iphone - uialertview 不执行任何操作

Question

我必须使用两个按钮放置一个警报 View ，但这些按钮不会打开网址。我不知道错误。请帮忙。

代码如下:

-(IBAction)showAlertView {
UIAlertView *alert = [[UIAlertView alloc]
                      initWithTitle:@"Obrir en..."
                      message:@"Es pot requirir la aplicació de Google Maps"
                      delegate:self
                      cancelButtonTitle:@"Millor no..."
                      otherButtonTitles:@"Mapes",@"Google Maps",nil];
[alert show];
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
NSString *title = [alertView buttonTitleAtIndex:buttonIndex];

if([title isEqualToString:@"Mapes"])
{
    UIApplication *ourApplication = [UIApplication sharedApplication];
    NSString *ourPath = @"http://maps.apple.com/?q=Plaça+del+Rei+43003+Tarragona";
    NSURL *ourURL = [NSURL URLWithString:ourPath];
    [ourApplication openURL:ourURL];

}
if([title isEqualToString:@"Google Maps"])
{
    UIApplication *ourApplication = [UIApplication sharedApplication];
    NSString *ourPath = @"comgooglemaps://?daddr=Plaça+del+Rei+43003+Tarragona&directionsmode=walking";
    NSURL *ourURL = [NSURL URLWithString:ourPath];
    [ourApplication openURL:ourURL];
}
    }

Answer 1

您必须对 urlString 进行 url 编码，因为它包含一些特殊字符。

NSString *ourPath = @"http://maps.apple.com/?q=Plaça+del+Rei+43003+Tarragona";
ourPath=[ourPath stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];