Android ActivityGroup Menu Problem

问题:

I have one problem using ActivityGroup. I have two activities inside an ActivityGroup and both of them use a menu (overriding the onCreateOptionMenu and onOptionsItemSelected).

Well, the problem is that the second activity in the group doesn't show the menu when I press the menu Key. The first activity works fine showing the menu.

Any idea about this issue?

I have this code in child activity:

    @Override
public boolean onCreateOptionsMenu(Menu menu) {
    boolean result = super.onCreateOptionsMenu(menu);
    menu.add(0, MENU_REFRESH, 0, R.string.menu_refresh).setIcon(R.drawable.ic_menu_refresh);
    return result;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case MENU_REFRESH:
        Log.d(TAG,"REFRESH");
        refresh();
        return true;
    }
    return super.onOptionsItemSelected(item);
}

回答1:

Check this thread.

Menu's can be handled in the parent aactivity, but created in the child activity

回答2:

Another nice way of handling this is by using the ActivityGroup's LocalActivityManager. Get the local activity manager, get the current activity, and perform that activity's appropriate method:

public boolean onPrepareOptionsMenu(Menu menu) {
    //super.onPrepareOptionsMenu(menu);
    return getLocalActivityManager().getCurrentActivity()
        .onCreateOptionsMenu(menu);
}

public boolean onCreateOptionsMenu(Menu menu) {
    //super.onCreateOptionsMenu(menu);
    return getLocalActivityManager().getCurrentActivity()
        .onCreateOptionsMenu(menu);
}

public boolean onMenuItemSelected(int featureId, MenuItem item) {
    //super.onMenuItemSelected(featureId, item);
    return getLocalActivityManager().getCurrentActivity()
        .onMenuItemSelected(featureId, item);
}

Note: using this strategy, you must not call super.onCreateOptionsMenu from the child activity- doing so causes a stack overflow exception. I'm not sure what the purpose of calling the superclass's on* methods, as I've omitted them and have seen no negative results. (... yet)

回答3:

You need to override the menu methods in the activity group, and call the corresponding methods on the child activity. See this article: How to Create Options Menu on Child Activity inside an ActivityGroup

public class TestGroup extends ActivityGroup {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        //start child activity
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        return getLocalActivityManager().getCurrentActivity().onCreateOptionsMenu(menu);
    }

    @Override
    public boolean onMenuItemSelected(int featureId, MenuItem item) {
        return getLocalActivityManager().getCurrentActivity().onMenuItemSelected(featureId, item);
    }
}

回答4:

use this code on the tabGroupActivity

@Override
public boolean onCreateOptionsMenu(Menu menu) 
{
    // TODO Auto-generated method stub


    return  getLocalActivityManager().getCurrentActivity().onCreateOptionsMenu(menu);
}

@Override
public boolean onMenuItemSelected(int featureId, MenuItem item) {
    // TODO Auto-generated method stub
    return getLocalActivityManager().getCurrentActivity().onMenuItemSelected(featureId, item);
}

use the code which given below in both 2 child Activities

@Override
public boolean onCreateOptionsMenu(Menu menu) {

    getMenuInflater().inflate(R.menu.menu_1, menu);
    return true;
}// menu_1 is the xml file in menu folder
@Override
public boolean onMenuItemSelected(int featureId, MenuItem item) {

    switch (item.getItemId()) {
    case R.id.weekly:
        Intent weekly = new Intent(getParent(),Activity1.class);
        TabGroupActivity parentActivity = (TabGroupActivity)getParent();
        parentActivity.startChildActivity("weeklyview", weekly);

        break;

    case R.id.daily :
        Intent daily = new Intent(getParent(),Activity2.class);
        TabGroupActivity parentActivity2 = (TabGroupActivity)getParent();
        parentActivity2.startChildActivity("daily", daily);
        break;

    default:
        break;
    }

    //use return true
return true;
}

回答5:

Yet another approach is to create the menu in the ActivityGroup root and then use public boolean onPrepareOptionsMenu(Menu menu) to clear and re-add menu items.

In ActivityGroup class:

@Override
public boolean onCreateOptionsMenu(Menu menu)
{
    //what is the current activity?
    menu.add(0, 0, 0, "holder");
    return true;
}

@Override
public boolean onPrepareOptionsMenu(Menu menu)
{
    //start a new
    menu.clear();
    //add some menu options
    .getLocalActivityManager().getCurrentActivity().onPrepareOptionsMenu(menu);
    return super.onPrepareOptionsMenu(menu);
}

In Activity:

@Override
public boolean onPrepareOptionsMenu(Menu menu)
{ //add menus or inflate here
    return true;
}