点击事件的确认取消对话框。

AlertDialog dialog = new AlertDialog.Builder(this).create();
            dialog.setTitle("对话框");
            dialog.setIcon(R.drawable.ic_launcher);
            dialog.setButton(DialogInterface.BUTTON_POSITIVE, "确认", new DialogInterface.OnClickListener() {

                @Override
                public void onClick(DialogInterface dialog, int which) {
                    String s = data.get(pos);

                    data.remove(pos);
                    data.add(0, s);

                    mAdapter.notifyDataSetChanged();

                    Toast.makeText(getApplicationContext(), "已确认！", 0).show();
                }
            });

            dialog.setButton(DialogInterface.BUTTON_NEGATIVE, "取消", new DialogInterface.OnClickListener() {

                @Override
                public void onClick(DialogInterface dialog, int which) {
                    String s = data.get(pos);

                    Toast.makeText(getApplicationContext(), "已取消！", 0).show();
                }
            });
            dialog.show();