Google Glass gdk-menu

Let's talk about the menu in the Development of Google Glass gdk. (The last section is really JB rotten = This section is also in my opinion in the future, so I will write a little bit about it and wait until the technology is mature, and then I will come up with a complete set of tutorials !)

Let's take a look

 

Start :)

Remove the original topic first.

Remove Android: Theme From androidmanifest. XML, and edit our menu in RES/menu/Main. xml.

The glass menu has three options (in general): ID, title, and Icon (50x50 pixels white transparent background)

So our XML Code is as follows:

1 <menu xmlns: Android = "http://schemas.android.com/apk/res/android" 2 xmlns: Tools = "http://schemas.android.com/tools" 3 tools: context = "com. google. menutest. mainactivity "> 4 5 <Item 6 Android: Id =" @ + ID/action_play "7 Android: Title =" play "8 Android: icon = "@ drawable/ic_music_play_50" 9/> 10 <item11 Android: Id = "@ + ID/action_pause" 12 Android: Title = "Suspend" 13 Android: icon = "@ drawable/ic_music_pause_50" 14/> 15 <item16 Android: Id = "@ + ID/action_quit" 17 Android: title = "exit" 18/> 19 </menu>

OK, then we will write the menu Click Event in Java:

1 @ override 2 Public Boolean onoptionsitemselected (menuitem item) {3 Switch (item. getitemid () {4 case R. id. action_quit: 5 system. out. println ("exit the program! "); 6 system. Exit (0); 7 break; 8 case R. Id. action_play: 9 system. Out. println (" start playing! "); 10 break; 11 case R. Id. action_pause: 12 system. Out. println (" pause! "); 13 default: 14 break; 15} 16 return Super. onoptionsitemselected (item); 17}

That's easy to understand, right? It is not much different from Android, but the next step is the most important event-touchpad click event.

When the touchpad is clicked, a menu is displayed. We add an onkeydown event, which requires two parameters (INT keycode and keyevent ).

1     public boolean onKeyDown(int keyCode, KeyEvent keyEvent){2         if(keyCode == KeyEvent.KEYCODE_DPAD_CENTER){3             openOptionsMenu();4             return true;5         }6         return false;7     }

Keyevent. keycode_dpad_center is the ID of the touchpad click event. You haven't figured out what you want to do to the right, so I will talk about it later ~

It's okay. Let's start with the code.

1 @ override 2 protected void oncreate (bundle savedinstancestate) {3 super. oncreate (savedinstancestate); 4 // setcontentview (R. layout. activity_main); 5 card card1 = new card (this); 6 card1.setimagelayout (card. imagelayout. full); 7 card1.addimage (R. drawable. img2); 8 card1.settext ("caomud horse player"); 9 card1.setfootnote ("137rry"); 10 view = card1.getview (); 11 setcontentview (View); 12}