做了个Android项目,出现下列错误,,,大仙们帮看看什么原因 本帖最后由 nupt_is 于 2012-05-17 17:27:39 编辑 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 空指针异常 MyExpandableListAdapter 这个 167 行 !自己瞧瞧 谢谢哥们儿哈找到问题了全局变量定义了 private Context mContext = null;(就是这儿) private boolean[] isOpen = null; private LayoutInflater mInflater = null; private ContactManager contactManager; private GroupManager groupManager; private int contactId; private List<Integer> contactCountByGroup; private List<String> groupItem = new ArrayList<String>(); private List<List<Contact>> contacts = new ArrayList<List<Contact>>();然后够着方法里赋值时有一组值忘记赋了 public MyExpandableListAdapter(List<Integer> contactCountByGroup, List<String> groupItem, List<List<Contact>> contacts, boolean[] isOpen, Context context) { this.contactCountByGroup = contactCountByGroup; this.groupItem = groupItem; this.contacts = contacts; this.isOpen = isOpen; this.mInflater = LayoutInflater.from(context); this.mContext=context;(就是这里) this.contactManager = new ContactManager(context); this.groupManager = new GroupManager(context); }所以下面用到时空指针异常。。 谢谢哥们儿哈找到问题了全局变量定义了 private Context mContext = null;(就是这儿) private boolean[] isOpen = null; private LayoutInflater mInflater = null; private ContactManager contactManager; private GroupManager groupManager; private int contactId; private List<Integer> contactCountByGroup; private List<String> groupItem = new ArrayList<String>(); private List<List<Contact>> contacts = new ArrayList<List<Contact>>();然后够着方法里赋值时有一组值忘记赋了 public MyExpandableListAdapter(List<Integer> contactCountByGroup, List<String> groupItem, List<List<Contact>> contacts, boolean[] isOpen, Context context) { this.contactCountByGroup = contactCountByGroup; this.groupItem = groupItem; this.contacts = contacts; this.isOpen = isOpen; this.mInflater = LayoutInflater.from(context); this.mContext=context;(就是这里)this.contactManager = new ContactManager(context); this.groupManager = new GroupManager(context); }所以下面用到时空指针异常。。 使用谷歌自带api无法准确定位问题 android应用在别的手机崩溃是什么问题呢 android 中 View 的层次问题 android访问自定义文件的问题 请问图片中的ListView的时间文本怎么用代码显示,和箭头图标用代码怎么设计,谢谢!!! android游戏来电中断处理 如和实现这样一个效果(透明悬浮) 2个线程用同一个Socket 可以同时接受么 fragment中使用viewPaper不显示数据内容 我是刚刚大一刚刚入门的学生,老师布置的作业搞不懂请教各位大神RecycleView中部分控件的显示和隐藏. 关于4.0全屏的问题,有人解决吗 从网站页面或的表格信息
谢谢哥们儿哈找到问题了全局变量定义了
private Context mContext = null;(就是这儿)
private boolean[] isOpen = null;
private LayoutInflater mInflater = null;
private ContactManager contactManager;
private GroupManager groupManager;
private int contactId;
private List<Integer> contactCountByGroup;
private List<String> groupItem = new ArrayList<String>();
private List<List<Contact>> contacts = new ArrayList<List<Contact>>();
然后够着方法里赋值时有一组值忘记赋了 public MyExpandableListAdapter(List<Integer> contactCountByGroup,
List<String> groupItem, List<List<Contact>> contacts,
boolean[] isOpen, Context context) { this.contactCountByGroup = contactCountByGroup;
this.groupItem = groupItem;
this.contacts = contacts;
this.isOpen = isOpen;
this.mInflater = LayoutInflater.from(context);
this.mContext=context;(就是这里)
this.contactManager = new ContactManager(context);
this.groupManager = new GroupManager(context); }
所以下面用到时空指针异常。。
private Context mContext = null;(就是这儿)
private boolean[] isOpen = null;
private LayoutInflater mInflater = null;
private ContactManager contactManager;
private GroupManager groupManager;
private int contactId;
private List<Integer> contactCountByGroup;
private List<String> groupItem = new ArrayList<String>();
private List<List<Contact>> contacts = new ArrayList<List<Contact>>();
然后够着方法里赋值时有一组值忘记赋了 public MyExpandableListAdapter(List<Integer> contactCountByGroup,
List<String> groupItem, List<List<Contact>> contacts,
boolean[] isOpen, Context context) { this.contactCountByGroup = contactCountByGroup;
this.groupItem = groupItem;
this.contacts = contacts;
this.isOpen = isOpen;
this.mInflater = LayoutInflater.from(context);
this.mContext=context;(就是这里)
this.contactManager = new ContactManager(context);
this.groupManager = new GroupManager(context); }
所以下面用到时空指针异常。。