I want to access from this fragment a view from another layout which is not part of the fragment. That is why i get NullPointerException.
How can i solve this?
Fragment code
public class Pacijenti_fragment extends Fragment {
//this is the JSON Data URL
public final static String MESSAGE_KEY= "com.example.android.app";
//a list to store all the products
List<Pacijent> pacijentList;
String id="";
String ID="";
//the recyclerview
RecyclerView recyclerView;
private SearchView searchView;
private PacijentiAdapter adapter;
Button btnPogled;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
final View view=inflater.inflate(R.layout.pacijenti_fragment, container, false);
//getting the recyclerview from xml
recyclerView = (RecyclerView)view.findViewById(R.id.recylcerView);
recyclerView.setHasFixedSize(true);
recyclerView.addItemDecoration(new MyDividerItemDecoration(getActivity(), DividerItemDecoration.VERTICAL, 36));
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
//initializing the productlist
pacijentList = new ArrayList<>();
btnPogled=(Button)findViewById(R.id.btnDodaj); //here i make my button
Bundle b=getArguments();
this.id=b.getString("id");
System.out.println(id);
ID = this.id;
btnPogled.setOnClickListener(new View.OnClickListener(){ //here i get null pointer
#Override
public void onClick(View v) {
OnPogled();
}
});
//this method will fetch and parse json
//to display it in recyclerview
loadPacijenti();
return view;
}
This is another xml where I located my button
<?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">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="8dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:id="#+id/GornjiLayout"
>
<TextView
android:id="#+id/textViewName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:text="Jane"
android:textAppearance="#style/Base.TextAppearance.AppCompat.Small"
android:textColor="#000000" />
<TextView
android:id="#+id/textViewSurname"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:layout_toRightOf="#id/textViewName"
android:text="Doe"
android:textAppearance="#style/Base.TextAppearance.AppCompat.Small"
android:textColor="#000000"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:id="#+id/SredjiLayout"
android:layout_below="#id/GornjiLayout"
>
<TextView
android:id="#+id/textViewDateOfBirth"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/textViewName"
android:layout_marginLeft="5dp"
android:layout_marginRight="150dp"
android:layout_marginTop="5dp"
android:text="21.05.1989"
android:textAppearance="#style/Base.TextAppearance.AppCompat.Small"
android:textStyle="bold" />
<Button
android:id="#+id/buttonDodaj"
android:layout_width="120dp"
android:layout_height="wrap_content"
android:text="Otvori" />
</LinearLayout>
<TextView
android:id="#+id/textViewAdress"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/SredjiLayout"
android:layout_marginLeft="5dp"
android:layout_marginTop="5dp"
android:text="Some street 45, UnknownVille"
android:textAppearance="#style/Base.TextAppearance.AppCompat.Small"
android:textStyle="bold" />
</RelativeLayout>
</LinearLayout>
I don't know how to access other xml from fragment. And this xml is separate file because it goes inside recyclerview with specific adapter that i wrote. and this button needs to be inside that recycler view because every button should pass id of every person from db.
Okay i got your point so basically what you're trying to do is access a button from another xml in your recycler view for that simply refer this code and do all changes in your adapter class here inside your oncreate view holder specify the xml file from which you'll be accessing the button:
public class ManagerTaskListAdapter extends RecyclerView.Adapter<ManagerTaskListAdapter.ProjectViewHolder> {
private ArrayList<Taskmsg> dataList;
private ArrayList<Project> projects;
Context mContext;
public ManagerTaskListAdapter(ArrayList<Taskmsg> dataList, Context mContext) {
this.dataList = dataList;
this.mContext=mContext;
}
#Override
public ProjectViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
View view = layoutInflater.inflate(R.layout.man_task_list_item, parent, false);
return new ProjectViewHolder(view);
}
#Override
public void onBindViewHolder(ProjectViewHolder holder, int position) {
String fname=dataList.get(position).getEmpFirstName();
String lname=dataList.get(position).getEmpLastName();
String prdesc=dataList.get(position).getTaskDescription();
String pid= dataList.get(position).getProjectId().toString();
String em=dataList.get(position).getTaskCreatedBy();
String taskid=dataList.get(position).getTaskId().toString();
prdesc = prdesc.replaceAll("\\<.*?\\>", "");
holder.txttname.setText(dataList.get(position).getTaskName());
holder.txttdesc.setText(prdesc);
holder.txttaskcrt.setText(dataList.get(position).getTaskCreatedBy());
holder.txtempname.setText(fname +" "+ lname);
holder.itemView.setOnClickListener(v -> {
Intent in=new Intent(mContext,TaskDetails.class);
in.putExtra("tid",taskid);
in.putExtra("pid",pid);
in.putExtra("email",em);
mContext.startActivity(in);
});
}
#Override
public int getItemCount() {
return dataList.size();
}
class ProjectViewHolder extends RecyclerView.ViewHolder {
TextView txttname,txttdesc,txtempname,txttaskcrt;
ProjectViewHolder(View itemView) {
super(itemView);
txttname = (TextView) itemView.findViewById(R.id.tv_taskname);
txttaskcrt=itemView.findViewById(R.id.tv_taskcreatedby);
txttdesc = (TextView) itemView.findViewById(R.id.tv_taskdescription);
txtempname = (TextView) itemView.findViewById(R.id.tv_empname);
}
}
}
Just change one line of findviewById.
btnPogled=(Button)findViewById(R.id.btnDodaj)
to
btnPogled=(Button)view.findViewById(R.id.btnDodaj)
Related
I have a layout for a listview item.
I added an ImageButton to the layout, as follows:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>
<TextView
android:id="#+id/tvTaskName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Name"
android:textSize="20dp"
android:textColor="#000000"
android:layout_marginTop="5dp"
/>
<TextView
android:id="#+id/tvTaskDescription"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Description"
android:textSize="14sp"
android:textColor="#0E2DF5"
android:layout_marginTop="40dp"
/>
<TextView
android:id="#+id/tvTaskStartTime"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:text="Start time"
android:textSize="14sp"
android:textColor="#44FF00"
android:layout_marginHorizontal="100dp"
android:layout_marginTop="10dp"
/>
<TextView
android:id="#+id/tvTaskDeadLine"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:text="Dead line"
android:textSize="14sp"
android:textColor="#44FF00"
android:layout_marginHorizontal="100dp"
android:layout_marginTop="40dp"
/>
<ImageButton
android:id="#+id/btnTaskDone"
android:layout_width="70dp"
android:layout_height="70dp"
android:layout_marginStart="345dp"
android:background="#drawable/done_button_state_selector"
/>
</FrameLayout>
The problem - when I add the ImageButton - the entire ListView becomes unclickable. I can only click the button.
I need both the ListView and the button to be clickable, because im using them for different purposes.
I tried putting the ImageButton in one FrameLayout, everything else in another FrameLayout, and both of the FrameLayouts in on big FrameLayout. Still nothing
I would be happy to hear any suggestions. Thanks!
I would use a recyclerView instead it allows for more flexibility, you can have your recyclerView in your xml code like so
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recycler"
android:layout_marginTop="5dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/toolbar" />
Then you set it up like so with java code
RecyclerView recycler;
CustomAdapter adapter;
List<CustomModel> models = new ArrayList<>();
private DatabaseReference databaseReference;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_kids_search);
recycler= findViewById(R.id.recycler);
adapter = new CustomAdapter (models);
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(this);
recycler.setLayoutManager(layoutManager);
recycler.setAdapter(searchAdapter);
}
So you create a model class to hold variables for each list item to show then you populate the models ArrayList with those models.
Here is how the the most important customAdapter class should look like
public class CustomAdapter extends RecyclerView.Adapter<CustomAdapter.ViewHolder> {
List<CustomModel> customModels;
Context context;
public CustomAdapter(List<ChildModel> childModels) {
this.childModels = childModels;
}
#NonNull
#Override
public ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.item_child, parent, false);
context = parent.getContext();
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull ViewHolder holder, int position) {
final CustomModel customModel = customModels.get(position);
holder.tvTaskName.setText(customModel.getTaskName());
holder.tvTaskDescription.setText(customModel.getDescreption());
holder.tvTaskStartTime.setText(customModel.getStartTime());
holder.tvTaskDeadLine.setText(customModel.getDeadLine());
holder.itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//Here the list item is clicked
}
});
holder.btnTaskDone.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//Here the imageButton is clicked
}
});
}
#Override
public int getItemCount() {
return childModels.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
TextView tvTaskName;
TextView tvTaskDescription;
TextView tvTaskStartTime;
TextView tvTaskDeadLine;
ImageButton btnTaskDone;
public ViewHolder(#NonNull View itemView) {
super(itemView);
tvTaskName = itemView.findViewById(R.id.tvTaskName);
tvTaskDescription = itemView.findViewById(R.id.tvTaskDescription);
tvTaskStartTime = itemView.findViewById(R.id.tvTaskStartTime);
tvTaskDeadLine = itemView.findViewById(R.id.tvTaskDescription);
btnTaskDone = itemView.findViewById(R.id.btnTaskDone);
}
}
}
Hope this helps
I'm cant get the onclicklistener to work with fragments. I've searched stackoverflow and tried all the tips but i still cant get it to work. So i do my first post here. I've tried adding android:focusable="false", android:clickable="false" and android:descendantFocusability="blocksDescendants" to the layouts with no luck. Ive removed them because they make no difference. I've tried other solutions as well but none of them works. This is my first post so if i posted something wrong let me know and ill redo it, I've borrowed someones customlist just to get a working example.
Here is one of the fragments i want a clickable list in
public class ActivitiesFragment extends Fragment {
ListView list;
String[] maintitle ={
"Aktivitet 1","Aktivitet 2",
"Aktivitet 3","Aktivitet 4",
"Aktivitet 5",
};
String[] subtitle ={
"A","B",
"C","D",
"E",
};
Integer[] imgid={
R.drawable.ic_dashboard_black_24dp,R.drawable.ic_dashboard_black_24dp,
R.drawable.ic_dashboard_black_24dp,R.drawable.ic_dashboard_black_24dp,
R.drawable.ic_dashboard_black_24dp,
};
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_activities, container, false);
MyListAdapter adapter = new MyListAdapter(getActivity(), maintitle, subtitle,imgid);
list = (ListView) rootView.findViewById(R.id.list);
list.setAdapter(adapter);
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
if(position == 0) {
Toast.makeText(getActivity().getApplicationContext(),"One",Toast.LENGTH_SHORT).show();
}
else if(position == 1) {
Toast.makeText(getActivity().getApplicationContext(),"Two",Toast.LENGTH_SHORT).show();
}
else if(position == 2) {
Toast.makeText(getActivity().getApplicationContext(),"Three",Toast.LENGTH_SHORT).show();
}
else if(position == 3) {
Toast.makeText(getActivity().getApplicationContext(),"Four",Toast.LENGTH_SHORT).show();
}
else if(position == 4) {
Toast.makeText(getActivity().getApplicationContext(),"Five",Toast.LENGTH_SHORT).show();
}
}
});
return rootView;
}
}
Here is the Adapter:
public class MyListAdapter extends ArrayAdapter<String> {
private final Activity context;
private final String[] maintitle;
private final String[] subtitle;
private final Integer[] imgid;
public MyListAdapter(Activity context, String[] maintitle,String[] subtitle, Integer[] imgid) {
super(context, R.layout.mylist, maintitle);
// TODO Auto-generated constructor stub
this.context=context;
this.maintitle=maintitle;
this.subtitle=subtitle;
this.imgid=imgid;
}
public View getView(int position,View rowView,ViewGroup parent) {
LayoutInflater inflater = context.getLayoutInflater();
rowView = inflater.inflate(R.layout.mylist, null,true);
TextView titleText = (TextView) rowView.findViewById(R.id.title);
ImageView imageView = (ImageView) rowView.findViewById(R.id.icon);
TextView subtitleText = (TextView) rowView.findViewById(R.id.subtitle);
titleText.setText(maintitle[position]);
imageView.setImageResource(imgid[position]);
subtitleText.setText(subtitle[position]);
return rowView;
}
}
The xml for the fragment:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="#+id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="50dp"/>
</RelativeLayout>
The xml for the list:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<ImageView
android:id="#+id/icon"
android:layout_width="60dp"
android:layout_height="60dp"
android:padding="5dp"/>
<LinearLayout android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Medium Text"
android:textStyle="bold"
android:textAppearance="?android:attr/textAppearanceMedium"
android:layout_marginLeft="10dp"
android:layout_marginTop="5dp"
android:padding="2dp"
android:textColor="#4d4d4d" />
<TextView
android:id="#+id/subtitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView"
android:layout_marginLeft="10dp" />
</LinearLayout>
</LinearLayout>
Here's whole implementation of RecyclerView with item click listener.
Fragment:
public class MyFragment extends Fragment implements ItemClickListener {
RecyclerView rvList;
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_activities, container, false);
}
#Override
public void onViewCreated(#NonNull View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
rvList = view.findViewById(R.id.rvList);
ArrayList<ItemData> list = new ArrayList<>();
list.add(new ItemData("Aktivitet 1","A",R.drawable.ic_dashboard_black_24dp))
list.add(new ItemData("Aktivitet 2","B",R.drawable.ic_dashboard_black_24dp))
list.add(new ItemData("Aktivitet 3","C",R.drawable.ic_dashboard_black_24dp))
list.add(new ItemData("Aktivitet 4","D",R.drawable.ic_dashboard_black_24dp))
list.add(new ItemData("Aktivitet 5","E",R.drawable.ic_dashboard_black_24dp))
RVAdapter adapter = new RVAdapter(this, list);
rvList.setLayoutManager(new LinearLayoutManager(getContext()));
rvList.setAdapter(adapter);
}
#Override
public void onItemClicked(ItemData data, int position) {
// item click will be listened here
Toast.makeText(getContext(), String.valueOf(position), Toast.LENGTH_SHORT).show();
}
}
Fragment Layout: frag.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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.RecyclerView
android:id="#+id/rvList"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
Layout for the list: 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="horizontal">
<ImageView
android:id="#+id/icon"
android:layout_width="60dp"
android:layout_height="60dp"
android:padding="5dp" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginTop="5dp"
android:padding="2dp"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#4d4d4d"
android:textStyle="bold" />
<TextView
android:id="#+id/subtitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:text="TextView" />
</LinearLayout>
</LinearLayout>
RecyclerView ViewHolder:
public class RecyclerVH extends RecyclerView.ViewHolder {
private TextView titleText;
private ImageView imageView;
private TextView subtitleText;
public RecyclerVH(#NonNull View itemView) {
super(itemView);
titleText = itemView.findViewById(R.id.title);
imageView = itemView.findViewById(R.id.icon);
subtitleText = itemView.findViewById(R.id.subtitle);
}
void bind(ItemData data) {
titleText.setText(data.getMainTitle());
imageView.setImageResource(data.getImgId());
subtitleText.setText(data.getSubTitle());
}
}
RecyclerView Adapter:
public class RVAdapter extends RecyclerView.Adapter<RecyclerVH> {
private ArrayList<ItemData> list;
private ItemClickListener listener;
public RVAdapter(ItemClickListener listener, ArrayList<ItemData> list) {
this.list = list;
this.listener = listener;
}
#NonNull
#Override
public RecyclerVH onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
return new RecyclerVH(LayoutInflater.from(parent.getContext()).inflate(R.layout.item, parent, false));
}
#Override
public void onBindViewHolder(#NonNull final RecyclerVH holder, int position) {
holder.bind(list.get(position));
holder.itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
listener.onItemClicked(list.get(holder.getAdapterPosition()),
holder.getAdapterPosition());
}
});
}
#Override
public int getItemCount() {
return list.size();
}
}
interface ItemClickListener {
void onItemClicked(ItemData data, int position);
}
Update 1:
Add these lines to the root tag of item layout:
android:focusable="true"
android:clickable="true"
Like this:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:focusable="true"
android:clickable="true"
android:orientation="horizontal">
...
</LinearLayout>
Time ago I had a similar problem, with an ImageView in my list item. My solution was changing android:focusable to false inside the ImageView block. I never knew why, but it worked fine.
Anyway, I strongly recommend to start using RecyclerView and ViewHolder pattern. https://developer.android.com/guide/topics/ui/layout/recyclerview
It's much more powerful, flexible and a major enhancement over ListView.
I'm trying to adapt a recyclerview to display a list of objects. But actually I have some kind of wierd bug. My object have ID and Name data to display, but in the list, at first, I only can see the Id, and when I scroll down, only the rows going completely out of the screen are completely displayed...
This is my ListPresentActivity.
public class ListPresentActivity extends AppCompatActivity implements ViewInterface {
private static final String EXTRA_PRESENT_ID = "EXTRA_PRESENT_ID";
private static final String EXTRA_PRESENT_NAME = "EXTRA_PRESENT_NAME";
private List<PresentItem> listOfPresent;
private LayoutInflater layoutInflater;
private RecyclerView recyclerView;
private CustomAdapter adapter;
private PresentController presentController;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list_present);
recyclerView = (RecyclerView) findViewById(R.id.rec_list_activity);
recyclerView.setHasFixedSize(true);
layoutInflater = getLayoutInflater();
presentController = new PresentController(this, new FakePresentModel());
}
#Override
public void startDetailActivity(int id, String name, String info, String target, String advice, String price) {
//public void startDetailActivity(int id) {
Intent i = new Intent(this,PresentDetailActivity.class);
i.putExtra(EXTRA_PRESENT_ID, id);
i.putExtra(EXTRA_PRESENT_NAME, name);
startActivity(i);
}
#Override
public void setUpAdapterAndView(List<PresentItem> listOfPresent) {
this.listOfPresent = listOfPresent;
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
adapter = new CustomAdapter();
recyclerView.setAdapter(adapter);
}
private class CustomAdapter extends RecyclerView.Adapter<CustomAdapter.CustomViewHolder>{
#Override
public CustomAdapter.CustomViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = layoutInflater.inflate(R.layout.item_present, parent, false);
return new CustomViewHolder(v);
}
#Override
public void onBindViewHolder(CustomAdapter.CustomViewHolder holder, int position) {
PresentItem currentPresent = listOfPresent.get(position);
holder.id.setText(
Integer.toString(currentPresent.getId())
);
holder.name.setText(
currentPresent.getName()
);
}
#Override
public int getItemCount() {
return listOfPresent.size();
}
class CustomViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
private TextView id;
private TextView name;
private ViewGroup container;
public CustomViewHolder(View itemView){
super(itemView);
this.id = (TextView) itemView.findViewById(R.id.texv_item_id);
this.name = (TextView) itemView.findViewById(R.id.texv_item_name);
this.container = (ViewGroup) itemView.findViewById(R.id.root_list_present);
this.container.setOnClickListener(this);
}
#Override
public void onClick(View v) {
PresentItem presentItem = listOfPresent.get(
this.getAdapterPosition()
);
presentController.onListItemClick(presentItem);
}
}
}
}
The layout item_present.xml
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="88dp"
android:id="#+id/root_list_present"
xmlns:tools="http://schemas.android.com/tools">
<TextView
android:id="#+id/texv_item_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:textSize="48sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="#id" />
<TextView
android:id="#+id/texv_item_name"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="84dp"
android:layout_marginTop="8dp"
android:ellipsize="end"
android:maxLines="1"
android:textSize="20sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="collier" />
</android.support.constraint.ConstraintLayout>
And my list layout
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="net.lubbee.bruh.view.ListPresentActivity">
<android.support.v7.widget.RecyclerView
android:id="#+id/rec_list_activity"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</android.support.constraint.ConstraintLayout>
I have search for a long time now, and the only concording result I have fount seems to be fixed with the recyclerView.setHasFixedSize(true); which is not my case...
Thanks for your time!
PS : If there is some code parts needed missing, just say the word! :]
Just after the first loading.
After one scroll to the bottom and back to the top of the screen
<LinearLayout android:layout_width="match_parent"
android:layout_height="88dp"
android:weightSum="1"
xmlns:android="http://schemas.android.com/apk/res/android">
<TextView
android:layout_gravity="center_vertical"
android:layout_weight="0.2"
android:layout_width="0dp"
android:layout_height="wrap_content" />
<TextView
android:layout_gravity="center_vertical"
android:layout_weight="0.8"
android:layout_width="0dp"
android:layout_height="wrap_content" />
</LinearLayout>
Try this simple LinearLayout it should work
You can also add other properties, but for now try it out
I am not getting any view from the recycler, I did some debug and the constructor of the adapter is called with items on its list, also the method
getItemCount()
but none of the rest seem to be executed.
I´ve been wandering around stack looking for this problem and i found different approaches to a solution, problem is none worked out for me, maybe I am just missing something i can´t see.
I read somewhere that it could be because the recycler view is inside an scroll view, but the solution given did not worked for me
my custom adapter:
public class CircumstancesAdapter extends RecyclerView.Adapter<CircumstancesAdapter.CircumstancesViewHolder> {
List<CatalogRespModel> circumList;
Context mContext;
public CircumstancesAdapter(List<CatalogRespModel> list, Context context) {
this.circumList = list;
this.mContext = context;
}
#Override
public CircumstancesViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(mContext).inflate(R.layout.row_item_circumstances, parent, false);
return new CircumstancesViewHolder(view);
}
#Override
public void onBindViewHolder(CircumstancesViewHolder holder, int position) {
holder.tvCircum.setText(circumList.get(position).get_Descripcion());
}
#Override
public int getItemCount() {
if(circumList != null) return circumList.size();
else return 0;
}
public class CircumstancesViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
RadioButton rbCircum;
TextView tvCircum;
private Context context;
public CircumstancesViewHolder(View itemView) {
super(itemView);
rbCircum = (RadioButton) itemView.findViewById(R.id.rb_circ);
rbCircum.setOnClickListener(this);
tvCircum = (TextView) itemView.findViewById(R.id.tv_circ);
this.context = itemView.getContext();
}
#Override
public void onClick(View v) {
}
}
}
my container layout:
<FrameLayout 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">
<!-- TODO: Update blank fragment layout -->
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="15dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="20dp"
android:paddingLeft="20dp"
android:paddingRight="20dp"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingTop="8dp"
android:id="#+id/text2"
android:text="#string/text_circ"
android:textSize="20sp"
android:textColor="#color/colorPrimaryshadow"/>
<RelativeLayout
android:id="#+id/placa"
android:layout_width="180dp"
android:layout_height="120dp"
android:layout_gravity="center"
android:background="#drawable/placa">
<TextView
android:id="#+id/tv_plate"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical|center_horizontal"
android:layout_centerInParent="true"
android:text="#string/dummy"
android:textSize="40sp"
android:textColor="#android:color/black"/>
</RelativeLayout>
<ImageView
android:id="#+id/iv_indicator"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:clickable="true"
android:src="#drawable/conductora" />
<android.support.v7.widget.RecyclerView
android:id="#+id/rview_circumstances"
android:layout_width="match_parent"
android:background="#fff"
android:orientation="vertical"
android:layout_height="wrap_content"/>
<Button
android:id="#+id/boton_continuar_circustanciasa"
android:layout_marginTop="15dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/continuar"
android:layout_marginBottom="10dp"
android:elevation="30dp"
android:layout_gravity="center"/>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
</FrameLayout>
my row layout:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:background="#fff"
android:paddingTop="2dp"
android:paddingBottom="2dp"
android:layout_height="wrap_content">
<RadioButton
android:id="#+id/rb_circ"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:buttonTint="#color/colorAccentDark"
android:gravity="center_vertical"
android:textSize="14sp" />
<TextView
android:layout_gravity="center_vertical"
android:gravity="center_vertical"
android:id="#+id/tv_circ"
android:textSize="14sp"
android:text="texto de prueba"
android:textColor="#color/colorAccentDark"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
and in my onCreateView inside the fragment:
recyclerView = (RecyclerView) rootView.findViewById(R.id.rview_circumstances);
recyclerView.setNestedScrollingEnabled(false);
recyclerView.setHasFixedSize(true);
if(Catalogs.circumstancesArray.size() > 0){
adapter = new CircumstancesAdapter(Catalogs.circumstancesArray, getContext());
recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
recyclerView.setAdapter(adapter);
}
Note: I checked the List size and is greater than 0
Fragment code as requested:
public class CircumstancesFragment extends Fragment {
Button btnContinue;
TextView tvPlate;
private ImageView ivIndicator;
private static int iNumDevices;
IFragmentListener iFragmentListener;
private RecyclerView recyclerView;
RecyclerView.Adapter adapter;
private final static String TAGMap = CircumstancesFragment.class.getSimpleName();
public static final String TAG = "CircumstancesFragment.java";
public static CircumstancesFragment getInstance(Bundle bundle){
if(bundle != null){
iNumDevices = bundle.getInt("numDevices");
}
return new CircumstancesFragment();
}
#Override
public void onAttach(Context context) {
super.onAttach(context);
if(context != null){
if(context instanceof IFragmentListener){
iFragmentListener = (IFragmentListener) context;
} else
throw new RuntimeException("el contexto no esta implementando la interfaz");
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
final View rootView = inflater.inflate(R.layout.fragment_circustancias_, container, false);
btnContinue = (Button) rootView.findViewById(R.id.boton_continuar_circustanciasa);
tvPlate = (TextView) rootView.findViewById(R.id.tv_plate);
recyclerView = (RecyclerView) rootView.findViewById(R.id.rview_circumstances);
ivIndicator = (ImageView) rootView.findViewById(R.id.iv_indicator);
recyclerView.setNestedScrollingEnabled(false);
recyclerView.setHasFixedSize(true);
if(Catalogs.circumstancesArray.size() > 0){
adapter = new CircumstancesAdapter(Catalogs.circumstancesArray, getContext());
recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
recyclerView.setAdapter(adapter);
adapter.notifyDataSetChanged();
}
btnContinue.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view)
{
try
{
iFragmentListener.notify(null, TAG);
} catch (Exception ex)
{
Log.d("error", ex.getMessage());
}
}
});
setLayout(iNumDevices);
return rootView;
}
private void setLayout(int i){
tvPlate.setText(FdccoreConstants.insuredArray.get(0).get_Placa_Vehiculo());
if(i== FdccoreConstants.ONE_DEVICE){
ivIndicator.setImageResource(R.drawable.conductora);
}else if(i== FdccoreConstants.TWO_DEVICE){
ivIndicator.setImageResource(R.drawable.only_conductor);
}
}
private void resetView(){
}
}
Please provide more code because Your layout and adapter is working fine.
I only changed Your model list to String.
Maybe in place when You checked list size and list.size() > 0 add
adapter.notifyDataSetChanged();
=====
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.rview_circumstances);
recyclerView.setNestedScrollingEnabled(false);
recyclerView.setHasFixedSize(true);
list = new ArrayList<>();
list.add("asd");
list.add("sasf");
list.add("asasfasf");
list.add("asgagsad");
list.add("asgas");
list.add("asagasgd");
list.add("asreyeryd");
list.add("asgsheyd");
CircumstancesAdapter adapter = new CircumstancesAdapter(list, this);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
recyclerView.setAdapter(adapter);
solution: somehow in order to work with the scroll view i must add this line
compile 'com.android.support:recyclerview-v7:25.3.1'
compiling only appcompat-v7 wont work
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>