Set a Tab from an activity

问题

I have a TabActivity and inside 5 tabs with 5 activities each one. I want to set one of my tabs but not from the TabActivity(clicking on the tab on the top) but from an activity of any tab, for example clicking on a button of activity 3(which is asociated with the 3rd tab). In my TabActivity there is a variable mTabhost, which I can use to set the selected tab with

mTabHost.setCurrentTab(0);//home

I guess I need access to that variable from Activity1-2-3-4, and doing that variable static doesnt work.

回答1:

Say you have a MyTabActivity as TabActivity, which hosts 5 Activity(ies). If you want to change the Tabs inside SecondActivity, you would write the code something like this.

MyTabActivity myTabs = (MyTabActivity) this.getParent();

Here you have your MyTabActvity you can change the tabs like:

myTabs.getTabHost().setCurrentTab(index);

回答2:

Save this mHost var instance in singleton class say Utility class . Then access particular var from Utility Class in different activity and set it accordingly. It works. I 've used it in my several projects.

来源：https://stackoverflow.com/questions/6532455/set-a-tab-from-an-activity