Android 具有很长文本的ListView无法平滑滚动。如何提高性能？

我创建的一些视图包含很长的文本（即15k字符）。我怎样才能在没有任何障碍的情况下滚动这些视图？ 我曾尝试在一个单独的威胁中创建视图，因为我认为延迟可能来自度量过程——但当视图添加到ListView时，hickup仍然存在。

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有人对如何处理这个问题有不同的想法吗？

尽管您没有提供更多信息，但请尝试一下

Listview页脚用作页脚布局

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hick ups同时有这么多可见/活动/存在的数据是正常的

与其花很多时间来改善设计糟糕的系统的性能，有时最好改变这种设计。这里有一些替代解决方案，它们只需要同时存在一个或几个文本

对ListView项的内容使用较短的文本，并且仅在选择项后显示该项的全部文本。在不同的片段或活动中

制作包含整个文本的选项卡或水平页面，并在更改选项卡/页面时加载新数据（例如，页面使用水平翻转进行更改）

经历这一切

import android.widget.Toast;

public class TuneAdapter extends BaseAdapter {

    LayoutInflater inflater;
    Context mcontext;





    String[] name={"Donald Duck","Peter griffin","Lion roaring","Boo laugh","Cowboy","Tarzan","Bird word","Angry cat","Madagascar Move"};

    int[]image={R.drawable.donald,R.drawable.peter,R.drawable.lion,R.drawable.boo,R.drawable.cow,R.drawable.tarze,R.drawable.bird,R.drawable.cat,R.drawable.meda};


    int[] audio={R.raw.donald,R.raw.peter_griffin_fart,R.raw.lion_roaring,R.raw.boo_laugh,R.raw.cowboy,R.raw.tarzan,R.raw.bird_is_the_word,R.raw.angry_cat,R.raw.madagascar_move_it};
    public TuneAdapter(Activity activity) {
        // TODO Auto-generated constructor stub

        mcontext=activity;

        inflater=(LayoutInflater) mcontext.getSystemService(mcontext.LAYOUT_INFLATER_SERVICE);



    }

    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return audio.length;
    }

    @Override
    public Object getItem(int arg0) {

        // TODO Auto-generated method stub
        return arg0;
    }

    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return position;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub

        final ViewHolder holder;



        if(convertView==null)
        {

            holder=new ViewHolder();

            convertView=inflater.inflate(R.layout.tuneadapter, null);

            holder.image=(ImageView) convertView.findViewById(R.id.tune_image);

            holder.name=(TextView) convertView.findViewById(R.id.Tune_name);

            holder.use=(TextView) convertView.findViewById(R.id.tune_use);

            holder.visualizer=(VisualizerView) convertView.findViewById(R.id.visualizerView1);

            holder.play=(ImageButton) convertView.findViewById(R.id.tune_play);

            convertView.setTag(holder);
        }
        else
        {
            holder=(ViewHolder) convertView.getTag();
        }


        holder.image.setImageResource(image[position]);

        holder.name.setText(name[position]);



        holder.use.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                new SvaeSDCard(audio[position],name[position]).execute(1);

            }
        });



        holder.play.setOnClickListener(new OnClickListener() {


            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub


                  MediaPlayer mPlayer  = MediaPlayer.create(mcontext,audio[position]);

                mPlayer.start();

                holder.play.setVisibility(View.INVISIBLE);

                holder.visualizer.setVisibility(View.VISIBLE);

                holder.visualizer.link(mPlayer);



                Paint paint = new Paint();

                paint.setStrokeWidth(10f);

                paint.setAntiAlias(true);

                paint.setColor(Color.argb(255, 0, 0, 0));

                BarGraphRenderer barGraphRendererBottom = new BarGraphRenderer(3, paint, false);

                holder.visualizer.addRenderer(barGraphRendererBottom);

                mPlayer.setOnCompletionListener(new OnCompletionListener() {

                    @Override
                    public void onCompletion(MediaPlayer mp) {
                        // TODO Auto-generated method stub

                        holder.play.setVisibility(View.VISIBLE);



                    }
                });
            }
        });



        return convertView;
    }


    class ViewHolder
    {

        ImageView image;

        TextView name,use;

        VisualizerView visualizer;

        ImageButton play;
    }

}

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请发布所有相关的代码，如适配器等。否则将很难查明问题。一般来说，长文本不应该是一个问题，其他的东西一定是错的。

import android.widget.Toast;

public class TuneAdapter extends BaseAdapter {

    LayoutInflater inflater;
    Context mcontext;





    String[] name={"Donald Duck","Peter griffin","Lion roaring","Boo laugh","Cowboy","Tarzan","Bird word","Angry cat","Madagascar Move"};

    int[]image={R.drawable.donald,R.drawable.peter,R.drawable.lion,R.drawable.boo,R.drawable.cow,R.drawable.tarze,R.drawable.bird,R.drawable.cat,R.drawable.meda};


    int[] audio={R.raw.donald,R.raw.peter_griffin_fart,R.raw.lion_roaring,R.raw.boo_laugh,R.raw.cowboy,R.raw.tarzan,R.raw.bird_is_the_word,R.raw.angry_cat,R.raw.madagascar_move_it};
    public TuneAdapter(Activity activity) {
        // TODO Auto-generated constructor stub

        mcontext=activity;

        inflater=(LayoutInflater) mcontext.getSystemService(mcontext.LAYOUT_INFLATER_SERVICE);



    }

    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return audio.length;
    }

    @Override
    public Object getItem(int arg0) {

        // TODO Auto-generated method stub
        return arg0;
    }

    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return position;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub

        final ViewHolder holder;



        if(convertView==null)
        {

            holder=new ViewHolder();

            convertView=inflater.inflate(R.layout.tuneadapter, null);

            holder.image=(ImageView) convertView.findViewById(R.id.tune_image);

            holder.name=(TextView) convertView.findViewById(R.id.Tune_name);

            holder.use=(TextView) convertView.findViewById(R.id.tune_use);

            holder.visualizer=(VisualizerView) convertView.findViewById(R.id.visualizerView1);

            holder.play=(ImageButton) convertView.findViewById(R.id.tune_play);

            convertView.setTag(holder);
        }
        else
        {
            holder=(ViewHolder) convertView.getTag();
        }


        holder.image.setImageResource(image[position]);

        holder.name.setText(name[position]);



        holder.use.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                new SvaeSDCard(audio[position],name[position]).execute(1);

            }
        });



        holder.play.setOnClickListener(new OnClickListener() {


            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub


                  MediaPlayer mPlayer  = MediaPlayer.create(mcontext,audio[position]);

                mPlayer.start();

                holder.play.setVisibility(View.INVISIBLE);

                holder.visualizer.setVisibility(View.VISIBLE);

                holder.visualizer.link(mPlayer);



                Paint paint = new Paint();

                paint.setStrokeWidth(10f);

                paint.setAntiAlias(true);

                paint.setColor(Color.argb(255, 0, 0, 0));

                BarGraphRenderer barGraphRendererBottom = new BarGraphRenderer(3, paint, false);

                holder.visualizer.addRenderer(barGraphRendererBottom);

                mPlayer.setOnCompletionListener(new OnCompletionListener() {

                    @Override
                    public void onCompletion(MediaPlayer mp) {
                        // TODO Auto-generated method stub

                        holder.play.setVisibility(View.VISIBLE);



                    }
                });
            }
        });



        return convertView;
    }


    class ViewHolder
    {

        ImageView image;

        TextView name,use;

        VisualizerView visualizer;

        ImageButton play;
    }

}