ios - 我们如何在选择段后调用 PickView 的 didSelectRow？

Question

我使用分段控件让用户在选择器 View 中选择一行后在两种类型的结果之间进行选择。但是，当我在 pickerview 中选择一行时，它会显示所选段的结果，但我选择另一个段时它不会执行任何操作，直到我再次重新选择该行。

这是我的代码:

- (void)pickerView:(UIPickerView *)thePickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component {

i=row;
switch (i) {
    case 0:


case 1
if(_segment.selectedSegmentIndex == 1){

        [self Fquarter];
        [self Tquarter];
        [self Ten];
        [self Twenty];
        [self Fourty];
        [self Fifty];


        NSLog(@"AUDIO 10 MINS");
        }

        if(_segment.selectedSegmentIndex == 0){

            [self SFquarter];
            [self STquarter];
            [self STen];
            [self STwenty];
            [self SFourty];
            [self SFifty];

             NSLog(@"Visual 10 MINS");
        }

每个案例都是这样，我错过了什么？

Answer 1

我认为您需要调用一个方法，该方法具有来自选取器委托(delegate)方法和分段控件的操作方法的所有 [self Fquarter] 等语句。像这样(pickerSelectedRow 是一个类型为 NSInteger 的属性):

@interface ViewController ()
@property (weak,nonatomic) IBOutlet UISegmentedControl *segment;
@property (nonatomic) NSInteger pickerSelectedRow;
@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)pickerView:(UIPickerView *)thePickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component {
    self.pickerSelectedRow = row;
    [self doStuff];

}

-(IBAction)segmentChosen:(UISegmentedControl *)sender {
    [self doStuff];
}


-(void)doStuff {
    switch (self.pickerSelectedRow) {
        case 0:

        case 1:
            if(_segment.selectedSegmentIndex == 1){

                [self Fquarter];
                [self Tquarter];
                [self Ten];
                [self Twenty];
                [self Fourty];
                [self Fifty];


                NSLog(@"AUDIO 10 MINS");
            }

            if(_segment.selectedSegmentIndex == 0){

                [self SFquarter];
                [self STquarter];
                [self STen];
                [self STwenty];
                [self SFourty];
                [self SFifty];

                NSLog(@"Visual 10 MINS");
            }


    }
}

With this type of arrangement, the method where you set your values is called either when the picker view value changes or the segmented control's value changes.