blackberry - 点击时的黑莓 ObjectListField

Question

当用户单击列表项时，如何从黑莓对象列表字段中获取选定的行？

Answer 1

getSelectedIndex()

您还必须设置 setChangeListener() 并实现相应的方法，如 fieldChanged() 和 keyDown()

您在询问之前阅读过文档吗？你有更具体的问题吗？

Answer 2

public boolean navigationClick(int status, int time) {
    Field focus = list.getLeafFieldWithFocus();
    Dialog.alert("Focus String :: " + focus.getIndex());

    if (focus instanceof ListField) {
        ListField listField = (ListField)focus;

        Dialog.alert("Selected Index"+listField.getSelectedIndex());
        Dialog.alert("Selected List Value"+listField.getCallback().get(listField,
            listField.getSelectedIndex()).toString());
    }
    return true;
}