我在viewDidLoad方法中编写了以下代码：
categoryPickerView=[[UIPickerView alloc]init]; categoryPickerView.alpha = 0; [self.view addSubview:categoryPickerView]; categoryPickerView.delegate=self; categoryPickerView.tag=1;
并称此方法隐藏选择器视图
- (IBAction)hidePickerView:(id)sender {
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.6];
CGAffineTransform transfrom = CGAffineTransformMakeTranslation(0,200);
categoryPickerView.transform = transfrom;
categoryPickerView.alpha = categoryPickerView.alpha * (-1) + 1;
[UIView commitAnimations];
}
我的问题是我想在选择器视图上显示一个“完成”按钮,并且选择器视图应该隐藏在按钮上.
解决方法
你可以使用这段代码,
UIToolbar *toolBar= [[UIToolbar alloc] initWithFrame:CGRectMake(0,320,44)];
[toolBar setBarStyle:UIBarStyleBlackOpaque];
UIBarButtonItem *barButtonDone = [[UIBarButtonItem alloc] initWithTitle:@"Done"
style:UIBarButtonItemStyleBordered target:self action:@selector(changeDateFromLabel:)];
toolBar.items = @[barButtonDone];
barButtonDone.tintColor=[UIColor blackColor];
[pickerView addSubview:toolBar];
//(or)pickerView.inputAccessoryView = toolBar;
并为changeDateFromLabel设置按钮操作方法：
-(void)changeDateFromLabel:(id)sender
{
[[your UI Element] resignFirstResponder];
}