#import <Foundation/Foundation.h>
typedef enum {Uname
}DataType;
@interface MyDataManager : NSObject
+(NSArray *)getData:(DataType)type;
@end

#import "MyDataManager.h"
#import "FMDatabase.h"
#import "ViewModel.h"
@implementation MyDataManager
+(NSArray *)getData:(DataType)type{static FMDatabase *dataBase;//数据库管理对象NSMutableArray *array = [[NSMutableArray alloc]init];//判断dataBase是否为nilif (dataBase==nil) {//获取数据库文件路径NSString *path = [[NSBundle mainBundle]pathForResource:@"data" ofType:@"db"];//dataBase初始化dataBase=[[FMDatabase alloc]initWithPath:path];}//dataBase有个open方法，返回一个布尔值，判断是否打开成功if ([dataBase open]) {NSLog(@"dataBase open success");}else{NSLog(@"open failed");return array;//打开失败操作不再进行}//数据库查找，根据type查找不同语句，根据不同的type查询不同的表switch (type) {case Uname:{//数据库查询语句NSString *sql = @"select num,name FROM name";//查询结果的对象FMResultSet *rs = [dataBase executeQuery:sql];//FMResultSet对象有一个next方法，返回为1说明后面还有元素，遍历查询结果            while ([rs next]) {//创建一个数据模型的对象ViewModel *model = [[ViewModel alloc]init];//接收,根据不同数据类型用相应类型接收model.num=[NSString stringWithFormat:@"%d",[rs intForColumn:@"num"]];　　　　　　　　　　//因为此处model里的num为NSString类型，所以要用一个格式化字符串model.name=[rs stringForColumn:@"name"];//把结果加到数组中[array addObject:model];}}break;default:break;}return array;
}
@end

@property(nonatomic,copy)NSString *num;
@property(nonatomic,copy)NSString *name;

@property(nonatomic,copy)NSArray *dataArray;

_dataArray = [MyDataManager getData:Uname];

return _dataArray.count;

ViewModel *model = _dataArray[indexPath.row];
cell.textLabel.text = model.num;return cell;