我如何通过使用Intent从Android中的另一个常规活动中调用特定的选项卡活动

Question

I have 3 tabs (act1,act2,act3) and i have activities without tabs(A,B), if the user open activity A and press button OK then alarm will start and after 10 seconds it will go to act2

this all done, but i tried many thing :

1- when i go to act2 it does not display the tabs. just act2 activity

so i change the code and tried to : 2- when i go to activity tabs it show me the first tab(act1) but i wanna act2

how can i do it i wanna display act2 with tab

Give me any reference or hint.
Thanks in Advance.

Answer 1

Try this: Send an intent (via startActivity() as usual) to bring the activity to the front which contains the tabs. Send an extra parameter with the activity containing the TAG or some identifier for tab, you want to be opened. Evaluate the extra parameter in the activity, which contains the tab and let it switch to the tab as indicated by the parameter.

EDIT

To start the tab activity with a parameter:

final Intent i = new Intent(this, YourTabActivity.class);
i.putExtra(TAB_TAG, tag);  // TAB_ID see comment below, define some tags for the tabs
this.startActivity(i);

To extract the parameter from the intent:

Overwrite onNewIntent() in the tab activity and introduce a field lastIntent , set this.lastIntent = this.getIntent() there. (Otherwise you will always access the intent which started the activity in the first place, not the most recently sent intent!)

in onResume process the last intent:

final Bundle extras = this.lastIntent.getExtras();
final String tabTag = extras.getString(TAB_TAG);    // define the key TAB_TAG as static string

Now use tabTag to set the current tab.