警告从 TabActivity 中的 ActivityGroup 打开新 Activity
我有一个带有多个选项卡的选项卡活动。每个选项卡都有一个与其关联的 ActivityGroup，并使用 LocalActivityManager 来处理本地活动堆栈。尽管我还没有对其进行任何广泛的调试，但这一切似乎都工作正常。
我的一些活动需要打开顶部没有选项卡活动小部件的窗口。这对我来说似乎很简单，我像任何其他活动一样称呼它：
Intent i = new Intent(this, ActivityLeaveTabs.class);
startActivity(i);
说实话，一切似乎都很好，但是每次我离开选项卡活动时，我都会收到以下警告：
无法保存哪个视图具有焦点，因为焦点视图 com.android.internal.policy.impl.PhoneWindow$DecorView@43e4a3888 没有 id
我应该提到的是，我正在从作为其一部分的活动之一发送此意图一个 Activitygroup，它本身代表选项卡活动中的选项卡之一。我怀疑问题源于从那里调用“startActivity(this,...”，但我使用 getParent() 尝试了一系列变体，但这没有帮助。
我不太清楚警告的含义或是否是实际上是一个问题。任何解决警告的帮助或者如果有人可以告诉我不要担心它（该程序似乎工作得很好），将不胜感激！
I have a tabactivity with several tabs. Each tab has an ActivityGroup associated with it, and uses a LocalActivityManager to handle local activity stacks. This all seems to be working properly although I have not done any extensive debugging on it yet.
A few of my activities need to open windows which don't have the tabactivity widget at the top. This seemed straight forward enough to me and I called it like any other Activity:
Intent i = new Intent(this, ActivityLeaveTabs.class);
startActivity(i);
Everything seems to work just fine to be honest, however every time I leave the tabactivity I am getting the following warning:
couldn't save which view has the focus because the focused view com.android.internal.policy.impl.PhoneWindow$DecorView@43e4a3888 has no id
I should mention that I am sending this intent out from one of the activities which is part of an Activitygroup which itself represents one of the tabs from the tabactivity. I suspect the problem is stemming from calling "startActivity(this,..." from there, but I tried a bunch of variations using getParent() which did not help.
I am not exactly clear on what the warning means or if it is actually a problem. Any help resolving the warning or if anyone can tell me not to worry about it (the program seems to be working just fine) would be much appreciated!
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听起来这与当新活动出现时保持注意力有关。
这稍微阐明了这个问题；
DecorView包含 Activity 中的所有其他视图。通常没有理由让它有一个 id（尽管您可以通过编程方式设置一个）。由于背景是否具有焦点并不重要，因此我认为您可以安全地忽略此警告。一个有趣的测试是尝试通过按钮的 onClick 或其他需要让另一个视图获得焦点的东西来启动下一个活动，然后查看是否仍然收到警告。
It sounds like it has something to do with saving focus as a new activity comes to the front.
This sheds a little light on the issue; the
DecorViewcontains all the other views in your activity. There is not usually a reason for it to have an id (although you might be able to set one programmatically). Since it's not a big deal whether or not the background has focus, I think you can safely ignore this warning.An interesting test would be to try to launch your next activity via a button's
onClickor something else that would require having another view gain focus and then seeing if you still get the warning.