我正在创建一个自定义列表。在每一行中,我都有一个图像、一些文本字段和一个复选框。但我无法选中和取消选中该复选框。我已经浏览了这个链接,但无法解决我的问题。
这将在菜单中添加一个菜单项以更改复选框状态。我想要正常的复选框行为。请帮忙
这是我的代码
class CustomList extends ListField implements ListFieldCallback
{
public Vector rows;
private Bitmap p1;
int z = this.getRowHeight();
LabelField task,task2,task3;
CheckboxField checkbox[]= new CheckboxField[40];
int rowcount;
public CustomList(int rowcount,String text1,double text2,String type,Bitmap p)
{
super(0, ListField.MULTI_SELECT);
this.rowcount= rowcount;
setRowHeight(z*3);
setEmptyString("Hooray, no tasks here!", DrawStyle.HCENTER);
setCallback(this);
p1 = p;
rows = new Vector();
for (int x = 0; x < rowcount; x++)
{
checkbox[x]=new CheckboxField("",false,Field.USE_ALL_HEIGHT|Field.EDITABLE|Field.FIELD_VCENTER|Field.FOCUSABLE);
}
for (int x = 0; x < rowcount; x++)
{
TableRowManager row = new TableRowManager();
row.add(checkbox[x]);
row.add(new BitmapField(p1));
task= new LabelField("abc");
row.add(task);
task2=new LabelField("abc2");
row.add(task2);
task3= new LabelField("abc3");
row.add(task3);
rows.addElement(row);
}
setSize(rows.size());
}
public void drawListRow(ListField listField, Graphics g, int index, int y,int width)
{
CustomList list = (CustomList) listField;
TableRowManager rowManager = (TableRowManager) list.rows.elementAt(index);
rowManager.drawRow(g, 0, y, width, list.getRowHeight());
}
private class TableRowManager extends Manager
{
public TableRowManager()
{
super(0);
}
// Causes the fields within this row manager to be layed out then
// painted.
public void drawRow(Graphics g, int x, int y, int width, int height)
{
layout(width, height);
setPosition(x, y);
g.pushRegion(getExtent());
subpaint(g);
g.setColor(0x00CACACA);
g.popContext();
}
protected void sublayout(int width, int height)
{
// set the size and position of each field.
}
public int getPreferredWidth()
{
return UIConstants.SCREEN_WIDTH;
}
public int getPreferredHeight()
{
return getRowHeight();
}
}
}
我正在尝试使用复选框实现列表字段,并且我已经在知识库中看到了它的代码。
但我希望当我点击复选框时,它应该被选中或取消选中,当我点击行的其余部分时,即除了复选框之外的任何地方,那么如果不选中复选框,什么都不应该发生
我怎样才能做到这一点 ??或者我应该做点别的事情来做这件事..请建议..