When ActivityGroup is used, how does one save the Activity status and use the Menu of the Child Activity?

Reprinted from: http://blog.csdn.net/feng88724

 

Many friends think that TabHost has too many restrictions and has little room for use. Therefore, ActivityGroup is used to replace TabHost.

 

However, when ActivityGroup is used, many friends may also encounter problems in the title.

 

The following describes the solution.

 

1. How do I save the Activity status when ActivityGroup is used?

In fact, it is very easy to load the Activity as follows.

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1. GetLocalActivityManager (). startActivity ("XXX", new Intent (this, XXX. class). getDecorView ()

So how can we prevent ActivityGroup from saving the status of the sub-Activity? That is, when switching, it is destroyed directly.

In fact, you only need to add a Flag: Intent. FLAG_ACTIVITY_CLEAR_TOP, as shown below:

 

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1. GetLocalActivityManager (). startActivity ("YYY", new Intent (this, YYY. class). addFlags (Intent. FLAG_ACTIVITY_CLEAR_TOP). getDecorView ()

2. How do I use the Menu of a sub-Activity when ActivityGroup is used?

In fact, it is also very simple, as long as in the class inheriting ActivityGroup

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1. @ Override
2. Public boolean onKeyUp (int keyCode, KeyEvent event ){
3. If (keyCode = KeyEvent. KEYCODE_MENU ){
5. This. getLocalActivityManager (). getCurrentActivity (). openOptionsMenu ();
7. }
8. Return super. onKeyDown (keyCode, event );
9. }

Both onkeyDown and onkeyUp are supported!