源代码:

 

错误提示:

错误解决: 

while (cursor.moveToNext()){
            bean=new UserBean();
            int index=cursor.getColumnIndex("userName");
            bean.userName=cursor.getString(index);
            index=cursor.getColumnIndex("nickName");
            bean.nickName=cursor.getString(index);
            index=cursor.getColumnIndex("sex");
            bean.sex=cursor.getString(index);
            index=cursor.getColumnIndex("signature");
            bean.signature=cursor.getString(index);
        }

错误分析:

android更新是如此之快。

cursor.getString(index)方法要求index必须大于等于0

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