UIPicker碰撞

Question

如果对象的UIPicker大于3，那么我的NSArray就会崩溃，有以下错误：

由于“NSInvalidArgumentException”异常终止应用程序，原因：-NSAutoreleasePool:titleForRow:forComponent: unrecognized发送到实例

下面是函数的代码：

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

  self.glassPickerOptions = [[NSArray alloc] initWithObjects:@"3mm",@"4mm",@"DG4+4",@"DG4+6",nil];
  [glassPicker setFrame:CGRectMake(0, 0, 320, 162)];
  [glassPicker selectRow:1 inComponent:0 animated:NO];
}

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

- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
    NSInteger glassPickerOptionsCount = self.glassPickerOptions.count;
    NSLog(@"%i", glassPickerOptionsCount);
    return glassPickerOptionsCount;
}

- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
    return (NSString*) [self.glassPickerOptions objectAtIndex:row];
}

希望我没漏掉任何东西。提前感谢

Answer 1

似乎您过度释放了您的选择器视图，您可以看到这一点，因为消息被发送到一个自动发布池，而不是您所期望的对象，您应该检查一下您的保存/释放，让您的选择器看到正在发生的事情，从发布的代码中无法真正判断……