iPhone實例 底部出現時間選擇器是本文要介紹的內容，我們用iphone控件實現form表單時，有時需要添加時間控件，一般的做法是添加按鈕，點擊按鈕從底部出現時間選擇器。如下圖：

實現代碼：

#import "iphone_datapicketViewController.h"   
@implementation iphone_datapicketViewController   
@synthesize myDatePicker,myView;   
- (void)viewDidLoad {   
    [super viewDidLoad];   
}   
- (void)didReceiveMemoryWarning {   
    [super didReceiveMemoryWarning];   
}   
- (void)viewDidUnload {   
    self.myDatePicker =nil;   
    self.myView=nil;   
}   
- (void)dealloc {   
    [self.myDatePicker release];   
    [self.myView release];   
    [super dealloc];   
}   
-(IBAction)onClickButton:(id)sender   
{   
    [self showDatePick];   
}   
-(IBAction)onClickCloseButton:(id)sender   
{   
    [self dissDatePick];   
}   
-(void)showDatePick   
{   
    if (self.myView.superview == nil)   
    {   
        [self.view.window addSubview: self.myView];   
    }      
    CGRect screenRect = [[UIScreen mainScreen] applicationFrame];   
    CGSize pickerSize = [self.myView sizeThatFits:CGSizeZero];   
    CGRect startRect = CGRectMake(0.0,   
                                  screenRect.origin.y + screenRect.size.height,   
                                  pickerSize.width, pickerSize.height);   
    self.myView.frame = startRect;   
    CGRect pickerRect = CGRectMake(0.0,   
                                   screenRect.origin.y + screenRect.size.height – pickerSize.height,   
                                   pickerSize.width,   
                                   pickerSize.height);   
    [UIView beginAnimations:nil context:NULL];   
    [UIView setAnimationDuration:0.3];   
    [UIView setAnimationDelegate:self];   
    self.myView.frame = pickerRect;   
    CGRect newFrame = self.view.frame;   
    newFrame.size.height -= self.myView.frame.size.height;   
    self.view.frame = newFrame;   
    [UIView commitAnimations];   
}   
-(void)dissDatePick   
{   
    CGRect screenRect = [[UIScreen mainScreen] applicationFrame];   
    CGRect endFrame = self.myView.frame;   
    endFrame.origin.y = screenRect.origin.y + screenRect.size.height;   
    [UIView beginAnimations:nil context:NULL];   
    [UIView setAnimationDuration:0.3];   
    [UIView setAnimationDelegate:self];   
    self.myView.frame = endFrame;   
    [UIView commitAnimations];   
    CGRect newFrame = self.view.frame;   
    newFrame.size.height += self.myView.frame.size.height;   
    self.view.frame = newFrame;   
}   
@end 

還有利用ib創建控件和相連。

源代碼：http://easymorse-iphone.googlecode.com/svn/trunk/iphone.datapicket/

小結：iPhone實例 底部出現時間選擇器的內容介紹完了，希望本文對你有所幫助！