我需要在toolbar
顶部添加带有完成按钮的UIPickerView
。我不想使用actionSheet
,因为我希望视图的其余部分处于活动状态。我已经去了以下代码:
- (BOOL)textFieldDidBeginEditing:(UITextField *)textField {
[txtstate resignFirstResponder];
pickerView = [[UIPickerView alloc]init] ;
pickerView.frame=CGRectMake(10, 75, 180,20);
pickerView.delegate = self;
pickerView.showsSelectionIndicator = YES;
UIToolbar* toolbar = [[UIToolbar alloc] init];
toolbar.frame=CGRectMake(0,75,180,10);
toolbar.barStyle = UIBarStyleBlackTranslucent;
UIBarButtonItem *flexibleSpaceLeft = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
UIBarButtonItem* doneButton = [[UIBarButtonItem alloc] initWithTitle:@"Done"
style:UIBarButtonItemStyleDone target:self
action:@selector(doneClicked:)];
[toolbar setItems:[NSArray arrayWithObjects:flexibleSpaceLeft, doneButton, nil]];
textField.inputAccessoryView = toolbar;
[pickerView addSubview:toolbar];
[self.view addSubview:pickerView];
}
通过使用上面的代码,我的工具栏被添加,但它被隐藏在UIPickerView
下,它被添加到中间。如何让工具栏出现在前面(在UIPickerView
的顶部)?
你可以使用这个getPicker
-(void)getValuePicker
{
ViewForValuePicker = [[UIView alloc]initWithFrame:CGRectMake(0, 219, 320, 266)];
UIToolbar *toolBar = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 320, 44)];
toolBar.barStyle = UIBarStyleBlackOpaque;
UIBarButtonItem *btn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(doneBtnPressToGetValue)];
[toolBar setItems:[NSArray arrayWithObject:btn]];
[ViewForValuePicker addSubview:toolBar];
valuePicker = [[UIPickerView alloc] initWithFrame:CGRectMake(0, 44, 320, 216)];
valuePicker.delegate=self;
valuePicker.dataSource=self;
valuePicker.showsSelectionIndicator=YES;
[ViewForValuePicker addSubview:valuePicker];
[appDelegate.window addSubview:ViewForValuePicker];
}
及其代表方法
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 1;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component;
{
return [pickerValueAry count];
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component;
{
NSMutableArray *ary = [[NSMutableArray alloc] initWithArray:pickerValueAry];
id str=[ary objectAtIndex:row];
return str;
}
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
NSLog(@"selectedRowInPicker >> %d",row);
}
你可以按照我的回答更多Link
有一种更简单的方法您可以将选择器作为文本字段的inputView插入,并将工具栏作为inputAccessoryView添加到textField,如:
textField.inputView = pickerView;
textField.inputAccessoryView = toolBar;
在viewDidLoad
中只需添加此代码,当textFieldBegin只更改框架时...
首先创建全局UIView用于后面的.h
文件中的日期选择器视图,如下面的..
UIView *viewPicker;
UIPickerView * pickerView;
然后像下面那样使用它..
- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField {
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.3];
viewPicker.frame = CGRectMake(0, 112, 320, viewPicker.frame.size.height);
[UIView commitAnimations];
return YES;
}
添加此波纹管代码...
viewPicker = [[UIView alloc]initWithFrame:CGRectMake(0, 480, 320, 258)];
UIToolbar* toolbar = [[UIToolbar alloc] init];
toolbar.frame=CGRectMake(0,0,320,44);
toolbar.barStyle = UIBarStyleBlackTranslucent;
UIBarButtonItem *flexibleSpaceLeft = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
UIBarButtonItem* doneButton = [[UIBarButtonItem alloc] initWithTitle:@"Done"
style:UIBarButtonItemStyleDone target:self
action:@selector(doneClicked:)];
[toolbar setItems:[NSArray arrayWithObjects:flexibleSpaceLeft, doneButton, nil]];
pickerView = [[UIPickerView alloc]init] ;
pickerView.frame=CGRectMake(0, 44, 320,216);
pickerView.delegate = self;
pickerView.showsSelectionIndicator = YES;
[viewPicker addSubview:pickerView];
[viewPicker addSubview:toolbar];
[self.view addSubview:viewPicker];
并在单击完成按钮时再次设置这样的框架..
-(IBAction)doneClicked:(id)sender
{
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.3];
viewPicker.frame = CGRectMake(0, 370, 320, 258);
[UIView commitAnimations];
}
我希望这能帮到你......
您可以尝试使用此代码:
- (BOOL)textFieldDidBeginEditing:(UITextField *)textField {
[textField resignFirstResponder];
UIView *view = [[UIView alloc]initWithFrame:CGRectMake(20, 100, 180, 260)];
pickerView = [[UIPickerView alloc]init] ;
pickerView.frame=CGRectMake(0, 44, 180,216);
pickerView.delegate = self;
pickerView.showsSelectionIndicator = YES;
UIToolbar* toolbar = [[UIToolbar alloc] init];
toolbar.frame=CGRectMake(0,0,180,44);
toolbar.barStyle = UIBarStyleBlackTranslucent;
UIBarButtonItem *flexibleSpaceLeft = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
UIBarButtonItem* doneButton = [[UIBarButtonItem alloc] initWithTitle:@"Done"
style:UIBarButtonItemStyleDone target:self
action:@selector(doneClicked:)];
[toolbar setItems:[NSArray arrayWithObjects:flexibleSpaceLeft, doneButton, nil]];
textField.inputAccessoryView = toolbar;
[view addSubview:toolbar];
[view addSubview:pickerView];
[self.view addSubview:view];
return YES;
}
你可以这样设置你的UIPickerView: -
-(void)showPicker{
menu = [[UIActionSheet alloc] initWithTitle:@"Select Time"
delegate:self
cancelButtonTitle:nil
destructiveButtonTitle:nil
otherButtonTitles:nil];
pickerView=[[UIPickerView alloc] init];
pickerView.frame= CGRectMake(0.0, 44.0, 0.0, 0.0);
pickerView.delegate=self;
pickerView.dataSource=self;
pickerView.showsSelectionIndicator = YES;
txtopsbox.inputView=pickerView;
dateTool = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
dateTool.barStyle=UIBarStyleBlackOpaque;
[dateTool sizeToFit];
NSMutableArray *barItems = [[NSMutableArray alloc] init];
UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(DatePickerDoneClick)];
[barItems addObject:flexSpace];
UIBarButtonItem *cancel = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:@selector(cancelClicked:)];
[barItems addObject:cancel];
[dateTool setItems:barItems animated:YES];
[menu addSubview:dateTool];
[menu addSubview:pickerView];
[menu showInView:self.view];
[menu setBounds:CGRectMake(0,0,320, 464)];
[pickerView release];
}
UPDATE
您也可以像其他方式一样: -
- (IBAction)showPicker
{
if(pickerVisible == NO)
{
// create the picker and add it to the view
if(self.datePicker == nil) self.datePicker = [[[UIDatePicker alloc] initWithFrame:CGRectMake(0, 460, 320, 216)] autorelease];
[self.datePicker setMaximumDate:[NSDate date]];
[self.datePicker setDatePickerMode:UIDatePickerModeDate];
[self.datePicker setHidden:NO];
[self.view addSubview:datePicker];
// the UIToolbar is referenced 'using self.datePickerToolbar'
[UIView beginAnimations:@"showDatepicker" context:nil];
// animate for 0.3 secs.
[UIView setAnimationDuration:0.3];
CGRect datepickerToolbarFrame = self.datePickerToolbar.frame;
datepickerToolbarFrame.origin.y -= (self.datePicker.frame.size.height + self.datePickerToolbar.frame.size.height);
self.datePickerToolbar.frame = datepickerToolbarFrame;
CGRect datepickerFrame = self.datePicker.frame;
datepickerFrame.origin.y -= (self.datePicker.frame.size.height + self.datePickerToolbar.frame.size.height);
self.datePicker.frame = datepickerFrame;
[UIView commitAnimations];
pickerVisible = YES;
}
}
- (IBAction)done
{
if(pickerVisible == YES)
{
[UIView beginAnimations:@"hideDatepicker" context:nil];
[UIView setAnimationDuration:0.3];
CGRect datepickerToolbarFrame = self.datePickerToolbar.frame;
datepickerToolbarFrame.origin.y += (self.datePicker.frame.size.height + self.datePickerToolbar.frame.size.height);
self.datePickerToolbar.frame = datepickerToolbarFrame;
CGRect datepickerFrame = self.datePicker.frame;
datepickerFrame.origin.y += (self.datePicker.frame.size.height + self.datePickerToolbar.frame.size.height);
self.datePicker.frame = datepickerFrame;
[UIView commitAnimations];
// remove the picker after the animation is finished
[self.datePicker performSelector:@selector(removeFromSuperview) withObject:nil afterDelay:0.3];
}
}