我正在使用 smartgwt 树组件。我试图将它扩展到用户树,如下面的类:
public UserTree() {
final List<NewNode> lista = new ArrayList<NewNode>();
lista.add(new NewNode(4,"333"));
setModelType(TreeModelType.PARENT);
setIdField("UserViewId");
setParentIdField("ReportsTo");
setNameProperty("Uzytkownicy");
zapelnijListeUzytkownikow(lista);
setRootValue(1);
setData(userViewData);
administrationService.zapelnijListeWezlow(token, new AsyncCallback<List<NewNode>>() {
@Override
public void onSuccess(List<NewNode> result) {
zapelnijListeUzytkownikow(result);
setData(userViewData);
}
@Override
public void onFailure(Throwable caught) {
Window.alert("fail");
}
};
}
protected TreeNode[] zapelnijListeUzytkownikow(List<NewNode> result) {
userViewData = new TreeNode[12];
/* userViewData = new TreeNode[result.size() + 4];
userViewData[0] = new UserViewTreeNode("2", "1", "Administratorzy");
userViewData[1] = new UserViewTreeNode("3", "1", "Uprzywilejowani");
userViewData[2] = new UserViewTreeNode("4", "1", "Uzytkownicy");
userViewData[3] = new UserViewTreeNode("5", "1", "Pozostali");
int i = 4;
for(NewNode nn : result) {
userViewData[i] = new UserViewTreeNode(String.valueOf(nn.getId()), "2", nn.getName());
i++;
}*/
userViewData[0] = new UserViewTreeNode("2", "1", "Administratorzy");
userViewData[1] = new UserViewTreeNode("3", "1", "Uprzywilejowani");
userViewData[2] =new UserViewTreeNode("4", "1", "Uzytkownicy");
userViewData[3] =new UserViewTreeNode("5", "1", "Pozostali");
userViewData[4] = new UserViewTreeNode("18", "2", "Fasola Jan");
userViewData[5] =new UserViewTreeNode("19", "2", "Puchatek Jakub");
userViewData[6] =new UserViewTreeNode("20", "3", "Klapouchy");
userViewData[7] =new UserViewTreeNode("21", "3", "Król Lew");
userViewData[8] =new UserViewTreeNode("22", "4", "Bolek");
userViewData[9] =new UserViewTreeNode("23", "4", "Lolek");
userViewData[10] =new UserViewTreeNode("24", "5", "Gargamel");
userViewData[11] =new UserViewTreeNode("25", "5", "Ciamajda");
return userViewData;
}
我想使用 asyncallback 将数据库中的数据放到这棵树中。它运行良好,但如果我想在 onSuccess 方法中使用 setData 方法,我得到一个错误:
“创建组件后,无法将配置属性 'data' 更改为 [Lcom.smartgwt.client.widgets.tree.TreeNode;@3c01807。”
创建树后如何刷新树上的数据?我想清理树上的所有值并放置由 ZapelnijListeWezlow 方法生成的值感谢您的帮助!