Question

我有以下CLLocationManager委托的代码，当我在模拟器上测试它工作得很好，但是当我将它移植到我的ipad时，我得到了一个警告，应用程序冻结了。这是为什么？

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{


    UIAlertView *alert = [[UIAlertView alloc]
                          initWithTitle: @"Pinging GPS"
                          message: [NSString stringWithFormat: @"%@, %@",newLocation.coordinate.latitude,newLocation.coordinate.longitude]
                          delegate: nil
                          cancelButtonTitle:@"OK"
                          otherButtonTitles:nil];

    NSString * newAudioFile = [[NSBundle mainBundle] pathForResource:@"enter" ofType:@"mp3"];
    AVAudioPlayer * av = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:newAudioFile] error:NULL];
    [av play];
    [alert show];
    [alert release];

}

我得到的警告是：

warning: Unable to read symbols for /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.3.1 (8G4)/Symbols/Developer/usr/lib/libXcodeDebuggerSupport.dylib (file not found).

如果我删除了UIAlertView，它没有那个警告就可以正常工作

Answer 1

纬度和经度是双打，而不是字符串等：

[NSString stringWithFormat: @"%d, %d",newLocation.coordinate.latitude,newLocation.coordinate.longitude]

设备上的UIAlertView问题

1 个答案: