向 UIPickerView 添加按钮 - Swift 1.2
Add buttons to UIPickerView - Swift 1.2
我想在 UIPickerView 中添加两个 UIButtons（在它上面）。请看一下这张图片中的 Cancel 和 Done 按钮：
我该怎么做？
以下是我在 ObjC 中如何将带有按钮的选择器弹出窗口添加到文本字段。应该很简单，可以翻译成swift。基本上，您创建选择器并将其分配给文本 inputView。然后创建一个工具栏，将其分配给文本 inputAccessoryView，它在 inputView 弹出时位于其顶部。
self.manufacturerPicker = [[UIPickerView alloc] initWithFrame:CGRectZero];
self.manufacturerPicker.delegate = self;
self.manufacturerPicker.dataSource = self;
[self.manufacturerPicker setShowsSelectionIndicator:YES];
self.filterByManufacturerTextField.inputView = self.manufacturerPicker;
UIToolbar *manufacturerPickerToolbar=[[UIToolbar alloc] init];
manufacturerPickerToolbar.barStyle = UIBarStyleBlack;
manufacturerPickerToolbar.translucent = YES;
manufacturerPickerToolbar.tintColor = nil;
[manufacturerPickerToolbar sizeToFit];
UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithTitle:@"Done"
style:UIBarButtonItemStyleBordered target:self
action:@selector(manufacturerPickerDoneClicked:)];
UIBarButtonItem *spacerButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc] initWithTitle:@"Cancel"
style:UIBarButtonItemStyleBordered target:self
action:@selector(manufacturerPickerCancelClicked:)];
[manufacturerPickerToolbar setItems:@[cancelButton,spacerButton,doneButton]];
self.filterByManufacturerTextField.inputAccessoryView = manufacturerPickerToolbar;
针对没有 UITextField 作为起点的情况更新：
如果你想从一个单元格中启动一个选择器，就像它是一个文本字段选择器一样，我相信你必须让你的 UITableViewCell 实现成为第一响应者的过程。
要做到这一点，我认为该过程是在您的单元中实施 UIResponder 协议。
1) 覆盖 canBecomeFirstResponder 和 return 是。
2) 覆盖 inputView 属性 getter。在这段代码中 return 你的 UIPickerView。
§3) 覆盖 inputAccessoryView 属性 getter。在这段代码中 return 你的 UIToolbar.
现在在您的小区中，当您 select 小区时，通过调用 [self becomeFirstResponder]; 使小区成为第一响应者。
我认为这应该会正确显示选择器和工具栏。可能还有更多内容。
取消或完成后，使用 [self resignFirstResponder];
删除它
以前没做过，不过我觉得大概是这个流程。
选项 2（作弊）：
有时候作弊更容易。在您的单元格后面添加一个隐藏的 UITextField 或添加一个宽度为 0 的文本字段。按照原来的建议设置它的inputView和inputAccessoryView。
然后当您 select 单元格使用 [self.<your text field property> becomeFirstResponder];
使 UITextField 成为第一响应者时
这应该会通过后门给你同样的结果。
我已经解决了，请在Swift中回答：
var pickerView = UIPickerView(frame: CGRectMake(0, 200, view.frame.width, 300))
pickerView.backgroundColor = .whiteColor()
pickerView.showsSelectionIndicator = true
var toolBar = UIToolbar()
toolBar.barStyle = UIBarStyle.Default
toolBar.translucent = true
toolBar.tintColor = UIColor(red: 76/255, green: 217/255, blue: 100/255, alpha: 1)
toolBar.sizeToFit()
let doneButton = UIBarButtonItem(title: "Done", style: UIBarButtonItemStyle.Bordered, target: self, action: "donePicker")
let spaceButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FlexibleSpace, target: nil, action: nil)
let cancelButton = UIBarButtonItem(title: "Cancel", style: UIBarButtonItemStyle.Bordered, target: self, action: "canclePicker")
toolBar.setItems([cancelButton, spaceButton, doneButton], animated: false)
toolBar.userInteractionEnabled = true
textField.inputView = pickerView
textField.inputAccessoryView = toolBar
看我的。我有 Collection 查看和 UIPicker 到 select 照片文件夹。
//MARK:- SHOW PHOTO FOLDER BUTTON METHOD
@IBAction func photoFolderListButtonClicked(sender: UIButton) {
self.navigationItem.setHidesBackButton(true, animated: true)
//Making PickerView of Competitors
let DEVICE_SCREEN_WIDTH = UIScreen.mainScreen().bounds.size.width
photoFolderListPicker.frame = CGRectMake(0.0, 44.0, DEVICE_SCREEN_WIDTH, 260)
photoFolderListPicker.dataSource = self
photoFolderListPicker.delegate = self
photoFolderListPicker.showsSelectionIndicator = true;
photoFolderListPicker.backgroundColor = UIColor.whiteColor()
let pickerDateToolbar = UIToolbar(frame: CGRectMake(0, 0, DEVICE_SCREEN_WIDTH, 44))
pickerDateToolbar.barStyle = UIBarStyle.Black
pickerDateToolbar.barTintColor = UIColor.blackColor()
pickerDateToolbar.translucent = true
//Cancel button on photoFolderListPicker
let barItems = NSMutableArray()
let labelCancel = UILabel()
labelCancel.text = " Cancel"
let titleCancel = UIBarButtonItem(title: labelCancel.text, style: UIBarButtonItemStyle.Plain, target: self, action: Selector("cancelPickerSelectionButtonClicked:"))
titleCancel.tintColor = UIColor.whiteColor()
barItems.addObject(titleCancel)
var flexSpace: UIBarButtonItem
flexSpace = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FlexibleSpace, target: self, action: nil)
barItems.addObject(flexSpace)
//Done Button on photoFolderListPicker
let doneBtn = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.Done, target: self, action: Selector("photoFolderSelectionDone:"))
barItems.addObject(doneBtn)
doneBtn.tintColor = UIColor.whiteColor()
pickerDateToolbar.setItems(barItems as [AnyObject] as? [UIBarButtonItem], animated: true)
actionView.addSubview(pickerDateToolbar)
actionView.addSubview(photoFolderListPicker)
if (window != nil) {
window!.addSubview(actionView)
}
else {
self.view.addSubview(actionView)
}
UIView.animateWithDuration(0.2, animations: {
self.actionView.frame = CGRectMake(0, UIScreen.mainScreen().bounds.size.height - 250.0, UIScreen.mainScreen().bounds.size.width, 250)
})
}
//MARK:- PICKERVIEW DELEGATE METHODS
func pickerView(_pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return model.documentFolders.count
}
func numberOfComponentsInPickerView(_pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(_pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String! {
return model.documentFolders[row].value
}
//MARK:- PICKERVIEW BUTTON METHODS
func cancelPickerSelectionButtonClicked(sender: UIBarButtonItem) {
self.navigationItem.setHidesBackButton(false, animated: true)
UIView.animateWithDuration(0.2, animations: {
self.actionView.frame = CGRectMake(0, UIScreen.mainScreen().bounds.size.height, UIScreen.mainScreen().bounds.size.width, 210.0)
}, completion: { _ in
for obj: AnyObject in self.actionView.subviews {
if let view = obj as? UIView
{
view.removeFromSuperview()
}
}
})
photoFolderListButton.setTitle(" "+"Select Folder", forState: UIControlState.Normal)
}
func photoFolderSelectionDone(sender: UIBarButtonItem) {
uploadedPhotoFolderName?.isEmpty
loadedFromPageSection = "fromPhotoFolderSelectionDone"
self.disableScoutDetailUserInterfaceElementsDutingApiCall()
//setting selectedPhotoFolderItem and selectedPhotoFolderItemId
let myRow = photoFolderListPicker.selectedRowInComponent(0)
selectedPhotoFolderItem = model.documentFolders[myRow].value!
selectedPhotoFolderItemId = Int(model.documentFolders[myRow].key!)
UIView.animateWithDuration(0.2, animations: {
self.actionView.frame = CGRectMake(0, UIScreen.mainScreen().bounds.size.height, UIScreen.mainScreen().bounds.size.width, 260.0)
}, completion: { _ in
for obj: AnyObject in self.actionView.subviews {
if let view = obj as? UIView
{
view.removeFromSuperview()
}
}
})
photoFolderListButton.setTitle(" "+(selectedPhotoFolderItem as? String)!, forState: UIControlState.Normal)
self.view.makeToastActivityWithMessage(message: "Fetching")
//Delegate is added to class after popViewControllerAnimated(true) called
model.delegate = self
//API CALL - Fetching Photos
AppController().fetchPropertyPhotosGallery(hbId, propertyId: scoutPropertyId, fileTypeId: selectedPhotoFolderItemId)
}
我想在 UIPickerView 中添加两个 UIButtons（在它上面）。请看一下这张图片中的 Cancel 和 Done 按钮：
我该怎么做？
以下是我在 ObjC 中如何将带有按钮的选择器弹出窗口添加到文本字段。应该很简单，可以翻译成swift。基本上，您创建选择器并将其分配给文本 inputView。然后创建一个工具栏，将其分配给文本 inputAccessoryView，它在 inputView 弹出时位于其顶部。
self.manufacturerPicker = [[UIPickerView alloc] initWithFrame:CGRectZero];
self.manufacturerPicker.delegate = self;
self.manufacturerPicker.dataSource = self;
[self.manufacturerPicker setShowsSelectionIndicator:YES];
self.filterByManufacturerTextField.inputView = self.manufacturerPicker;
UIToolbar *manufacturerPickerToolbar=[[UIToolbar alloc] init];
manufacturerPickerToolbar.barStyle = UIBarStyleBlack;
manufacturerPickerToolbar.translucent = YES;
manufacturerPickerToolbar.tintColor = nil;
[manufacturerPickerToolbar sizeToFit];
UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithTitle:@"Done"
style:UIBarButtonItemStyleBordered target:self
action:@selector(manufacturerPickerDoneClicked:)];
UIBarButtonItem *spacerButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc] initWithTitle:@"Cancel"
style:UIBarButtonItemStyleBordered target:self
action:@selector(manufacturerPickerCancelClicked:)];
[manufacturerPickerToolbar setItems:@[cancelButton,spacerButton,doneButton]];
self.filterByManufacturerTextField.inputAccessoryView = manufacturerPickerToolbar;
针对没有 UITextField 作为起点的情况更新：
如果你想从一个单元格中启动一个选择器，就像它是一个文本字段选择器一样，我相信你必须让你的 UITableViewCell 实现成为第一响应者的过程。
要做到这一点，我认为该过程是在您的单元中实施 UIResponder 协议。
1) 覆盖 canBecomeFirstResponder 和 return 是。
2) 覆盖 inputView 属性 getter。在这段代码中 return 你的 UIPickerView。
§3) 覆盖 inputAccessoryView 属性 getter。在这段代码中 return 你的 UIToolbar.
现在在您的小区中，当您 select 小区时，通过调用 [self becomeFirstResponder]; 使小区成为第一响应者。
我认为这应该会正确显示选择器和工具栏。可能还有更多内容。
取消或完成后，使用 [self resignFirstResponder];
以前没做过，不过我觉得大概是这个流程。
选项 2（作弊）：
有时候作弊更容易。在您的单元格后面添加一个隐藏的 UITextField 或添加一个宽度为 0 的文本字段。按照原来的建议设置它的inputView和inputAccessoryView。
然后当您 select 单元格使用 [self.<your text field property> becomeFirstResponder];
这应该会通过后门给你同样的结果。
我已经解决了，请在Swift中回答：
var pickerView = UIPickerView(frame: CGRectMake(0, 200, view.frame.width, 300))
pickerView.backgroundColor = .whiteColor()
pickerView.showsSelectionIndicator = true
var toolBar = UIToolbar()
toolBar.barStyle = UIBarStyle.Default
toolBar.translucent = true
toolBar.tintColor = UIColor(red: 76/255, green: 217/255, blue: 100/255, alpha: 1)
toolBar.sizeToFit()
let doneButton = UIBarButtonItem(title: "Done", style: UIBarButtonItemStyle.Bordered, target: self, action: "donePicker")
let spaceButton = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FlexibleSpace, target: nil, action: nil)
let cancelButton = UIBarButtonItem(title: "Cancel", style: UIBarButtonItemStyle.Bordered, target: self, action: "canclePicker")
toolBar.setItems([cancelButton, spaceButton, doneButton], animated: false)
toolBar.userInteractionEnabled = true
textField.inputView = pickerView
textField.inputAccessoryView = toolBar
看我的。我有 Collection 查看和 UIPicker 到 select 照片文件夹。
//MARK:- SHOW PHOTO FOLDER BUTTON METHOD
@IBAction func photoFolderListButtonClicked(sender: UIButton) {
self.navigationItem.setHidesBackButton(true, animated: true)
//Making PickerView of Competitors
let DEVICE_SCREEN_WIDTH = UIScreen.mainScreen().bounds.size.width
photoFolderListPicker.frame = CGRectMake(0.0, 44.0, DEVICE_SCREEN_WIDTH, 260)
photoFolderListPicker.dataSource = self
photoFolderListPicker.delegate = self
photoFolderListPicker.showsSelectionIndicator = true;
photoFolderListPicker.backgroundColor = UIColor.whiteColor()
let pickerDateToolbar = UIToolbar(frame: CGRectMake(0, 0, DEVICE_SCREEN_WIDTH, 44))
pickerDateToolbar.barStyle = UIBarStyle.Black
pickerDateToolbar.barTintColor = UIColor.blackColor()
pickerDateToolbar.translucent = true
//Cancel button on photoFolderListPicker
let barItems = NSMutableArray()
let labelCancel = UILabel()
labelCancel.text = " Cancel"
let titleCancel = UIBarButtonItem(title: labelCancel.text, style: UIBarButtonItemStyle.Plain, target: self, action: Selector("cancelPickerSelectionButtonClicked:"))
titleCancel.tintColor = UIColor.whiteColor()
barItems.addObject(titleCancel)
var flexSpace: UIBarButtonItem
flexSpace = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FlexibleSpace, target: self, action: nil)
barItems.addObject(flexSpace)
//Done Button on photoFolderListPicker
let doneBtn = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.Done, target: self, action: Selector("photoFolderSelectionDone:"))
barItems.addObject(doneBtn)
doneBtn.tintColor = UIColor.whiteColor()
pickerDateToolbar.setItems(barItems as [AnyObject] as? [UIBarButtonItem], animated: true)
actionView.addSubview(pickerDateToolbar)
actionView.addSubview(photoFolderListPicker)
if (window != nil) {
window!.addSubview(actionView)
}
else {
self.view.addSubview(actionView)
}
UIView.animateWithDuration(0.2, animations: {
self.actionView.frame = CGRectMake(0, UIScreen.mainScreen().bounds.size.height - 250.0, UIScreen.mainScreen().bounds.size.width, 250)
})
}
//MARK:- PICKERVIEW DELEGATE METHODS
func pickerView(_pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return model.documentFolders.count
}
func numberOfComponentsInPickerView(_pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(_pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String! {
return model.documentFolders[row].value
}
//MARK:- PICKERVIEW BUTTON METHODS
func cancelPickerSelectionButtonClicked(sender: UIBarButtonItem) {
self.navigationItem.setHidesBackButton(false, animated: true)
UIView.animateWithDuration(0.2, animations: {
self.actionView.frame = CGRectMake(0, UIScreen.mainScreen().bounds.size.height, UIScreen.mainScreen().bounds.size.width, 210.0)
}, completion: { _ in
for obj: AnyObject in self.actionView.subviews {
if let view = obj as? UIView
{
view.removeFromSuperview()
}
}
})
photoFolderListButton.setTitle(" "+"Select Folder", forState: UIControlState.Normal)
}
func photoFolderSelectionDone(sender: UIBarButtonItem) {
uploadedPhotoFolderName?.isEmpty
loadedFromPageSection = "fromPhotoFolderSelectionDone"
self.disableScoutDetailUserInterfaceElementsDutingApiCall()
//setting selectedPhotoFolderItem and selectedPhotoFolderItemId
let myRow = photoFolderListPicker.selectedRowInComponent(0)
selectedPhotoFolderItem = model.documentFolders[myRow].value!
selectedPhotoFolderItemId = Int(model.documentFolders[myRow].key!)
UIView.animateWithDuration(0.2, animations: {
self.actionView.frame = CGRectMake(0, UIScreen.mainScreen().bounds.size.height, UIScreen.mainScreen().bounds.size.width, 260.0)
}, completion: { _ in
for obj: AnyObject in self.actionView.subviews {
if let view = obj as? UIView
{
view.removeFromSuperview()
}
}
})
photoFolderListButton.setTitle(" "+(selectedPhotoFolderItem as? String)!, forState: UIControlState.Normal)
self.view.makeToastActivityWithMessage(message: "Fetching")
//Delegate is added to class after popViewControllerAnimated(true) called
model.delegate = self
//API CALL - Fetching Photos
AppController().fetchPropertyPhotosGallery(hbId, propertyId: scoutPropertyId, fileTypeId: selectedPhotoFolderItemId)
}