（十一）Menu及其使用

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1、Menu的一级菜单与二级菜单的新建，以及单选与复选。值得一提，复选需要对状态进行手工设定

public boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);SubMenu sub1 = menu.addSubMenu(0, 1, 0, "您的性别是");SubMenu sub2 = menu.addSubMenu(0, 1, 0, "喜欢的书是");// SUB1sub1.setHeaderIcon(R.drawable.ic_launcher);sub1.setHeaderTitle("请选择您的性别");sub1.addSubMenu(0, FEMALE, 0, "女士");sub1.addSubMenu(0, MALE, 0, "男士");sub1.setGroupCheckable(0, true, true);// SUB2items[0] = sub2.add(1, Green, 0, book[0]).setCheckable(true);items[1] = sub2.add(1, RED, 0, book[1]).setCheckable(true);return true;}public boolean onOptionsItemSelected(MenuItem mi) {switch (mi.getItemId()) {case MALE:edittext.setText("您选择的是：男士");mi.setChecked(true);break;case FEMALE:edittext.setText("您选择的是：女士");mi.setChecked(true);break;case Green:if (mi.isChecked()) {mi.setChecked(false);} else {mi.setChecked(true);}break;case RED:if (mi.isChecked()) {mi.setChecked(false);} else {mi.setChecked(true);}break;}return true;}

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