Question

方法onClick（）仅在position == 0时有效？为什么呢？

public class mySCAdapter extends SimpleCursorAdapter implements OnClickListener {
final String LOG_TAG = "myLogs";
LayoutInflater inflater;
public mySCAdapter(Context context, int layout, Cursor c, String[] from,
        int[] to) {

    super(context, layout, c, from, to);
    inflater = LayoutInflater.from( context );
    // TODO Auto-generated constructor stub
}

@Override
public View getView( int position, View convertView, ViewGroup parent) {
    View v = null;

    if( convertView != null )
        v = convertView;
    else
        v = inflater.inflate( R.layout.add_program_ex_list_item, parent, false);
    ImageButton button = (ImageButton) v
            .findViewById(R.id.add_program_exercise_list);
    button.setTag(position);
    button.setOnClickListener(this); 


    return super.getView(position, convertView, parent);
}

@Override
public void onClick(View v) {
    Log.d(LOG_TAG, "It works, pos=" + v.getTag());

}
}

Answer 1

您没有正确覆盖getView()。它必须是这样的：

@Override
public View getView (int position, View convertView, ViewGroup parent) {
    View v = null;
    if (convertView != null)
        v = convertView;
    else
        v = inflater.inflate( R.layout.add_program_ex_list_item, parent, false);

    TextView textView = (TextView) v.findViewById(R.id.your_text_view);
    textView.setText(getItem(position));

    ImageButton button = (ImageButton) v.findViewById(R.id.add_program_exercise_list);
    button.setTag(position);
    button.setOnClickListener(this); 

    return v;
}

Answer 2

设置光标位置，如

而不是

button.setTag(position)

你做了

button.setTag(cursor.getPosition());

您可以在构造函数中设置游标。

this.cursor = c;

客户适配器内的ListView onClick（）方法内的ImageButton

2 个答案: