Objective c Ipad中带有“完成”按钮的UIPickerView
我曾经遇到过一个问题,就是在Ipad上用一个“完成”按钮显示UIPickerView。 我通过许多链接和博客做了详细的研究,得到的建议是“从UIActionSheet显示UIPickerView” 我看到了很多与此相关的帖子,但是没有很好的答案。所以请不要重复关闭它 此外,我还能够得到一些好的代码来做这件事,它在我的Iphone设备上运行良好。 然而,我在Ipad设备上发现了一个难题。 操作表未显示为完整视图。 请看下面的截图。这是结果 下面粘贴了用于执行此操作的代码Objective c Ipad中带有“完成”按钮的UIPickerView,objective-c,iphone,ipad,uipickerview,actionsheetpicker,Objective C,Iphone,Ipad,Uipickerview,Actionsheetpicker,我曾经遇到过一个问题,就是在Ipad上用一个“完成”按钮显示UIPickerView。 我通过许多链接和博客做了详细的研究,得到的建议是“从UIActionSheet显示UIPickerView” 我看到了很多与此相关的帖子,但是没有很好的答案。所以请不要重复关闭它 此外,我还能够得到一些好的代码来做这件事,它在我的Iphone设备上运行良好。 然而,我在Ipad设备上发现了一个难题。 操作表未显示为完整视图。 请看下面的截图。这是结果 下面粘贴了用于执行此操作的代码 UIActionShee
UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:nil
delegate:nil
cancelButtonTitle:nil
destructiveButtonTitle:nil
otherButtonTitles:nil];
[actionSheet setActionSheetStyle:UIActionSheetStyleBlackTranslucent];
CGRect pickerFrame = CGRectMake(0, 40, 0, 0);
UIPickerView *pickerView = [[UIPickerView alloc] initWithFrame:pickerFrame];
pickerView.showsSelectionIndicator = YES;
pickerView.dataSource = self;
pickerView.delegate = self;
[actionSheet addSubview:pickerView];
[pickerView release];
UISegmentedControl *closeButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObject:@"Close"]];
closeButton.momentary = YES;
closeButton.frame = CGRectMake(260, 7.0f, 50.0f, 30.0f);
closeButton.segmentedControlStyle = UISegmentedControlStyleBar;
closeButton.tintColor = [UIColor blackColor];
[closeButton addTarget:self action:@selector(dismissActionSheet:) forControlEvents:UIControlEventValueChanged];
[actionSheet addSubview:closeButton];
[closeButton release];
[actionSheet showInView:[[UIApplication sharedApplication] keyWindow]];
[actionSheet setBounds:CGRectMake(0, 0, 320, 485)];
然后我从github下载了一个优秀的示例应用程序
下载后,我将我必须的类复制到我的应用程序中
他们用来通过操作表显示UIPickerView+Done按钮的方法如下所述
ActionStringDoneBlock done = ^(ActionSheetStringPicker *picker, NSInteger selectedIndex, id selectedValue) {
if ([myLabel respondsToSelector:@selector(setText:)]) {
[myLabel performSelector:@selector(setText:) withObject:selectedValue];
}
};
ActionStringCancelBlock cancel = ^(ActionSheetStringPicker *picker) {
NSLog(@"Block Picker Canceled");
};
NSArray *colors = [NSArray arrayWithObjects:@"Red", @"Green", @"Blue", @"Orange", nil];//picker items to select
[ActionSheetStringPicker showPickerWithTitle:@"Select a Block" rows:colors initialSelection:0 doneBlock:done cancelBlock:cancel origin:myButton];
在最后一行代码中,他们将参数用作原点:,我们可以将任何对象(按钮、标签等)传递给它
操作表将以原点作为传递的对象
我的问题又来了:)。我已使用段控制根据我的条件选择时间
如果我将mySegment作为原点参数,操作表原点箭头将从我的段控件的中间显示。而不是从所选选项卡显示,这太糟糕了,会让我的有价值的用户感到困惑
因此,我在线段部分下添加了单独的标签,并将其作为上述方法的origin参数,我解决了我的问题
但我知道这不是个好办法:)
我可以知道有什么简单的方法吗
苹果是否支持Ipad中的ActionSheet+UIPickerView+DoneButton
在此问题上的任何帮助都将不胜感激
在选择器中使用UIPOPCovercontroller for done按钮,创建一个视图控制器类,在该类中获取选择器并添加导航取消和完成按钮
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:nextViewController];
_datePickerPopover = [[UIPopoverController alloc] initWithContentViewController:navigationController];
nextViewController.datePickerPopover = _datePickerPopover;
_datePickerPopover.delegate=self;
[_datePickerPopover setPopoverContentSize:CGSizeMake(320, 453) animated:NO];
if (isSearchOpen) {
[_datePickerPopover presentPopoverFromRect:CGRectMake(btn.frame.origin.x+10+245, btn.frame.origin.y+100-scrollPointY, 44, 44) inView:self.splitViewController.view permittedArrowDirections:UIPopoverArrowDirectionLeft animated:YES];
}
else
{
[_datePickerPopover presentPopoverFromRect:CGRectMake(btn.frame.origin.x+10+245, btn.frame.origin.y+55, 44, 44) inView:self.splitViewController.view permittedArrowDirections:UIPopoverArrowDirectionLeft animated:YES];//
}
在iPad中试用以下UIPicker视图代码
-(IBAction)tDriveBtnPressed:(id)sender
{
NSDateFormatter *df = [[NSDateFormatter alloc] init];
df.dateStyle = NSDateFormatterMediumStyle;
txtDate.text = [NSString stringWithFormat:@"%@",
[df stringFromDate:[NSDate date]]];
[df release];
UIToolbar *pickerToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 300, 44)];
pickerToolbar.barStyle = UIBarStyleBlackOpaque;
[pickerToolbar sizeToFit];
NSMutableArray *barItems = [[NSMutableArray alloc] init];
UIBarButtonItem *doneBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(pickerDone:)];
[barItems addObject:doneBtn];
[doneBtn release];
[pickerToolbar setItems:barItems animated:YES];
[barItems release];
datePicker = [[UIDatePicker alloc] init];
datePicker.datePickerMode = UIDatePickerModeDate;
CGRect pickerRect = datePicker.bounds;
datePicker.bounds = pickerRect;
UIViewController* popoverContent = [[UIViewController alloc] init];
UIView* popoverView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 344)];
popoverView.backgroundColor = [UIColor whiteColor];
datePicker.frame = CGRectMake(0, 44, 320, 300);
[datePicker addTarget:self action:@selector(dateChange:) forControlEvents:UIControlEventValueChanged];
[popoverView addSubview:pickerToolbar];
[popoverView addSubview:datePicker];
popoverContent.view = popoverView;
//resize the popover view shown
//in the current view to the view's size
popoverContent.contentSizeForViewInPopover = CGSizeMake(320, 244);
//create a popover controller
popoverController = [[UIPopoverController alloc] initWithContentViewController:popoverContent];
CGRect popoverRect = [self.view convertRect:[tDriveBtn frame]
fromView:[tDriveBtn superview]];
popoverRect.size.width = MIN(popoverRect.size.width, 100) ;
popoverRect.origin.x = popoverRect.origin.x;
// popoverRect.size.height = ;
[popoverController
presentPopoverFromRect:popoverRect
inView:self.view
permittedArrowDirections:UIPopoverArrowDirectionAny
animated:YES];
//release the popover content
[popoverView release];
[popoverContent release];
}
-(void)dateChange:(id)sender
{
NSDateFormatter *df = [[NSDateFormatter alloc] init];
df.dateStyle = NSDateFormatterMediumStyle;
txtDate.text= [NSString stringWithFormat:@"%@",
[df stringFromDate:datePicker.date]];
[df release];
}
- (void)pickerDone:(id)sender
{
NSDateFormatter *df = [[NSDateFormatter alloc] init];
df.dateStyle = NSDateFormatterMediumStyle;
txtDate.text= [NSString stringWithFormat:@"%@",
[df stringFromDate:datePicker.date]];
[df release];
if (popoverController != nil) {
[popoverController dismissPopoverAnimated:YES];
self.popoverController=nil;
}
}
您必须使用
UIPopOverController
首先,为iPhone创建UIPickerViewController。你需要它来做笔尖,笔尖会被推到popOver里。在视图中用选择器初始化选择器
h
然后,将viewWithPicker导入主类,创建一个按钮并执行以下操作:
- (IBAction) showPickerPopupAction:(id) sender {
self.viewWithPickerController = [[[ViewWithPickerController alloc] initWithNibName:@"ViewWithPicker" bundle:[NSBundle mainBundle]] autorelease];
viewWithPickerController.contentSizeForViewInPopover =
CGSizeMake(viewWithPickerController.view.frame.size.width, viewWithPickerController.view.frame.size.height);
viewWithPickerController.delegate = self;
self.popoverController = [[[UIPopoverController alloc]
initWithContentViewController:viewWithPickerController] autorelease];
[self.popoverController presentPopoverFromRect:popoverButtonForPicker.frame inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
popoverController.delegate = self;
}
并选择一个特定的值
- (void) viewWithPickerController:(ViewWithPickerController*) viewWithPickerController didSelectValue:(NSString*) value
{
yourLabel.text = [NSString stringWithFormat:@"%@ ",value];
}
查看我的答案,它在我的appiphone仅支持UIActivoSheet中工作。ipad只支持超控器。
- (IBAction) showPickerPopupAction:(id) sender {
self.viewWithPickerController = [[[ViewWithPickerController alloc] initWithNibName:@"ViewWithPicker" bundle:[NSBundle mainBundle]] autorelease];
viewWithPickerController.contentSizeForViewInPopover =
CGSizeMake(viewWithPickerController.view.frame.size.width, viewWithPickerController.view.frame.size.height);
viewWithPickerController.delegate = self;
self.popoverController = [[[UIPopoverController alloc]
initWithContentViewController:viewWithPickerController] autorelease];
[self.popoverController presentPopoverFromRect:popoverButtonForPicker.frame inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
popoverController.delegate = self;
}
- (void) viewWithPickerController:(ViewWithPickerController*) viewWithPickerController didSelectValue:(NSString*) value
{
yourLabel.text = [NSString stringWithFormat:@"%@ ",value];
}
-(void)viewDidload
{
UIButton *button1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
button1.frame = CGRectMake(165,165, 135,35);
[button1 setTitle:@"Type @" forState:UIControlStateNormal];
[button1 addTarget:self action:@selector(button1) forControlEvents:UIControlEventTouchUpInside];
[s addSubview:button1];
}
-(void)button1
{
items1 =[[NSMutableArray alloc]initWithObjects:@"H",@"E",@"T",@"K",nil];
myPickerView1 =[[UIPickerView alloc] initWithFrame:CGRectMake(60,80,200,300)];
myPickerView1.transform = CGAffineTransformMakeScale(0.75f, 0.75f);
myPickerView1.delegate = self;
myPickerView1.dataSource = self;
myPickerView1.showsSelectionIndicator = YES;
myPickerView1.backgroundColor = [UIColor clearColor];
myPickerView1.tag=1;
[myPickerView1 selectRow:1 inComponent:0 animated:YES];
[self.view addSubview:myPickerView1];
}
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView;
{
return 1;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component;
{
switch (pickerView.tag)
{
case 1:
return [items1 count];
break;
case 2:
return [items2 count];
break;
}
return 0;
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
switch (pickerView.tag)
{
case 1:
return[items1 objectAtIndex:row];
break;
case 2:
return[items2 objectAtIndex:row];
break;
}
return 0;
}
-(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
switch (pickerView.tag)
{
case 1:
{
[button1 setTitle:[items1 objectAtIndex:row] forState:UIControlStateNormal];
}
break;
case 2:
{
[button2 setTitle:[items2 objectAtIndex:row] forState:UIControlStateNormal];
}break;
}
pickerView.hidden = YES;
}