如何将列值检索到iPhone中的另一个tableview中？

我对IOS非常熟悉，我的数据库中有存款表和费用表。我只想从存款表中检索存款金额，从费用表中检索费用金额，并将其分为两个表视图：一个是存款金额表视图，另一个是单屏费用金额表视图。下面是我的dbmodelclass.h

#import <UIKit/UIKit.h>
#import <sqlite3.h>
@interface dbModelClass : UIViewController
{
    NSMutableDictionary *readDic;
    NSMutableArray *readArray;
}
+(NSString *)connectDb;
+(BOOL)createTable;
+(BOOL)createTable3;
+(int)saveData:(NSMutableArray *)data;
+(int)saveData2:(NSMutableArray *)data;
+(NSMutableArray *)getData;
@end

这是我的

netviewcontroller.h

#import <UIKit/UIKit.h>
#import <sqlite3.h>
@interface dbModelClass : UIViewController
{
    NSMutableDictionary *readDic;
    NSMutableArray *readArray;
}
+(NSString *)connectDb;
+(BOOL)createTable;
+(BOOL)createTable3;
+(int)saveData:(NSMutableArray *)data;
+(int)saveData2:(NSMutableArray *)data;
+(NSMutableArray *)getData;
@end

#import <UIKit/UIKit.h>

@interface NetViewController : UIViewController<UITableViewDataSource,UITableViewDelegate>//DepositTable *depositCo
{
IBOutlet  UILabel *depositLabel,*expenseLabel,*netvalueLabel;
IBOutlet  UITextField *netvalueText;
IBOutlet UITableView *depositTable,*expenseTable;


}
@property (strong, nonatomic) UINavigationController *navigationController;
@property(strong,nonatomic)UILabel  *depositLabel,*expenseLabel,*netvalueLabel;
@property(strong,nonatomic)UITextField *netvalueText;
@property(strong,nonatomic)UITableView *depositTable,*expenseTable;



-(IBAction)netvalue:(id)sender;

@end

---

请帮帮我你做得不好：）

#import <UIKit/UIKit.h>
#import <sqlite3.h>
@interface dbModelClass : UIViewController
{
    NSMutableDictionary *readDic;
    NSMutableArray *readArray;
}
+(NSString *)connectDb;
+(BOOL)createTable;
+(BOOL)createTable3;
+(int)saveData:(NSMutableArray *)data;
+(int)saveData2:(NSMutableArray *)data;
+(NSMutableArray *)getData;
@end

为什么要创建继承自

UIViewController

的对象要管理数据库，只需创建继承自

NSObject

的对象即可

#import <UIKit/UIKit.h>
#import <sqlite3.h>
@interface dbModelClass : UIViewController
{
    NSMutableDictionary *readDic;
    NSMutableArray *readArray;
}
+(NSString *)connectDb;
+(BOOL)createTable;
+(BOOL)createTable3;
+(int)saveData:(NSMutableArray *)data;
+(int)saveData2:(NSMutableArray *)data;
+(NSMutableArray *)getData;
@end

在getData methode中，如果您只是为存款表请求数据，则应将参数（表名和金额）传递给methode，以了解您是希望从存款表还是expense2表获取数据

#import <UIKit/UIKit.h>
#import <sqlite3.h>
@interface dbModelClass : UIViewController
{
    NSMutableDictionary *readDic;
    NSMutableArray *readArray;
}
+(NSString *)connectDb;
+(BOOL)createTable;
+(BOOL)createTable3;
+(int)saveData:(NSMutableArray *)data;
+(int)saveData2:(NSMutableArray *)data;
+(NSMutableArray *)getData;
@end

最后，在NetViewController类中，您可以执行以下操作：

#import <UIKit/UIKit.h>
#import <sqlite3.h>
@interface dbModelClass : UIViewController
{
    NSMutableDictionary *readDic;
    NSMutableArray *readArray;
}
+(NSString *)connectDb;
+(BOOL)createTable;
+(BOOL)createTable3;
+(int)saveData:(NSMutableArray *)data;
+(int)saveData2:(NSMutableArray *)data;
+(NSMutableArray *)getData;
@end

#import <UIKit/UIKit.h>
#import <sqlite3.h>
@interface dbModelClass : UIViewController
{
    NSMutableDictionary *readDic;
    NSMutableArray *readArray;
}
+(NSString *)connectDb;
+(BOOL)createTable;
+(BOOL)createTable3;
+(int)saveData:(NSMutableArray *)data;
+(int)saveData2:(NSMutableArray *)data;
+(NSMutableArray *)getData;
@end

编辑答案：

#import <UIKit/UIKit.h>
#import <sqlite3.h>
@interface dbModelClass : UIViewController
{
    NSMutableDictionary *readDic;
    NSMutableArray *readArray;
}
+(NSString *)connectDb;
+(BOOL)createTable;
+(BOOL)createTable3;
+(int)saveData:(NSMutableArray *)data;
+(int)saveData2:(NSMutableArray *)data;
+(NSMutableArray *)getData;
@end

您可以这样做，例如：

#import <UIKit/UIKit.h>
#import <sqlite3.h>
@interface dbModelClass : UIViewController
{
    NSMutableDictionary *readDic;
    NSMutableArray *readArray;
}
+(NSString *)connectDb;
+(BOOL)createTable;
+(BOOL)createTable3;
+(int)saveData:(NSMutableArray *)data;
+(int)saveData2:(NSMutableArray *)data;
+(NSMutableArray *)getData;
@end

-(NSMutableArray *)getDataForTable:(NSString *)tableName withAmount:(NSString *)amountName
{
sqlite3 *dbobj;
NSString *dbpath  =[dbModelClass connectDb];
readArray=[[NSMutableArray alloc]init];
if(sqlite3_open([dbpath UTF8String], &dbobj)==SQLITE_OK)
{
    sqlite3_stmt *statement=nil;

    //**** NSString *string=@"SELECT name FROM emptable";

   NSString *string = [NSString stringWithFormat:@"SELECT *FROM %@ WHERE %@",tableName,amountName];

   const char *query=[string UTF8String];
    if(sqlite3_prepare_v2(dbobj, query, -1, &statement, NULL)==SQLITE_OK)
    {
        while (sqlite3_step(statement)==SQLITE_ROW)
        {
    readDic=[[NSMutableDictionary alloc] init];

            [readDic setObject:[NSString stringWithUTF8String:(char *)sqlite3_column_text(statement, 0)] forKey:@"deposit_amount"];
            // NSString *aName=[NSString stringWithUTF8String:(char *)sqlite3_column_text(statement, 0)];
            // NSString *pwd=[NSString stringWithUTF8String:(char *)sqlite3_column_text(statement, 1)];
            //[readDic setObject:[NSString stringWithUTF8String:(char *)sqlite3_column_text(statement, 1)] forKey:@"remarks"];
            //  [readArray addObject:aName];
            // [readArray1 addObject:pwd];
            [readArray addObject:readDic];
            // NSLog(@"%@",readDic);
        }
    }
    sqlite3_finalize(statement);
}

添加此

-（NSMutableArray*）getDataForTable:（NSString*）tableName with amount:（NSString*）amountName

在

dbModelClass.h

#import <UIKit/UIKit.h>
#import <sqlite3.h>
@interface dbModelClass : UIViewController
{
    NSMutableDictionary *readDic;
    NSMutableArray *readArray;
}
+(NSString *)connectDb;
+(BOOL)createTable;
+(BOOL)createTable3;
+(int)saveData:(NSMutableArray *)data;
+(int)saveData2:(NSMutableArray *)data;
+(NSMutableArray *)getData;
@end

现在，您可以在NetViewController中通过传递表名和金额来调用此方法：

#import <UIKit/UIKit.h>
#import <sqlite3.h>
@interface dbModelClass : UIViewController
{
    NSMutableDictionary *readDic;
    NSMutableArray *readArray;
}
+(NSString *)connectDb;
+(BOOL)createTable;
+(BOOL)createTable3;
+(int)saveData:(NSMutableArray *)data;
+(int)saveData2:(NSMutableArray *)data;
+(NSMutableArray *)getData;
@end

[dbModelClass connectDb];
NSArray * depositResult = [dbModelClass getDataWith:@"deposite" amountName:@"deposit_amount"];

//通过向另一个表传递适当的名称，对其执行相同的操作

#import <UIKit/UIKit.h>
#import <sqlite3.h>
@interface dbModelClass : UIViewController
{
    NSMutableDictionary *readDic;
    NSMutableArray *readArray;
}
+(NSString *)connectDb;
+(BOOL)createTable;
+(BOOL)createTable3;
+(int)saveData:(NSMutableArray *)data;
+(int)saveData2:(NSMutableArray *)data;
+(NSMutableArray *)getData;
@end

---

PS：这段代码没有经过测试，您应该重构它，它只是向您展示如何为方法传递参数

#import <UIKit/UIKit.h>
#import <sqlite3.h>
@interface dbModelClass : UIViewController
{
    NSMutableDictionary *readDic;
    NSMutableArray *readArray;
}
+(NSString *)connectDb;
+(BOOL)createTable;
+(BOOL)createTable3;
+(int)saveData:(NSMutableArray *)data;
+(int)saveData2:(NSMutableArray *)data;
+(NSMutableArray *)getData;
@end

最好的解决方案实际上是最简单的

#import <UIKit/UIKit.h>
#import <sqlite3.h>
@interface dbModelClass : UIViewController
{
    NSMutableDictionary *readDic;
    NSMutableArray *readArray;
}
+(NSString *)connectDb;
+(BOOL)createTable;
+(BOOL)createTable3;
+(int)saveData:(NSMutableArray *)data;
+(int)saveData2:(NSMutableArray *)data;
+(NSMutableArray *)getData;
@end

主视图控制器，带有两个嵌入式TableViewController，每个都显示和管理数据库中的一个表

#import <UIKit/UIKit.h>
#import <sqlite3.h>
@interface dbModelClass : UIViewController
{
    NSMutableDictionary *readDic;
    NSMutableArray *readArray;
}
+(NSString *)connectDb;
+(BOOL)createTable;
+(BOOL)createTable3;
+(int)saveData:(NSMutableArray *)data;
+(int)saveData2:(NSMutableArray *)data;
+(NSMutableArray *)getData;
@end

在viewDidLoad期间，您将创建每个tableViewController的实例，将其框架设置为位于主视图的所需坐标上，并将其添加到主视图中

#import <UIKit/UIKit.h>
#import <sqlite3.h>
@interface dbModelClass : UIViewController
{
    NSMutableDictionary *readDic;
    NSMutableArray *readArray;
}
+(NSString *)connectDb;
+(BOOL)createTable;
+(BOOL)createTable3;
+(int)saveData:(NSMutableArray *)data;
+(int)saveData2:(NSMutableArray *)data;
+(NSMutableArray *)getData;
@end

现在，您可以为每个表创建一个干净、简单的委托模型，如果您在主视图控制器中保持每个tableViewController的实例可用（分配为属性），您将能够从主视图与每个表通信

#import <UIKit/UIKit.h>
#import <sqlite3.h>
@interface dbModelClass : UIViewController
{
    NSMutableDictionary *readDic;
    NSMutableArray *readArray;
}
+(NSString *)connectDb;
+(BOOL)createTable;
+(BOOL)createTable3;
+(int)saveData:(NSMutableArray *)data;
+(int)saveData2:(NSMutableArray *)data;
+(NSMutableArray *)getData;
@end

---

更复杂的方法是向主视图xib添加两个tableView，将它们连接到主视图控制器中的datasource和delegate方法，然后测试对delegate方法的每次调用，以确定哪个tableView调用了该方法。我已经这样做了，但从长远来看，这是一个很难维护的问题。

实际上我对这一点非常陌生。在我们完成上述过程时，您能简单地解释一下吗？在这里发生了“选择器getDatawith的未知类方法：存款金额”异常存款金额是金额在dbModelClass中添加方法。h:-（NSMutableArray*）getDataForTable:（NSString*）tableName withAmount:（NSString*）amountNameYes已添加但即将发布，请SamirJi帮助我将该方法作为类方法，在dbModelClass.h和dbModelClass.mpease中用“+”替换“-”，请您一步一步地解释我，只有我知道我对该方法非常陌生

#import <UIKit/UIKit.h>
#import <sqlite3.h>
@interface dbModelClass : UIViewController
{
    NSMutableDictionary *readDic;
    NSMutableArray *readArray;
}
+(NSString *)connectDb;
+(BOOL)createTable;
+(BOOL)createTable3;
+(int)saveData:(NSMutableArray *)data;
+(int)saveData2:(NSMutableArray *)data;
+(NSMutableArray *)getData;
@end