Question

我有三个RecyclerView，而且这三个都在滚动中滞后。我在互联网上尝试了许多建议，但没有任何事情使我的RecyclerView更快。

我尝试过以下解决方案，

RecyclerView laggy scrolling
Extremely Laggy RecyclerView Performance
Lags when RecyclerView scrolling

还有一些。其中一些不相关。但是，它仍然滞后。

作为参考，以下是RecyclerView项目的图像。

视图的xml（针对单个聊天气泡）。它与WhatsApp几乎相同。

<LinearLayout
    android:id="@+id/transactionOut"
    android:layout_width="@dimen/dp300"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:visibility="gone"
    android:layout_gravity="end"
    android:paddingStart="0dp"
    android:paddingLeft="0dp"
    android:paddingEnd="13dp"
    android:paddingRight="13dp"
    android:clickable="true"
    android:background="@drawable/outgoing_chat_bubble">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="start"
        android:minWidth="@dimen/dp100"
        android:orientation="horizontal"
        android:elevation="@dimen/general_margin_or_padding_very_small"
        android:padding="@dimen/dp10">

        <ImageView
            android:id="@+id/transactionImageOut"
            android:layout_margin="@dimen/dp4"
            android:layout_width="@dimen/size_transaction"
            android:layout_height="@dimen/size_transaction"
            android:padding="3dp"
            android:visibility="gone"
            android:src="@drawable/ic_transaction_indication_sent"
            android:layout_gravity="center_vertical"
            android:contentDescription="@string/payment_sent"/>

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginEnd="4dp"
            android:layout_marginRight="4dp"
            android:gravity="center"
            android:textSize="@dimen/general_for_all"
            android:text="–"
            android:textColor="@color/app_font_detail_color"/>

        <style.views.CustomTextView
            android:id="@+id/transactionAmountOut"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/progress_loading"
            android:textColor="@color/app_font_detail_color"
            android:layout_marginLeft="@dimen/dp4"
            android:layout_marginStart="@dimen/dp4"
            android:ellipsize="end"
            android:maxLines="1"
            android:textSize="@dimen/general_for_all"
            appUI:font="@string/appNormalFontName"/>

    </LinearLayout>

    <View
        android:id="@+id/separatorMessageOut"
        android:layout_width="match_parent"
        android:layout_height="0.5dp"
        android:visibility="gone"
        android:layout_marginStart="@dimen/general_margin_or_padding_very_small"
        android:layout_marginEnd="@dimen/general_margin_or_padding_very_small"
        android:layout_marginRight="@dimen/general_margin_or_padding_very_small"
        android:layout_marginLeft="@dimen/general_margin_or_padding_very_small"
        android:background="@color/app_font_detail_color"/>

    <LinearLayout
        android:id="@+id/layoutMessageOut"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="top"
        android:visibility="gone"
        android:paddingTop="@dimen/general_margin_or_padding_very_small"
        android:paddingBottom="@dimen/general_margin_or_padding_very_small">

        <ImageView
            android:layout_width="@dimen/size_extra_icon"
            android:layout_height="@dimen/size_extra_icon"
            android:layout_marginTop="@dimen/icon_margin_top"
            android:src="@drawable/ic_sms"
            android:layout_marginStart="@dimen/general_margin_or_padding_small"
            android:layout_marginLeft="@dimen/general_margin_or_padding_small"
            android:visibility="visible"
            android:contentDescription="@string/design"/>


        <TextView
            android:id="@+id/textMessageOut"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginStart="@dimen/general_margin_or_padding_very_small"
            android:layout_marginLeft="@dimen/general_margin_or_padding_very_small"
            android:textColor="@color/app_font_detail_color"
            android:text="Text message"/>

    </LinearLayout>

    <View
        android:id="@+id/separatorNoteOut"
        android:layout_width="match_parent"
        android:layout_height="0.5dp"
        android:visibility="gone"
        android:layout_marginStart="@dimen/general_margin_or_padding_very_small"
        android:layout_marginEnd="@dimen/general_margin_or_padding_very_small"
        android:layout_marginRight="@dimen/general_margin_or_padding_very_small"
        android:layout_marginLeft="@dimen/general_margin_or_padding_very_small"
        android:background="@color/app_font_detail_color"/>

    <LinearLayout
        android:id="@+id/layoutNoteOut"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="top"
        android:visibility="gone"
        android:paddingTop="@dimen/general_margin_or_padding_very_small"
        android:paddingBottom="@dimen/general_margin_or_padding_very_small">

        <ImageView
            android:layout_width="@dimen/size_extra_icon"
            android:layout_height="@dimen/size_extra_icon"
            android:layout_marginTop="@dimen/icon_margin_top"
            android:src="@drawable/ic_notes"
            android:layout_marginStart="@dimen/general_margin_or_padding_small"
            android:layout_marginLeft="@dimen/general_margin_or_padding_small"
            android:visibility="visible"
            android:contentDescription="@string/design"/>


        <TextView
            android:id="@+id/textNoteOut"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginStart="@dimen/general_margin_or_padding_very_small"
            android:layout_marginLeft="@dimen/general_margin_or_padding_very_small"
            android:textColor="@color/app_font_detail_color"
            android:text="Text note"/>

    </LinearLayout>

    <View
        android:layout_width="match_parent"
        android:layout_height="0.5dp"
        android:background="@color/app_font_detail_color"
        android:layout_marginStart="@dimen/general_margin_or_padding_very_small"
        android:layout_marginEnd="@dimen/general_margin_or_padding_very_small"
        android:layout_marginRight="@dimen/general_margin_or_padding_very_small"
        android:layout_marginLeft="@dimen/general_margin_or_padding_very_small"/>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:padding="@dimen/dp6">

        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:gravity="start|center_vertical">

            <style.views.CircleImageView
                android:id="@+id/bankLogoOut"
                android:layout_width="24dp"
                android:layout_height="24dp"
                android:layout_gravity="center_vertical"
                android:src="@drawable/placeholder_default"
                appUI:circular_border_color="@color/profile_border_color"
                appUI:circular_border_width="@dimen/dp1" />

            <TextView
                android:id="@+id/bankNameOut"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginStart="@dimen/general_margin_or_padding_very_small"
                android:layout_marginLeft="@dimen/general_margin_or_padding_very_small"
                android:maxLines="1"
                android:ellipsize="end"
                android:text="@string/progress_loading"
                android:textSize="@dimen/small_size" />

        </LinearLayout>

        <ImageView
            android:id="@+id/showDetailImageOut"
            android:layout_width="0dp"
            android:layout_weight="0.5"
            android:layout_height="wrap_content"
            android:layout_marginRight="@dimen/dp4"
            android:layout_marginEnd="@dimen/dp4"
            android:src="@drawable/ic_transaction_more"
            android:contentDescription="@string/more"/>

        <RelativeLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1">

            <ImageView
                android:id="@+id/messageStatusImageOut"
                android:layout_width="@dimen/size_transaction"
                android:layout_height="@dimen/size_transaction"
                android:layout_centerVertical="true"
                android:src="@drawable/ic_pending"
                android:layout_marginStart="@dimen/general_margin_or_padding_small"
                android:layout_marginLeft="@dimen/general_margin_or_padding_small"
                android:visibility="visible"
                android:contentDescription="@string/design"
                android:layout_alignParentEnd="true"
                android:layout_alignParentRight="true"/>

            <style.views.CustomTextView
                android:id="@+id/transactionDatetimeOut"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_centerVertical="true"
                android:gravity="end"
                android:text="@string/account"
                android:textColor="@color/app_font_detail_color"
                android:textSize="@dimen/date_time_stamp"
                android:layout_toLeftOf="@+id/messageStatusImageOut"
                android:layout_toStartOf="@+id/messageStatusImageOut" />

        </RelativeLayout>


    </LinearLayout>

</LinearLayout>

这是适配器

@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
    holder.setIsRecyclable(false);
    if (holder instanceof HeaderViewHolder) {
        HeaderViewHolder transactionViewHolder = (HeaderViewHolder) holder;
        String getTodayDate = (String) filteredList.get(position);
        transactionViewHolder.setDate(DateUtility.getFormattedDate(getTodayDate));

    } else if (holder instanceof MainViewHolder) {
        MainViewHolder viewHolder = (MainViewHolder) holder;
        try {
            final History history = (History) filteredList.get(position);
            viewHolder.setTransaction(history, mContext);
        } catch (Exception e){
            e.printStackTrace();
        }
    }
}

setTransaction

ViewHolder

private void setTransaction(final History history, final Context context){
    String myId = new Session(context).getStringForKey(Session.prIdKey);
    if(history.getTo().equals(history.getFrom())) {

        transactionSelf.setVisibility(View.VISIBLE);
        transactionOut.setVisibility(View.GONE);
        transactionIn.setVisibility(View.GONE);

        transactionAmountSelf.setText(Utils.parseIntoPKR(history.getAmount()));
        transactionDateTimeSelf.setText(DateUtility.getTimeFromEpoch(history.getEpoch()));

        messageStatusImageSelf.setVisibility(View.VISIBLE);
        switch (history.getStatus()) {
            case Constants.STATUS_PENDING:
                messageStatusImageSelf.setImageResource(R.drawable.ic_pending);
                break;
            case Constants.STATUS_FAILED:
                messageStatusImageSelf.setImageResource(R.drawable.ic_transaction_status_blocked);
                break;
            default:
                messageStatusImageSelf.setImageResource(R.drawable.ic_transaction_status_done);
                break;
        }

        LinkedBank associatedBank = history.getSenderBank();
        bankNameSelf.setText(associatedBank.fetchAbbreviationAndAccountNumber());

        if(history.getReceiverNotes() != null && history.getReceiverNotes().length() > 0) {
            separatorNoteSelf.setVisibility(View.VISIBLE);
            layoutNoteSelf.setVisibility(View.VISIBLE);
            textNoteSelf.setText(history.getReceiverNotes());
        } else if(history.getSenderNotes() != null && history.getSenderNotes().length() > 0) {
            separatorNoteSelf.setVisibility(View.VISIBLE);
            layoutNoteSelf.setVisibility(View.VISIBLE);
            textNoteSelf.setText(history.getSenderNotes());
        }

        transactionSelf.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ((OnIndividualTransactionSelection) context).onTransactionSelected(history);
            }
        });


    } else if(history.getFrom().equals(myId)) {
        //from my number -> cash out
        transactionOut.setVisibility(View.VISIBLE);
        transactionIn.setVisibility(View.GONE);
        transactionSelf.setVisibility(View.GONE);

        if(history.getMessage() != null && history.getMessage().length() > 0) {
            separatorMessageOut.setVisibility(View.VISIBLE);
            layoutMessageOut.setVisibility(View.VISIBLE);
            textMessageOut.setText(history.getMessage());
        }

        if(history.getSenderNotes() != null && history.getSenderNotes().length() > 0) {
            separatorNoteOut.setVisibility(View.VISIBLE);
            layoutNoteOut.setVisibility(View.VISIBLE);
            textNoteOut.setText(history.getSenderNotes());
        }

        messageStatusImageOut.setVisibility(View.VISIBLE);
        switch (history.getStatus()) {
            case Constants.STATUS_PENDING:
                messageStatusImageOut.setImageResource(R.drawable.ic_pending);
                break;
            case Constants.STATUS_FAILED:
                messageStatusImageOut.setImageResource(R.drawable.ic_transaction_status_blocked);
                break;
            default:
                messageStatusImageOut.setImageResource(R.drawable.ic_transaction_status_done);
                break;
        }


        transactionAmountOut.setText(Utils.parseIntoPKR(history.getAmount()));
        transactionDatetimeOut.setText(DateUtility.getTimeFromEpoch(history.getEpoch()));

        LinkedBank associatedBank = history.getSenderBank();
        bankNameOut.setText(associatedBank.fetchAbbreviationAndAccountNumber());
        Picasso.with(context).load(associatedBank.getBankLogo()).placeholder(R.drawable.placeholder_default).error(R.drawable.placeholder_default).into(bankLogoOut);


        transactionOut.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ((OnIndividualTransactionSelection) context).onTransactionSelected(history);
            }
        });

    } else if(history.getTo().equals(myId)) {
        transactionIn.setVisibility(View.VISIBLE);
        transactionOut.setVisibility(View.GONE);
        transactionSelf.setVisibility(View.GONE);

        if(history.getMessage() != null && history.getMessage().length() > 0) {
            separatorMessageIn.setVisibility(View.VISIBLE);
            layoutMessageIn.setVisibility(View.VISIBLE);
            textMessageIn.setText(history.getMessage());
        }

        if(history.getReceiverNotes() != null && history.getReceiverNotes().length() > 0) {
            separatorNoteIn.setVisibility(View.VISIBLE);
            layoutNoteIn.setVisibility(View.VISIBLE);
            textNoteIn.setText(history.getReceiverNotes());
        }


        transactionAmountIn.setText(Utils.parseIntoPKR(history.getAmount()));
        transactionDatetimeIn.setText(DateUtility.getTimeFromEpoch(history.getEpoch()));

        LinkedBank associatedBank = history.getReceiverBank();
        bankNameIn.setText(associatedBank.fetchAbbreviationAndAccountNumber());
        Picasso.with(context).load(associatedBank.getBankLogo()).placeholder(R.drawable.placeholder_default).error(R.drawable.placeholder_default).into(bankLogoIn);

        transactionIn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                ((OnIndividualTransactionSelection) context).onTransactionSelected(history);

            }
        });

    }

}

它的答案可以帮助我优化其他两个RecyclerView。任何帮助都非常感谢。

Answer 1

两个快速提示

1）您可能希望在仍在滚动的情况下减少处理量。这将大大提高滚动性能

2）你可能想看看这个和类似的新的＆＃39;之后，在每个绑定上分配会减慢滚动速度。

 String myId = new Session(context).getStringForKey(Session.prIdKey);

RecyclerView在滚动方面滞后

1 个答案: