как взять данные из базы данных и показать UIPickerView

Question

Я извлечение данных из sqlite3, теперь мне нужно показать, что значения в UIPicker зрения, Может ли один помочь мне, пожалуйста,

Я получил ответ от данных как

stateName: (
     { 
     "state_name" = Alabama; 
    }, 
     { 
     "state_name" = Arizona; 
    }, 
     { 
     "state_name" = Arkansas; 
    }, 
     { 
     "state_name" = California; 
    }, 
     { 
     "state_name" = Colorado; 
    }, 
     { 
     "state_name" = Connecticut; 
    }, 
     { 
     "state_name" = Delaware; 
    }, 
     { 
     "state_name" = "District of Columbia"; 
    }, 
     { 
     "state_name" = Florida; 
    }, 
     { 
     "state_name" = Georgia; 
    }, 
     { 
     "state_name" = Idaho; 
    }, 
     { 
     "state_name" = Illinois; 
    }, 
     { 
     "state_name" = Indiana; 
    }, 
     { 
     "state_name" = Iowa; 
    }, 
     { 
     "state_name" = Kansas; 
    }, 
     { 
     "state_name" = Kentucky; 
    }, 
     { 
     "state_name" = Louisiana; 
    }, 
     { 
     "state_name" = Maine; 
    }, 
     { 
     "state_name" = Maryland; 
    }, 
     { 
     "state_name" = Massachusetts; 
    }, 
     { 
     "state_name" = Michigan; 
    }, 
     { 
     "state_name" = Minnesota; 
    }, 
     { 
     "state_name" = Mississippi; 
    }, 
     { 
     "state_name" = Missouri; 
    }, 
     { 
     "state_name" = Montana; 
    }, 
     { 
     "state_name" = Nebraska; 
    }, 
     { 
     "state_name" = Nevada; 
    }, 
     { 
     "state_name" = "New Hampshire"; 
    }, 
     { 
     "state_name" = "New Jersey"; 
    }, 
     { 
     "state_name" = "New Mexico"; 
    }, 
     { 
     "state_name" = "New York"; 
    }, 
     { 
     "state_name" = "North Carolina"; 
    }, 
     { 
     "state_name" = "North Dakota"; 
    }, 
     { 
     "state_name" = Ohio; 
    }, 
     { 
     "state_name" = Oklahoma; 
    }, 
     { 
     "state_name" = Oregon; 
    }, 
     { 
     "state_name" = Pennsylvania; 
    }, 
     { 
     "state_name" = "Rhode Island"; 
    }, 
     { 
     "state_name" = "South Carolina"; 
    }, 
     { 
     "state_name" = "South Dakota"; 
    }, 
     { 
     "state_name" = Tennessee; 
    }, 
     { 
     "state_name" = Texas; 
    }, 
     { 
     "state_name" = Utah; 
    }, 
     { 
     "state_name" = Vermont; 
    }, 
     { 
     "state_name" = Virginia; 
    }, 
     { 
     "state_name" = Washington; 
    }, 
     { 
     "state_name" = "West Virginia"; 
    }, 
     { 
     "state_name" = Wisconsin; 
    }, 
     { 
     "state_name" = Wyoming; 
    } 
) 

Answer 1

Существует метод делегата UIPickerView. #pragma mark - делегаты PickerView

-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView 
{ 
    return 1; 
} 

//===================================================================================== 
//Customize Number of rows in Component 
//===================================================================================== 
- (NSInteger)pickerView:(UIPickerView *)thePickerView numberOfRowsInComponent:(NSInteger)component { 

    if([genreList count] != 0) 
    { 
     return [genreList count]; 
    } 
    else 
    { 
     return 0; 
    } 
} 


//===================================================================================== 
//Set title For Row 
//===================================================================================== 
- (NSString *)pickerView:(UIPickerView *)thePickerView titleForRow:(NSInteger)row1 forComponent:(NSInteger)component { 

    if([genreList count] != 0) 
    { 
     return [genreList objectAtIndex:row1]; 
    } 
    else 
    { 
     return nil; 
    } 


    //return 4; 

}