如何为 iOS 7 创建弹出式 uipicker 和 uitextfield?
Posted
技术标签:
【中文标题】如何为 iOS 7 创建弹出式 uipicker 和 uitextfield?【英文标题】:how to create a popup uipicker and uitextfield for iOS 7? 【发布时间】:2013-10-24 11:16:07 【问题描述】:我需要将选择器添加到我的文本框中,但不知道如何让它们工作。我已经阅读了许多教程,向您展示了如何从头开始,如果您有一个现有的应用程序并且您想要添加功能,这有点没用,在大多数情况下它们并不是很有帮助。
我正在寻找与下图非常相似的东西。下面显示的显然是一个UIDatepicker,但理想情况下
我正在寻找“地点”、“期限”和“门”的自定义选择器。
所以现在,跳过 UIDatepicker 项,专注于自定义选择器项。
还有一件事,这是 ios7,我正在使用 storyboards AND arc!
我遇到了这个 (http://www.youtube.com/watch?v=BtmQp5aP304),它确实很有帮助,但它又是从头开始。我不知道如何在我现有的代码中实现这一点。所以我正在寻找一个演练,一个有人可以指点我开始的教程。
*** 上有这个 -> how to pop up datePicker when text filed click and disappear when editing done
这给了我一些想法,但不完全是我想要的,尝试了这些建议并最终得到比其他任何东西都多的错误。
谢谢。
【问题讨论】:
【参考方案1】: @interface ViewController ()<UIPickerViewDataSource,UIPickerViewDelegate>
@implementation ViewController
UIPopoverController *popoverController;
NSString *currentPick;
….
.
.
.
-(void)makePicker
UIPickerView *picker = [[[UIPickerView alloc]init]autorelease];
picker.frame = CGRectMake(0, 50, 320, 1000);
picker.showsSelectionIndicator = YES;
picker.delegate = self;
UIButton *done = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[done setBackgroundImage:[UIImage imageNamed:@"Save.png"] forState:UIControlStateNormal];
[done setFrame:CGRectMake(260, 10, 50, 30)];
[done addTarget:self action:@selector(doneButton:) forControlEvents:UIControlEventTouchUpInside];
UIButton *cancel = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[cancel setBackgroundImage:[UIImage imageNamed:@"Cancel.png"] forState:UIControlStateNormal];
[cancel setFrame:CGRectMake(10, 10, 50, 30)];
[cancel addTarget:self action:@selector(cancelButton:) forControlEvents:UIControlEventTouchUpInside];
if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone)
UIActionSheet *pickerAction = [[[UIActionSheet alloc]initWithTitle:[cells objectAtIndex:indexPath.section] delegate:self cancelButtonTitle:nil destructiveButtonTitle:Nil otherButtonTitles:nil]autorelease];
[pickerAction addSubview:picker];
[pickerAction addSubview:done];
[pickerAction addSubview:cancel];
[pickerAction showInView:self.view];
pickerAction.frame = CGRectMake(0,[UIScreen mainScreen].bounds.size.height - 330,320, 350);
else
UIViewController* popoverContent = [[UIViewController alloc] init];
UIView* popoverView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 300)];
[popoverView addSubview:picker];
[popoverView addSubview:done];
[popoverView addSubview:cancel];
[popoverContent.view addSubview:popoverView];
popoverController = [[UIPopoverController alloc] initWithContentViewController:popoverContent];
[popoverController presentPopoverFromRect:<your frame> inView:self.view permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES];
popoverContent.contentSizeForViewInPopover = CGSizeMake(320, 260);
[popoverView release];
[popoverContent release];
.
.
.
// mainArray here is a NSArray of several arrays, these arrays contain the titles for different selections… e.g. @[fontArray,colourArray,nameArray]
-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
return [[mainArray objectAtIndex:clickedAt] count];
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
return 1;
-(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
return [[mainArray objectAtIndex:clickedAt] objectAtIndex:row];
-(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
currentPick = [[mainArray objectAtIndex:clickedAt] objectAtIndex:row];
- (void)doneButton:(UIButton *)button
if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone)
UIActionSheet *as = (UIActionSheet *)[button superview];
[as dismissWithClickedButtonIndex:0 animated:YES];
else
[popoverController dismissPopoverAnimated:YES];
// save your selections here using currentPick object
- (void)cancelButton:(UIButton *)button
if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone)
UIActionSheet *as = (UIActionSheet *)[button superview];
[as dismissWithClickedButtonIndex:0 animated:YES];
else
[popoverController dismissPopoverAnimated:YES];
享受你的选择器;)
【讨论】:
感谢您的回复。我知道在哪里添加委托视图(在 .h 文件中),但是“实现组件数量”?什么组件? -(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView numberOfComponentsInPickerView & numberOfRowsInComponent ..pickerView 委托的两个必需函数 太棒了。新手问题,那些应该去哪里?由于我们以编程方式执行此操作,所以我在这里有点迷路。你能再礼貌一点,回到你发布的代码,并在我的 viewcontroller.m 和 .h 文件中添加注释吗?记得 -> 新手...好吗?谢谢。 编辑了我的代码以便更好地理解,......而且我有“1”的声誉,先生,你不是新手:D【参考方案2】:勾选这个,制作一个全屏 UIView ,一个 UIImageView ,一个 UIPickerView 和两个 UIButtons (保存和取消)在.xib然后 在你的 .h 文件中创建他们的出口:
@property (retain, nonatomic) IBOutlet UIView *bg_view;
@property (retain, nonatomic) IBOutlet UIImageView *bg_customImageView;
@property (retain, nonatomic) IBOutlet UIPickerView *myPicker;
- (IBAction)cancelOut:(UIButton *)sender;
- (IBAction)saveOut:(UIButton *)sender;
@property (retain, nonatomic) IBOutlet UIButton *saveButton;
@property (retain, nonatomic) IBOutlet UIButton *cancelButton;
然后在 .m 文件中:
-(void)customPickerShow
[self.bg_view setBackgroundColor:[UIColor colorWithRed:0.3 green:0.25 blue:0.05 alpha:0.5]];
[self.bg_view setHidden:NO];
self.navigationController.toolbarHidden = YES;
self.navigationController.navigationBarHidden = YES;
[self showMyPicker];
-(void)showMyPicker
[self.myPicker reloadAllComponents];
[self animatePicker];
-(void)animatePicker
self.cancelButton.frame = CGRectMake((framewidth/2) - 130, frameheight, 70, 1);
self.saveButton.frame = CGRectMake((framewidth/2) + 60, frameheight, 70, 1);
self.bg_customImageView.frame = CGRectMake((framewidth/2) - 140, frameheight, 280, 1);
[UIView beginAnimations:Nil context:Nil];
[UIView setAnimationDuration:0.3];
[UIView setAnimationDelegate:self];
self.bg_customImageView.frame = CGRectMake((framewidth/2) - 150, frameheight - 230, 300, 300);
self.cancelButton.frame = CGRectMake((framewidth/2) - 130, frameheight - 220, 50, 50);
self.saveButton.frame = CGRectMake((framewidth/2) + 80, frameheight - 220, 50, 50);
[UIView commitAnimations];
- (IBAction)cancelOut:(UIButton *)sender
self.navigationController.navigationBarHidden = NO;
self.navigationController.toolbarHidden = NO;
[self.bg_view setHidden:YES];
- (IBAction)saveOut:(UIButton *)sender
// save here your selections
self.navigationController.navigationBarHidden = NO;
self.navigationController.toolbarHidden = NO;
[self.bg_view setHidden:YES];
调用这个 [self customPickerShow]; 函数使其工作..
这看起来像带有选择器和按钮的操作表。您可以使用您选择的背景图片和您选择的animatePicker函数中的框架
进行自定义不要忘记将此 bg_view 置于其他视图的顶部,并使其默认隐藏
【讨论】:
嗯,我正在使用故事板。【参考方案3】:纯粹使用 UIStoryboard 可能无法解决项目,或者不是最好的方法。这是我的解决方案。 1)创建一个自定义选择器 2)定义你的数据源和委托 3)将CustomPicker附加到目标TextField的inputView。 4)您可以在委托方法中进行设置 -(Bool)textFieldShouldBeginEditing:(UITextField *)textField
在这种方法中,我们通过编码(而不是通过 UIStoryboard)来添加 Picker。
我有this demo project 来表明这个目的。
【讨论】:
以上是关于如何为 iOS 7 创建弹出式 uipicker 和 uitextfield?的主要内容,如果未能解决你的问题,请参考以下文章