Flex 3 focusManager.getNextFocusManagerComponent() 返回 null
我有一个应用程序，我希望让 Enter 键像 Tab 键一样工作。 我可以轻松捕获按键事件并将焦点设置到文本输入字段。 问题是确定要关注哪个文本输入字段。 我有这段代码
trace(this.window.focusManager);
//returns TheWindow86.focusManager
trace(this.window.focusManager.getNextFocusManagerComponent());
//returns null
//This is what I was hoping would work
this.window.focusManager.getNextFocusManagerComponent().setFocus();
代码位于控制器类中，“this.window”引用了 nativeWindow mxml 文件“TheWindow.mxml”的实例。 第一个跟踪按预期工作，但第二个跟踪给出 null。 最后一行是我想要工作的代码。
I have an app where I am looking to make the enter key act like a tab key. I can easily capture the keypress event and setFocus to a textinput field. The problem is figuring out which textinput field to give focus to. I have this code
trace(this.window.focusManager);
//returns TheWindow86.focusManager
trace(this.window.focusManager.getNextFocusManagerComponent());
//returns null
//This is what I was hoping would work
this.window.focusManager.getNextFocusManagerComponent().setFocus();
The code is in a controller class and "this.window" references an instance of a nativeWindow mxml file "TheWindow.mxml". The first trace works as expected, but the second one gives null. The last line is the code that I am wanting to work.
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focusManager.moveFocus(FocusRequestDirection.FORWARD);
尝试一下;
focusManager.moveFocus(FocusRequestDirection.FORWARD);
try it;
我也有同样的问题。
很明显 - this.window.focusManager.getNextFocusManagerComponent().setFocus(); - 给你一个错误，因为 - this.window.focusManager.getNextFocusManagerComponent() - 返回 null。
我不明白为什么 focusManager 不知道接下来会出现什么组件......这就是问题所在。
I've got the same problem.
It's clear that - this.window.focusManager.getNextFocusManagerComponent().setFocus(); - gives to you en error because - this.window.focusManager.getNextFocusManagerComponent() - returns null.
I can't realize why focusManager doesn't know what component would come next... there is the problem.
如果 focusManager 是 mx.core.Application 的属性，则效果很好
works well if focusManager is a property of mx.core.Application
这似乎是一个错误。 我观察到它发生在设置了 defaultButtons 的表单周围。
It seems to be a bug. I have observed it occurs around forms with defaultButtons set.
你能尝试一下吗：
希望它有效...如果不让我知道，我会在 Flex 构建器中尝试它！
Can you try with:
Hope it works... if not let me know and I will try it in flex builder!