I am getting really frustrated with this. I don't understand why my CardView grid items are not displayed in my RecyclerView
Here is CardView grid item fragment_album_cardview_item.xml
<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_width="match_parent"
android:layout_height="match_parent"
card_view:cardUseCompatPadding="true"
card_view:cardCornerRadius="8dp"
android:layout_marginBottom="16dp"
card_view:cardBackgroundColor="#android:color/white">
</android.support.v7.widget.CardView>
Here I set the adapter
public void setGridViewAdapter(){
GridLayoutManager layoutManager = new GridLayoutManager(getActivity(), 2);
mRecyclerView.setHasFixedSize(true);
mRecyclerView.setLayoutManager(layoutManager);
mRecyclerViewAdapter = new RecyclerViewAdapter(App.mApp.mAlbums);
mRecyclerView.setAdapter(mRecyclerViewAdapter);
}
And here is my adapter
public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.Holder> {
private List<Album> itemList;
//private Context context;
// TODO adapter may be initialized by the time some of the albums have been added to the list
public RecyclerViewAdapter(List<Album> itemList) {
this.itemList = itemList;
Timber.d("itemList.size = "+String.valueOf(itemList.size()));
Timber.d("itemList.get(0).name = "+itemList.get(0).name);
//this.context = context;
}
#Override
public Holder onCreateViewHolder(ViewGroup parent, int viewType) {
Timber.d("onCreateViewHolder");
View cardView = LayoutInflater.from(parent.getContext()).inflate(R.layout.fragment_album_cardview_item, null);
Timber.d("cardView = "+String.valueOf(cardView));
Holder rcv = new Holder(cardView);
return rcv;
}
#Override
public void onBindViewHolder(Holder holder, int position) {
//holder.countryName.setText(itemList.get(position).getName());
//holder.countryPhoto.setImageResource(itemList.get(position).getPhoto());
}
#Override
public int getItemCount() {
return this.itemList.size();
}
// HOLDER
public class Holder extends RecyclerView.ViewHolder implements View.OnClickListener{
public TextView countryName;
public ImageView countryPhoto;
public Holder(View itemView) {
super(itemView);
//itemView.setOnClickListener(this);
//countryName = (TextView)itemView.findViewById(R.id.country_name);
//countryPhoto = (ImageView)itemView.findViewById(R.id.country_photo);
}
#Override
public void onClick(View view) {
Toast.makeText(view.getContext(), "Clicked Country Position = " + getPosition(), Toast.LENGTH_SHORT).show();
}
}
}
Apparently, just adding a some kind of widget for example a TextView to my CardView results in some grid items being shown
<android.support.v7.widget.CardView
android:id="#+id/card_view"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="10dp"
android:layout_height="100dp"
card_view:cardUseCompatPadding="true"
card_view:cardCornerRadius="8dp"
android:layout_marginBottom="16dp"
card_view:cardBackgroundColor="#android:color/white">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Bleh"/>
</android.support.v7.widget.CardView>
Related
I have 2 CardViews and a RecyclerView but i am
unable to align them vertically
unable to slide them independently (both slide if I slide any one in a bugged workaround)
I tried a few workarounds as well as different tutorials like edmt Dev and CodingWithMitch as well as searched for similar problems on stackoverflow but the problem seems to persist. So how do I align both of the cardviews vertically while still being able to slide each of them independently and horizontally.
(Code works fine for single card view)
Main Activity:
public class MainActivity extends AppCompatActivity {
List<Articles> articlesData;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
articlesData = new ArrayList<>();
//Repeats
articlesData.add(new Articles("10 Necessary Gadgets","Gadgets","Gadgets You Must Carry",R.drawable.bagchaincustom));
articlesData.add(new Articles("10 Benefits of Pre-Planning the Day","Self Improvement","Benefits of Planning in Advance",R.drawable.planner1custom));
LinearLayoutManager layoutManager = new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL,false);
RecyclerView recyclerView = findViewById(R.id.recyclerview);
recyclerView.setLayoutManager(layoutManager);
RecyclerViewAdapter adapter = new RecyclerViewAdapter(this, articlesData);
recyclerView.setAdapter(adapter);
}
Here is activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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">
<androidx.recyclerview.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/recyclerview"
android:orientation="horizontal">
</androidx.recyclerview.widget.RecyclerView>
</androidx.constraintlayout.widget.ConstraintLayout>
Here is the RecyclerViewAdapter Class:
public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private static final int LAYOUT_ONE= 0;
private static final int LAYOUT_TWO= 1;
#Override
public int getItemViewType(int position)
{
if(position == LAYOUT_ONE){
return LAYOUT_TWO;
}
else {
return LAYOUT_ONE;
}
}
private static final String Tag = "RecyclerViewAdapter";
private Context mContext;
private List<Articles> mData;
public RecyclerViewAdapter(Context mContext, List<Articles> mData) {
this.mContext = mContext;
this.mData = mData;
}
#NonNull
#Override
public RecyclerView.ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
LayoutInflater mInflater = LayoutInflater.from(mContext);
View view;
switch (viewType) {
case 0:
ViewHolder1 viewHolder1;
view = mInflater.inflate(R.layout.layout_listitem, parent, false);
return new ViewHolder1(view);
case 1:
ViewHolder2 viewHolder2;
view = mInflater.inflate(R.layout.layout_listitem2, parent, false);
return new ViewHolder2(view);
default:
return null;
}
}
#Override
public void onBindViewHolder(#NonNull RecyclerView.ViewHolder holder, final int position) {
switch (holder.getItemViewType()){
case 0:
ViewHolder1 viewHolder1 = (ViewHolder1)holder;
viewHolder1.tv_article_title.setText(mData.get(position).getTitle());
viewHolder1.img_article_thumbnail.setImageResource(mData.get(position).getThumbnail());
viewHolder1.cardView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(mContext, ArticlesActivity.class);
intent.putExtra("Title", mData.get(position).getTitle());
intent.putExtra("Description", mData.get(position).getDescription());
intent.putExtra("Thumbnail", mData.get(position).getThumbnail());
intent.putExtra("Category", mData.get(position).getCategory());
mContext.startActivity(intent);
}
});
break;
case 1:
ViewHolder2 viewHolder2 = (ViewHolder2)holder;
viewHolder2.tv_article_title2.setText(mData.get(position).getTitle());
viewHolder2.img_article_thumbnail2.setImageResource(mData.get(position).getThumbnail());
viewHolder2.cardView2.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(mContext, ArticlesActivity.class);
intent.putExtra("Title", mData.get(position).getTitle());
intent.putExtra("Description", mData.get(position).getDescription());
intent.putExtra("Thumbnail", mData.get(position).getThumbnail());
intent.putExtra("Category", mData.get(position).getCategory());
mContext.startActivity(intent);
}
});
break;
}
}
#Override
public int getItemCount() {
return mData.size();
}
public class ViewHolder1 extends RecyclerView.ViewHolder{
TextView tv_article_title;
ImageView img_article_thumbnail;
CardView cardView;
public ViewHolder1(#NonNull View itemView) {
super(itemView);
tv_article_title = (TextView) itemView.findViewById(R.id.article_title_id);
img_article_thumbnail = (ImageView) itemView.findViewById((R.id.article_image_id));
cardView = (CardView) itemView.findViewById(R.id.cardview_id);
}
}
public class ViewHolder2 extends RecyclerView.ViewHolder{
TextView tv_article_title2;
ImageView img_article_thumbnail2;
CardView cardView2;
public ViewHolder2(#NonNull View itemView) {
super(itemView);
tv_article_title2 = (TextView) itemView.findViewById(R.id.article_title_id2);
img_article_thumbnail2 = (ImageView) itemView.findViewById((R.id.article_image_id2));
cardView2 = (CardView) itemView.findViewById(R.id.cardview_id2);
}
}
}
Here is the Articles Class:
public class Articles {
private String Title;
private String Category;
private String Description;
private int Thumbnail;
public Articles(String title, String category, String description, int thumbnail) {
Title = title;
Category = category;
Description = description;
Thumbnail = thumbnail;
}
public String getTitle() {
return Title;
}
public String getCategory() {
return Category;
}
public String getDescription() {
return Description;
}
public int getThumbnail() {
return Thumbnail;
}
And here is the CardView -> layout_listitem Layout:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:card_view="http://schemas.android.com/tools"
android:layout_alignParentStart="true"
android:id="#+id/rview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:card_view="http://schemas.android.com/tools"
android:id="#+id/cardview_id"
android:layout_width="120dp"
android:layout_height="220dp"
android:clickable="true"
android:foreground="?android:attr/selectableItemBackground"
app:cardCornerRadius="0dp"
app:cardElevation="0dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="10dp"
android:orientation="vertical">
<ImageView
android:id="#+id/article_image_id"
android:layout_width="match_parent"
android:layout_height="160dp"
android:background="#2d2d2d"
android:scaleType="centerCrop"></ImageView>
<TextView
android:id="#+id/article_title_id"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:gravity="center"
android:text="Article Name"
android:textSize="14sp">
</TextView>
</LinearLayout>
</androidx.cardview.widget.CardView>
</LinearLayout>
And here is the CardView -> layout_listitem2 Layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:card_view="http://schemas.android.com/tools"
android:layout_alignParentStart="true"
android:id="#+id/rview2"
android:layout_below="#+id/rview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_marginTop="300dp">
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:card_view="http://schemas.android.com/tools"
android:id="#+id/cardview_id2"
android:layout_below="#id/cardview_id"
android:layout_width="120dp"
android:layout_height="220dp"
android:clickable="true"
android:foreground="?android:attr/selectableItemBackground"
app:cardCornerRadius="0dp"
app:cardElevation="0dp">
<LinearLayout
android:layout_marginTop="250dp"
android:layout_alignParentBottom="true"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="10dp"
android:orientation="vertical">
<ImageView
android:id="#+id/article_image_id2"
android:layout_width="match_parent"
android:layout_height="160dp"
android:background="#2d2d2d"
android:scaleType="centerCrop"></ImageView>
<TextView
android:id="#+id/article_title_id2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:gravity="center"
android:text="Article Name Sec"
android:textSize="14sp">
</TextView>
</LinearLayout>
</androidx.cardview.widget.CardView>
</LinearLayout>
ConstraintLayout is not a scrolling parent, so it will create problem if you add a long RecyclerView inside it.
So I made a few modifications to the above code and it has solved the both problems (Independent sliding and vertical alignment)
I have added another recyclerview in main_activity.xml
<LinearLayout 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"
android:orientation="vertical">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerview_id"
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
</androidx.recyclerview.widget.RecyclerView>
<androidx.recyclerview.widget.RecyclerView
android:layout_below="#+id/recyclerview_id2"
android:layout_marginTop="10dp"
android:id="#+id/recyclerview_id2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:ignore="NotSibling">
</androidx.recyclerview.widget.RecyclerView>
</LinearLayout>
I have also created another Adapter for the new recyclerview, seperated classes for both viewholders as well as removed the switch statements and itemViewType from RecyclerViewAdapter and RecyclerViewAdapter2 class :
public ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view;
LayoutInflater mInflater = LayoutInflater.from(mContext);
view = mInflater.inflate(R.layout.layout_listitem2,parent,false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull ViewHolder holder, final int position) {
holder.tv_article_title2.setText(mData.get(position).getTitle());
holder.img_article_thumbnail2.setImageResource(mData.get(position).getThumbnail());
holder.cardView2.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(mContext,ArticlesActivity.class);
intent.putExtra("Title",mData.get(position).getTitle());
intent.putExtra("Description",mData.get(position).getDescription());
intent.putExtra("Thumbnail",mData.get(position).getThumbnail());
intent.putExtra("Category",mData.get(position).getCategory());
mContext.startActivity(intent);
}
});
}
#Override
public int getItemCount() {
return mData.size();
}
public static class ViewHolder extends RecyclerView.ViewHolder{
TextView tv_article_title2;
ImageView img_article_thumbnail2;
CardView cardView2;
public ViewHolder(#NonNull View itemView) {
super(itemView);
tv_article_title2 = (TextView) itemView.findViewById(R.id.article_title_id2);
img_article_thumbnail2 = (ImageView) itemView.findViewById((R.id.article_image_id2));
cardView2 = (CardView) itemView.findViewById(R.id.cardview_id2);
}
}
I also edited the main_acitivty class by adding the new recyclerview and layout manager at the end:
LinearLayoutManager layoutManager2 = new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL,false);
RecyclerView recyclerView2 = findViewById(R.id.recyclerview_id2);
recyclerView2.setLayoutManager(layoutManager2);
RecyclerViewAdapter2 adapter2 = new RecyclerViewAdapter2(this, articlesData);
recyclerView2.setAdapter(adapter2);
Even though this workaround fixes both problems i was facing is there any other better/more refined way of doing this (eg by using single recyclerview) and where did i made the mistake in previous approach?
I have a RecyclerView with some dummy string data in each item. Each item has also a recyclerview which contains some other dummy data (A - Z, see below) that will be visible when a button is clicked.
The problem I have is that I can not scroll the recyclerview within the item as I want. When I scroll, only the outer recyclerview scrolls (as you seen below)
Here how is it look like:
Here are the code I wrote:
//MainActivity.java
public class MainActivity extends AppCompatActivity {
private RecyclerView mRecyclerView;
private StringAdapter mStringAdapter;
private ArrayList<String> mStrings = new ArrayList<>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mStrings.add("This");
mStrings.add("is");
mStrings.add("a");
mStrings.add("test");
mRecyclerView = (RecyclerView) findViewById(R.id.recyclerview);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
mStringAdapter = new StringAdapter(mStrings, this);
mRecyclerView.setAdapter(mStringAdapter);
}
}
Here, the adapter resonsible for the outer main recyclerview. Note that the recyclerview of each main recyclerview item gets visible when the button is clicked :
public class StringAdapter extends RecyclerView.Adapter<StringAdapter.ViewHolder> {
private ArrayList<String> mStrings;
private Context mContext;
private SomeInnerDataAdapter mSomeInnerDataAdapter;
public StringAdapter(ArrayList<String> strings, Context context) {
mStrings = strings;
mContext = context;
}
#NonNull
#Override
public StringAdapter.ViewHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int i) {
LayoutInflater inflater = LayoutInflater.from(viewGroup.getContext());
View view = inflater.inflate(R.layout.item, viewGroup, false);
return new StringAdapter.ViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull StringAdapter.ViewHolder viewHolder, int i) {
String text = mStrings.get(i);
viewHolder.onBindText(text);
}
#Override
public int getItemCount() {
return mStrings.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
private TextView mTextView;
private RecyclerView mRecyclerView;
private Button mButton;
public ViewHolder(#NonNull View itemView) {
super(itemView);
mTextView = (TextView) itemView.findViewById(R.id.textView);
mRecyclerView = (RecyclerView) itemView.findViewById(R.id.someOtherData);
mButton = (Button) itemView.findViewById(R.id.button);
mButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(mContext, "Item is clicked", Toast.LENGTH_LONG).show();
mRecyclerView.setVisibility(View.VISIBLE);
ArrayList<String> strings = new ArrayList<>();
strings.add("A");
strings.add("B");
strings.add("C");
strings.add("D");
strings.add("E");
strings.add("F");
strings.add("G");
strings.add("H");
strings.add("I");
strings.add("J");
strings.add("K");
strings.add("L");
strings.add("M");
strings.add("N");
strings.add("O");
strings.add("P");
strings.add("R");
strings.add("S");
strings.add("T");
strings.add("U");
strings.add("V");
strings.add("W");
strings.add("X");
strings.add("Y");
strings.add("Z");
mRecyclerView.setLayoutManager(new LinearLayoutManager(mContext, LinearLayoutManager.VERTICAL, false));
mSomeInnerDataAdapter = new SomeInnerDataAdapter(strings, mContext);
mRecyclerView.setAdapter(mSomeInnerDataAdapter);
}
});
}
public void onBindText(String text){
mTextView.setText(text);
}
}
}
The adapter responsible for the recyclerview within a item:
public class SomeInnerDataAdapter extends RecyclerView.Adapter<SomeInnerDataAdapter.ViewHolder> {
private ArrayList<String> mStrings;
private Context mContext;
public SomeInnerDataAdapter(ArrayList<String> strings, Context context) {
mStrings = strings;
mContext = context;
}
#NonNull
#Override
public SomeInnerDataAdapter.ViewHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int i) {
LayoutInflater inflater = LayoutInflater.from(viewGroup.getContext());
View view = inflater.inflate(R.layout.someotherdata_item, viewGroup, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull SomeInnerDataAdapter.ViewHolder viewHolder, int i) {
String text = mStrings.get(i);
viewHolder.onBindString(text);
}
#Override
public int getItemCount() {
return mStrings.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
private TextView mTextView;
public ViewHolder(#NonNull View itemView) {
super(itemView);
mTextView = (TextView) itemView.findViewById(R.id.someotherdata_textview);
}
public void onBindString(String text){
mTextView.setText(text);
}
}
}
The xml layouts are the following:
// item.xml
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/textView"
android:layout_gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<android.support.v7.widget.RecyclerView
android:id="#+id/someOtherData"
android:layout_gravity="right"
android:visibility="invisible"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:scrollbars="vertical" />
<Button
android:id="#+id/button"
android:text="show comment"
android:layout_gravity="bottom|center"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</FrameLayout>
and someotherdata_item.xml:
<TextView
android:id="#+id/someotherdata_textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="TextView"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android" />
I'm creating an Activity Log for Lock and Unlock times, and I need my background color sorted according to Lock or Unlock. However, I cant seem to change the background color of my linear layout no matter what I put. Any help is greatly appreciated thank you!
This is my main Activity
public class MainActivity extends AppCompatActivity {
private RecyclerView recyclerView;
private RecyclerView.Adapter adapter;
private List<ListItem> listItems;
DatabaseReference database;
#Override
protected void onCreate(Bundle savedInstanceState) {
LayoutInflater inflater = LayoutInflater.from(getApplicationContext());
View view = inflater.inflate(R.layout.list_item, null);
final LinearLayout layout= (LinearLayout) view.findViewById(R.id.damsi);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView = (RecyclerView) findViewById(R.id.recyclerView);
recyclerView.setHasFixedSize(true);
// SharedPreferences preferences=getSharedPreferences(LOCK_PREFS,MODE_PRIVATE);
database = FirebaseDatabase.getInstance().getReference("Activity Log/device321");
listItems = new ArrayList<>();
database.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
for (DataSnapshot usersnapshot : dataSnapshot.getChildren()) {
Map<String, String> map = (Map<String, String>) usersnapshot.getValue();
for (Map.Entry<String, String> entry : map.entrySet()) {
if (entry.getKey().equals("LockTime")) {
System.out.println(entry.getKey());
layout.setBackgroundColor(Color.parseColor("#FFB71616"));
}
if (entry.getKey().equals("UnlockTime")) {
System.out.println(entry.getKey());
layout.setBackgroundColor(Color.parseColor("#FFB71616"));
}
listItems.add(new ListItem(entry.getKey(), entry.getValue()));
}
// ListItem listItem = usersnapshot.getValue(ListItem.class);
}
recyclerView.setLayoutManager(new LinearLayoutManager(MainActivity.this));
adapter = new MyAdapter(listItems, MainActivity.this);
recyclerView.setAdapter(adapter);
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
}
}
This is My XML file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="#dimen/text_margin">
<LinearLayout
android:id="#+id/damsi"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#baa40f"
android:orientation="vertical"
android:padding="16dp"
android:visibility="visible">
<TextView
android:id="#+id/textViewHead"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#ffffff"
android:text="Heading"
android:textAppearance="#style/Base.TextAppearance.AppCompat.Large" />
<TextView
android:id="#+id/textViewDesc"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff"
android:text="Description" />
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
MyAdapter
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
private List<ListItem> listItems;
private Context context;
public MyAdapter(List<ListItem> listItems, Context context) {
this.listItems = listItems;
this.context = context;
}
#NonNull
#Override
public ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.list_item, parent, false);
return new ViewHolder(v);
}
#Override
public void onBindViewHolder(#NonNull ViewHolder holder, int position) {
ListItem listItem = listItems.get(position);
holder.textViewHead.setText(listItem.getHead());
holder.textViewDesc.setText(listItem.getDesc());
}
#Override
public int getItemCount() {
return listItems.size();
}
public class ViewHolder extends RecyclerView.ViewHolder{
public LinearLayout layout;
public TextView textViewHead;
public TextView textViewDesc;
public ViewHolder(View itemView) {
super(itemView);
textViewHead = (TextView) itemView.findViewById(R.id.textViewHead);
textViewDesc = (TextView) itemView.findViewById(R.id.textViewDesc);
}
}
}
Remove this code from MainActivity
LayoutInflater inflater = LayoutInflater.from(getApplicationContext());
View view = inflater.inflate(R.layout.list_item, null);
final LinearLayout layout= (LinearLayout) view.findViewById(R.id.damsi);
Remove these lines from OnDataChangedMethod
if (entry.getKey().equals("LockTime")) {
System.out.println(entry.getKey());
layout.setBackgroundColor(Color.parseColor("#FFB71616"));
}
if (entry.getKey().equals("UnlockTime")) {
System.out.println(entry.getKey());
layout.setBackgroundColor(Color.parseColor("#FFB71616"));
}
In your ViewHolder class, add these lines in your viewholder constructor.
layout= (LinearLayout) view.findViewById(R.id.damsi);
Add these lines in onBindViewHolder method.
String key = listItem.getHead();
if(key.equals("LockTime"))
{
System.out.println(entry.getKey());
layout.setBackgroundColor(Color.parseColor("#FFB71616"));
}
if(key..equals("UnlockTime")){
System.out.println(entry.getKey());
layout.setBackgroundColor(Color.parseColor("#FF001600"));
//I changed the color as both were having same hexcodes :P
}
holder.textViewHead.setText(listItem.getHead());
holder.textViewDesc.setText(listItem.getDesc());
I have to implement a custom horizontal RecyclerView having a header (title) at top and a section (See All) right side at the end of the RecyclerView.
I created a RecyclerView with a header and footer but I want to have a right sided section (See All) of which onclick event I wish to fire some event.
In Paytm App, it is implemented
I wish to get results as follows
This will Gives You Idea
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:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="5dp"
android:paddingLeft="5dp"
android:paddingRight="5dp"
android:paddingTop="5dp">
<android.support.v7.widget.RecyclerView
android:id="#+id/verticalScrollRecyclerView"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</android.support.v7.widget.RecyclerView></RelativeLayout>
vertical_scroll_single_entry.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="100dp"
android:weightSum="1"
android:gravity="center_vertical">
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1">
</android.support.v7.widget.RecyclerView>
<Button
android:id="#+id/selectAllButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="See All >>"
android:textAllCaps="false"/></LinearLayout>
Custom Adapter class For Vertical Scroller
public class CustomAdapter extends RecyclerView.Adapter<CustomAdapter.CustomViewHolder> {
private Context context;
private ArrayList arrayList;
private LayoutInflater layoutInflater;
public CustomAdapter(Context context, ArrayList arrayList) {
this.context = context;
this.layoutInflater = LayoutInflater.from(context);
this.arrayList = arrayList;
}
#Override
public CustomViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = layoutInflater.inflate(R.layout.vertical_scroll_single_entry, parent, false);
return new CustomViewHolder(view);
}
#Override
public void onBindViewHolder(CustomViewHolder holder, int position) {
//initialise values to views inside holder at runtime
holder.recyclerView.setAdapter(new CustomAdapterTwo(context, arrayList));
holder.recyclerView.setLayoutManager(new LinearLayoutManager(context, LinearLayoutManager.HORIZONTAL, false));
holder.recyclerView.setHasFixedSize(true);
}
#Override
public int getItemCount() {
return arrayList.size();
}
class CustomViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
RecyclerView recyclerView;
Button selectAllButton;
public CustomViewHolder(View itemView) {
super(itemView);
recyclerView = (RecyclerView) itemView.findViewById(R.id.recyclerView);
selectAllButton = (Button) itemView.findViewById(R.id.selectAllButton);
selectAllButton.setOnClickListener(this);
}
#Override
public void onClick(View v) {
Toast.makeText(context, "Select All At : " + String.valueOf(getLayoutPosition()), Toast.LENGTH_SHORT).show();
}
}}
horizontal adapter single entry file recycler_view_single_item.xml
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="wrap_content"
android:layout_height="match_parent" android:gravity="center_horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Price"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Remove this button \n and put image view"
android:textAllCaps="false"/></LinearLayout>
Horizontal recycler view adapter class
public class CustomAdapterTwo extends RecyclerView.Adapter<CustomAdapterTwo.CustomViewHolder> {
private Context context;
private ArrayList arrayList;
private LayoutInflater layoutInflater;
public CustomAdapterTwo(Context context, ArrayList arrayList) {
this.context = context;
this.arrayList = arrayList;
this.layoutInflater = LayoutInflater.from(context);
}
#Override
public CustomViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = layoutInflater.inflate(R.layout.recycler_view_single_item, parent, false);
return new CustomViewHolder(view);
}
#Override
public void onBindViewHolder(CustomViewHolder holder, int position) {
}
#Override
public int getItemCount() {
return arrayList.size();
}
class CustomViewHolder extends RecyclerView.ViewHolder {
public CustomViewHolder(View itemView) {
super(itemView);
}
}}
Your main activity class
public class MainActivity extends AppCompatActivity {
private RecyclerView verticalScrollRecyclerView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initialiseView();
}
private void initialiseView() {
verticalScrollRecyclerView = (RecyclerView) findViewById(R.id.verticalScrollRecyclerView);
ArrayList<String> stringArrayList = new ArrayList<>();
stringArrayList.add("One");
stringArrayList.add("Two");
stringArrayList.add("Three");
stringArrayList.add("Four");
stringArrayList.add("Five");
stringArrayList.add("Six");
stringArrayList.add("Seven");
stringArrayList.add("Eight");
stringArrayList.add("Nine");
stringArrayList.add("Ten");
//setting adapter and layout manager to recyclerView
verticalScrollRecyclerView.setLayoutManager(new LinearLayoutManager(this));
verticalScrollRecyclerView.setAdapter(new CustomAdapter(this, stringArrayList));
verticalScrollRecyclerView.setHasFixedSize(true);
}}
Looks Like
I want to make RecyclerView like this one:
But in my case, child view doesn't set as width="wrap_content" or it RecyclerView doesn't set as width="wrap_content" and on "center"
Here is RecyclerView in activity_layout.xml:
<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.support.v7.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</RelativeLayout>
Here is setting Adapter onCreate:
public void initRecyclerView(List<Invitation> invitationList) {
recyclerView.setHasFixedSize(true);
GridLayoutManager manager = new GridLayoutManager(this, 4);
recyclerView.setLayoutManager(manager);
recyclerView.setAdapter(new ItemGridAdapter(getApplicationContext(), invitationList));
}
here is my Adapter:
public class ItemGridAdapter extends RecyclerView.Adapter<ItemGridAdapter.ViewHolderItem> {
private final Context context;
private final List<Invitation> list;
private final DrawableHelper drawableHelper;
public ItemGridAdapter(Context context, List<Invitation> list) {
this.context=context;
this.list=list;
this.drawableHelper = new DrawableHelper();
}
#Override
public ItemGridAdapter.ViewHolderItem onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_grid, parent, false);
return new ItemGridAdapter.ViewHolderItem(context,view);
}
#Override
public void onBindViewHolder(final ItemGridAdapter.ViewHolderItem viewHolder, int position) {
Invitation invitation = list.get(position);
viewHolder.position=position;
Picasso.with(context)
.load(invitation.getCustomUser().getAvatar())
.transform(new CircleTransformation())
.placeholder(drawableHelper.getDrawableForName(invitation.getCustomUser().getFullName()))
.into(viewHolder.userIcon);
if (invitation.getYelpID()!=null&&invitation.getYelpID().length()>0){
viewHolder.votedIcon.setVisibility(View.VISIBLE);
}else{
viewHolder.votedIcon.setVisibility(View.GONE);
}
}
#Override
public int getItemCount() {
return list.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public static class ViewHolderItem extends RecyclerView.ViewHolder {
public ImageView votedIcon;
public ImageView userIcon;
Context mContext;
int position;
public ViewHolderItem(Context mContext,View itemView) {
super(itemView);
this.mContext = mContext;
userIcon=(ImageView)itemView.findViewById(R.id.userIcon);
votedIcon = (ImageView)itemView.findViewById(R.id.votedIcon);
}
}
}
here is layout of item R.layout.item_grid for adapter :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center">
<ImageView
android:background="#drawable/white_circle"
android:padding="3dp"
android:id="#+id/userIcon"
android:layout_width="50dp"
android:layout_height="50dp"/>
<ImageView
android:id="#+id/votedIcon"
android:layout_width="20dp"
android:layout_height="20dp"
android:src="#drawable/icon_voted"/>
</RelativeLayout>
Android Support Library as of 23.2 supports this WRAP_CONTENT in RecyclerView by default.