Question

我有一张带按钮的表格。我将一个事件处理程序分配给工作表的一个元素。当你得到他的位置。但我需要将一个事件分配给工作表元素中的按钮。我在适配器中执行它并按下它。但是如何确定纸张的哪个元素被按下？

class RecordAdapter extends BaseAdapter implements View.OnClickListener {
    MediaPlayer mediaPlayer;
    private LayoutInflater inflater;
    ArrayList<RecordBean> recordBeans;
    Context ctx;

    public RecordAdapter(final Context ctx, ArrayList<RecordBean> recordBeans) {
        this.recordBeans =recordBeans;
        this.ctx=ctx;
        inflater = LayoutInflater.from(ctx);
    }

    @Override
    public int getCount() {
        return recordBeans.size();
    }

    @Override
    public Object getItem(int position) {
        return position;
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        View view = convertView;
        final ViewHolder holder;
        if (convertView == null) {
            view = inflater.inflate(R.layout.recorditem, parent, false);
            holder = new ViewHolder();
            holder.date = (TextView) view.findViewById(R.id.recordate);
            holder.from = (TextView) view.findViewById(R.id.recordFrom);
            holder.to = (TextView) view.findViewById(R.id.recordTo);
            holder.seekBar = (SeekBar) view.findViewById(R.id.seekBar);
            holder.start = (Button) view.findViewById(R.id.btnStart);
            holder.stop = (Button) view.findViewById(R.id.btnStop);

            view.setTag(holder);
        } else {
            holder = (ViewHolder) view.getTag();
        }
        holder.date.setText(" " + recordBeans.get(position).getDate());
        holder.from.setText(" " + recordBeans.get(position).getFrom());
        holder.to.setText(" " + recordBeans.get(position).getTo());
        holder.start.setOnClickListener(this);
        holder.stop.setOnClickListener(this);
        return view;
    }

    @Override
    public void onClick(View view) {
        switch (view.getId()){
            case R.id.btnStart:
                mediaPlayer = MediaPlayer.create(ctx,Uri.parse(recordBeans.get(3).getFile()));
                mediaPlayer.start();
                break;
        }
    }

    private static class ViewHolder {
        TextView date;
        TextView from;
        TextView to;
        SeekBar seekBar;
        Button start;
        Button stop;
    }
    }
}

代替recordBeans.get(3).getFile()我想写recordBeans.get(itemPosition).getFile()

现在我对所有按钮都有相同的设置

Answer 1

您可以在getView(...)方法本身

中执行此操作

     holder.start.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {

                    mediaPlayer = MediaPlayer.create(ctx,Uri.parse(recordBeans.get(position).getFile()));
                    mediaPlayer.start();

            }
        });

stop。

     holder.stop.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {

                  mediaPlayer.stop();

            }
        });

Answer 2

请尝试这种方式，希望这有助于您解决问题。

设置 RecordBean 数据以启动按钮标记，当您点击相应的开始按钮从<获取值< strong>标记并根据您的要求使用它。

class RecordAdapter extends BaseAdapter implements View.OnClickListener {
    MediaPlayer mediaPlayer;
    ArrayList<RecordBean> recordBeans;
    Context ctx;

    public RecordAdapter(final Context ctx, ArrayList<RecordBean> recordBeans) {
        this.recordBeans =recordBeans;
        this.ctx=ctx;
    }

    @Override
    public int getCount() {
        return recordBeans.size();
    }

    @Override
    public Object getItem(int position) {
        return position;
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        View view = convertView;
        final ViewHolder holder;
        if (convertView == null) {
            view = LayoutInflater.from(ctx).inflate(R.layout.recorditem, parent, false);
            holder = new ViewHolder();
            holder.date = (TextView) view.findViewById(R.id.recordate);
            holder.from = (TextView) view.findViewById(R.id.recordFrom);
            holder.to = (TextView) view.findViewById(R.id.recordTo);
            holder.seekBar = (SeekBar) view.findViewById(R.id.seekBar);
            holder.start = (Button) view.findViewById(R.id.btnStart);
            holder.stop = (Button) view.findViewById(R.id.btnStop);

            view.setTag(holder);
        } else {
            holder = (ViewHolder) view.getTag();
        }
        holder.date.setText(" " + recordBeans.get(position).getDate());
        holder.from.setText(" " + recordBeans.get(position).getFrom());
        holder.to.setText(" " + recordBeans.get(position).getTo());
        holder.start.setTag(recordBeans.get(position));
        holder.start.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mediaPlayer = MediaPlayer.create(ctx,Uri.parse(((RecordBean) v.getTag()).getFile()));
                mediaPlayer.start();
            }
        });
        holder.stop.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mediaPlayer.stop();
            }
        });
        return view;
    }

    private static class ViewHolder {
        TextView date;
        TextView from;
        TextView to;
        SeekBar seekBar;
        Button start;
        Button stop;
    }
}

Answer 3

检查一下：

    final int itemPosition = position;

    holder.start.setOnClickListenerOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {
                   mediaPlayer = MediaPlayer.create(ctx,Uri.parse(recordBeans.get(itemPosition ).getFile()));
                   mediaPlayer.start();
    }
    });
            holder.stop.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {
                    mediaPlayer.stop());
    }
    });

按下按钮元素列表视图

3 个答案: