Ecco un modo accurato per gestire la classe di dialogo personalizzata!
Puoi creare MyDialog class per contenere la classe Builder in modo che gestisca i metodi buttonOnClick e i dati di testo.
my_dialog_layout.xml dovrebbe contenere 4 editTexts (nome, categoria, quantità, importanza) e 3 pulsanti (aggiorna, annulla, ok), come mostrato nella tua seconda immagine. Non pubblicherò il codice xml poiché non è la parte critica.
Quindi in OnItemClickListener di listView in EditActivity , puoi
- costruisci la finestra di dialogo
- imposta il testo predefinito sui testi di modifica
- imposta onClickListener per i pulsanti
Lezione di 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);
}
}
Modifica attività
crea e mostra MyDialog in una vista elenco 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();
}
});
Spero che sia d'aiuto. Fammi sapere se c'è un errore o un modo migliore.
