iphone - 无法加载 UIViewController

Question

我是目标 C 的新手。我试图在单击按钮时从当前视图加载新视图，但是当我单击按钮时它执行代码但什么也不做，即不加载新的视图控制器。以下是我的代码...

- (void)zxingController:(ZXingWidgetController*)controller didScanResult:(NSString *)resultString {
[self dismissModalViewControllerAnimated:YES];

//Display QRCode in string....
NSLog(@"Result::::%@",resultString);

[_qrCodeParser initWithQRString:resultString];
int i=[_qrCodeParser parseQROCode];
sharedInstance=[SharedInstance sharedInstance];
NSLog(@"%@",sharedInstance._medicineData);
if (i==0) {
    _detailView= [[AlarmViewController alloc] initWithNibName:@"AlarmViewController" bundle:nil];
    [self presentViewController:_detailView animated:YES completion:nil];
}

}

Answer 1

尝试删除“dismissModalViewControllerAnimated”控制器行，如下所示：

- (void)zxingController:(ZXingWidgetController*)controller didScanResult:(NSString *)resultString {
//[self dismissModalViewControllerAnimated:YES];

//Display QRCode in string....
NSLog(@"Result::::%@",resultString);

[_qrCodeParser initWithQRString:resultString];
int i=[_qrCodeParser parseQROCode];
sharedInstance=[SharedInstance sharedInstance];
NSLog(@"%@",sharedInstance._medicineData);
if (i==0) 
{
    _detailView= [[AlarmViewController alloc] initWithNibName:@"AlarmViewController" bundle:nil];
    [self presentViewController:_detailView animated:YES completion:nil];
}


}

希望对您有所帮助。

干杯!