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Change a textview in a fragment based on the DialogAlert positive/negative buttons in Android Java

I am building a quiz app that has two types of questionnaires. I have a DialogAlert that allows the user to choose which questionnaire (two options: either "history" or "chemistry") they want to complete and have the results display in a fragment.
My goal is to be able to display the textview ("history" or "chemistry") that the questionnaire they selected in the result fragment.
I have a Dialog class:
public class DialogAlert extends DialogFragment {
private Context context;
String selection;
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
final String[] items = {"History", "Chemistry"};
AlertDialog.Builder builder = new AlertDialog.Builder(this.getActivity());
builder.setTitle("Select a topic to complete")
.setSingleChoiceItems(items, -1, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
selection = items[which];
}
})
// Set the action buttons
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
switch (selection)
{
case("History"):
Intent intent_hist = new Intent(getActivity(), historyquestions.class);
startActivity(intent_hist);
break;
case("Chemistry"):
Intent intent_chem = new Intent(getActivity(), chemistryquestions.class);
startActivity(intent_chem);
break;
}
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
Toast.makeText(getActivity(), "No topic was selected", Toast.LENGTH_SHORT)
.show();
dialog.cancel();
}
});
return builder.create();
}
My Result fragment in which I have a placeholder textview that I want to display what the user had selected (either history or chemistry) based on the positive/ negative button above:
public class homeFragment extends Fragment{
TextView topic
public View onCreateView(#NonNull LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
View layoutView = inflater.inflate(R.layout.fragment_home, container, false);
topic = (TextView) layoutView.findViewById(R.id.topic);
return layoutView;
}
}
How should I approach this? The challenge is that the result is shown in one of the fragments and I am unsure how would I "pass" what the user had selected in the Dialog to the Result fragment. Can someone please help?
Thank you in advance!
*Edit with the home fragment Id
<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"
tools:context=".ui.home.homeFragment">
<FrameLayout
android:id="#+id/home_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
</FrameLayout>
<LinearLayout
android:id="#+id/layout1"
android:layout_width="match_parent"
android:layout_height="80dp"
android:layout_marginStart="10dp"
android:layout_marginTop="270dp"
android:layout_marginEnd="10dp"
android:layout_marginBottom="10dp"
android:background="#drawable/layout_bg"
android:orientation="vertical"
android:weightSum="300">
<TextView
android:id="#+id/text1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:layout_weight="10"
android:fontFamily="#font/inter_regular"
android:text="Selection of topic"
android:textColor="#000000"
android:textSize="22sp" />
<TableRow
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/topic"
android:layout_width="340dp"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:fontFamily="#font/inter_regular"
android:text="Topic"
android:textColor="#000000"
android:textSize="20sp" />
</TableRow>
</LinearLayout>
</FrameLayout>
Edit 2023-02-13
HomeViewModel class:
import androidx.lifecycle.LiveData;
import androidx.lifecycle.MutableLiveData;
import androidx.lifecycle.ViewModel;
public class HomeViewModel extends ViewModel {
private final MutableLiveData<String> mText;
public HomeViewModel() {
mText = new MutableLiveData<>();
mText.setValue("This is a home fragment");
}
// getText method
public LiveData<String> getText() {
return mText;
}
// function to update the mText value
public void setText(String updateText) {
mText.setValue(updateText);
}
}
homeFragment class:
import androidx.lifecycle.Observer;
import androidx.lifecycle.ViewModelProviders;
import androidx.annotation.Nullable;
public class homeFragment extends Fragment{
private HomeViewModel homeViewModel;
public View onCreateView(#NonNull LayoutInflater inflater,ViewGroup container, Bundle savedInstanceState) {
View layoutView = inflater.inflate(R.layout.fragment_home, container, false);
homeViewModel =
ViewModelProviders.of(requireActivity()).get(HomeViewModel.class);
final TextView topic = (TextView)layoutView.findViewById(R.id.topic);
homeViewModel.getText().observe(getViewLifecycleOwner(), new Observer<String>() {
#Override
public void onChanged(#Nullable String s) {
topic.setText(s);
}
});
return layoutView;
}
Dialog class:
import androidx.annotation.Nullable;
import androidx.fragment.app.DialogFragment;
import androidx.lifecycle.ViewModelProviders;
import com.example.quizzApp.MainActivity;
import com.example.quizzApp.ui.home.HomeViewModel;
public class DialogAlert extends DialogFragment {
private Context context;
String selection;
private HomeViewModel model;
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
model = ViewModelProviders.of(requireActivity()).get(HomeViewModel.class);
}
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
final String[] items = {"History", "Chemistry"};
AlertDialog.Builder builder = new AlertDialog.Builder(this.getActivity());
// Set the dialog title
builder.setTitle("Select a topic to complete")
// Specify the list array, the items to be selected by default (null for none),
// and the listener through which to receive callbacks when items are selected
.setSingleChoiceItems(items, -1, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
selection = items[which];
}
})
// Set the action buttons
// User clicked OK, so save the selectedItems results somewhere
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
switch (selection)
{
case("History"):
model.setText("History");
Intent intent_hist = new Intent(getActivity(), MainActivity.class);
startActivity(intent_hist);
break;
case("Chemistry"):
model.setText("Chemistry");
Intent intent_chem = new Intent(getActivity(), MainActivity.class);
startActivity(intent_chem);
break;
}
}
})
// or return them to the component that opened the dialog
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
Toast.makeText(getActivity(), "No topic was selected", Toast.LENGTH_SHORT)
.show();
dialog.cancel();
}
});
return builder.create();
}

Scenario
You have created an App with Bottom Navigation Activity template. There should be 3 tabs Home, Dashboard, Notifications. And somehow you have opened a DialogFragment and that allows you to choose between History or Chemistry as the topic. And upon selecting either one and press OK, your Home fragment should display the topic selected.
Possible solution
If you are using Bottom Navigation Activity template, there should be a HomeViewModel class. You can make use of this HomeViewModel class, share it among different Fragments, and update the view accordingly.
HomeFragment class:
public class HomeFragment extends Fragment {
private HomeViewModel homeViewModel;
private Button btnDialog;
public View onCreateView(#NonNull LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
// Please notice the below line, getting ViewModel using the below method can ensure
// the model can be shared across different Fragments
homeViewModel =
ViewModelProviders.of(requireActivity()).get(HomeViewModel.class);
// new ViewModelProvider(this).get(HomeViewModel.class);
View root = inflater.inflate(R.layout.fragment_home, container, false);
final TextView textView = root.findViewById(R.id.text_home);
// You have registered the ViewModel to change your HomeFragment TextView. So if the value
// of mText has been updated, the TextView in HomeFragment will also be updated
// accordingly.
homeViewModel.getText().observe(getViewLifecycleOwner(), new Observer<String>() {
#Override
public void onChanged(#Nullable String s) {
textView.setText(s);
}
});
// This btnDialog is just my testing button, it is a button to open your mentioned
// DialogFragment. So you can ignore this button and the openDialog(View) function.
btnDialog = root.findViewById(R.id.btnDialog);
btnDialog.setOnClickListener(this::openDialog);
return root;
}
// As mentioned above, this function can be ignored
public void openDialog(View v) {
DialogAlert frag = new DialogAlert();
frag.show(getChildFragmentManager(), "DialogAlert");
}
}
HomeViewModel class:
public class HomeViewModel extends ViewModel {
private MutableLiveData<String> mText;
public HomeViewModel() {
mText = new MutableLiveData<>();
mText.setValue("This is home fragment");
}
public LiveData<String> getText() {
return mText;
}
// You need to add a function so that you can update mText value
public void setText(String updateText) {
mText.setValue(updateText);
}
}
DialogAlert class:
public class DialogAlert extends DialogFragment {
private Context context;
String selection;
// Define a variable to hold the ViewModel class
private HomeViewModel model;
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Obtain the HomeViewModel so that we can update the value of mText and sync to view in
// HomeFragment
model = ViewModelProviders.of(requireActivity()).get(HomeViewModel.class);
}
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
final String[] items = {"History", "Chemistry"};
AlertDialog.Builder builder = new AlertDialog.Builder(this.getActivity());
builder.setTitle("Select a topic to complete")
.setSingleChoiceItems(items, -1, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
selection = items[which];
}
})
// Set the action buttons
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
switch (selection) {
case ("History"):
// Magic line, it will trigger the onChanged() in HomeFragment
model.setText("History");
dialog.dismiss();
break;
case ("Chemistry"):
// Magic line, it will trigger the onChanged() in HomeFragment
model.setText("Chemistry");
dialog.dismiss();
break;
}
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int id) {
Toast.makeText(getActivity(), "No topic was selected", Toast.LENGTH_SHORT)
.show();
dialog.cancel();
}
});
return builder.create();
}
}
With the above code, after you have selected the option in DialogFragment, your HomeFragment TextView should be updated at once.
Misconception
Regarding on the following code:
switch (selection)
{
case("History"):
Intent intent_hist = new Intent(getActivity(), historyquestions.class);
startActivity(intent_hist);
break;
case("Chemistry"):
Intent intent_chem = new Intent(getActivity(), chemistryquestions.class);
startActivity(intent_chem);
break;
}
The above code will start an Activity to either historyquestions Activity or chemistryquestions Activity (if you have properly created these Activity), instead of proceeding to your result homeFragment Fragment.
Additional Note
It is a good practice to follow Java naming conventions when you name classes. For example:
homeFragment should be named as HomeFragment
historyquestions should be named as HistoryQuestions

How to call android:onClick on xml button under another xml listview using fragment?

I tried this method and inflate home.xml in my HomeFragment.java:
public View onCreateView(#NonNull LayoutInflater inflater,ViewGroup container, Bundle savedInstanceState) {
root = inflater.inflate(R.layout.home, container, false);
return root;
}
public void OnClickOnTransit(View v){
final Button n = (Button) v;
final String id = n.getTag().toString();
AlertDialog.Builder builderSingle = new AlertDialog.Builder(getContext());
final ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(getContext(), android.R.layout.simple_list_item_1);
arrayAdapter.add("Tag as On Transit");
arrayAdapter.add("Cancel");
builderSingle.setAdapter(arrayAdapter, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
String strOption = arrayAdapter.getItem(which);
if(strOption.equalsIgnoreCase("Tag as On Transit"))
{
Tag_as_on_transit(id);
}
else if(strOption.equalsIgnoreCase("Cancel"))
{
//confirmViewLeveling(emp_tag[1],emp_name.getText().toString());
}
else
{
}
}
});
builderSingle.show();
}
Here is my home.xml where i put my listview.
<ListView
android:id="#+id/lv_customer"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
And this is my nested_listview.xml where my button was placed.
<Button
android:id="#+id/btn_ontransit"
android:layout_width="40dip"
android:layout_height="40dip"
android:background = "#drawable/ic_local_shipping_orange_24dp"
android:textColor="#ff4500"
android:textStyle="bold"
android:text=""
android:textSize="25sp"
android:onClick="OnClickOnTransit"/>
What i want is to call OnClickOnTransit from nested_listview.xml. Thanks in advance!

In that case your parentActivity must have this method
public void OnClickOnTransit(View v){
}
However if you don't want that, You can implement like this in your fragment's onViewcreated method.
Button btn_conferma = (Button) view.findViewById(R.id.btn_conferma);
btn_conferma.setOnClickListener(new OnClickListener()
{
#Override
public void onClick(View v)
{
// do something
}
});

Display words in a recyclerview from a second activity

I am trying to display a word from a second activity to my main activity which is inform of a recycler view with a textview item.
I have created my adapter and I am assuming it works fine the only problem is once I launch my floating button to access my display word activities it does not display on the main activity, what am I doing wrong, I am new to Android.
My Adapter :
public class RoomAdapter extends RecyclerView.Adapter<RoomAdapter.RoomViewHolder> {
private List <RoomPojo> word;
public RoomAdapter(List <RoomPojo> word1){
this.word = word1;
}
#NonNull
#Override
public RoomViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View layoutInflater = LayoutInflater.from(parent.getContext()).inflate(R.layout.word_item,parent,false);
return new RoomViewHolder(layoutInflater);
}
#Override
public void onBindViewHolder(#NonNull RoomViewHolder holder, int position) {
holder.wordTextView.setText(word.get(position).getWord());
}
#Override
public int getItemCount() {
return word.size();
}
public class RoomViewHolder extends RecyclerView.ViewHolder{
private TextView wordTextView;
public RoomViewHolder(View itemView) {
super(itemView);
wordTextView = itemView.findViewById(R.id.display_word);
}
}
}
Here is my Main activity:
public class MainActivity extends AppCompatActivity {
private RoomAdapter roomAdapter;
public static final int NEW_WORD_ACTIVITY_REQUEST_CODE = 1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RecyclerView recyclerView = findViewById(R.id.rv_word);
recyclerView.setAdapter(roomAdapter);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(linearLayoutManager);
FloatingActionButton floatingActionButton = findViewById(R.id.fab);
floatingActionButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(getApplicationContext(), DisplayWord.class);
String word = getIntent().getStringExtra(DisplayWord.EXTRA_KEY);
startActivityForResult(intent,NEW_WORD_ACTIVITY_REQUEST_CODE);
}
});
}
}
Here is my display word which has a button and a edit text which should take just one string.
public class DisplayWord extends AppCompatActivity {
public static final String EXTRA_KEY = "key";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_display_word);
final EditText editText = findViewById(R.id.word_edit_text);
Button button = findViewById(R.id.word_button);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent replyIntent = new Intent();
if(TextUtils.isEmpty(editText.getText())){
setResult(RESULT_CANCELED, replyIntent);
}else {
String word = editText.getText().toString();
replyIntent.putExtra(EXTRA_KEY,word);
}
finish();
}
});
}
}
Main.xml
<?xml version="1.0" encoding="utf-8"?>
<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=".MainActivity">
<android.support.v7.widget.RecyclerView
android:id="#+id/rv_word"
android:layout_width="368dp"
android:layout_height="433dp"
android:layout_marginLeft="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_marginLeft="328dp"
android:layout_marginStart="328dp"
android:layout_marginTop="12dp"
android:src="#drawable/ic_add_black_24dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/rv_word" />
</android.support.constraint.ConstraintLayout>

Your code should be like this :
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent replyIntent = new Intent();
if(TextUtils.isEmpty(editText.getText())){
setResult(RESULT_CANCELED, replyIntent);
}else {
String word = editText.getText().toString();
replyIntent.putExtra(EXTRA_KEY,word);
setResult(RESULT_OK, replyIntent); //missing
}
finish();
}
});
Then After handle it in MainActivity.java
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
try {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_CODE && resultCode == RESULT_OK) {
String requiredValue = data.getStringExtra(DisplayWord.EXTRA_KEY);
}
} catch (Exception ex) {
Toast.makeText(Activity.this, ex.toString(),
Toast.LENGTH_SHORT).show();
}
}

Create a general class for custom Dialog in java Android

My app shows many custom dialog like Yes/No or Accept/Cancel decissions and, while I was coding, I realized that there are so much code repeated, following the same schema.
I want to build a general class but I don't know how to do it or, more exactly, the correct way that I have to do it(interfaces, abstract classes, inheritance, static classes, ...)
This is my current class:
public class DialogTwoOptions extends Dialog {
TextView title_tv;
// Button yes_btn, no_btn;
public DialogTwoOptions(Context context)
{
super(context);
setContentView(R.layout.dialogo_sino); // a simple layout with a TextView and Two Buttons
title_tv = (TextView) findViewById(R.id.dialogo_titulo_sino);
// yes_btn = (Button) findViewById(R.id.dialogo_aceptar);
// no_btn = (Button) findViewById(R.id.dialogo_cancelar);
View v = getWindow().getDecorView();
v.setBackgroundResource(android.R.color.transparent);
}
public void quitDialog(View v) {
if (isShowing()) dismiss();
}
public void setTitle(String title) {
title_tv.setText(title);
}
}
And this is what I am doing when I need to use this class:
final DialogTwoOptions dialog = new DialogTwoOptions(this);
Button yes = (Button) dialog.findViewById(R.id.dialog_yes_btn);
Button no = (Button) dialog.findViewById(R.id.dialog_no_btn);
yes.setOnClickListener(new Button.OnClickListener()
{
public void onClick(View v) {
dialog.dismiss();
// Do something
}
});
no.setOnClickListener(new Button.OnClickListener()
{
public void onClick(View v) {
dialog.dismiss();
// Do something
}
});
dialog.show();
I am sure that it is improvable, but how could you do this?
Thanks

First create an Base DialogFragment to keep hold of the instance of the Activity. So when the Dialog is attached to the Activity , you will know the instance of the Activity which created it.
public abstract class BaseDialogFragment<T> extends DialogFragment {
private T mActivityInstance;
public final T getActivityInstance() {
return mActivityInstance;
}
#Override
public void onAttach(Activity activity) {
mActivityInstance = (T) activity;
super.onAttach(activity);
}
#Override
public void onDetach() {
super.onDetach();
mActivityInstance = null;
}
}
Then, create a GeneralDialogFragment which extends the BaseDialogFragment
public class GeneralDialogFragment extends BaseDialogFragment<GeneralDialogFragment.OnDialogFragmentClickListener> {
// interface to handle the dialog click back to the Activity
public interface OnDialogFragmentClickListener {
public void onOkClicked(GeneralDialogFragment dialog);
public void onCancelClicked(GeneralDialogFragment dialog);
}
// Create an instance of the Dialog with the input
public static GeneralDialogFragment newInstance(String title, String message) {
GeneralDialogFragment frag = new GeneralDialogFragment();
Bundle args = new Bundle();
args.putString("title", title);
args.putString("msg", message);
frag.setArguments(args);
return frag;
}
// Create a Dialog using default AlertDialog builder , if not inflate custom view in onCreateView
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
return new AlertDialog.Builder(getActivity())
.setTitle(getArguments().getString("title"))
.setMessage(getArguments().getString("message"))
.setCancelable(false)
.setPositiveButton("OK",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
// Positive button clicked
getActivityInstance().onOkClicked(GeneralDialogFragment.this);
}
}
)
.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
// negative button clicked
getActivityInstance().onCancelClicked(GeneralDialogFragment.this);
}
}
)
.create();
}
}
If you need to use your own custom layout for dialog,then inflate a layout in onCreateView and remove onCreateDialog . But Add the click listeners in onCreateView like i explained in onCreateDialog
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.activity_dialog, container, false);
return view;
}
Then , In your Activity need to implement an interface to handle the action in dialog
public class TryMeActivity extends
FragmentActivity implements GeneralDialogFragment.OnDialogFragmentClickListener {
#Override
public void onOkClicked(GeneralDialogFragment dialog) {
// do your stuff
}
#Override
public void onCancelClicked(GeneralDialogFragment dialog) {
// do your stuff
}
}
Finally, Show the Dialog from your Activity when required, like this
GeneralDialogFragment generalDialogFragment =
GeneralDialogFragment.newInstance("title", "message");
generalDialogFragment.show(getSupportFragmentManager(),"dialog");
Hope this helps. I am sure this approach is one of the optimized way, but there could be also different approaches .

I faced a problem like you. And all in stackoverflow does not meet what I want. So I create my own Dialog Class and it can use like AlertDialog.Builder class.
In my dialogxml.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="wrap_content"
android:orientation="vertical"
android:background="#drawable/drconner">
<LinearLayout
android:id="#+id/under"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/malertTitle"
android:layout_width="match_parent"
android:layout_height="50dp"
android:padding="5dp"
android:textSize="25sp"
android:textColor="#ffffff"
android:drawablePadding="2dp"
android:background="#color/colorPrimaryDark"
/>
<TextView
android:id="#+id/aleartMessage"
android:layout_width="match_parent"
android:layout_height="75dp"
android:padding="5dp"
android:textSize="18sp"
android:textColor="#color/colorAccent"/>
</LinearLayout>
<LinearLayout
android:layout_below="#+id/under"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="1dp"
android:orientation="horizontal">
<Button
android:id="#+id/aleartYes"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<Button
android:id="#+id/aleartNo"
android:layout_marginLeft="30dp"
android:layout_marginStart="30dp"
android:layout_marginRight="3dp"
android:layout_marginEnd="3dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</RelativeLayout>
For Dialog Shape I create just simple shape xml - drconner.xml
<?xml version="1.0" encoding="utf-8"?>
<shape android:shape="rectangle" xmlns:android="http://schemas.android.com/apk/res/android">
<corners android:radius="5dp"/>
<stroke android:color="#color/colorPrimaryDark" android:width="2dp"/>
</shape>
For custom Alert I create Alear.java as follow
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.TextView;
/**
* Created by sanyatihan on 27-Dec-16.
*/
public class Alert extends Dialog {
private String message;
private String title;
private String btYesText;
private String btNoText;
private int icon=0;
private View.OnClickListener btYesListener=null;
private View.OnClickListener btNoListener=null;
public Alert(Context context) {
super(context);
}
public Alert(Context context, int themeResId) {
super(context, themeResId);
}
protected Alert(Context context, boolean cancelable, OnCancelListener cancelListener) {
super(context, cancelable, cancelListener);
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.dialogxml);
TextView tv = (TextView) findViewById(R.id.malertTitle);
tv.setCompoundDrawablesWithIntrinsicBounds(icon,0,0,0);
tv.setText(getTitle());
TextView tvmessage = (TextView) findViewById(R.id.aleartMessage);
tvmessage.setText(getMessage());
Button btYes = (Button) findViewById(R.id.aleartYes);
Button btNo = (Button) findViewById(R.id.aleartNo);
btYes.setText(btYesText);
btNo.setText(btNoText);
btYes.setOnClickListener(btYesListener);
btNo.setOnClickListener(btNoListener);
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public void setIcon(int icon) {
this.icon = icon;
}
public int getIcon() {
return icon;
}
public void setPositveButton(String yes, View.OnClickListener onClickListener) {
dismiss();
this.btYesText = yes;
this.btYesListener = onClickListener;
}
public void setNegativeButton(String no, View.OnClickListener onClickListener) {
dismiss();
this.btNoText = no;
this.btNoListener = onClickListener;
}
}
To use this Alert class, just simple as the use of AlertDialog.Builder class
for example :
final Alert mAlert = new Alert(this);
mAlert.setTitle("This is Error Warning");
mAlert.setIcon(android.R.drawable.ic_dialog_alert);
mAlert.setMessage("Do you want to delete?");
mAlert.setPositveButton("Yes", new View.OnClickListener() {
#Override
public void onClick(View view) {
mAlert.dismiss();
//Do want you want
}
});
mAlert.setNegativeButton("No", new View.OnClickListener() {
#Override
public void onClick(View view) {
mAlert.dismiss();
//Do want you want
}
});
mAlert.show();
The main thing is you should call dismiss() function in your onClick. I hope this may help to you. And let me know if this is what you want or not. You can change the layout as you want in dialogxml.xml.

I have been using this for some time.
Calling the alert dialog inside an activity, where alertDialog is a static function in a class called Misc:
Misc.alertDlg(this, "Confirm", "Delete the file?", "Yes", null, "Cancel",
(DialogInterface dialog, int which) -> {
if(which == Misc.BTN_POS)
deleteYourFile()
});
}
And the alert dialog function (a static function in a class called Misc:
static public void alertDlg(Context context, String title, String msg, String btnPos, String btnNeutral, String btnNeg, DialogInterface.OnClickListener ocListener) {
Builder db = new AlertDialog.Builder(context);
db.setTitle(title);
db.setMessage(msg);
if (btnPos != null) db.setPositiveButton(btnPos, ocListener);
if (btnNeutral != null) db.setNeutralButton(btnNeutral, ocListener);
if (btnNeg != null) db.setNegativeButton(btnNeg, ocListener);
db.setIcon(android.R.drawable.ic_dialog_alert);
db.show();
}
But I have just recently converted it to kotlin.
Calling the alert dialog (in Kotlin):
Misc.alertDlg(this, "Confirm", "Delete the file?", "Yes", null, "Cancel"){
which-> if(which == Misc.BTN_POS) deleteYourFile()
}
And the alert dialog function (a function in an object called Misc):
fun alertDlg(context: Context, title: String, msg: String, btnNeg: String?, btnNeutral: String?, btnPos: String?,
onClickCallback: (which: Int) -> Unit) {
val ocListener = DialogInterface.OnClickListener() {dialog, which ->
onClickCallback(which)
}
val db = AlertDialog.Builder(context)
db.setTitle(title)
db.setMessage(msg)
if (btnPos != null) db.setPositiveButton(btnPos, ocListener)
if (btnNeutral != null) db.setNeutralButton(btnNeutral, ocListener)
if (btnNeg != null) db.setNegativeButton(btnNeg, ocListener)
db.setIcon(android.R.drawable.ic_dialog_alert)
db.show()
}
I have also been using a similar method to show a text input dialog.

You can use AlertDialog and AlertDialog.Builder.
new AlertDialog.Builder(context)
.setTitle("some_title")
.setMessge("some_message")
.setNegativeButton("No", null)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
#Override
public void onClick(int which) {
// do some action
}
})
.show();

try below code:
calling way
new CustomDialog().makeDialog(Activity.this,"pass value from diffrent-2 ");
class CustomDialog
public class CustomDialog
{
public void makeDialog(Context con, String value)
{
final DialogTwoOptions dialog = new DialogTwoOptions(con);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setContentView(R.layout.ur_xml);
dialog.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));
// set the custom dialog components - text, image
// and button
dialog.setCanceledOnTouchOutside(false);
Button yes = (Button) dialog.findViewById(R.id.dialog_yes_btn);
Button no = (Button) dialog.findViewById(R.id.dialog_no_btn);
yes.setOnClickListener(new Button.OnClickListener()
{
public void onClick(View v)
{
dialog.dismiss();
// Do something
if (value.equals("1"))
{
}
else if (value.equals("1"))
{
}
// do more condition
}
});
no.setOnClickListener(new Button.OnClickListener()
{
public void onClick(View v)
{
dialog.dismiss();
// Do something
if (value.equals("1"))
{
}
else if (value.equals("1"))
{
}
// do more condition
}
});
dialog.show();
}
}

package com.example.jojo.gridview;
import android.app.Dialog;
import android.content.Context;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.Window;
import android.widget.ImageView;
import android.widget.TextView;
public class DialogClass extends Dialog {
Bitmap b;
String n;
public DialogClass(Context context,Bitmap img,String name) {
super(context);
b=img;
n=name;
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.dialog_style);
ImageView image= (ImageView) findViewById(R.id.imageView2);
TextView text= (TextView) findViewById(R.id.textView2);
image.setImageBitmap(b);
text.setText(n);
}
}

How to call main activity's function from custom ArrayAdapter?

I've looked at a lot of similar questions and can't seem to get anything to work. I have a main class with a function like this that edits shows a dialog box then edits a List when a button is pressed.
public class EditPlayers extends SherlockFragmentActivity {
listPlayerNames.setAdapter(new EditPlayerAdapter(ctx,
R.layout.score_row_edit_player, listScoreEdit));
public void deletePlayer(final int position) {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(
EditPlayers.this);
// Setting Dialog Title
alertDialog.setTitle("Delete Player");
// Setting Dialog Message
alertDialog.setMessage("Are you sure?");
// Setting Delete Button
alertDialog.setPositiveButton("Delete",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
listScoreEdit.remove(position);
updateListView();
}
});
// Setting Cancel Button
alertDialog.setNeutralButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
// Showing Alert Message
alertDialog.show();
}
}
How do I access that function from the getView() in the adapter? Here's the XML for the row
<TextView
android:id="#+id/nameEdit"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:paddingBottom="10dp"
android:paddingTop="10dp"
android:paddingLeft="10dp"
android:layout_weight="70"
android:text="Name"
android:textColor="#666666"
android:textSize="22sp"
android:textStyle="bold" >
</TextView>
<Button
android:id="#+id/deletePlayer"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="30"
android:text="Delete"
android:focusable="false" />
Here's the getView()
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
convertView = (LinearLayout) inflater.inflate(resource, null);
Score score = getItem(position);
TextView txtName = (TextView) convertView.findViewById(R.id.nameEdit);
txtName.setText(score.getName());
Button b = (Button)convertView.findViewById(R.id.deletePlayer);
b.setTag(position);
b.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
//call function here
}
});
return convertView;
}
I'm totally lost at this point so any help would be appreciated. Thanks!

I would recommend providing an interface back to your activity that lets it know when that button is pressed. I would not recommend calling an activity's method from an ArrayAdapter. It is too tightly coupled.
Try something like this:
Your Activity
public class EditPlayers extends SherlockFragmentActivity implements EditPlayerAdapterCallback {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
EditPlayerAdapter adapter = new EditPlayerAdapter(this,
R.layout.score_row_edit_player, listScoreEdit);
adapter.setCallback(this);
listPlayerNames.setAdapter(adapter);
}
private void deletePlayer(final int position) {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(
EditPlayers.this);
// Setting Dialog Title
alertDialog.setTitle("Delete Player");
// Setting Dialog Message
alertDialog.setMessage("Are you sure?");
// Setting Delete Button
alertDialog.setPositiveButton("Delete",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
listScoreEdit.remove(position);
updateListView();
}
});
// Setting Cancel Button
alertDialog.setNeutralButton("Cancel",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
// Showing Alert Message
alertDialog.show();
}
#Override
public void deletePressed(int position) {
deletePlayer(position);
}
}
Adapter:
public class EditPlayerAdapter extends ArrayAdapter {
private EditPlayerAdapterCallback callback;
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
convertView = (LinearLayout) inflater.inflate(resource, null);
Score score = getItem(position);
TextView txtName = (TextView) convertView.findViewById(R.id.nameEdit);
txtName.setText(score.getName());
Button b = (Button)convertView.findViewById(R.id.deletePlayer);
b.setTag(position);
b.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if(callback != null) {
callback.deletePressed(position);
}
}
});
return convertView;
}
public void setCallback(EditPlayerAdapterCallback callback){
this.callback = callback;
}
public interface EditPlayerAdapterCallback {
public void deletePressed(int position);
}
}

Your EditPlayerAdapter gets a Context passed to it. Activity extends Context
If the Context passed is your EditPlayers and you store a class-scoped reference to that Context in your Adapter, you can then do:
((EditPlayers) yourContextVar).function();
Better yet, make an interface of some sort. It will help clarify and organise your code and it applies the same principle.