利用ios的UIActionSheet + UIDatePicker + UIToolBar 来实现弹出时间选择控件
//在iphone中没有点击弹出选择时间的控件，下面就利用ios的UIActionSheet + UIDatePicker + UIToolBar 来实现弹出时间选择控件。代码如下：
1 UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:nil delegate:nil cancelButtonTitle:@"取消" destructiveButtonTitle:nil otherButtonTitles:nil, nil];
2
3 UIDatePicker *datePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(0.0f, 44.0f, 0.0f, 0.0f)];
4 [datePicker setDate:[NSDate date]]; //显示当前时间
5 [datePicker setUserInteractionEnabled:YES]; //
6 datePicker.datePickerMode = UIDatePickerModeTime; //模式：显示时间
7
8 UIToolbar *pickerDateToolBar = [[UIToolbar alloc] initWithFrame:CGRectMake(0.0f, 0.0f, self.view.bounds.size.width, 44)]; //创建工具条，用来设置或者退出actionsheet.
9 pickerDateToolBar.barStyle = UIBarStyleBlackOpaque;
10 [pickerDateToolBar sizeToFit];
11
12 NSMutableArray *barItems = [[NSMutableArray alloc] init];
13
14 UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
15 [barItems addObject:flexSpace];
16 UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"Cancel", nil) style:UIBarButtonSystemItemCancel target:self action:@selector(datePickerCancelClick:)];
17 [barItems addObject:cancelButton];
18 UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"OK", nil) style:UIBarButtonItemStyleDone target:self action:@selector(datePickerDoneClick:)];
19 // UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(datePickerDoneClick:)];
20 [barItems addObject:doneButton];
21
22 [pickerDateToolBar setItems:barItems animated:YES]; //将按键加入toolbar
23
24 UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(20.0f, 11.0f, 100.0f, 22.0f)];
25 label.text = NSLocalizedString(@"SetTimeLabel", nil);
26 label.backgroundColor = [UIColor clearColor];
27 label.textColor = [UIColor whiteColor];
28 [label sizeToFit];
29 [pickerDateToolBar addSubview:label];
30
31 [actionSheet addSubview:pickerDateToolBar];
32 [actionSheet addSubview:datePicker];
33 // [actionSheet setBounds:CGRectMake(0.0f, 0.0f, self.view.bounds.size.width, 260)];
34 [actionSheet showInView: [UIApplication sharedApplication].keyWindow]; //这里使用全局的键盘的view，可以避免在有tabBar或者toolBar的页面，把actionSheet下方挡住。
35 // [actionSheet setBounds:CGRectMake(0.0f, 0.0f, self.view.bounds.size.width, 260)];
