问题描述
我尝试填充tableView,我按照docs.oracle中给出的教程,
但是在我的表中有Integer字段,所以我也这样想添加它们:
I tried to populate a tableView, I followed the tutorial given in docs.oracle,But in my table there is Integer fields, so I do the same think to add them:
信息类中的代码(如Person类)
The code in the information class (like Person class)
private SimpleIntegerProperty gel;
.....
....
public int getGel() {
return gel.get();
}
public void setGel(int pop) {
gel.set(pop);
}
Main类中的代码
TableColumn gel = new TableColumn("Gel");
gel.setMinWidth(100);
gel.setCellValueFactory(
new PropertyValueFactory<Information, Integer>("gel"));
gel.setCellFactory(TextFieldTableCell.forTableColumn());
gel.setOnEditCommit(
new EventHandler<CellEditEvent<Information, Integer>>() {
@Override
public void handle(CellEditEvent<Information, Integer> t) {
((Information) t.getTableView().getItems().get(
t.getTablePosition().getRow())
).setGel(t.getNewValue());
}
}
);
但是我有错误:
Caused by: java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String
at javafx.util.converter.DefaultStringConverter.toString(DefaultStringConverter.java:34)
at javafx.scene.control.cell.CellUtils.getItemText(CellUtils.java:100)
at javafx.scene.control.cell.CellUtils.updateItem(CellUtils.java:201)
at javafx.scene.control.cell.TextFieldTableCell.updateItem(TextFieldTableCell.java:204)
问题出在你的手机工厂。
The problem is in your cell factory.
TableColumn
应该输入 TableColumn< Information,Integer>
。然后你会在这里看到一个错误:
TableColumn
should be typed to TableColumn<Information, Integer>
. Then you will see an error here:
gel.setCellFactory(TextFieldTableCell.forTableColumn());
(与运行时相同的错误)。原因是静态回调 forTableColumn
仅适用于String类型的 TableColumn
。
(the same error you have on runtime). The reason is the static callback forTableColumn
is only for TableColumn
of type String.
对于其他类型,您必须提供自定义字符串转换器。这将解决您的问题:
For other types you have to provide a custom string converter. This will solve your problems:
gel.setCellFactory(TextFieldTableCell.forTableColumn(new StringConverter<Integer>(){
@Override
public String toString(Integer object) {
return object.toString();
}
@Override
public Integer fromString(String string) {
return Integer.parseInt(string);
}
}));
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