I want to make a ListView inside a RecyclerView that should display some data in a list form. I currently have a basic Adapter and RecyclerView with no ListView inside of it, so can someone tell me how to modify my code to include a listview inside the RecyclerView?
Adapter:
public class RVAdapter extends RecyclerView.Adapter<RVAdapter.AdapterViewHolder> {
public static class AdapterViewHolder extends RecyclerView.ViewHolder {
TextView title;
TextView summary;
AdapterViewHolder(View itemView) {
super(itemView);
title = (TextView) itemView.findViewById(R.id.recycler_list_title);
summary = (TextView) itemView.findViewById(R.id.recycler_list_summary);
}
}
List<Items> items;
public RVAdapter(List<Items> items){
this.items = items;
}
#Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
}
#Override
public AdapterViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.list_recycler, viewGroup, false);
AdapterViewHolder pvh = new AdapterViewHolder(v);
return pvh;
}
#Override
public void onBindViewHolder(AdapterViewHolder adapterViewHolder, int i) {
adapterViewHolder.title.setText(item.get(i).title);
adapterViewHolder.summary.setText(item.get(i).summary);
}
#Override
public int getItemCount() {
return item.size();
}
}
Items:
public class Items {
String title;
String summary;
public Items(String title, String summary) {
this.title = title;
this.summary = summary;
}
}
Layout:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:scrollbars="vertical"
android:layout_marginTop="0dp" />
</LinearLayout>
list_recycler:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:paddingRight="?android:attr/scrollbarSize">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="15dp"
android:layout_marginEnd="6dp"
android:layout_marginTop="6dp"
android:layout_marginBottom="6dp">
<TextView
android:id="#+id/recycler_list_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#color/textColor"
android:textSize="16sp"
android:layout_alignParentLeft="true"/>
<TextView
android:id="#+id/recycler_list_summary"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#color/textColorSub"
android:textSize="14sp"
android:layout_alignParentRight="true" />
</RelativeLayout>
</LinearLayout>
How I'm creating the ListView:
private List item;
private RecyclerView rv;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
rv = (RecyclerView) ((Activity) MainActivity.context).findViewById(R.id.recycler);
rv.setHasFixedSize(true);
rv.setLayoutManager(new LinearLayoutManager(this));
initializeData();
initializeAdapter();
}
private void initializeData(){
item = new ArrayList<>();
item.add(new Items("Title", "Summary"));
}
private void initializeAdapter() {
RVAdapter adapter = new RVAdapter(item);
rv.setAdapter(adapter);
}
}
ListView listview = (ListView) findViewById(R.id.listview);
ListView parentListView=(ListView)listview.getParent();
you can get parent listView by this way
Related
I tried the solutions on the other similar posts that I found here but they did not help me. I hope someone can help.
I get data from Unsplash's API and the ArrayList contains 10 items once I get a response, that's why I think It has to be something with the way the view is inflated.
This is code:
public class MainActivity extends AppCompatActivity {
private static final String TAG = "unsplash";
private final String CLIENT_ID = "...myclientID...";
// testing keyword used on the API to search for pictures
private final String KEYWORD = "stackOverflow";
private final String urlBase = "https://api.unsplash.com/";
private Retrofit retrofit;
private RecyclerView recyclerView;
private RecyclerViewAdapter recyclerViewAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
retrofit = new Retrofit.Builder()
.baseUrl(urlBase)
.addConverterFactory(GsonConverterFactory.create())
.build();
recyclerView = findViewById(R.id.recyclerview);
recyclerView.setHasFixedSize(true);
GridLayoutManager layoutManager = new GridLayoutManager(this, 2);
recyclerView.setLayoutManager(layoutManager);
recyclerViewAdapter = new RecyclerViewAdapter();
recyclerView.setAdapter(recyclerViewAdapter);
getData();
}
private void getData() {
PictureService service = retrofit.create(PictureService.class);
Call<PictureResponse> pictureResponseCall = service.getPictureList(KEYWORD, CLIENT_ID);
pictureResponseCall.enqueue(new Callback<PictureResponse>() {
#Override
public void onResponse(Call<PictureResponse> call, Response<PictureResponse> response) {
if (response.isSuccessful()){
PictureResponse pictureResponse = response.body();
ArrayList<UnsplashPic> pictureList = pictureResponse.getResults();
recyclerViewAdapter.addPictures(pictureList);
}else{
Log.e (TAG, " onResponse " + response.errorBody());
}
}
#Override
public void onFailure(Call<PictureResponse> call, Throwable t) {
Log.e (TAG, " onFailure " + t.getMessage());
}
});
}
}
My adapter class:
public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder> {
private ArrayList<UnsplashPic> pictureList;
public RecyclerViewAdapter (){
pictureList = new ArrayList<>();
}
#NonNull
#Override
public ViewHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.item_view_holder, viewGroup, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull ViewHolder viewHolder, int i) {
UnsplashPic pic = pictureList.get(i);
viewHolder.artistName.setText(pic.user.getUsername());
viewHolder.unsplash.setText("Unsplash");
}
#Override
public int getItemCount() {
return pictureList.size();
}
public void addPictures(ArrayList<UnsplashPic> pictureList) {
pictureList.addAll(pictureList);
notifyDataSetChanged();
}
public class ViewHolder extends RecyclerView.ViewHolder {
private ImageView imageView;
private TextView artistName;
private TextView unsplash;
public ViewHolder (View itemView){
super(itemView);
imageView = itemView.findViewById(R.id.imageview);
artistName = itemView.findViewById(R.id.artist_name);
unsplash = itemView.findViewById(R.id.unsplash_name);
}
}
}
item_view_holder.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="wrap_content"
android:orientation="vertical">
<ImageView
android:id="#+id/imageview"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_gravity="center"
android:background="#ababab"
android:contentDescription="unsplash picture" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_gravity="center">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Photo by "/>
<TextView
android:id="#+id/artist_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="on "/>
<TextView
android:id="#+id/unsplash_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true" />
</LinearLayout>
activity_main.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"
android:orientation="vertical"
tools:context=".MainActivity">
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="Search for pictures"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Search"/>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/recyclerview">
</android.support.v7.widget.RecyclerView>
</LinearLayout>
Here:
public void addPictures(ArrayList<UnsplashPic> pictureList) {
pictureList.addAll(pictureList);
notifyDataSetChanged();
}
you are actually adding the content of the pictureList you send as parameter of the function to that same list, your list from adapter is not updated.
You should do like this instead:
public void addPictures(ArrayList<UnsplashPic> pictureList) {
this.pictureList.addAll(pictureList);
notifyDataSetChanged();
}
I have created RecyclerView and showing data from JSON.
Issue I'm facing is, while Toast data is showing correctly, but in RecyclerView same data is not appear.
Here is code:
public class MainActivity extends AppCompatActivity {
private static final int NUM_LIST_ITEMS = 100;
private static final String TOKEN =
"71cf2d3dec294394e267fbb0bf28916f4198f8d6";
private CuloAdapter culoAdapter;
List<Hotel> lh = new ArrayList<>();
RecyclerView recyclerView;
#Override
protected void attachBaseContext(Context newBase) {
super.attachBaseContext(newBase);
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView = findViewById(R.id.rv_tiketapi);
LinearLayoutManager layout = new LinearLayoutManager(this);
layout.setOrientation(LinearLayoutManager.VERTICAL);
recyclerView.setLayoutManager(layout);
CuloAdapter ar = new CuloAdapter(lh);
recyclerView.setAdapter(ar);
loadHotelLocation();
}
private void loadHotelLocation() {
final search apiService = ApiService.getService(search.class);
retrofit2.Call<SingleResult<Hotel>> call = apiService.findHotel(TOKEN,
"json");
call.enqueue(new Callback<SingleResult<Hotel>>() {
#Override
public void onResponse(retrofit2.Call<SingleResult<Hotel>> call,
Response<SingleResult<Hotel>> response) {
if (response.body().getDiagnostic().isSuccess()) {
//SingleResult.ResultList list =
response.body().getResults();
List<Hotel> mHotels = (List<Hotel>)
response.body().getResults().getResult();
lh.addAll(mHotels);
Toast.makeText(getApplicationContext(), "OK" +lh,
Toast.LENGTH_LONG).show();
}
}
#Override
public void onFailure(retrofit2.Call<SingleResult<Hotel>> call,
Throwable t) {
}
});
}
RecyclerView Adapter :
public class CuloAdapter extends
RecyclerView.Adapter<CuloAdapter.ViewHolder> {
public CuloAdapter(List<Hotel> lh) {
this.items = lh;
}
public static class ViewHolder extends RecyclerView.ViewHolder {
public TextView txtTitle;
public TextView txtSubTitle;
public ImageView imgIcon;
public ViewHolder(final View container) {
super(container);
txtTitle = (TextView) container.findViewById(R.id.airportName);
txtSubTitle = (TextView) container.findViewById(R.id.airportCode);
}
}
private List<Hotel> items;
public CuloAdapter(final Activity activity, List<Hotel> items) {
this.items = items;
}
#Override
public int getItemCount() {
return items.size();
}
#Override
public void onBindViewHolder(CuloAdapter.ViewHolder holder, int position) {
Hotel item = items.get(position);
holder.txtTitle.setText(item.getLabel());
holder.txtSubTitle.setText(item.getId());
}
#Override
public CuloAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int
viewType) {
// create a new view
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.item_flight, parent, false);
return new ViewHolder(v);
}
}
MainActivity XML :
<?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:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.admin.exampletiketapi.MainActivity">
<EditText
android:id="#+id/et_find"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAlignment="center" />
<android.support.v7.widget.RecyclerView
android:id="#+id/rv_tiketapi"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</android.support.v7.widget.RecyclerView>
</LinearLayout>
Item List XML :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/airportsLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:paddingTop="10dp">
<TextView
android:id="#+id/airportName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:text="Soekarno Hatta" />
<TextView
android:id="#+id/airportCode"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:text="20" />
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginTop="5dp"
android:background="#DDD"
android:visibility="visible" />
</LinearLayout>
In your code you are trying to set adapter before loading data.
CuloAdapter ar = new CuloAdapter(lh);
recyclerView.setAdapter(ar);
loadHotelLocation();
What i found is You are getting data in loadHotelLocation(), but trying to set adpter before that,
Call notifyDatasetChanged after lh.addAll(mHotels). And check for null's else you are heading for crash in case search results are zero/null
Hello so I created a simple app that uses cardview and recycler View to display images .
Now when I run the app only a blank app with the name of the app shows up
Here is the code
Main Activity File
public class MainActivity extends AppCompatActivity {
RecyclerView recyclerView;
List<listItem> item;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView = (RecyclerView) findViewById(R.id.recycler_Container);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
myAdapter adapter = new myAdapter(dataFile.getListData());
recyclerView.setAdapter(adapter);
}}
Adapter File
public class myAdapter extends RecyclerView.Adapter<myAdapter.pageHolder> {
List<listItem> listData;
LayoutInflater inflater;
public myAdapter(List<listItem> listData) {
this.listData = listData;
}
public class pageHolder extends RecyclerView.ViewHolder{
ImageView image;
TextView text;
View container;
public pageHolder(View itemView) {
super(itemView);
image = (ImageView) itemView.findViewById(R.id.thumbnail);
text = (TextView) itemView.findViewById(R.id.card_text);
container = itemView.findViewById(R.id.layout_container);
}}
#Override
public myAdapter.pageHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.card,parent,false);
return new pageHolder(view);
}
#Override
public void onBindViewHolder(myAdapter.pageHolder holder, int position) {
listItem item =listData.get(position);
holder.text.setText(item.getTitle());
holder.image.setImageResource(item.getIconId());
}
#Override
public int getItemCount() {
return listData.size();
}}
list Item File
public class listItem {
String title;
int iconId;
public listItem(int iconId, String title) {
this.iconId = iconId;
this.title = title;
}
public int getIconId() {
return iconId;
}
public void setIconId(int iconId) {
this.iconId = iconId;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}}
data File
public class dataFile {
public static int icons[]={R.drawable.album9,R.drawable.album1,R.drawable.album3,R.drawable.album4,R.drawable.album5,R.drawable.album6,
R.drawable.album7,R.drawable.album8,R.drawable.album10,R.drawable.album11,R.drawable.album12,R.drawable.album13,R.drawable.album14,R.drawable.album15,
R.drawable.album16};
public static String title[] = {"Album"};
public static List<listItem> getListData(){
List<listItem> data = new ArrayList<>();
for(int i =0;i<icons.length;i++){
new listItem(icons[i],"ALBUM"+i);
}
return data;
}}
Main XML file
<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"
tools:context="com.example.adi.customcardview.MainActivity">
<android.support.v7.widget.RecyclerView
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:padding="16dp"
android:id="#+id/recycler_Container"/></RelativeLayout>
Card Layout XML file
<?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"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/layout_container"
app:cardCornerRadius="5dp"
app:cardBackgroundColor="#efdada"
app:cardElevation="5dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:id="#+id/thumbnail"
android:padding="12dp"
android:src="#drawable/album9"/>
<TextView
android:text="ALBUM NAME"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="55dp"
android:id="#+id/card_text"
android:textSize="18sp"
android:layout_alignParentTop="true"
android:layout_toEndOf="#+id/thumbnail"/>
</RelativeLayout></android.support.v7.widget.CardView></LinearLayout>
As I understand, in the getListData method you are not adding the listItem elements to the data List. So try to change the method as follows:
public static List<listItem> getListData(){
List<listItem> data = new ArrayList<>();
for(int i =0;i<icons.length;i++){
data.add(new listItem(icons[i],"ALBUM"+i));
}
return data;
}
The problem is each and every time when I send the edittext field from pressing save button I think the items are being overlapped or it may be every time i add the values from edit text field old one may be replaced by new values.They are not appearing in the list.
This is the class from where i send the edit text fields
public class MyEditor extends AppCompatActivity {
EditText textIn,txtHeading;
Button buttonAdd,btnsave;
ArrayList<String> nameList = new ArrayList<String>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.editor);
txtHeading = (EditText)findViewById(R.id.heading);
buttonAdd = (Button)findViewById(R.id.add);
btnsave =(Button) findViewById(R.id.btn_save);
btnsave.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String newName = txtHeading.getText().toString();
Intent intent = new Intent(getApplicationContext(),BuilderPage.class);
intent.putStringArrayListExtra("key", nameList);
nameList.add(newName);
int listsize = nameList.size();
for (int i=0;i<listsize;i++){
Log.i("Lists are", nameList.get(i)) ;
}
startActivity(intent);
Toast.makeText(MyEditor
.this,"You added" +newName.toUpperCase()+ "in your view",Toast.LENGTH_LONG).show();
}
});
}
}
This is my Layout that contains RecyclerView.
<?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"
android:id="#+id/coordinatorLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView_builderxml"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:animateLayoutChanges="false"
android:orientation="vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
<android.support.design.widget.AppBarLayout
android:id="#+id/appBarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar_builderxml"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways" >
<EditText
android:layout_width="350dp"
android:id="#+id/edittxtsurvey"
android:layout_height="wrap_content"
android:hint="Enter Your SurveyName"/>
</android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>
<RelativeLayout android:id="#+id/LinearLayout01"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:gravity="bottom" >
<SlidingDrawer android:layout_width="wrap_content"
android:id="#+id/SlidingDrawer"
android:handle="#+id/slideHandleButton"
android:content="#+id/contentLayout"
android:padding="10dip"
android:layout_height="120dip">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/slideHandleButton"
android:src="#drawable/arrowdown">
</ImageView>
<RelativeLayout
android:layout_width="wrap_content"
android:background="#1a237e"
android:id="#+id/contentLayout"
android:gravity="center|top"
android:padding="10dip"
android:layout_height="wrap_content">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/plaintext"
android:id="#+id/imgviewplaintext"
android:padding="5dp"
android:onClick="oOnClick_PlainText"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/checkbox"
android:id="#+id/imgviewcheckbox"
android:onClick="OnClick_CheckBox"
android:padding="5dp"
android:layout_alignParentTop="true"
android:layout_toLeftOf="#+id/imgviewradiobutton"
android:layout_toStartOf="#+id/imgviewradiobutton"
android:layout_marginRight="21dp"
android:layout_marginEnd="21dp" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/radio"
android:id="#+id/imgviewradiobutton"
android:padding="5dp"
android:onClick="OnClick_RadioButton"
android:layout_alignParentTop="true"
android:layout_toLeftOf="#+id/imgviewtextbox"
android:layout_toStartOf="#+id/imgviewtextbox"
android:layout_marginRight="37dp"
android:layout_marginEnd="37dp" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/textbox"
android:id="#+id/imgviewtextbox"
android:onClick="onClick_textbox"
android:padding="5dp"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_marginRight="30dp"
android:layout_marginEnd="30dp" />
</RelativeLayout>
</SlidingDrawer>
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>
This is my Builder class that contains Builder xml.
public class BuilderPage extends ActionBarActivity implements RecyclerViewAdapter.OnItemClickListener {
private RecyclerView myRecyclerView;
private LinearLayoutManager linearLayoutManager;
private RecyclerViewAdapter myRecyclerViewAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.builder_layout);
ButterKnife.bind(this);
setSupportActionBar(toolbar1);
getSupportActionBar().setDisplayShowTitleEnabled(false);
dbHelper = new DbHelper(this);
dbHelper.getWritableDatabase();
ArrayList<String> nameList = getIntent().getStringArrayListExtra("key");
myRecyclerView = (RecyclerView)findViewById(R.id.recyclerView_builderxml);
linearLayoutManager =
new LinearLayoutManager(this,
LinearLayoutManager.VERTICAL,false);
myRecyclerViewAdapter = new RecyclerViewAdapter(this,nameList);
myRecyclerView.setAdapter(myRecyclerViewAdapter);
myRecyclerView.setLayoutManager(linearLayoutManager);
myRecyclerViewAdapter.setOnItemClickListener(this);
This my Adapter class
public class RecyclerViewAdapter extends
RecyclerView.Adapter<RecyclerViewAdapter.ItemHolder> {
private List<String> itemsName;
private OnItemClickListener onItemClickListener;
private LayoutInflater layoutInflater;
public RecyclerViewAdapter(Context context,ArrayList<String> nameList){
layoutInflater = LayoutInflater.from(context);
itemsName = nameList;
}
#Override
public RecyclerViewAdapter.ItemHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = layoutInflater.inflate(R.layout.text_view,parent, false);
return new ItemHolder(itemView, this);
}
#Override
public void onBindViewHolder(RecyclerViewAdapter.ItemHolder holder, int position) {
holder.setItemName(itemsName.get(position));
}
#Override
public int getItemCount() {
return (null != itemsName ? itemsName.size() : 0);
}
public void setOnItemClickListener(OnItemClickListener listener){
onItemClickListener = listener;
}
public OnItemClickListener getOnItemClickListener(){
return onItemClickListener;
}
public interface OnItemClickListener{
public void onItemClick(ItemHolder item, int position);
}
public static class ItemHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
private RecyclerViewAdapter parent;
TextView textItemName;
public ItemHolder(View itemView, RecyclerViewAdapter parent) {
super(itemView);
itemView.setOnClickListener(this);
this.parent = parent;
textItemName = (TextView) itemView.findViewById(R.id.herecomes);
}
public void setItemName(CharSequence name){
textItemName.setText(name);
}
public CharSequence getItemName(){
return textItemName.getText();
}
#Override
public void onClick(View v) {
final OnItemClickListener listener = parent.getOnItemClickListener();
if(listener != null){
listener.onItemClick(this, getPosition());
}
}
}}
You are using same textitemname everytime.change
#Override
public void onBindViewHolder(RecyclerViewAdapter.ItemHolder holder, int position) {
holder.setItemName(itemsName.get(position));
}
to
#Override
public void onBindViewHolder(RecyclerViewAdapter.ItemHolder holder, int position) {
holder.textItemName.setText(itemsName.get(position));
}
I want to create a list of items that have a background image and a TextView. Although it creates the RecyclerView normally and sets the text, the background image doesn't set.
This is my Adapter Class
public class Casino_Adapter extends RecyclerView.Adapter<Casino_Adapter.ViewHolder> {
private Data[] mDataset;
private ClickListener clickListener;
public Context context;
// Provide a suitable constructor (depends on the kind of dataset)
public Casino_Adapter(Data[] myDataset) {
this.mDataset = myDataset;
this.context = context;
}
#Override
public Casino_Adapter.ViewHolder onCreateViewHolder(ViewGroup parent,
int viewType) {
// create a new view
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.casino_card_row, parent, false);
// set the view's size, margins, paddings and layout parameters
ViewHolder vh = new ViewHolder(v);
return vh;
}
public static class ViewHolder extends RecyclerView.ViewHolder {
private final Context context = null;
// each data item is just a string in this case
public TextView mTextView;
public ImageView mImageView;
public CardView cardView;
//Typeface tf;
public ViewHolder(View v) {
super(v);
mTextView = (TextView) v.findViewById(R.id.text);
mImageView = (ImageView) v.findViewById(R.id.image);
cardView = (CardView) v.findViewById(R.id.card_view);
//cardView.setPreventCornerOverlap(false);
}
}
// Replace the contents of a view (invoked by the layout manager)
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
// - get element from your dataset at this position
// - replace the contents of the view with that element
holder.mTextView.setText(mDataset[position].getText());
holder.mImageView.setImageResource(mDataset[position].getImage());
}
public void setClickListener(ClickListener clickListener) {
this.clickListener = clickListener;
}
// Return the size of your dataset (invoked by the layout manager)
#Override
public int getItemCount() {
return mDataset.length;
}
public interface ClickListener {
public void itemClicked(View view, int pos);
}
}
I have a Fragment Class where I want the RecyclerView to be.
public class CasinoFragment extends Fragment {
protected RecyclerView recyclerView;
protected RecyclerView.Adapter mAdapter;
protected RecyclerView.LayoutManager mLayoutManager;
public CasinoFragment() {
// Required empty public constructor
}
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
initial();
}
private void initial() {
final Data datas[] =
{
new Data("This is an item", R.drawable.ic_home_white_36dp),
new Data("This is an item 2", R.drawable.car),
new Data("asdasd`sdads", R.drawable.car),
new Data("This is an item 3", R.drawable.car)
};
mAdapter = new Casino_Adapter(datas);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_casino, container, false);
recyclerView = (RecyclerView) view.findViewById(R.id.my_recycler_view);
mLayoutManager = new LinearLayoutManager(getActivity());
recyclerView.setLayoutManager(mLayoutManager);
recyclerView.setAdapter(mAdapter);
return view;
}
}
And these are the Setters that I use.
public class Data {
int image;
String text;
public Data(String title, int backimage)
{
this.text = title;
this.image = backimage;
}
public String getText()
{
return text;
}
public int getImage()
{
return image;
}
public void setText()
{
this.text=text;
}
public void setImageID()
{
this.image = image;
}
}
Casino Row 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="wrap_content"
card_view:cardCornerRadius="8dp"
android:layout_margin="5dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#111111"
>
<ImageView
android:layout_width="match_parent"
android:layout_height="200dp"
android:id="#+id/image"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:adjustViewBounds="true"
android:scaleType="centerCrop"
android:background="#drawable/image_round"
android:src="#drawable/car" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="200dp"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignBottom="#+id/image"
android:id="#+id/rel_color"
android:background="#4c4c4c">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Μπύρα"
android:textColor="#fcfcfc"
android:textSize="30sp"
android:shadowColor="#000000"
android:shadowDx="3"
android:shadowDy="3"
android:shadowRadius="5"
android:id="#+id/text"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
</RelativeLayout>
</RelativeLayout>
</android.support.v7.widget.CardView>
The result I get is the following.
The reason why you aren't seeing your image, is because it isn't actually visible.
Your rel_color layout has the same size attributes as your ImageView.
If you want to display a layout above the ImageView, you just need to remove the background of it, otherwise the ImageView will be hidden.
Just Like that. but remember your images dimensions must be low. in my case i used 200x200
<?xml version="1.0" encoding="utf-8"?>
<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/rl_menu_item"
android:layout_width="match_parent"
android:layout_height="150dp"
android:layout_margin="5dp"
android:background="#android:color/transparent"
card_view:cardCornerRadius="4dp"
card_view:cardUseCompatPadding="true">
<RelativeLayout
android:id="#+id/img_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/bg_blrr">
<ImageView
android:id="#+id/iv_icon"
android:layout_width="90dp"
android:layout_height="90dp"
android:layout_centerHorizontal="true"
android:layout_centerInParent="true"
android:layout_gravity="center_horizontal"
android:adjustViewBounds="true"
android:background="#drawable/gray_circle"
android:padding="15dp"
android:scaleType="centerCrop"
android:src="#drawable/school" />
<TextView
android:id="#+id/tv_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignEnd="#id/iv_icon"
android:layout_alignLeft="#id/iv_icon"
android:layout_alignRight="#id/iv_icon"
android:layout_alignStart="#id/iv_icon"
android:layout_below="#id/iv_icon"
android:layout_gravity="center_horizontal"
android:gravity="center"
android:text="Your Favourite Place"
android:textColor="#android:color/black" />
</RelativeLayout>
</android.support.v7.widget.CardView>