我正在尝试配置一个双组件选择器，但遇到了一些我已注释掉的错误:执行文件:#import"BIDDoubleComponentPickerViewController.h"@implementationBIDDoubleComponentPickerViewController@synthesizedoublePicker;@synthesizefillingTypes;@synthesizebreadTypes;-(IBAction)buttonPressed:(id)sender{NSIntegerfillingRow=[doublePickerselectedRowInCompon