我搜索它并没有找到正确的答案。有人说检查器选项卡中组件的排列使自动选项卡索引。但它没有用。那么netbeans中真的有tab属性吗?
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11003 次
5 回答
4
只需使用这段代码就可以了,使用setNextFocusableComponent ()
buttonA.setNextFocusableComponent(buttonB);
buttonB.setNextFocusableComponent(buttonC);
于 2013-01-02T11:39:46.550 回答
2
我打算对 Yogendra Singh 的回答发表评论,但我才刚刚注册并且不能。Yogendra 的答案几乎是完美的,但没有考虑到如果有人通过单击另一个组件来改变焦点会发生什么。focusNumber 仍将设置为旧组件,并且按 Tab 会将您带到错误的组件。
修改答案稍微修复了这个问题:
List<Component> elementList = new ArrayList<Component>();
elementList.Add(element1);
elementList.Add(element2);
...
elementList.Add(elementx);
setFocusTraversalPolicy(new CustomFocusTraversalPolicy());
private class CustomFocusTraversalPolicy extends FocusTraversalPolicy {
public Component getComponentAfter(Container focusCycleRoot,Component aComponent) {
int currentPosition = elementList.indexOf(aComponent);
currentPosition = (currentPosition + 1) % elementList.size();
return (Component)elementList.get(currentPosition);
}
public Component getComponentBefore(Container focusCycleRoot,Component aComponent) {
int currentPosition = elementList.indexOf(aComponent);
currentPosition = (elementList.size() + currentPosition - 1) % elementList.size();
return (Component)elementList.get(currentPosition);
}
public Component getFirstComponent(Container cntnr) {
return (Component)elementList.get(0);
}
public Component getLastComponent(Container cntnr) {
return (Component)elementList.get(focusList.size() - 1);
}
public Component getDefaultComponent(Container cntnr) {
return (Component)elementList.get(0);
}
}
于 2014-05-17T09:52:39.467 回答
1
定义以保存您的元素,使用例如以所需的顺序Component[] elementsList
扩展FocusTraversalPolicy
和设置元素 elementsList
Component[] elementsList = new Component[]{elem1,elem2,elem3};
setFocusTraversalPolicy(new MyFocusTraversalPolicy());
public class CustomFocusTraversalPolicy extends FocusTraversalPolicy {
public Component getComponentAfter(Container focusCycleRoot,Component aComponent) {
focusNumber = (focusNumber+1) % focusList.length;
return (JTextField)focusList[focusNumber];
}
public Component getComponentBefore(Container focusCycleRoot,Component aComponent) {
focusNumber = (focusList.length+focusNumber-1) % focusList.length;
return (JTextField)focusList[focusNumber];
}
}
于 2012-10-18T06:17:43.870 回答
1
GUI 编辑器在 initComponents 中生成代码:
jTabbedPane1.addTab("tab1", jTextField1);
这似乎不是可定制的,使用insertTab
带有索引。(它会显示在布局组的属性中。)
所以最好是完全在代码中生成选项卡组件,使用,insertTab
或者:
jTabbedPane1.add(jTextField1, index);
于 2012-10-18T13:29:47.133 回答
0
我猜 Mike Plazer NZ 的答案有一个小错误。
public Component getLastComponent(Container cntnr) {
return (Component)elementList.get(focusList.size() - 1);
}
应该
public Component getLastComponent(Container cntnr) {
return (Component)elementList.get(elementList.size() - 1);
}
“focusList.size()”改为“elementList.size()”
否则eclipse会显示错误。但是一个很好的答案!
于 2016-02-13T18:23:02.083 回答