));
case MIDDLE:
default:
return new Viewholder(inflater.inflate(R.layout.middleitem, parent, false));
}
}
#Override
public void onBindViewHolder(Viewholder holder, int position) {
holder.textView.setText(String.valueOf(list.get(position)));
if (position != 0 && position != LIST_SIZE - 1) {
int color = position % 2 == 0 ? android.R.color.holo_orange_dark : android.R.color.holo_orange_light;
holder.itemView.setBackgroundColor(getResources().getColor(color));
}
}
#Override
public int getItemCount() {
return LIST_SIZE;
}
#Override
public int getItemViewType(int position) {
int itemViewType;
switch (position) {
case 0:
itemViewType = TOP;
break;
case LIST_SIZE - 1:
itemViewType = BOTTOM;
break;
default:
itemViewType = MIDDLE;
}
return itemViewType;
}
};
recyclerView.setAdapter(adapter);
recyclerView.setLayoutManager(new LinearLayoutManager(MainActivity.this));
}
}
res/layout/activity.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/containerLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clipToPadding="false"
android:paddingLeft="25dp"
android:paddingRight="25dp" />
</android.support.design.widget.CoordinatorLayout>
res/layout/topitem.xml:
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/topbackground"
android:layout_marginTop="50dp"
android:textAlignment="center"
android:textColor="#android:color/white"
android:textSize="24sp"
android:textStyle="bold" />
res/layout/middleitem.xml:
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAlignment="center"
android:textColor="#android:color/white"
android:textSize="24sp"
android:textStyle="bold" />
res/layout/bottomitem.xml:
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/bottombackground"
android:layout_marginBottom="50dp"
android:textAlignment="center"
android:textColor="#android:color/white"
android:textSize="24sp"
android:textStyle="bold" />
res/drawable/topbackground.xml:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners
android:topLeftRadius="5dp"
android:topRightRadius="5dp" />
<solid android:color="#android:color/holo_orange_dark" />
</shape>
res/drawable/bottombackground.xml:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<corners
android:bottomLeftRadius="5dp"
android:bottomRightRadius="5dp" />
<solid android:color="#android:color/holo_orange_light" />
</shape>
EDIT:
Adding this line to the bottom XML item layouts:
android:elevation="12dp"
and changing the background to white, gives the following result:
it's just a simple line of code
recycler.setNestedScrollingEnabled(false);
and don't forget to make cardview height to wrap_content
I have a suggestion based on the Constraintlayout which I have used before.
You can create two Guideline to set the starting and ending position of the CardView during the scrolling process. Let me illustrate the XML for the start position of the view
<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:clipChildren="false"
android:id="#+id/containerLayout"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:orientation="vertical"
tools:ignore="MissingPrefix">
<android.support.constraint.Guideline
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/guideline"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.1"/>
<android.support.constraint.Guideline
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/guideline2"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.9"/>
<android.support.v7.widget.CardView
android:layout_height="wrap_content"
android:layout_width="match_parent"
app:cardBackgroundColor="?android:attr/windowBackground"
app:layout_constraintTop_toTopOf="#+id/guideline">
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_height="wrap_content"
android:layout_width="match_parent" />
</android.support.v7.widget.CardView>
here I am assuming that you want to leave roughly 10% of screen space empty on top. If you want less or more, please adjust.
Once the user starts scrolling you can adjust the top constraint of the Cardview to the top of the parent and once he reaches the bottom of the list you can adjust the bottom constraint of the Cardview to the guideline2 which will leave 10% of screen space below.
This should achieve the desired effect without much performance issues since you are doing away with the Scrollview.
Please let me know if you need me to elaborate any part of my answer in more detail.
Related
Hi all I am very new to android and I am having a problem with recyclerview. I am trying to add space between image views in a recyclerview but I am not successful.
What I want
What is happening
Below are my implementations
ItemOffsetDecoration.java
public class ItemOffsetDecoration extends RecyclerView.ItemDecoration {
private int itemOffset;
public ItemOffsetDecoration(int itemOffset) {
itemOffset = itemOffset;
}
public ItemOffsetDecoration(#NonNull Context context, #DimenRes int itemOffsetId) {
this(context.getResources().getDimensionPixelSize(itemOffsetId));
}
#Override
public void getItemOffsets(Rect outRect, View view, RecyclerView parent,
RecyclerView.State state) {
super.getItemOffsets(outRect, view, parent, state);
outRect.set(itemOffset, itemOffset, itemOffset, itemOffset);
}
}
shopping.xml
<?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:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/shopping_bg"
tools:context=".activities.HomepageActivity$PlaceholderFragment">
<android.support.v7.widget.RecyclerView
android:id="#+id/shoppingRV"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="false"
android:padding="#dimen/grid_horizontal_spacing"/>
</RelativeLayout>
Shopping.java
public class Shopping extends Fragment implements InstaPukkeiRecyclerViewAdapter.ItemClickListener {
InstaPukkeiRecyclerViewAdapter adapter;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.tab_shopping, container, false);
processRV(rootView);
return rootView;
}
private void processRV(View layout) {
RecyclerView recyclerView = (RecyclerView) layout.findViewById(R.id.shoppingRV);
int noOfColumns = 3;
recyclerView.setLayoutManager(new GridLayoutManager(getContext(), noOfColumns));
adapter = new InstaPukkeiRecyclerViewAdapter(getContext(), LogoIds.SHOPPING_SITE_LOGOS);
adapter.setClickListener(this);
recyclerView.setAdapter(adapter);
recyclerView.addItemDecoration(new ItemOffsetDecoration(getContext(), R.dimen.grid_horizontal_spacing));
}
}
Please help me here. Thanks in advance.
EDIT
item_layout.xml
<?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="match_parent">
<ImageView
android:id="#+id/logoImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:scaleType="fitXY"
android:adjustViewBounds="true" />
</LinearLayout>
<?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="wrap_content">
<ImageView
android:marginLeft="18dp"
android:marginRight="18dp"
android:id="#+id/logoImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:scaleType="fitXY"
android:adjustViewBounds="true" />
</LinearLayout>
Change your item layout with this one in your item's XML. You make the parent(LinearLayout) height match parent that's why you are getting vertical full screen space
Use wrap_content in RecyclerView and also in row layout.And also add margins
<android.support.v7.widget.RecyclerView
android:id="#+id/shoppingRV"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clipToPadding="false"
android:padding="#dimen/grid_horizontal_spacing"/>
hmmm you can add margin to your image view or use dimen to set height and width something like this
android:layout_width="#dimen/dp_130"
android:layout_height="#dimen/dp_120"
or
<ImageView
android:id="#+id/logoImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:scaleType="fitXY"
android:layout_margin="#dimen/dp_15"
android:adjustViewBounds="true" />
Inside your Recycleview set layout height to wrap_content
I am trying to have a full screen grid with a RecyclerView with a GridLayoutManager but for some reason a horizontal space is added between the rows and at the top and bottom of my RecyclerView. I can't get rid of it. I searched for solutions and tried an ItemDecorator by setting the dimensions to 0 explicitly but that didn't work. Nothing else worked.
The image.
The code for my ItemDecorator is pretty standard, included.
private class RecyclerViewItemDecorator extends RecyclerView.ItemDecoration {
private int spaceInPixels;
public RecyclerViewItemDecorator(int spaceInPixels) {
this.spaceInPixels = spaceInPixels;
}
#Override
public void getItemOffsets(Rect outRect, View view,
RecyclerView parent, RecyclerView.State state) {
outRect.left = spaceInPixels;
outRect.right = spaceInPixels;
outRect.bottom = spaceInPixels;
if (parent.getChildLayoutPosition(view) == 0) {
outRect.top = spaceInPixels;
} else {
outRect.top = 0;
}
}
}
These are the layout files I use.
/layout/activity_main.xml
<?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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.korah.moviesapp.MainActivity">
<fragment
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/main_fragment"
android:name="com.example.korah.moviesapp.MainActivityFragment"
tools:layout="#layout/activity_main_fragment"
>
</fragment>
</RelativeLayout>
/layout/activity_main_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.RecyclerView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/movies_recycler"
xmlns:android="http://schemas.android.com/apk/res/android">
</android.support.v7.widget.RecyclerView>
/layout/activity_movies_grid.xml
<?xml version="1.0" encoding="utf-8"?>
<ImageView
android:id="#+id/imageView"
android:src="#drawable/interst"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
xmlns:android="http://schemas.android.com/apk/res/android" />
Should be because of the scaling of Image rather than anything else. So try setting scaleType of ImageView as fitXY.
<ImageView
android:id="#+id/imageView"
android:src="#drawable/interst"
android:layout_width="wrap_content"
android:scaleType="fitXY"
android:layout_height="wrap_content"
xmlns:android="http://schemas.android.com/apk/res/android" />
I have a problem which is driving me nuts. Basically it is a simple RecyclerView which displays a cardview. There are a lot of posts out there already, which I checked. I have assigned a LayoutManager as indicated here (RecyclerView Not Displaying Any CardView Items) , I have implemented the getItemCount method as explained here (card view not showing up), and I changed to the following versions (changing version was suggested here RecyclerView of cards not showing anything):
compile 'com.android.support:support-v4:24.0.0'
compile 'com.android.support:cardview-v7:24.0.0'
compile 'com.android.support:recyclerview-v7:24.0.0'
I also did the notifyDataSetChanged() as indicated here (RecyclerView Not Displaying Any CardView Items). However, nothing fixed it for me.
I have an Activity which has the following code (only relevant sections, getDummyData returns a List with 1 dummy data):
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
DatabaseHelper databaseHelper = new DatabaseHelper(getApplicationContext());
setContentView(R.layout.activity_overview);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
RecyclerView rv = (RecyclerView) findViewById(R.id.rv);
rv.setHasFixedSize(true);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
rv.setLayoutManager(linearLayoutManager);
RVAdapter adapter = new RVAdapter(getDummyData());
rv.setAdapter(adapter);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
adapter.notifyDataSetChanged();
}
public class RVAdapter extends RecyclerView.Adapter<RVAdapter.DocumentViewHolder> {
List<Document> DocumentList;
public RVAdapter(List<Document> Documents) {
this.DocumentList = Documents;
}
#Override
public DocumentViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.document_item, parent, false);
DocumentViewHolder pvh = new DocumentViewHolder(v);
return pvh;
}
#Override
public void onBindViewHolder(DocumentViewHolder DocumentViewHolder, int i) {
DocumentViewHolder.Date.setText(DocumentList.get(i).getCreatedFormatted());
DocumentViewHolder.participants.setText(DocumentList.get(i).getParticipants(getApplicationContext()));
DocumentViewHolder.counterOfItems.setText(DocumentList.get(i).getcounterOfItems(getApplicationContext()) + StringUtils.EMPTY);
}
#Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
}
#Override
public int getItemCount() {
//return DocumentList.size();
return 1;
}
public class DocumentViewHolder extends RecyclerView.ViewHolder {
TextView Date;
TextView participants;
TextView ideasPreview;
TextView counterOfItems;
ImageView Photo;
public DocumentViewHolder(View itemView) {
super(itemView);
Date = (TextView) itemView.findViewById(R.id._date);
participants = (TextView) itemView.findViewById(R.id.participants);
ideasPreview = (TextView) itemView.findViewById(R.id.ideas_preview);
counterOfItems = (TextView) itemView.findViewById(R.id.counter_of_items);
Photo = (ImageView) itemView.findViewById(R.id._photo);
}
}
}
And I have a Document_item - xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
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:id="#+id/card_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
card_view:cardCornerRadius="#dimen/_card_corner">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:id="#+id/_photo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.25" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal"
android:orientation="vertical"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingEnd="#dimen/activity_horizontal_margin"
android:paddingStart="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin">
<TextView
android:id="#+id/_date"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="21st June 2016" />
<TextView
android:id="#+id/participants"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Thomas, Christian and Johann" />
<TextView
android:id="#+id/counter_of_items"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Thomas, Christian and Johann" />
<TextView
android:id="#+id/ideas_preview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Hello, Test, Test, Test" />
</LinearLayout>
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
The activity's xml looks like this:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
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"
android:fitsSystemWindows="true"
tools:context="com.chmaurer.idea.OverviewActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/rv"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v7.widget.RecyclerView>
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin"
android:src="#drawable/ic_playlist_add_white_24dp" />
</android.support.design.widget.CoordinatorLayout>
The code is compiling and executing normally, but no cards are shown. I have tried a few hour for myself now, but it is definitely the point where I'd be glad to have a hint...
Your code is fine, The problem is with layout file: document_item.xml:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:id="#+id/_photo"
android:layout_width="wrap_content" -->mistake
android:layout_height="wrap_content"
android:layout_weight="0.25" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent" -->mistake
android:gravity="center_horizontal"
android:orientation="vertical"
...
The second LinearLayout gets its height from parent (first LinearLayout), and the first one gets its height from its only child: ImageView (so without no drawable set, the second layout's height will be zero! ), if you set a drawable for ImageView (in onBindViewHolder method or in layout xml file) it probably crops some of TextView items, Also when you set android:layout_width to "wrap_content", actually you're ignoring layout_weight.
So edit layout file like this:
...
<ImageView
android:id="#+id/_photo"
android:layout_width="0dp"
android:layout_gravity="center_vertical"
android:layout_height="wrap_content"
android:layout_weight="0.25" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
...
You are using RecyclerView with vertical orientation (in Java code)
In the Activity XML you are setting the layout height to Wrap_Content
The card layout also has an height of match_parent
They will not work like that, I lost three days on this
Try to give fix height to your card layout, test also other alteration of other layout, it will work for you
Good luck
Just try after adding this line inside your recyclerview:
app:layout_behavior="#string/appbar_scrolling_view_behavior"
like this:
<android.support.v7.widget.RecyclerView
android:id="#+id/rv"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
</android.support.v7.widget.RecyclerView>
Hope it will help you.
I have RecyclerView inside ScrollView which is inside SwipeRefresh layout. I have few layouts on top of RecyclerView, but my RecyclerView is not visible, even if i remove other layouts from ScrollView. What do you suggest? I need to put list below some layouts in ScrollView somehow.
<?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="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto">
<include layout="#layout/toolbar"></include>
<android.support.v4.widget.SwipeRefreshLayout
android:id="#+id/swipe_refresh_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
....
<android.support.v7.widget.RecyclerView
android:id="#+id/simpleList"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</ScrollView>
</android.support.v4.widget.SwipeRefreshLayout>
</LinearLayout>
Tried to give specific height but still not visible o.O
If i replace RecyclerView with ListView, then list is visible.
If you want to have all the items of the list always visible then replace RecyclerView with LinearLayout and add your items to it.
An example:
your_layout.xml
<?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="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto">
<include layout="#layout/toolbar"></include>
<android.support.v4.widget.SwipeRefreshLayout
android:id="#+id/swipe_refresh_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
....
<LinearLayout
android:id="#+id/simpleList"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"/>
</ScrollView>
</android.support.v4.widget.SwipeRefreshLayout>
</LinearLayout>
list_item.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/item_text"/>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/abc_ic_ab_back_mtrl_am_alpha"/>
</LinearLayout>
And in your Java code:
first declare the list
mSimpleList = (LinearLayout) findViewById(R.id.simpleList);
then method for adding the items
public void addListItems(ArrayList<String> strings) {
LayoutInflater inflater = LayoutInflater.from(this);
for(String s : strings) {
View item = inflater.inflate(R.layout.item_layout, mSimpleList, false);
TextView text = (TextView) item.findViewById(R.id.item_text);
text.setText(s);
mSimpleList.addView(item);//you can add layout params if you want
}
}
I just had to put android:fillViewport="true" to SwipeRefreshLayout. And now RecyclerView is visible.
My earlier answer is blocking the down scroll. So, a good work around will be add your Stuff as the first element of the RecyclerView. That can be easily implemented using the adapter. That way you can still scroll your stuff as well as your actual list elements.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<include layout="#layout/toolbar"></include>
<android.support.v4.widget.SwipeRefreshLayout
android:id="#+id/swipe_refresh_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="#+id/simpleList"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_below="#+id/your_stuff" />
</android.support.v4.widget.SwipeRefreshLayout>
</LinearLayout>
And using something like the following for your adapter implimentation,
public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
class YourStuffViewHolder extends RecyclerView.ViewHolder {
//
}
class ViewHolderListItem extends RecyclerView.ViewHolder {
//
}
#Override
public int getItemViewType(int position) {
if(position>0){
return 1;
}
return 0;
}
#Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
switch (viewType) {
case 0: return new YourStuffViewHolder();
case 1: return new ViewHolderListItem ();
}
}
}
Please help me with the following situation.
I am developing an application where in one page I have a Linearlayout with a background image and RecyclerView with list of names.What I need is when i scroll up the RecyclerView I need the LinearLayout above also to move up so that the list in the recyclerView does not go under the LinearLayout above and when I scroll down the RecyclerView I need the LinearLayout above to scroll down so that we could see the image fully.
What i have done already is I used the setOnScrollListener of recyclerview and in the onScrolled() function I am getting the scrolling down and scrolling up event.But now i am stuck how to proceed further.
Below is the layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<include layout="#layout/toolbar"
android:id="#+id/toolbar" />
<android.support.v7.widget.CardView
android:id="#+id/cardview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/toolbar"
android:layout_margin="8dp"
card_view:cardBackgroundColor="#android:color/white"
card_view:cardCornerRadius="8dp">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/scrollview"
android:fillViewport="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="5"
android:orientation="vertical">
<LinearLayout
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="0dp"
android:orientation="vertical"
android:background="#drawable/hydeparkmap"
android:layout_weight="3" ></LinearLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="2"
android:scrollbars="vertical" />
</LinearLayout>
</ScrollView>
</android.support.v7.widget.CardView>
</RelativeLayout>
Here is the code, i used in corresponding java class:
#InjectView(R.id.scrollview)
ScrollView scrollview;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_shoplist);
ButterKnife.inject(this);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setTitle("ShopList");
scrollview.setVerticalScrollBarEnabled(true);
lm=new LinearLayoutManager(ShopListActivity.this);
recyclerView.setLayoutManager(lm);
firstVisibleInListview = lm.findFirstVisibleItemPosition();
adapter = new RecyclerViewAdapter(ShopListActivity.this, getData());
recyclerView.setAdapter(adapter);
recyclerView.addOnItemTouchListener(
new RecyclerItemClickListener(ShopListActivity.this, new RecyclerItemClickListener.OnItemClickListener() {
#Override
public void onItemClick(View view, int position) {
Intent intent1 = new Intent(ShopListActivity.this, ShopProductListActivity.class);
intent1.putExtra("position", String.valueOf(position));
intent1.putExtra("shopname", it.get(position).getTitle());
intent1.putExtra("shopimage", String.valueOf(it.get(position).getImgIcon()));
intent1.putExtra("subcategory", subcategory);
startActivity(intent1);
}
})
);
recyclerView.setOnScrollListener(new RecyclerView.OnScrollListener() {
#Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
int currentFirstVisible = lm.findFirstVisibleItemPosition();
if(currentFirstVisible > firstVisibleInListview){
Toast.makeText(getBaseContext(),"Scrolled up ",Toast.LENGTH_SHORT).show();
scrollview.fullScroll(ScrollView.FOCUS_UP);
}
else
Toast.makeText(getBaseContext(),"Scrolled down ",Toast.LENGTH_SHORT).show();
firstVisibleInListview = currentFirstVisible;
}
});
}
so if I understand your question completely, you some View that should scroll with
RcyclerView.
if so in this situation you should delete your ScrollView cause RecyclerView have that within itself. what I write here is step by step guide to put a header( not sticky) in top of your RecyclerView so they would scroll together:
1- first you need to create a layout containing your header in my case i had an image for header so it looked like this:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#mipmap/winter"/>
</LinearLayout>
let's call this header_layout
2- you need to implement another method of RecyclerAdapter called getItemViewType it's output would be in as second parameter onCreateViewHolder(ViewGroup parent,int viewType) here you inflate the layout for each kind of view you need( for me these two look like this) :
#Override
public int getItemViewType(int position){
if(position == 0){
return 0;
} else {
return 1;
}
}
#Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView;
if(viewType==1){
itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.report_row_layout, parent, false);
} else {
itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.report_header_layout, parent, false);
}
return new MyViewHolder(itemView);
}
note that my first position (header) differs and other are the same you could have multiple views for multiple positions.
3- you should change your onBindViewHolder if needed in my case I needed to make it do nothing for my first position
4- remove your ScrollView and implement the layouts in positions and your main layout should look like this:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<include layout="#layout/toolbar"
android:id="#+id/toolbar" />
<android.support.v7.widget.CardView
android:id="#+id/cardview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/toolbar"
android:layout_margin="8dp"
card_view:cardBackgroundColor="#android:color/white"
card_view:cardCornerRadius="8dp">
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</android.support.v7.widget.CardView>
</RelativeLayout>
I don't know what your CardView is doing but delete it if you think it's not needed. if you need you can make your header a LinearLayout or anything else.
hope this helps.