Questions about the menu. Seeking help.

menu upload

Novice appear on the menu on learning a little problem.



When adding a submenu, click on "I have submenu" later, should show menu5, menu6, menu7, menu8.
Why he did not appear, nor error. Is a blank.

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Reply:
Because you should be wrong with the submenu, and you just click Show log
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Because you display the menu by registerForContextMenu (btn); while long press is public void call onCreateContextMenu this method, but you did not write this method inside the content of the sub-menus.
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cited a floor heaimnmn reply:

wrong because you should be using the submenu, and you just click Show log

Did not understand and can explain the specific write it?
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reference to the second floor u014635668 reply:

because you display the menu by registerForContextMenu (btn); while long press is public void call onCreateContextMenu this method, and you This method does not write the contents inside the submenu.

But I click on the menu of the menu simulator, with the press and that's okay ah. Press the function that can be achieved.
Reply:
Baidu's under MENU Detailed Explanation and SubMENU of it,
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references, 5th Floor heaimnmn reply:

Baidu's under MENU Detailed Explanation and SubMENU of it,

I also find some online code, paste up, up and running just do not display the sub-menu options.
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reference to the 6th floor u012301841 reply:

Quote: references, 5th Floor heaimnmn reply:

Baidu's under MENU Detailed Explanation and SubMENU of it,

I also find some online code, paste up, up and running just do not display the sub-menu options.

submenu it is SubMenu
Reply:
You can achieve long press, then it copied the contents public void onCreateContextMenu to onCreateOptionMenu sprinkled, long press can achieve that menu is the same spread, just the way the trigger menu is different.