[英]UIPickerView with DONE button
I have a UIPickerView in my application, and I want to have a done button on it to hide the picker. 我的应用程序中有一个UIPickerView ,我想在它上面有一个完成按钮来隐藏选择器。
I don't want to use an action sheet because I want focus on the rest of the view.i mean all the view has to be active. 我不想使用操作表,因为我希望专注于视图的其余部分。我的意思是所有视图都必须是活动的。
Here is how I create the picker: 以下是我创建选择器的方法:
UIPickerView *pickerViewCountry = [[UIPickerView alloc] init];
pickerViewCountry.showsSelectionIndicator = YES;
pickerViewCountry.dataSource = self;
pickerViewCountry.delegate = self;
pickerViewCountry.frame = CGRectMake(0,210 , 320, 15);
[self.view addSubview:pickerViewCountry];
[pickerViewCountry release];
try out the custom picker make with action sheet 尝试使用操作表自定义选择器
UIActionSheet *actionSheet;
NSString *pickerType;
-(IBAction)BtnPressed:(id)sender
{
[self createActionSheet];
pickerType = @"picker";
select = NO;
UIPickerView *chPicker = [[UIPickerView alloc] initWithFrame:CGRectMake(0.0, 44.0, 0.0, 0.0)];
chPicker.dataSource = self;
chPicker.delegate = self;
chPicker.showsSelectionIndicator = YES;
[actionSheet addSubview:chPicker];
sessoTxt.text = [sessoArray objectAtIndex:0];
[chPicker release];
}
- (void)createActionSheet {
if (actionSheet == nil) {
// setup actionsheet to contain the UIPicker
actionSheet = [[UIActionSheet alloc] initWithTitle:@"Select"
delegate:self
cancelButtonTitle:nil
destructiveButtonTitle:nil
otherButtonTitles:nil];
UIToolbar *pickerToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
pickerToolbar.barStyle = UIBarStyleBlackOpaque;
[pickerToolbar sizeToFit];
NSMutableArray *barItems = [[NSMutableArray alloc] init];
UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
[barItems addObject:flexSpace];
[flexSpace release];
UIBarButtonItem *doneBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(pickerDone:)];
[barItems addObject:doneBtn];
[doneBtn release];
[pickerToolbar setItems:barItems animated:YES];
[barItems release];
[actionSheet addSubview:pickerToolbar];
[pickerToolbar release];
[actionSheet showInView:self.view];
[actionSheet setBounds:CGRectMake(0,0,320, 464)];
}
}
#pragma mark UIPickerViewDelegate Methods
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView {
return 1;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
int count;
if ([pickerType isEqualToString:@"picker"])
count = [array count];
return count;
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
NSString *string;
if ([pickerType isEqualToString:@"picker"])
string = [array objectAtIndex:row];
return string;
}
// Set the width of the component inside the picker
- (CGFloat)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component {
return 300;
}
// Item picked
- (void)pickerView:(UIPickerView *)thePickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component {
select = YES;
if ([pickerType isEqualToString:@"picker"])
{
Txt.text = [array objectAtIndex:row];
}
}
- (void)pickerDone:(id)sender
{
if(select == NO)
{
if ([pickerType isEqualToString:@"picker"])
{
Txt.text = [array objectAtIndex:0];
}
}
[actionSheet dismissWithClickedButtonIndex:0 animated:YES];
[actionSheet release];
actionSheet = nil;
}
}
You can add a toolbar to a UIPickerView
like this: 您可以将工具栏添加到UIPickerView
如下所示:
// initiaize picker view
UIPickerView *pickerView=[[UIDatePicker alloc]init];//Date picker
pickerView.frame=CGRectMake(0,44,320, 216);
pickerView.datePickerMode = UIDatePickerModeDate;
[pickerView setMinuteInterval:5];
[self.view addsubview:pickerView]
toolBar= [[UIToolbar alloc] initWithFrame:CGRectMake(0,0,320,44)];
[toolBar setBarStyle:UIBarStyleBlackOpaque];
UIBarButtonItem *barButtonDone = [[UIBarButtonItem alloc] initWithTitle:@"Done"
style:UIBarButtonItemStyleBordered target:self action:@selector(changeDateFromLabel:)];
toolBar.items = [[NSArray alloc] initWithObjects:barButtonDone,nil];
barButtonDone.tintColor=[UIColor blackColor];
[pickerView addSubview:toolBar];
The picker view should be set as the inputView
of the text field where you are entering the country. 选择器视图应设置为您要进入国家/地区的文本字段的inputView
。 You should create a toolbar with a standard Done system item and set that as the inputAccessoryView
of the same field. 您应该创建一个带有标准Done系统项的工具栏,并将其设置为同一字段的inputAccessoryView
。
您可以通过添加带有UIPickerView动画的Done按钮的UIToolBar
来完成此操作。
I would even try using something like EAActionSheetPicker . 我甚至会尝试使用类似EAActionSheetPicker的东西。 It manages the display of a pickerView/datePicker inside of an actionSheet. 它管理actionSheet内部的pickerView / datePicker的显示。 It may just be what you're looking for. 它可能就是你要找的东西。
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