Question

我有一份清单,有一份定制调制人(来自基地Adapter),各行的布局包括一个文本电文和一个布顿。在名单编制之后,我想改变具体县的可见度。

为此,我需要从方案上了解个人行情。我无法找到如何做到这一点。提到有意见(立场),但我看不到这种方法;getView(需要3个参数。我作为<条码>通过的内容观点(立场) 观点改变观点,小组的上级:?

Could you please point me in right direction?

UPDATE: The View received by v = myListView.getChildAt (myListView.getFirstVisiblePosition ();. 另外,我的ListView.getChildCount()正在返回。

Answer 1

onItemClick will pass you the View in the ListView that was clicked. Then you can grab that View and do whatever you want with it, including changing visibility, etc.

http://developer.android.com/reference/android/widget/AdapterView.OnItemClickListener.html

Answer 2

Here is an example I of a custom adapter I used in a list view in which the user can select items in the listView and mark them for Delete. The key is to add the onClickListener after you have a view. Then you can use that to not only change the view, but update the data of the adapter too. Hopefully you can modify this code to suit your particulars.

private class DeletePlayerAdapter extends ArrayAdapter<Player> {
    Context context;
    int layoutResourceId;
    ArrayList<Player> data;

    public DeletePlayerAdapter(Context context, int layout,
            ArrayList<Player> list) {
        super(context, layout, list);
        this.layoutResourceId = layout;
        this.context = context;
        this.data = list;
    }

    @Override
    public View getView(final int position, View convertView,
            ViewGroup parent) {
        View row = convertView;
        PlayerHolder holder = null;
        if (row == null) {
            LayoutInflater inflater = ((Activity) context)
                    .getLayoutInflater();
            row = inflater.inflate(layoutResourceId, parent, false);
            holder = new PlayerHolder();
            holder.player_name = (TextView) row
                    .findViewById(R.id.player_name);
            holder.player_number = (TextView) row
                    .findViewById(R.id.player_number);
            holder.seeded_button = (ImageButton) row
                    .findViewById(R.id.delete_toggle);
            holder.player_name.setTypeface(tf);
            holder.player_number.setTypeface(tf);
            row.setTag(holder);
            players_array.get(position).marked_for_delete = false;

        } else {
            Log.d("PLAYER_ADAPTER", "NOT_NULL ROW");
            holder = (PlayerHolder) row.getTag();
        }
        holder.seeded_button.setOnClickListener(new OnClickListener() {
            private int pos = position;

            public void onClick(View v) {
                ImageButton b = (ImageButton) v;
                if (b.isSelected()) {
                    b.setSelected(false);
                    players_array.get(pos).marked_for_delete = false;
                } else {
                    b.setSelected(true);
                    players_array.get(pos).marked_for_delete = true;
                }
            }
        });
        Player p = data.get(position);
        holder.player_name.setText(p.name);
        holder.player_number.setText(String.valueOf(position+1));
        holder.seeded_button
                .setSelected(players_array.get(position).marked_for_delete);
        return row;
    }

}

static class PlayerHolder {
    TextView player_number;
    TextView player_name;
    ImageButton seeded_button;
}

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