java - 有效载荷显示正确的数据，但 dors 不更新 arraylist
问题描述
因此，我在 recyclerview 中有三个项目，我想检查其中一个字段是否是唯一的，或者在我的情况下它是名称。所有字段都正确显示在屏幕上，但每当我调用 checkValidation 时，即使两个名称不同，它也总是返回 false。我有一个列表，每当我从活动中调用它时，它会显示一些不同的值，而不是它在屏幕上的显示方式。如果有什么不明白的欢迎评论。
亲爱的社区，我在这里真的需要帮助.. 让我知道您真正没有得到的部分..：/ MainActivity.java
public MainActivity extends AppCompatActivity implements someinterface
..
..
@OnClick(R.id.activity_detailed_proceed)
void goToOrderPage() {
if (checkValidation()) {
startActivity(new Intent(MainActivity.this, Destination.class));
} else {
SameNameAlertDialogFragment sameNameAlertDialogFragment = new SameNameAlertDialogFragment();
sameNameAlertDialogFragment.show(getSupportFragmentManager(), "ERROR DIALOG");
}
}
..
..
boolean checkValidation() {
//
ArrayList<PersonFriends> personList = personAdapter.getPersonList();
ArrayList<String> namesList = new ArrayList<>();
for (int i = 0; i < personList.size(); i++) {
namesList.add(personList.get(i).getName());
System.out.println(personList.get(i).getName());
}
boolean corrent = true;
Set<String> set = new HashSet<String>(namesList);
if (set.size() < namesList.size()) {
//duplicates found
Log.d(TAG, "False was called here");
return false;
}
return true;
}
PersonAdapter personAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_detailed_selected_therapy);
ButterKnife.bind(this);
ArrayList<PersonFriends> personList = new ArrayList<>();
personAdapter = new PersonAdapter(this, this);
personRecyclerview.setAdapter(personAdapter);
personRecyclerview.setNestedScrollingEnabled(false);
personRecyclerview.setLayoutManager(new LinearLayoutManager(this));
}
some interface setup to get the name and duration
@Override
public void onPersonDetailClicked(int position, View view) {
if (view.getId() == R.id.person_name) {
adapterPosition = position;
EnterPersonDialogFragment enterPersonDialogFragment = new EnterPersonDialogFragment();
enterPersonDialogFragment.show(getSupportFragmentManager(), "PERSONS SELECTED");
}
if (view.getId() == R.id.delete_person) {
personAdapter.removeItem(position);
// personAdapter.setPersonList(personList);
// personAdapter.notifyItemRemoved(position);
}
if (view.getId() == R.id.person_duration) {
adapterPosition = position;
DurationDialogFragment durationDialogFragment = new DurationDialogFragment();
durationDialogFragment.show(getSupportFragmentManager(), "DURATION SELECTED");
}
}
@Override
public void enteredInName(String name) {
//change the list that is inside the adapter.
personAdapter.getPersonList().get(adapterPosition).setName(name);
personAdapter.notifyItemChanged(adapterPosition, PersonAdapter.PAYLOAD_NAME);
}
@Override
public void durationSelectedIs(String duration) {
personAdapter.getPersonList().get(adapterPosition).setduration(duration);
personAdapter.notifyItemChanged(adapterPosition, PersonAdapter.PAYLOAD_DURATION);
}
PersonAdapter.java
public class PersonAdapter extends RecyclerView.Adapter<PersonAdapter.PersonViewHolder> {
public static final String PAYLOAD_NAME = "PAYLOAD_NAME";
public static final String PAYLOAD_DURATION = "PAYLOAD_DURATION";
public static final String PAYLOAD_DATE = "PAYLOAD_DATE";
public static final String TAG = PersonAdapter.class.getSimpleName();
Context context;
ArrayList<PersonFriends> personList;
onPersonItemClicked onPersonItemClicked;
public PersonAdapter(Context context, onPersonItemClicked personItemClickListener) {
this.context = context;
onPersonItemClicked = personItemClickListener;
}
public void setPersonList(ArrayList<PersonFriends> personList) {
this.personList = personList;
notifyDataSetChanged();
}
public ArrayList<PersonFriends> getPersonList() {
return this.personList;
}
public void removeItem(int position) {
personList.remove(position);
notifyItemRemoved(position);
}
@NonNull
@Override
public PersonAdapter.PersonViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(context);
View view = inflater.inflate(R.layout.item_persons_details, parent, false);
return new PersonViewHolder(view);
}
@Override
public void onBindViewHolder(@NonNull PersonAdapter.PersonViewHolder holder, int position) {
PersonFriends Person = personList.get(position);
holder.personName.setText(Person.getName());
holder.personDate.setText(Person.getDate());
holder.personDuration.setText(Person.getduration());
if (position == 0) {
holder.deleteFab.hide();
}
}
@Override
public void onBindViewHolder(@NonNull PersonViewHolder holder, int position, @NonNull List<Object> payloads) {
if (!payloads.isEmpty()) {
final PersonFriends item = personList.get(position);
for (final Object payload : payloads) {
if (payload.equals(PAYLOAD_NAME)) {
// in this case only name will be updated
holder.personName.setText(item.getName());
} else if (payload.equals(PAYLOAD_DURATION)) {
// only age will be updated
holder.personDuration.setText(item.getduration());
} else if (payload.equals(PAYLOAD_DATE)) {
holder.personDate.setText(item.getDate());
}
}
} else {
// in this case regular onBindViewHolder will be called
super.onBindViewHolder(holder, position, payloads);
}
}
@Override
public int getItemCount() {
return personList.size();
}
public interface onPersonItemClicked {
void onPersonDetailClicked(int position, View view);
}
class PersonViewHolder extends RecyclerView.ViewHolder {
private final View.OnClickListener onClickListener = new View.OnClickListener() {
@Override
public void onClick(View view) {
onPersonItemClicked.onPersonDetailClicked(getAdapterPosition(), view);
}
};
@BindView(R.id.person_name)
TextView personName;
@BindView(R.id.person_date)
TextView personDate;
@BindView(R.id.person_duration)
TextView personDuration;
@BindView(R.id.delete_person)
FloatingActionButton deleteFab;
public PersonViewHolder(@NonNull View itemView) {
super(itemView);
ButterKnife.bind(this, itemView);
personName.setOnClickListener(onClickListener);
personDate.setOnClickListener(onClickListener);
personDuration.setOnClickListener(onClickListener);
deleteFab.setOnClickListener(onClickListener);
}
}
}
item_persons_details.xml
<HorizontalScrollView 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="wrap_content"
android:layout_gravity="center|top"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:orientation="vertical"
android:scrollbars="none">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/person_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="4dp"
android:layout_marginStart="8dp"
android:layout_marginEnd="24dp"
android:background="@drawable/bg_rounded_30"
android:padding="8dp"
android:paddingStart="16dp"
android:paddingEnd="16dp"
android:text="NAME">
</TextView>
<TextView
android:id="@+id/person_duration"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="4dp"
android:background="@drawable/bg_rounded_30"
android:drawableEnd="@drawable/ic_bottom_arrow"
android:drawablePadding="5dp"
android:padding="8dp"
android:text="DURATION">
</TextView>
<TextView
android:id="@+id/person_date"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="4dp"
android:background="@drawable/bg_rounded_30"
android:drawableEnd="@drawable/ic_bottom_arrow"
android:drawablePadding="4dp"
android:padding="8dp"
android:text="MYDATE">
</TextView>
<com.google.android.material.floatingactionbutton.FloatingActionButton
android:id="@+id/delete_person"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end|center"
android:layout_margin="4dp"
android:backgroundTint="@color/colorBackground"
android:foregroundGravity="right"
android:outlineSpotShadowColor="@color/white"
android:src="@drawable/ic_bin"
android:tint="@color/colorBlack"
app:backgroundTint="@color/white"
app:fabCustomSize="30dp"
app:layout_constraintBottom_toBottomOf="@id/material_card_layout"
app:layout_constraintStart_toStartOf="@id/material_card_layout"
app:layout_constraintTop_toBottomOf="@id/material_card_layout"
app:maxImageSize="20dp" />
</LinearLayout>
</HorizontalScrollView>
解决方案
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