我想实现其按字母顺序排序滚动列表。 作为参考,我使用附带的Eclipse IDE中提供的树屏样品。
我改变了的DataTemplate适合我的需要,直到要滚动它就像一个魅力。 整个UI被搞砸了,我不知道该怎么办。 我使用的是JRE 7.1和BlackBerry模拟器9860 7.0(我也测试了它的真实设备上)。
有谁知道这是一个已知的问题还是我错过了什么?
package lifeApp;
import net.rim.device.api.command.Command;
import net.rim.device.api.command.CommandHandler;
import net.rim.device.api.command.ReadOnlyCommandMetadata;
import net.rim.device.api.ui.DrawStyle;
import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.Manager;
import net.rim.device.api.ui.XYEdges;
import net.rim.device.api.ui.XYRect;
import net.rim.device.api.ui.component.Dialog;
import net.rim.device.api.ui.component.LabelField;
import net.rim.device.api.ui.component.SeparatorField;
import net.rim.device.api.ui.component.table.DataTemplate;
import net.rim.device.api.ui.component.table.RegionStyles;
import net.rim.device.api.ui.component.table.SortedTableModel;
import net.rim.device.api.ui.component.table.TableController;
import net.rim.device.api.ui.component.table.TableModel;
import net.rim.device.api.ui.component.table.TableView;
import net.rim.device.api.ui.component.table.TemplateColumnProperties;
import net.rim.device.api.ui.component.table.TemplateRowProperties;
import net.rim.device.api.ui.container.MainScreen;
import net.rim.device.api.ui.decor.Border;
import net.rim.device.api.ui.decor.BorderFactory;
import net.rim.device.api.util.StringComparator;
public class ProductsScreen extends MainScreen
{
private SortedTableModel _tableModel;
private static final int ROW_HEIGHT = 40;
public ProductsScreen()
{
super(Manager.NO_VERTICAL_SCROLL | Manager.HORIZONTAL_SCROLL);
setTitle("Alle Produkte A-Z");
add(new LabelField("BlackBerry Devices", LabelField.FIELD_HCENTER));
add(new SeparatorField());
_tableModel = new SortedTableModel(StringComparator.getInstance(true), 0);
_tableModel.addRow(new Object[] {"A", "Produkt1"});
_tableModel.addRow(new Object[] {"b", "Produkt2"});
_tableModel.addRow(new Object[] {"c", "Produkt3"});
_tableModel.addRow(new Object[] {"c", "Produkt4"});
_tableModel.addRow(new Object[] {"b", "Produkt5"});
_tableModel.addRow(new Object[] {"c", "Produkt6"});
_tableModel.addRow(new Object[] {"c", "Produkt7"});
_tableModel.addRow(new Object[] {"r", "Produkt8"});
_tableModel.addRow(new Object[] {"t", "Produkt9"});
_tableModel.addRow(new Object[] {"c", "Produkt10"});
_tableModel.addRow(new Object[] {"b", "Produkt11"});
_tableModel.addRow(new Object[] {"u", "Produkt12"});
_tableModel.addRow(new Object[] {"v", "Produkt13"});
_tableModel.addRow(new Object[] {"t", "Produkt14"});
_tableModel.addRow(new Object[] {"c", "Produkt15"});
_tableModel.addRow(new Object[] {"b", "Produkt16"});
_tableModel.addRow(new Object[] {"u", "Produkt17"});
_tableModel.addRow(new Object[] {"v", "Produkt18"});
RegionStyles style = new RegionStyles(BorderFactory.createSimpleBorder(new XYEdges(1, 1, 1, 1), Border.STYLE_SOLID), null, null,
null, RegionStyles.ALIGN_LEFT, RegionStyles.ALIGN_TOP);
TableView tableView = new TableView(_tableModel);
TableController tableController = new TableController(_tableModel, tableView);
tableController.setFocusPolicy(TableController.ROW_FOCUS);
tableController.setCommand(new Command(new CommandHandler()
{
public void execute(ReadOnlyCommandMetadata metadata, Object context)
{
Dialog.alert("Command Executed");
}
}));
tableView.setController(tableController);
DataTemplate dataTemplate = new DataTemplate(tableView, 1, 1)
{
/**
* @see DataTemplate#getDataFields(int)
*/
public Field[] getDataFields(int modelRowIndex)
{
final Object[] data = (Object[]) ((TableModel) getView().getModel()).getRow(modelRowIndex);
Field[] fields = new Field[1];
fields[0] = new LabelField((String)data[1], Field.USE_ALL_WIDTH | Field.FOCUSABLE | DrawStyle.HCENTER);
return fields;
}
};
dataTemplate.createRegion(new XYRect(0, 0, 1, 1), style);
dataTemplate.setColumnProperties(0, new TemplateColumnProperties(100, TemplateColumnProperties.PERCENTAGE_WIDTH));
dataTemplate.setRowProperties(0, new TemplateRowProperties(ROW_HEIGHT));
tableView.setDataTemplate(dataTemplate);
dataTemplate.useFixedHeight(true);
add(tableView);
}
}