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Comment mettre à jour les données dans une boîte de dialogue personnalisée

Voici une manière astucieuse de gérer la classe de dialogue personnalisée !

Vous pouvez créer MyDialog class pour contenir la classe Builder afin qu'elle gère les méthodes buttonOnClick et les données textuelles.

my_dialog_layout.xml devrait contenir 4 editTexts (nom, catégorie, quantité, importance) et 3 boutons (mise à jour, annuler, ok), comme indiqué dans votre deuxième image. Je ne posterai pas le code xml car ce n'est pas la partie critique.

Donc dans OnItemClickListener de la listView dans EditActivity , vous pouvez

  1. construire la boîte de dialogue
  2. définir le texte par défaut sur les textes d'édition
  3. définir onClickListener pour les boutons

Classe MyDialog

public class MyDialog extends DialogFragment {

   public static final String SimpleName = MyDialog.class.getSimpleName();
   private EditText name,category, quantity, importance;
   private Button update, positive, negative;
   private Builder builder;

    private static MyDialog instance = new MyDialog();

    public static MyDialog getInstance(){
        return instance;
    }

   @Override
    public void onCreate(Bundle savedInstanceState) {
        this.setCancelable(true);

        if (savedInstanceState != null) {
            if (builder != null) {
                builder = savedInstanceState.getParcelable(Builder.class.getSimpleName());
            }
        }
        setRetainInstance(true);
        super.onCreate(savedInstanceState);
    }

    @NonNull
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        Dialog dialog = super.onCreateDialog(savedInstanceState);
        // make the dialog's default background transparent so that you can customize the window
        dialog.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));
        dialog.getWindow().requestFeature(Window.FEATURE_NO_TITLE);
        return dialog;
    }

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        return inflater.inflate(R.layout.my_dialog_layout, container, false);
    }

    @Override
    public void onViewCreated(View view, @Nullable final Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        initViews(view);
        if (builder != null) {

            if (builder.getTextName() != null) {
                name.setText(builder.getTextName());
            }
            if (builder.getTextCategory() != null) {
                category.setText(builder.getTextCategory());
            }
            if (builder.getTextQuantity() != null) {
                quantity.setText(builder.getTextQuantity());
            }
            if (builder.getTextImportance() != null) {
                importance.setText(builder.getTextImportance());
            }



            update.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    builder.getOnUpdateClicked().OnClick(view, getDialog());
                }
            });

            positive.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                   builder.getOnPositiveClicked().OnClick(view, getDialog());
                }
            });

            negative.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                  builder.getOnNegativeClicked().OnClick(view, getDialog());
                }
            });

        }
    }

    private void initViews(View view) {       
        name = (EditText) view.findViewById(R.id.editText_name);
        category = (EditText) view.findViewById(R.id. editText_category);
        quantity = (EditText) view.findViewById(R.id. editText_quantity);
        importance = (EditText) view.findViewById(R.id.editText_importance);
        update = (Button) view.findViewById(R.id.update);
        positive = (Button) view.findViewById(R.id.positive);
        negative = (Button) view.findViewById(R.id.negative);

    }

    private Dialog show(Activity activity, Builder builder) {             
         this.builder = builder;
         if (!isAdded()){
             show(((AppCompatActivity) activity).getSupportFragmentManager(), SimpleName);
         }
         return getDialog();
     }

    public static class Builder implements Parcelable  {

        private OnPositiveClicked onPositiveClicked;
        private OnNegativeClicked onNegativeClicked;
        private OnUpdateClicked onUpdateClicked;

        private textName;
        private textCategory;
        private textQuantity;
        private textImportance;

        private Context context;

        protected Builder(Parcel in) {
            textName = in.readString();
            textCategory = in.readString();
            textQuantity = in.readString();
            textImportance = in.readString();
        }

        public static final Creator<Builder> CREATOR = new Creator<Builder>() {
            @Override
            public Builder createFromParcel(Parcel in) {
                return new Builder(in);
            }

            @Override
            public Builder[] newArray(int size) {
                return new Builder[size];
            }
        };

        public Context getContext() {
            return context;
        }

        public Builder setActivity(Context context) {
            this.context = context;
            return this;
        }

        public Builder(Context context) {
            this.context = context;
        }

        public Builder setTextName(String textName) {
            this.textName = textName;
            return this;
        }

        public String getTextName() {
            return textName;
        }

        public Builder setTextCategory(String textCategory) {
            this.textCategory = textCategory;
            return this;
        }

        public String getTextCategory() {
            return textCategory;
        }

        public Builder setTextQuantity(String textQuantity) {
            this.textQuantity = textQuantity;
            return this;
        }

        public String getTextQuantity() {
            return textQuantity;
        }

        public Builder setTextImportance(String textImportance) {
            this.textImportance = textImportance;
            return this;
        }

        public String getTextImportance() {
            return textImportance;
        }


        public OnPositiveClicked getOnPositiveClicked() {
            return onPositiveClicked;
        }

        public Builder setOnPositiveClicked(OnPositiveClicked onPositiveClicked) {
            this.onPositiveClicked = onPositiveClicked;
            return this;
        }

        public OnNegativeClicked getOnNegativeClicked() {
            return onNegativeClicked;
        }

        public Builder setOnNegativeClicked(OnNegativeClicked onNegativeClicked) {
            this.onNegativeClicked = onNegativeClicked;
            return this;
        }

        public OnUpdateClicked getOnUpdateClicked() {
            return onUpdateClicked;
        }

        public Builder setOnUpdateClicked(OnUpdateClicked onUpdateClicked) {
            this.onUpdateClicked = onUpdateClicked;
            return this;
        }

        public Builder build() {
            return this;
        }

        public Dialog show() {
            return getInstance().show(((Activity) context), this);
        }

        @Override
        public int describeContents() {
            return 0;
        }

        @Override
        public void writeToParcel(Parcel parcel, int i) {
            parcel.writeString(textName);
            parcel.writeString(textCategory);
            parcel.writeString(textQuantity);
            parcel.writeString(textImportance);
        }

    }

    public interface OnPositiveClicked {
        void OnClick(View view, Dialog dialog);
    }

    public interface OnNegativeClicked {
        void OnClick(View view, Dialog dialog);
    }


}

ModifierActivité

construire et afficher MyDialog dans une liste OnItemClickListner.

listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
            MyDialog.Builder dialog=null;

            // TODO get the strings from database at the position i
            String name = 
            String category = 
            String quantity = 
            String importance = 

            dialog.setTextName(name)
                .setTextCategory(category)
                .setTextQuantity(quantity)
                .setTextImportance(importance)
                .setOnPositiveClicked(new MyDialog.OnPositiveClicked() { 
                             @Override
                            public void OnClick(View view, Dialog dialog) {

                            }
                        })
                .setOnNegativeClicked(new MyDialog.OnNegativeClicked() { 
                            @Override
                            public void OnClick(View view, Dialog dialog) {

                            }
                        })
                .setOnUpdateClicked(new MyDialog.OnUpdateClicked() { 
                            @Override
                            public void OnClick(View view, Dialog dialog) {
                                // TODO update database here
                            }
                        })

                .build();
                dialog.show();
        }
    });

J'espère que cela aide. Faites-moi savoir s'il y a une erreur ou une meilleure façon.