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关于self的一些疑惑
#import <UIKit/UIKit.h>
@interface Picking_Values_with_UIPickerViewViewController : UIViewController <UIPickerViewDataSource>
@property (nonatomic, strong) UIPickerView *myPicker;
@end
- (void)viewDidLoad{
[super viewDidLoad];
self.view.backgroundColor = [UIColor whiteColor];
self.myPicker = [[UIPickerView alloc] init];
self.myPicker.dataSource = self; //这句code该怎么理解?
self.myPicker.center = self.view.center;
[self.view addSubview:self.myPicker];
}
