我怎样才能让RecyclerView变得更流畅？

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我正在写一个体育应用程序。我必须在这个应用程序的列表中显示所有游戏。以前我使用ListView，但现在我使用RecyclerView，它的速度更好，但它仍然不是很顺利和好。

如何使这更好，更顺畅？

public class RecyclerAdapterMatch extends RecyclerView.Adapter<RecyclerAdapterMatch.CustomViewHolder> {

private ArrayList<String> ls = new ArrayList<>();

private LayoutInflater mInflater;

Context con;
boolean page_info_know;
String tv_stat;

String[][] weeks = {{"اول", "دوم", "سوم", "چهارم", "پنجم", "ششم", "هفتم", "هشتم", "نهم", "دهم", "یازدهم", "دوازدهم", "سیزدهم", "چهاردهم", "پانزدهم", "شانزدهم", "هفدهم", "هجدهم", "نوزدهم", "بیستم", "بیست و یکم", "بیست و دوم", "بیست و سوم", "بیست و چهارم", "بیست و پنجم", "بیست و ششم", "بیست و هفتم", "بیست و هشتم", "بیست و نهم", "سی‌ام", "سی و یکم", "سی و دوم", "سی‌ و سوم", "سی و چهارم", "سی و پنجم", "سی و ششم", "سی و هفتم", "سی و هشتم", "سی و نهم", "چهلم"},
        {"رده‌بندی", "فینال", "نیمه‌نهایی", "یک چهارم", "یک هشتم", "یک شانزدهم نهایی", "۱/۳۲ نهایی", "۱/۶۴ نهایی"},
        {"یک", "دو", "سه", "چهار", "پنج", "شش", "هفت", "هشت", "نه", "ده", "یازده", "دوازده", "سیزده", "چهارده", "پانزده", "شانزده", "هفده", "هجده", "نوزده", "بیست"}};


public RecyclerAdapterMatch(Context con) {//}, ArrayList<String> ls) {
    this.con = con;
    //this.ls = ls;
}

public void addItem(Object object) {
    ls.add( object.toString() );
}

@Override
public int getItemViewType(int position) {
    if (ls.get( position ).contains( "LeagueId" ))
        return 0;
    else return 1;
}

@Override
public CustomViewHolder onCreateViewHolder(ViewGroup viewGroup, int i/*in position nist*/) {

    CustomViewHolder leagueHolder = null;
    View v = null;


    try {

        if (i == 0) {
            v = LayoutInflater.from( viewGroup.getContext() ).inflate( R.layout.ly_row_league, viewGroup, false );

        } else {

            v = LayoutInflater.from( viewGroup.getContext() ).inflate( R.layout.row_result, viewGroup, false );

        }
    } catch (Exception e) {

    }

    return new CustomViewHolder( v );

}

public void onBindViewHolder(@NonNull CustomViewHolder holder, int position) {

    try {
        JSONObject js=new JSONObject( ls.get( position ) );

        if (js.has( "LeagueId" )) {

            holder.league_name.setTypeface( AppConfig.getFont( con ) );
            holder.league_enter.setTypeface( AppConfig.getFontMaterial( con ) );
            holder.league_enter.setText( "uf141" );

            switch (js.getInt( "Type" )) {
                case 0:
                    holder.league_name.setText( js.getString( "LeagueName" ) );
                    break;
                case 1:
                    holder.league_name.setText( js.getString( "LeagueName" ) + " | هفته " + weeks[js.getInt( "Type" ) - 1][js.getInt( "Week" ) - 1] );
                    break;
                case 2:
                    holder.league_name.setText( js.getString( "LeagueName" ) + " | مرحله " + weeks[js.getInt( "Type" ) - 1][js.getInt( "Week" ) - 1] );
                    break;
                default:
                    holder.league_name.setText( js.getString( "LeagueName" ) + " | گروه " + weeks[js.getInt( "Type" ) - 1][js.getInt( "Week" ) - 1] );
                    break;
            }


            int League_Type = js.getInt( "Type" );
            if (League_Type == 0) {
                holder.rel_league.setClickable( false );
            }

            holder.line_league.setBackgroundColor( Color.parseColor( "#" + js.getString( "Color" ) ) );

            page_info_know = js.getBoolean( "PageInfo" );

        } else {

            holder.txt_time.setTypeface( AppConfig.getFontLightNumFa( con ) );
            holder.txt_homeName.setTypeface( AppConfig.getFontBold( con ) );
            holder.txt_guestName.setTypeface( AppConfig.getFontBold( con ) );
            holder.txt_homeName.setText( js.getString( "HostName" ) );
            holder.txt_guestName.setText( js.getString( "GuestName" ) );

            holder.txt_RT.setTextSize( 12 );
            holder.txt_RT.setTypeface( AppConfig.getFont( con ) );

            holder.txt_date.setTypeface( AppConfig.getFont( con ) );

            ////////
            if (js.getInt( "Status" ) == 1) {

                AlphaAnimation alpha = new AlphaAnimation( 0, 1 );
                alpha.setDuration( 500 );
                alpha.setRepeatCount( Animation.INFINITE );
                alpha.setRepeatMode( Animation.REVERSE );
                holder.txt_live.setVisibility( View.VISIBLE );
                holder.txt_live.setAnimation( alpha );
                holder.txt_live.setTypeface( AppConfig.getFont( con ) );
                holder.img_live.setVisibility( View.VISIBLE );
                holder.img_live.setAnimation( alpha );

                holder.txt_time.setText( String.format( new Locale( "fa", "IR" ), "%d", js.getInt( "GuestGoal" ) ) + " - " + String.format( new Locale( "fa", "IR" ), "%d", js.getInt( "HostGoal" ) ) );

            } else if (js.getInt( "Status" ) == 2) {
                holder.txt_time.setText( String.format( new Locale( "fa", "IR" ), "%d", js.getInt( "GuestGoal" ) ) + " - " + String.format( new Locale( "fa", "IR" ), "%d", js.getInt( "HostGoal" ) ) );

            } else if (js.getInt( "Status" ) == 0) {

                StringBuilder time = new StringBuilder( js.getString( "Time" ).replace( "0", "۰" ).replace( "1", "۱" ).replace( "2", "۲" ).replace( "3", "۳" ).replace( "4", "۴" ).replace( "5", "۵" ).replace( "6", "۶" ).replace( "7", "۷" ).replace( "8", "۸" ).replace( "9", "۹" ) );
                time.insert( 2, ":" );
                holder.txt_time.setText( time.toString() );

            } else if (js.getInt( "Status" ) == 3) {
                holder.rel_tv_status.setVisibility( View.VISIBLE );
                holder.txt_RT.setText( "لغو شده" );
            }

            tv_stat = js.getString( "RT" );

            if (page_info_know == false) {

                if (tv_stat == null || tv_stat.trim().length() == 0 || tv_stat.contains( "null" )) {
                    holder.rel_tv_status.setVisibility( View.GONE );
                } else {
                    holder.rel_tv_status.setVisibility( View.VISIBLE );
                    holder.txt_RT.setText( tv_stat );
                }
            } else {
                holder.rel_tv_status.setVisibility( View.VISIBLE );
                holder.txt_RT.setText( tv_stat );
                StringBuilder time = new StringBuilder( String.format( new Locale( "fa", "IR" ), "%d", js.getInt( "Date" ) ) );
                time.insert( 4, "/" );
                time.insert( 7, "/" );
                holder.txt_date.setText( time.toString() );
            }

            if (js.getString( "IsVideo" ).contains( "true" ) /*|| js.getString( "IsVideo" ).equals("null")*/) {
                holder.text_info.setVisibility( View.VISIBLE );
                holder.text_info.setTypeface( AppConfig.getFontMaterial( con ) );
                holder.text_info.setText( "uf40d" );
            } else {
                holder.text_info.setVisibility( View.GONE );
            }

        }

    } catch (Exception e) {

    }

}


@Override
public int getItemCount() {
    if (ls != null) {
        return ls.size();
    }
    return 0;
}

static class CustomViewHolder extends RecyclerView.ViewHolder {


    protected TextView txt_homeName, txt_guestName, txt_time, txt_RT, txt_live, league_name, league_enter, txt_date, text_info;
    protected RelativeLayout rel_tv_status, rel_league;
    protected ImageView img_live, img_league;
    protected LinearLayout line_league;

    public CustomViewHolder(View view) {
        super( view );
        txt_homeName = view.findViewById( R.id.textView10 );
        txt_guestName = view.findViewById( R.id.textView9 );
        txt_time = view.findViewById( R.id.textView3 );
        rel_tv_status = view.findViewById( R.id.tv_status_rel );

        txt_RT = view.findViewById( R.id.textView170 );
        txt_live = view.findViewById( R.id.textView74 );
        img_live = view.findViewById( R.id.imageView65 );
        league_name = view.findViewById( R.id.textView160 );
        league_enter = view.findViewById( R.id.textView161 );
        img_league = view.findViewById( R.id.imageView69 );
        line_league = view.findViewById( R.id.league_line_color );
        rel_league = view.findViewById( R.id.line_league_all );
        txt_date = view.findViewById( R.id.textView174 );
        text_info = view.findViewById( R.id.textView176 );

    }
}


}
答案

有一些问题引人注目

1.不要在onBindViewHolder上创建新对象

例如，将此部分移至RecyclerAdapterMatch(Context con)

AlphaAnimation alpha = new AlphaAnimation( 0, 1 );
alpha.setDuration( 500 );
alpha.setRepeatCount( Animation.INFINITE );
alpha.setRepeatMode( Animation.REVERSE );

2.每次设置字体时都不要创建字体，而是在活动或适配器初始化时创建字体，使其静态并在每次调用时使用它。例如，将holder.league_name.setTypeface( AppConfig.getFont( con ));替换为holder.league_name.setTypeface(staticFontName);

3.如果文本始终应用于textview，则不要以编程方式将文本设置为相同的文本，而是将其设置为xml。

用league_enter.setText( "uf141" )替换

<TextView 
     android:id="+@textView161"
     android:text="uf141"

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