UIDatePicker无故崩溃

Question

I have set UIDatePicker in a cocos2d scene. (hope its right) Its working great till the moment i have to pick a date, so i roll the picker and then the moment it stops, it crashes, and it doesnt even call the picker method.

CGRect pickerFrame = CGRectMake(0,250,0,0);

UIDatePicker *myPicker = [[UIDatePicker alloc] initWithFrame:pickerFrame];
[myPicker addTarget:self action:@selector(pickerChanged:) 
        forControlEvents:UIControlEventValueChanged];

//[self.view addSubview:myPicker];
[[[CCDirector sharedDirector] view] addSubview:myPicker];
[myPicker release];


- (void)pickerChanged:(id)sender
{
    NSLog(@"value: %@",[sender date]);

}

btw did i add the picker to the cocos2d scene correctly?

Answer 1

当选择器尝试调用您的方法时，它崩溃，但是目标（ self ）可能已被释放，因此您应该获得EXC_BAD_ACCESS。

Answer 2

date is a property not a function ... sender is a DatePicker in this case. The code below should work!

-(void)pickerChanged:(UIDatePicker*) datePicker{
    NSLog(@"value: %@",datePicker.date);
}