java – Android – Tabs,MapView,选项卡内的活动

I see a lot of StackOverflow
questions/answers saying that due to
various limitations in the way the
TabHost is setup,it’s best NOT to use
activities as the content of tabs.

作为反职业联盟(AATA)的自主任主席,这当然是我的立场.

When an icon corresponding to a
Person,Place,or Event is clicked,it
fires off a VIEW Intent on a URI
corresponding to that object; this is
picked up by an Activity that then
shows the object.

请注意,这与将活动作为选项卡的内容无关.

We can launch a new activity to show
the map again,but now we have the map
activity as the content of the tab,
plus the show activity,plus the new
map activity in the activity stack;
given how resource intensive the map
activity is,I’m guessing this is not
the ideal way to go.

我可以避免它.

I’m worried that if we switch to the
View based way of doing things,we’ll
have to do a LOT of housekeeping to
intercept all the back events,try to
switch out the views,etc.,as
well as strongly coupling our program
in a way we don’t want.

这完全不符合你以前写过的内容.使用“视图”作为选项卡的内容并使用“活动”作为选项卡的内容,您的“后退事件”将不会更改iota.此外,这与您所描述的“松散耦合”模式无关,点击标签中视图中的列表中的图标与点击活动视图中的列表中的图标没有什么不同一个标签

只要让你的Show活动告诉你的主要活动来显示一个特定的位置,那么Show活动可以完成().在没有在活动之间引入硬JVM耦合的情况下,最简单的方法是广播Intent并在主要活动中注册BroadcastReceiver.收到此意图后,主要活动将更新地图并将其设置为当前选项卡.当然,如果您的主要活动使用其选项卡内容的视图,则此方法更为简单.

现在,如果您尝试检查您的应用程序,那么在选项卡中导航不会启动另一个活动,而是将内容保留在自己的选项卡中…这是一个完整的“水壶”.