Develop Reference

Recyclerview and adapter doesn’t show

https://www.youtube.com/watch?v=M8sKwoVjqU0
i watched this video and i have done evertyhing same with.But there is a problem i guess myadapter class doesn't work because when i click button it comes just white screen as you see on the picture. i couldn't figure out where is the fault when i check the log no problem. but i just wanna take data from firebase to textview. but i can't get any result also at least it must see there just textview which is have text firstname but i can't see on my activity.i might be don't know the true page to will show
---this my myadapter.class----
public class Myadapter extends RecyclerView.Adapter<Myadapter.MyViewHolder> {
Context context;
ArrayList<User> list ;
public Myadapter(Context context, ArrayList<User> list) {
this.context = context;
this.list = list;
}
#NonNull
#Override
public MyViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(context).inflate(R.layout.item,parent,false);
return new MyViewHolder(v) ;
}
#Override
public void onBindViewHolder(#NonNull MyViewHolder holder, int position) {
User user =list.get(position);
holder.textView.setText(user.getTitle());
}
#Override
public int getItemCount() {
return list.size();
}
public static class MyViewHolder extends RecyclerView.ViewHolder{
TextView textView, TextView;
public MyViewHolder(#NonNull View itemView) {
super(itemView);
TextView = itemView.findViewById(R.id.txtview);
textView=itemView.findViewById(R.id.title);
}
}
---this my userlist.class---
public class userlist extends AppCompatActivity {
RecyclerView recyclerView;
DatabaseReference database;
Myadapter myadapter;
ArrayList<User>list;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_userlist);
recyclerView=findViewById(R.id.userlist);
database = FirebaseDatabase.getInstance().getReference("users");
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
list = new ArrayList<>();
myadapter = new Myadapter(this,list);
recyclerView.setAdapter(myadapter);
database.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot snapshot) {
for ( DataSnapshot dataSnapshot: snapshot.getChildren()){
User user=dataSnapshot.getValue(User.class);
list.add(user);
}
myadapter.notifyDataSetChanged();
}
---this my mainactivity.class---
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button1 = (Button) findViewById(R.id.button);
button1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent i = new Intent(MainActivity.this,userlist.class);
startActivity(i);
finish();}
});
}
}
{
"users" : {
"value1" : {
"title" : "reachthis"
}
}
}
<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=".userlist">
---activity_userlist---
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/userlist"
android:layout_width="409dp"
android:layout_height="729dp"
android:layout_marginStart="1dp"
android:layout_marginTop="1dp"
android:layout_marginEnd="1dp"
android:layout_marginBottom="1dp"
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"
app:layout_constraintVertical_bias="0.0" />
</androidx.constraintlayout.widget.ConstraintLayout>```
---item.xml---
<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
xmlns:app="http://schemas.android.com/apk/res-auto"
app:cardElevation="8dp"
>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"> </LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
>
<TextView
android:id="#+id/txtview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="first name"
android:textColor="#color/black"
android:textSize="26sp"
android:textStyle="bold"></TextView><TextView
android:id="#+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="first name"
android:textColor="#color/black"
android:textSize="20sp"
></TextView>
</LinearLayout>
</androidx.cardview.widget.CardView>

How to fix TextView being rendered blank on new Activity

I'm trying to start another activity after clicking on a CardView inside a RecyclerView. The new activity renders after the click on any of the items inside the RecyclerView (It does the transition and changes the title TextView), but it does not show any of the TextView's inside the CardView on the layout.
The OnClick method is being set as an interface and being implemented in the first Activity.
Here is my first activity. I'm loading the data here from a SQLite database, but it's not relevant for the question to show the code from it.
public class MainActivity extends AppCompatActivity implements RecipeAdapterMain.OnCardListener {
private TextView tv;
ArrayList<RecipeObject> recipes = new ArrayList<>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RecyclerView rv = findViewById(R.id.recipeListMain);
LinearLayoutManager llm = new LinearLayoutManager(this);
rv.setLayoutManager(llm);
RecipeAdapterMain adapter = new RecipeAdapterMain(recipes, this);
rv.setAdapter(adapter);
tv = findViewById(R.id.title);
}
#Override
public void onCardClick(int position) {
Intent intent = new Intent(this, RecipeActivity.class);
startActivity(intent);
}
}
This is my Adapter.
public class RecipeAdapterMain extends RecyclerView.Adapter<RecipeAdapterMain.RecipeListViewHolder> {
RecyclerView mRecyclerView;
ArrayList<RecipeObject> recipeList;
private OnCardListener mOnCardListener;
public RecipeAdapterMain(Context context, ArrayList<RecipeObject> recipeList, OnCardListener onCardListener) {
this.mOnCardListener = onCardListener;
this.recipeList = recipeList;
}
#Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
mRecyclerView = recyclerView;
super.onAttachedToRecyclerView(recyclerView);
}
#Override
public RecipeListViewHolder onCreateViewHolder(ViewGroup parent, int i) {
View layoutView = LayoutInflater.from(parent.getContext()).inflate(R.layout.layout_recipe_main, parent, false);
RecipeListViewHolder rcv = new RecipeListViewHolder(layoutView, mOnCardListener);
return rcv;
}
#Override
public void onBindViewHolder(#NonNull RecipeListViewHolder holder, int position) {
holder.mName.setText(recipeList.get(position).getName());
}
#Override
public int getItemCount(){
return recipeList.size();
}
public class RecipeListViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
public TextView mName;
OnCardListener onCardListener;
public RecipeListViewHolder(final View view, OnCardListener onCardListener) {
super(view);
mName = view.findViewById(R.id.textViewTitle);
this.onCardListener = onCardListener;
view.setOnClickListener(this);
}
#Override
public void onClick(View v) {
onCardListener.onCardClick(getAdapterPosition());
}
}
public interface OnCardListener {
void onCardClick(int position);
}
}
My second activity:
public class RecipeActivity extends AppCompatActivity {
#Override
public void onCreate(#Nullable Bundle savedInstanceState, #Nullable PersistableBundle persistentState) {
super.onCreate(savedInstanceState, persistentState);
setContentView(R.layout.layout_recipe);
}
}
This is the layout from the second activity. (layout_recipe):
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="wrap_content">
<androidx.cardview.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/textViewName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="This is a test"
android:textColor="#1A1A1A"
android:textSize="18sp" />
<TextView
android:id="#+id/textViewIngr"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="This is a test"
android:textColor="#1A1A1A"
android:textSize="18sp" />
<TextView
android:id="#+id/textViewDire"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="This is a test"
android:textColor="#1A1A1A"
android:textSize="18sp" />
</LinearLayout>
</androidx.cardview.widget.CardView>
</LinearLayout>
And this is the layout from the first activity (activity_main):
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
</com.google.android.material.appbar.AppBarLayout>
<androidx.recyclerview.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/recipeListMain"
android:scrollbars="vertical">
</androidx.recyclerview.widget.RecyclerView>
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:backgroundTint="#color/colorAccent"
android:layout_gravity="end|bottom"
android:layout_margin="16dp"
android:layout_marginBottom="16dp"
android:contentDescription="#string/submit"
android:src="#drawable/ic_add_black_24dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:onClick="openActivityCreate"/>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
From clicking in a Card on the MainActivity, I expected to render the second activity with it's TextViews (This is a test), but it's rendering a blank page instead.

try removing #Nullable PersistableBundle persistentState from onCreate on your second activity

Widget layout from Activity still appear after fragment add transaction

I have a problem with fragments. I add fragments dynamically without removing old fragments so they can be recalled when I return. But when I applied the following snippet I found that some of the views that came from the activity did not disappear, such as the Button, TextView, and so on. The results I get are overlapping views
MainActivity.Java
public class MainActivity extends AppCompatActivity implements BlankFragment.OnFragmentInteractionListener {
private static final String TAG = "MainActivity";
private Unbinder unbinder;
private FragmentManager fragmentManager;
#BindView(R.id.dynamic_fragment_frame)
FrameLayout frameLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_reading);
unbinder = ButterKnife.bind(this);
fragmentManager = this.getSupportFragmentManager();
}
public void openFragment(View view) {
BlankFragment fragment = BlankFragment.newInstance("Test 1");
FragmentTransaction transaction = fragmentManager.beginTransaction();
transaction.setCustomAnimations(R.anim.enter_from_right, R.anim.exit_to_right, R.anim.enter_from_right, R.anim.exit_to_right);
transaction.addToBackStack(null);
transaction.add(R.id.dynamic_fragment_frame, fragment, "BLACK_FRAGMENT");
transaction.commit();
}
#Override
protected void onDestroy() {
unbinder.unbind();
super.onDestroy();
}
#Override
public void onFragmentInteraction(String text) {
Log.d(TAG, "onFragmentInteraction: " + text);
onBackPressed();
}
}
activity_reading.xml
<RelativeLayout
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:background="#00d9ff"
tools:context=".MainActivity">
<FrameLayout
android:id="#+id/dynamic_fragment_frame"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<TextView
android:id="#+id/title_read_news"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Ini Judul"
android:textAppearance="#style/TextAppearance.AppCompat.Large"
android:layout_gravity="center"
android:paddingBottom="5dp"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:onClick="openFragment"
android:text="Open"
android:stateListAnimator="#null"/>
</RelativeLayout>
BlankFragment.java
public class BlankFragment extends Fragment {
private static final String ARG_TEXT = "TEXT";
private Unbinder unbinder;
private String mParam1;
private OnFragmentInteractionListener mListener;
#BindView(R.id.tv_blank_fragment)
TextView tvTitle;
#BindView(R.id.back_btn)
Button backBtn;
#BindView(R.id.next_btn)
Button nextBtn;
private FragmentManager fragmentManager;
public BlankFragment() {
// Required empty public constructor
}
public static BlankFragment newInstance(String param1) {
BlankFragment fragment = new BlankFragment();
Bundle args = new Bundle();
args.putString(ARG_TEXT, param1);
fragment.setArguments(args);
return fragment;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_TEXT);
}
fragmentManager = getFragmentManager();
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_blank, container, false);
}
#Override
public void onViewCreated(#NonNull View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
unbinder = ButterKnife.bind(this, view);
tvTitle.setText(mParam1);
backBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String test = "test dari fragment";
sendBack(test);
}
});
nextBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
}
});
}
public void sendBack(String sendback) {
if (mListener != null) {
mListener.onFragmentInteraction(sendback);
}
}
#Override
public void onAttach(Context context) {
super.onAttach(context);
if (context instanceof OnFragmentInteractionListener) {
mListener = (OnFragmentInteractionListener) context;
} else {
throw new RuntimeException(context.toString()
+ " must implement OnFragmentInteractionListener");
}
}
#Override
public void onDetach() {
super.onDetach();
mListener = null;
}
public interface OnFragmentInteractionListener {
void onFragmentInteraction(String text);
}
}
fragment_blank.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#cfcf1d"
tools:context=".BlankFragment">
<TextView
android:id="#+id/tv_blank_fragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="#string/hello_blank_fragment" />
<Button
android:id="#+id/next_btn"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="#+id/back_btn"
android:layout_alignParentStart="true"
android:text="Create new Fragment" />
<Button
android:id="#+id/back_btn"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentBottom="true"
android:text="back" />
</RelativeLayout>
Everything went smoothly but the result of my Mainactivity layout still appeared on fragment. Please help me
Result as shows as below:
here 1
here 2

In activity_reading, the fragment container view (dynamic_fragment_frame) is declared first, so the button and the text view will be displayed on top of it. If you move the fragment container to the bottom, the fragments will be displayed correctly, so the layout should look something like this:
<RelativeLayout
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:background="#00d9ff"
tools:context=".MainActivity">
<TextView
android:id="#+id/title_read_news"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Ini Judul"
android:textAppearance="#style/TextAppearance.AppCompat.Large"
android:layout_gravity="center"
android:paddingBottom="5dp"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:onClick="openFragment"
android:text="Open"
android:stateListAnimator="#null"/>
<FrameLayout
android:id="#+id/dynamic_fragment_frame"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</RelativeLayout>

<RelativeLayout
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:background="#00d9ff"
tools:context=".MainActivity">
<FrameLayout
android:id="#+id/dynamic_fragment_frame"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<TextView
android:id="#+id/title_read_news"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Ini Judul"
android:textAppearance="#style/TextAppearance.AppCompat.Large"
android:layout_gravity="center"
android:paddingBottom="5dp"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:onClick="openFragment"
android:text="Open"
android:stateListAnimator="#null"/>
</RelativeLayout>
With the above layout, Imagine that the TextView and Button are over the FragmeLayout. So when you add a Fragment to the FrameLayout, the TextView and Button are still over the FragmeLayout. To hide these views, you should use TextView.setVisibility(View.GONE) and Button.setVisibility(View.GONE) when adding a Fragment

I cant get all the data from firebase to my Listview

I couldnt able to display my data from firebase to my listview in android application. Rather it only shows one data.
Heres the current data of my database:
Database
And this is my java:
public class scheduleList extends ArrayAdapter<Schedule> {
private Activity context;
private List<Schedule> scheduleList;
public scheduleList(Activity context, List<Schedule> scheduleList){
super(context, R.layout.listlayout, scheduleList);
this.context=context;
this.scheduleList=scheduleList;
}
#NonNull
#Override
public View getView(int position, #Nullable View convertView, #NonNull ViewGroup parent) {
LayoutInflater inflater = context.getLayoutInflater();
View listviewItem = inflater.inflate(R.layout.listlayout, null, true);
TextView textViewName = (TextView) listviewItem.findViewById(R.id.textViewName);
TextView textViewSchedule = (TextView) listviewItem.findViewById(R.id.textViewSchedule);
Schedule schedule = scheduleList.get(position);
textViewName.setText(schedule.getAppointer());
textViewSchedule.setText(schedule.getAppointment_schedule());
return listviewItem;
}}
My java file:
public class Appointment extends AppCompatActivity {
CalendarView calendarView;
TextView myDate;
private Button btn1;
ListView listViewSchedule;
List<Schedule> scheduleList;
DatabaseReference databaseAppointments;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_appointment);
databaseAppointments = FirebaseDatabase.getInstance().getReference("appointment");
calendarView = (CalendarView) findViewById(R.id.calendarView);
myDate = (TextView) findViewById(R.id.myDate);
listViewSchedule=(ListView) findViewById(R.id.listViewSchedule);
scheduleList = new ArrayList<>();
btn1 = (Button) findViewById(R.id.appt);
btn1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent myIntent = new Intent(Appointment.this, appointments2.class);
Appointment.this.startActivity(myIntent);
}
});
calendarView.setOnDateChangeListener(new CalendarView.OnDateChangeListener() {
#Override
public void onSelectedDayChange(#NonNull CalendarView view, int i, int i1, int i2) {
String date = (i1 + 1) + "/" + i2 + "/" + i;
myDate.setText(date);
}
});
}
#Override
protected void onStart() {
super.onStart();
databaseAppointments.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
scheduleList.clear();
for(DataSnapshot scheduleSnapshot: dataSnapshot.getChildren()){
Schedule schedule = scheduleSnapshot.getValue(Schedule.class);
scheduleList.add(schedule);
}
scheduleList adapter = new scheduleList(Appointment.this, scheduleList);
listViewSchedule.setAdapter(adapter);
}
#Override
public void onCancelled(DatabaseError databaseError) {
}
});
}}
and lastly my xml file containing the listview:
<ScrollView 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="com.example.cs409.instappoint.Appointment">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/myDate"
android:textSize="23sp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Select the date"
android:textColor="#ee912a"
android:textAlignment="center"
android:layout_marginStart="125dp"
android:layout_marginTop="48dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<LinearLayout
android:layout_marginTop="10dp"
android:layout_width="380dp"
android:layout_marginStart="10dp"
android:layout_gravity="center"
android:layout_height="wrap_content">
<CalendarView
android:id="#+id/calendarView"
android:layout_width="wrap_content"
android:layout_height="320dp">
</CalendarView>
</LinearLayout>
<View
android:layout_width="500dp"
android:layout_height="1dp"
android:layout_gravity="center"
android:layout_marginEnd="30dp"
android:layout_marginStart="30dp"
android:layout_marginTop="0dp"
android:background="#ee912a" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Appointments"
android:layout_gravity="center_horizontal"
android:layout_marginTop="5dp"/>
<ListView
android:id="#+id/listViewSchedule"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<Button
android:id="#+id/appt"
android:layout_width="450dp"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginEnd="120dp"
android:layout_marginStart="120dp"
android:layout_marginTop="130dp"
android:background="#drawable/bg_calen"
android:paddingLeft="20dp"
android:paddingRight="20dp"
android:text="Appoint now"
android:textColor="#fff" />
</LinearLayout>
Im guessing that the scrollview layout affects the listview but im not sure. Also the listview display whatevers the first on the list.

use FirebaseRecyclerAdapter. search example of how to use FirebaseRecylerAdapter with example.

How to use buttons from different xml files in one class

I have a listview with multiple items and one button to start a new activity. I'm getting Null Pointer Exception when I run my app. How and where shoud I set the OnClickListener to run properly?
Also, how can I pass with Intent the arraylist named listaIngrediente?
Here is my code
main_activity.xml
<?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="match_parent"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
tools:context="com.example.radu.fridgecheck.MainActivity"
android:orientation="vertical">
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1">
</ListView>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/find_recipies"
android:id="#+id/find"
android:layout_weight="0"/>
</LinearLayout>
list_item.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="6dip" >
<CheckBox
android:id="#+id/checkBox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:focusable="false"
android:focusableInTouchMode="false"/>
<TextView
android:id="#+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/checkBox"
android:layout_alignBottom="#+id/checkBox"
android:layout_toRightOf="#+id/checkBox"
android:text="TextView" />
</RelativeLayout>
Adapter
public class Adapter extends ArrayAdapter<Ingredient> {
public LayoutInflater inflater;
public ArrayList<Ingredient> listaIngrediente;
ArrayList<String> ingredienteDisponibile;
private Activity activity;
public Adapter(Activity activity, int textResourceId, ArrayList<Ingredient> ingrediente) {
super(activity, textResourceId, ingrediente);
this.activity=activity;
this.listaIngrediente=ingrediente;
try {
inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
} catch (Exception e) {
e.printStackTrace();
}
}
public int getCount() {
return listaIngrediente.size();
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
if (convertView == null) {
v = inflater.inflate(R.layout.list_item, null);
}
final Ingredient ingredients = getItem(position);
final TextView display_ingredients = (TextView) v.findViewById(R.id.name);
display_ingredients.setText(ingredients.getNameI());
final CheckBox checkBox = (CheckBox) v.findViewById(R.id.checkBox);
ListView listView = (ListView) v.findViewById(R.id.listView1);
Button button = (Button) v.findViewById(R.id.button);
listView.addFooterView(button);
Button find = (Button) v.findViewById(R.id.find);
find.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent i = new Intent(getContext(), ShowRecipes.class);
Bundle args = new Bundle(); /// nu reusesc sa transfer obiectele
args.putSerializable("ARRAYLIST",listaIngrediente);
i.putExtra("BUNDLE",args);
activity.startActivity(i);
}
});
v.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if(!ingredients.isSelected()) {
checkBox.setChecked(true);
ingredients.setSelected(true);
}
else{
checkBox.setChecked(false);
ingredients.setSelected(false);
}
}
});
return v;
}
}

You have to write that in MainActivity class, because your button is in main_activity.xml
In MainActivity, write this method
public void showRecipes(View view) {
Intent i = new Intent(getContext(), ShowRecipes.class);
Bundle args = new Bundle(); /// nu reusesc sa transfer obiectele
args.putSerializable("ARRAYLIST",listaIngrediente);
i.putExtra("BUNDLE",args);
startActivity(i);
}
In Xml add onClick
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/find_recipies"
android:id="#+id/find"
android:onClick="showRecipes"
/>`
More Information on click Events
http://developer.android.com/guide/topics/ui/controls/button.html#HandlingEvents