Menu

按menu按钮弹出来的东西

public static final int ITEM0 = Menu.FIRST;
	public static final int ITEM1 = Menu.FIRST + 1;
/*
	 * menu.findItem(EXIT_ID);找到特定的MenuItem
	 * MenuItem.setIcon.可以设置menu按钮的背景
	 */
public boolean onCreateOptionsMenu(Menu menu) {
		super.onCreateOptionsMenu(menu);
//Menu.add(int groupId, int itemId, int order, CharSequence title)
		menu.add(0, ITEM0, 0, "显示button1");
		menu.add(0, ITEM1, 0, "显示button2");
		return true;
	}

	public boolean onOptionsItemSelected(MenuItem item) {
		switch (item.getItemId()) {
		case ITEM0:
			//do something
			break;
		case ITEM1:
			//do something
			break;

		}
		return super.onOptionsItemSelected(item);
	}