小编J4C*_*-14的帖子

我正在努力让导航抽屉项目注册并开始和意图进行新的活动.抽屉打开正常并正确显示但是当我点击列表中的项目时没有任何反应.这是我从谷歌教程中获取的代码.

mTitle = mDrawerTitle = getTitle();
           mTitles = getResources().getStringArray(R.array.menu_items);
           mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
           mDrawerList = (ListView) findViewById(R.id.left_drawer);

           // set a custom shadow that overlays the main content when the drawer opens
           mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
           // set up the drawer's list view with items and click listener
           mDrawerList.setAdapter(new ArrayAdapter<String>(this,
                   R.layout.drawer_list_item, mTitles));
           mDrawerList.setOnItemClickListener(new DrawerItemClickListener());

           // enable ActionBar app icon to behave as action to toggle nav drawer
           getActionBar().setDisplayHomeAsUpEnabled(true);
           getActionBar().setHomeButtonEnabled(true);

           // ActionBarDrawerToggle ties together the the proper interactions
           // between the sliding drawer and …

我失去从我的变量时,我从一个转换它的前导零String到一Integer,

String[] parts = Firsttt.split(":");
String part1 = parts[0]; // Hour
String part2 = parts[1]; // Minute
Integer part1int = (Integer.valueOf(part1));
part1int++;
Firsttt = part1int +":"+ part2;

是否有正确的方法可以在不失去前导零的情况下执行此操作,或者我是否应该更改结果以再次包含零？

即: Firsttt = "0" + part1int +":"+ part2;

再次添加零的问题是变量并不总是包含零,所以只检查没有更好的方法.谢谢