无法以编程方式选择使用对象的Javafx组合框项目 [英] Unable select Javafx combobox items programmatically which uses objects

问题描述

在使用类对象列表的JavaFx ComboBox中.我想使用getSelectionModel().select(object或index)以编程方式在ComboBox中选择项目.我没有得到期望的结果尽管设置了值，但是它类似于main.dao.Company.Company.CompanyTableData@74541e7b.代码有点像这样.

In the JavaFx ComboBox which uses a class object list .I want to select items in the ComboBox programmatically using getSelectionModel().select(object or index). i am not getting the desired result Although the value is set but it is something like this main.dao.Company.Company.CompanyTableData@74541e7b. The code is somewhat like this.

ComboBox<CompanyTableData> company = new ComboBox<>();
company.setItems(GetCompany.getCompanyTableData());//where Observable list is set..

GetCompany.getCompanyTableData()返回CompanyTableData类的可观察列表.

GetCompany.getCompanyTableData() returns observablelist of CompanyTableData class.

组合框的外观如下.

CompanyTableData类为.

The CompanyTableData Class is as.

public class CompanyTableData {
private SimpleStringProperty itemCompanyId;
private SimpleStringProperty itemCompanyName;
private SimpleStringProperty createBy;
private SimpleStringProperty createdOn;

public CompanyTableData(CompanyData companyData){
    this.itemCompanyId = new SimpleStringProperty(companyData.getItemCompanyId());
    this.itemCompanyName = new SimpleStringProperty(companyData.getItemCompanyName());
    this.createBy = new SimpleStringProperty(companyData.getCreatedBy());
    this.createdOn = new SimpleStringProperty(companyData.getCreatedOn());
}

public String getItemCompanyId() {
    return itemCompanyId.get();
}

public SimpleStringProperty itemCompanyIdProperty() {
    return itemCompanyId;
}

public void setItemCompanyId(String itemCompanyId) {
    this.itemCompanyId.set(itemCompanyId);
}

public String getItemCompanyName() {
    return itemCompanyName.get();
}

public SimpleStringProperty itemCompanyNameProperty() {
    return itemCompanyName;
}

public void setItemCompanyName(String itemCompanyName) {
    this.itemCompanyName.set(itemCompanyName);
}

public String getCreateBy() {
    return createBy.get();
}

public SimpleStringProperty createByProperty() {
    return createBy;
}

public void setCreateBy(String createBy) {
    this.createBy.set(createBy);
}

public String getCreatedOn() {
    return createdOn.get();
}

public SimpleStringProperty createdOnProperty() {
    return createdOn;
}

public void setCreatedOn(String createdOn) {
    this.createdOn.set(createdOn);
}

}

细胞工厂已设置

company.setCellFactory(param -> new CompanyCell());

还有CompanyCell

And the CompanyCell

public class CompanyCell extends ListCell<CompanyTableData> {
@Override
protected void updateItem(CompanyTableData item, boolean empty) {
    super.updateItem(item, empty);
    if (empty || item == null || item.getItemCompanyName() == null) {
        setText(null);
    } else {
        setText(item.getItemCompanyName());
    }
}

}

在所有这些之后，当我尝试以编程方式将项目设置为

After all this when i try to set the items programmetically as

company.getSelectionModel().select(getSelectedCompanyIndex());

getSelectedCompanyIndex()函数如下.

The getSelectedCompanyIndex() function is as follows.

public static CompanyTableData getSelectedCompanyIndex(){
    CompanyTableData c = null,i;
    Iterator<CompanyTableData> itr = GetCompany.getCompanyTableData().iterator();
    while (itr.hasNext()){
        i = itr.next();
        if (i.getItemCompanyName().equals(Element.getItemTableData().getCompany())){

            c = i;
        }
    }
    return c;
}

我得到的结果是和最后，它应该在列表中选择一个名称或项目，但我设置了某种类型的对象.

And the result i am getting is And At the end it should select a name or item in the list but it has set some type of object i think.

现在我该怎么办.是否需要任何类型的字符串转换.

Now what should i do. Is there any type of string conversion required.

推荐答案

在未显示组合框弹出窗口时用于显示项目的 buttonCell 不会使用 cellFactory自动创建.代码>.您还需要设置此属性以使用相同的单元实现:

The buttonCell used to display the item when the combobox popup is not shown is not automatically created using the cellFactory. You need to set this property too to use the same cell implementation:

company.setCellFactory(param -> new CompanyCell());
company.setButtonCell(new CompanyCell());

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