Последний элемент представления переработчика с многовариантностью портится - PullRequest
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Последний элемент представления переработчика с многовариантностью портится

0 голосов
/ 04 июня 2018

Я пытаюсь реализовать приложение чата, в котором представление переработчика имеет несколько макетов просмотра.Но последний элемент каждого чата не на месте, но когда мы прокручиваем вверх и возвращаемся вниз, он возвращается на свое место.Вот мой адаптер: 

     @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int 
       viewType) {

    mAuth = FirebaseAuth.getInstance();
    currentUserId = mAuth.getCurrentUser().getUid();
    View view;
    switch (viewType) {
        case TEXT_TYPE_OTHER:
            view = LayoutInflater.from(parent.getContext()).inflate(R.layout.message_single_layout, parent, false);
            return new TextMessageViewHolder(view);
        case TEXT_TYPE_USER:
            view = LayoutInflater.from(parent.getContext()).inflate(R.layout.message_single_layout_user, parent, false);
            return new TextMessageViewHolderUser(view);
        case IMAGE_TYPE_OTHER:
            view = LayoutInflater.from(parent.getContext()).inflate(R.layout.message_image_single_layout, parent, false);
            return new ImageMessageViewHolder(view);
        case IMAGE_TYPE_USER:
            view = LayoutInflater.from(parent.getContext()).inflate(R.layout.message_image_single_layout_user, parent, false);
            return new ImageMessageViewHolderUser(view);
        case IMAGE_TEXT_TYPE_OTHER:
            view = LayoutInflater.from(parent.getContext()).inflate(R.layout.message_image_single_layout_with_text, parent, false);
            return new ImageMessageWithTextViewHolder(view);
        case IMAGE_TEXT_TYPE_USER:
            view = LayoutInflater.from(parent.getContext()).inflate(R.layout.message_image_single_layout_with_text_user, parent, false);
            return new ImageMessageWithTextViewHolderUser(view);
    }
    return null;
}

public class TextMessageViewHolder extends RecyclerView.ViewHolder {
    private TextView time;
    private TextView messageText;
    //private CardView cardView;
    private TextView textDate;
    private View view;

    public TextMessageViewHolder(View view) {
        super(view);
        messageText = view.findViewById(R.id.message_text_layout);
        time = view.findViewById(R.id.time_text_layout);
        textDate = view.findViewById(R.id.text_chat_date);
        //cardView = itemView.findViewById(R.id.cardView);
        view = itemView.findViewById(R.id.text_message_view);
    }
}


public class TextMessageViewHolderUser extends RecyclerView.ViewHolder {
    private TextView timeUser;
    private TextView messageTextUser;
    private TextView textDateUser;
    //private CardView cardViewUser;
    private View view;

    public TextMessageViewHolderUser(View view) {
        super(view);
        messageTextUser = view.findViewById(R.id.message_text_layout_user);
        timeUser = view.findViewById(R.id.time_text_layout_user);
        textDateUser = view.findViewById(R.id.text_chat_date_user);
        //cardViewUser = itemView.findViewById(R.id.cardViewUser);
        view = itemView.findViewById(R.id.text_message_view_user);

    }
}

public class ImageMessageWithTextViewHolder extends RecyclerView.ViewHolder {
    private ImageView messageImage;
    //private CardView imageMessage;
    private TextView imageText;
    private TextView imageTime;
    private TextView imageTextDate;
    private View view;

    public ImageMessageWithTextViewHolder(View itemView) {
        super(itemView);
        imageText = itemView.findViewById(R.id.imageText_with_text);
        imageTime = itemView.findViewById(R.id.time_text_layout_image_with_text);
        messageImage = itemView.findViewById(R.id.message_image_layout_with_text);
        imageTextDate = itemView.findViewById(R.id.text_image_chat_date);
        view = itemView.findViewById(R.id.text_message_image_view);
        //imageMessage = itemView.findViewById(R.id.imageMessageWithText);
    }
}

public class ImageMessageWithTextViewHolderUser extends RecyclerView.ViewHolder {
    private ImageView messageImageUser;
    //private CardView imageMessageUser;
    private TextView imageTextUser;
    private TextView imageTimeUser;
    private TextView imageTextDateUser;
    private View view;

    public ImageMessageWithTextViewHolderUser(View itemView) {
        super(itemView);
        imageTextUser = itemView.findViewById(R.id.imageText_with_text_user);
        imageTimeUser = itemView.findViewById(R.id.time_text_layout_image_with_text_user);
        messageImageUser = itemView.findViewById(R.id.message_image_layout_with_text_user);
        imageTextDateUser = itemView.findViewById(R.id.text_image_chat_date_user);
        view = itemView.findViewById(R.id.text_message_image_user_view);

        //imageMessageUser = itemView.findViewById(R.id.imageMessageWithTextUser);
    }
}

public class ImageMessageViewHolder extends RecyclerView.ViewHolder {
    private ImageView messageImage;
    //private CardView cardView;
    private TextView imageTime;
    private TextView imageChatDate;
    private View view;

    public ImageMessageViewHolder(View itemView) {
        super(itemView);
        imageTime = itemView.findViewById(R.id.time_text_layout_image);
        //cardView = itemView.findViewById(R.id.imageMessage);
        messageImage = itemView.findViewById(R.id.message_image_layout);
        imageChatDate = itemView.findViewById(R.id.image_chat_date);
        view = itemView.findViewById(R.id.message_image_view);

    }
}

public class ImageMessageViewHolderUser extends RecyclerView.ViewHolder {
    private ImageView messageImageUser;
    //private CardView cardViewUser;
    private TextView imageTimeUser;
    private TextView imageChatDateUser;
    private View view;

    public ImageMessageViewHolderUser(View itemView) {
        super(itemView);
        imageTimeUser = itemView.findViewById(R.id.time_text_layout_image_user);
        //cardViewUser = itemView.findViewById(R.id.imageMessageUser);
        messageImageUser = itemView.findViewById(R.id.message_image_layout_user);
        imageChatDateUser = itemView.findViewById(R.id.image_chat_date_user);
        view = itemView.findViewById(R.id.message_image_view_user);

    }
}

        public int getItemViewType(int position) {
        switch (mMessageList.get(position).getType()){
        case 0:
            if (mMessageList.get(position).getFrom().equals(currentUserId))
                return TEXT_TYPE_USER;
            else
                return TEXT_TYPE_OTHER;
        case 1:
            if (mMessageList.get(position).getFrom().equals(currentUserId))
                return IMAGE_TYPE_USER;
            else
                return IMAGE_TYPE_OTHER;
        case 2:
            if (mMessageList.get(position).getFrom().equals(currentUserId))
                return IMAGE_TEXT_TYPE_USER;
            else
                return IMAGE_TEXT_TYPE_OTHER;
        default:
            return 1234567890;
    }
}


public void onBindViewHolder(final RecyclerView.ViewHolder holder, int listPosition) {

    final Messages object = mMessageList.get(holder.getAdapterPosition());
    final String fromUser = object.getFrom();
    final String lastSeenTime = DateFormat.format("HH:mm", new Date(object.getTime())).toString();
    RequestBuilder<Drawable> thumbnailRequestBlogImage;
    thumbnailRequestBlogImage =glide.load(object.getThumb());

        switch (holder.getItemViewType()) {
            case TEXT_TYPE_USER:
                    ((TextMessageViewHolderUser) holder).messageTextUser.setText(object.getMessage());
                    ((TextMessageViewHolderUser) holder).timeUser.setText(lastSeenTime);
                break;
            case TEXT_TYPE_OTHER:
                    ((TextMessageViewHolder) holder).messageText.setText(object.getMessage());
                    ((TextMessageViewHolder) holder).time.setText(lastSeenTime);
                break;
            case IMAGE_TYPE_USER:
                    ((ImageMessageViewHolderUser) holder).imageTimeUser.setText(lastSeenTime);
                   glide.load(object.getImage())
                            .apply(new RequestOptions().dontAnimate().dontTransform())
                            .thumbnail(thumbnailRequestBlogImage)
                            .listener(new RequestListener<Drawable>() {
                                @Override
                                public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Drawable> target, boolean isFirstResource) {
                                    return false;
                                }

                                @Override
                                public boolean onResourceReady(Drawable resource, Object model, Target<Drawable> target, DataSource dataSource, boolean isFirstResource) {
                                    return false;
                                }
                            })
                            .into(((ImageMessageViewHolderUser) holder).messageImageUser);
                break;
            case IMAGE_TYPE_OTHER:

                    ((ImageMessageViewHolder) holder).imageTime.setText(lastSeenTime);
                    glide.load(object.getImage())
                            .apply(new RequestOptions().dontAnimate().dontTransform())
                            .thumbnail(thumbnailRequestBlogImage)
                            .listener(new RequestListener<Drawable>() {
                                @Override
                                public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Drawable> target, boolean isFirstResource) {
                                    return false;
                                }

                                @Override
                                public boolean onResourceReady(Drawable resource, Object model, Target<Drawable> target, DataSource dataSource, boolean isFirstResource) {
                                    return false;
                                }
                            })
                            .into(((ImageMessageViewHolder) holder).messageImage);
                break;
            case IMAGE_TEXT_TYPE_USER:

                    ((ImageMessageWithTextViewHolderUser) holder).imageTextUser.setText(object.getImageText());
                    ((ImageMessageWithTextViewHolderUser) holder).imageTimeUser.setText(lastSeenTime);

                    glide.load(object.getImage())
                            .apply(new RequestOptions().dontAnimate().dontTransform())
                            .thumbnail(thumbnailRequestBlogImage)
                            .listener(new RequestListener<Drawable>() {
                                @Override
                                public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Drawable> target, boolean isFirstResource) {
                                    return false;
                                }

                                @Override
                                public boolean onResourceReady(Drawable resource, Object model, Target<Drawable> target, DataSource dataSource, boolean isFirstResource) {
                                    return false;
                                }
                            })
                            .into(((ImageMessageWithTextViewHolderUser) holder).messageImageUser);
                break;
            case IMAGE_TEXT_TYPE_OTHER:

                    ((ImageMessageWithTextViewHolder) holder).imageText.setText(object.getImageText());
                    ((ImageMessageWithTextViewHolder) holder).imageTime.setText(lastSeenTime);

                    glide.load(object.getImage())
                            .apply(new RequestOptions().dontAnimate().dontTransform())
                            .thumbnail(thumbnailRequestBlogImage)
                            .listener(new RequestListener<Drawable>() {
                                @Override
                                public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Drawable> target, boolean isFirstResource) {
                                    return false;
                                }

                                @Override
                                public boolean onResourceReady(Drawable resource, Object model, Target<Drawable> target, DataSource dataSource, boolean isFirstResource) {
                                    return false;
                                }
                            })
                            .into(((ImageMessageWithTextViewHolder) holder).messageImage);

                break;
        }
}

Я использую Firestore для отправки и получения сообщений.Это происходит только с последним сообщением. Вот снимок экрана, когда я открываю chatActivity.

Вот снимок экрана, когда я прокручиваю вверх, а затем снова вниз. Я даже пытался установить holder.setIsRecyclable (false)но все равно безуспешно.Вот что такое ChatActivity XML: 

<?xml version="1.0" encoding="utf-8"?>
<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="#cfd8dc"
tools:context=".Activities.ChatActivity">

<android.support.v7.widget.RecyclerView
            android:layout_above="@+id/linearLayout"
            android:id="@+id/messages_list"
            android:layout_width="match_parent"
            android:layout_height="match_parent">
        </android.support.v7.widget.RecyclerView>

<LinearLayout
    android:id="@+id/linearLayout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_alignParentStart="true"
    android:background="@android:color/white"
    android:orientation="horizontal"
    android:weightSum="10">

    <ImageButton
        android:layout_gravity="center"
        android:id="@+id/chat_add_btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:alpha="0.5"
        android:background="@android:color/white"
        android:padding="10dp"
        app:srcCompat="@drawable/ic_add_black_24dp" />

    <EditText
        android:id="@+id/chat_message_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="8"
        android:background="@android:color/white"
        android:ems="10"
        android:hint="Enter Message..."
        android:inputType="textPersonName"
        android:paddingBottom="12dp"
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        android:paddingTop="14dp" />

    <ImageButton
        android:layout_gravity="center"
        android:id="@+id/chat_send_btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:alpha="0.5"
        android:background="@android:color/white"
        android:padding="10dp"
        app:srcCompat="@drawable/ic_send_black_24dp" />
</LinearLayout>
</RelativeLayout>

1 Ответ

0 голосов
/ 04 июня 2018

Итак, я получал currentUserId в onCreateViewHolder, 

 @Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int 
   viewType) {

        mAuth = FirebaseAuth.getInstance();
        currentUserId = mAuth.getCurrentUser().getUid();
       ........}

, а затем использовал его для возврата типа элемента в getItemView (), 

public int getItemViewType(int position) {
    switch (mMessageList.get(position).getType()){
    case 0:
        if (mMessageList.get(position).getFrom().equals(currentUserId))
            return TEXT_TYPE_USER;
        else
            return TEXT_TYPE_OTHER;
    case 1:
        if (mMessageList.get(position).getFrom().equals(currentUserId))
            return IMAGE_TYPE_USER;
        else
            return IMAGE_TYPE_OTHER;
    case 2:
        if (mMessageList.get(position).getFrom().equals(currentUserId))
            return IMAGE_TEXT_TYPE_USER;
        else
            return IMAGE_TEXT_TYPE_OTHER;
    default:
        return 1234567890;
    }
}

Итак, я обнаружил, что при накачкеВ последнем элементе сообщения (который является первым в моем списке, так как я отображаю представление восстановления в обратном порядке), моя переменная currentUserId выдавала значение null, поэтому getItemViewType вернул другой макет, но после повторного использования currentUserId имел значение, поэтому getItemViewType вернул правильный макет.Это было причиной, по которой последний элемент сначала испортился, но после переработки переместился обратно в правильное положение.

Спасибо, Амир Хоссейн Мирзаэй.

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