YourViewController.m
@interface YourViewController()
{
DownPicker* workingAtPicker;
DownPicker* emailPicker;
DownPicker* myIndustryPicker;
EJDayMonthPicker* birthdayPicker;
DownPicker* rolePicker;
EJYearMonthPicker* dateLeftSAPPicker;
DownPicker* lineOfBusinessPicker;
DownPicker* skillListPicker;
NSString* searchString;
CoreSkillCell* _sizingCell;
}
@end
@implementation EJWelcomeFinalStepView
// Somewhere in code
dropDownPicker = [[DownPicker alloc] initWithTextField: dropDownTextField withData:array];
@end
DownPicker.h
#import <UIKit/UIKit.h>
@protocol DownPickerDelegate <NSObject>
- (void)itemSelected:(id)sender;
@end
@interface DownPicker : UIControl<UIPickerViewDelegate, UIPickerViewDataSource, UITextFieldDelegate>
{
UIPickerView* pickerView;
IBOutlet UITextField* textField;
NSArray* dataArray;
NSString* placeholder;
NSString* placeholderWhileSelecting;
NSString* toolbarDoneButtonText;
NSString* toolbarCancelButtonText;
UIBarStyle toolbarStyle;
}
@property (nonatomic) NSString* text;
@property (nonatomic) NSInteger selectedIndex;
@property (weak, nonatomic) id<DownPickerDelegate> delegate;
-(id)initWithTextField:(UITextField *)tf;
-(id)initWithTextField:(UITextField *)tf withData:(NSArray*) data;
@property (nonatomic) BOOL shouldDisplayCancelButton;
/**
Sets an alternative image to be show to the right part of the textbox (assuming that showArrowImage is set to TRUE).
@param image
A valid UIImage
*/
-(void) setArrowImage:(UIImage*)image;
-(void) setData:(NSArray*) data;
-(void) setPlaceholder:(NSString*)str;
-(void) setPlaceholderWhileSelecting:(NSString*)str;
-(void) setAttributedPlaceholder:(NSAttributedString *)attributedString;
-(void) setToolbarDoneButtonText:(NSString*)str;
-(void) setToolbarCancelButtonText:(NSString*)str;
-(void) setToolbarStyle:(UIBarStyle)style;
/**
TRUE to show the rightmost arrow image, FALSE to hide it.
@param b
TRUE to show the rightmost arrow image, FALSE to hide it.
*/
-(void) showArrowImage:(BOOL)b;
-(UIPickerView*) getPickerView;
-(UITextField*) getTextField;
/**
Retrieves the string value at the specified index.
@return
The value at the given index or NIL if nothing has been selected yet.
*/
-(NSString*) getValueAtIndex:(NSInteger)index;
/**
Sets the zero-based index of the selected item: -1 can be used to clear selection.
@return
The value at the given index or NIL if nothing has been selected yet.
*/
-(void) setValueAtIndex:(NSInteger)index;
@end
DownPicker.m
#import "DownPicker.h"
@implementation DownPicker
{
NSString* _previousSelectedString;
}
-(id)initWithTextField:(UITextField *)tf
{
return [self initWithTextField:tf withData:nil];
}
-(id)initWithTextField:(UITextField *)tf withData:(NSArray*) data
{
self = [super init];
if (self) {
self->textField = tf;
self->textField.delegate = self;
// set UI defaults
self->toolbarStyle = UIBarStyleDefault;
// set language defaults
self->placeholder = @"Tap to choose...";
self->placeholderWhileSelecting = @"Pick an option...";
self->toolbarDoneButtonText = @"Done";
self->toolbarCancelButtonText = @"Cancel";
// hide the caret and its blinking
[[textField valueForKey:@"textInputTraits"]
setValue:[UIColor clearColor]
forKey:@"insertionPointColor"];
// set the placeholder
self->textField.placeholder = self->placeholder;
// setup the arrow image
UIImage* img = [UIImage imageNamed:@"downArrow.png"]; // non-CocoaPods
if (img == nil) img = [UIImage imageNamed:@"DownPicker.bundle/downArrow.png"]; // CocoaPods
if (img != nil) self->textField.rightView = [[UIImageView alloc] initWithImage:img];
self->textField.rightView.contentMode = UIViewContentModeScaleAspectFit;
self->textField.rightView.clipsToBounds = YES;
// show the arrow image by default
[self showArrowImage:YES];
// set the data array (if present)
if (data != nil) {
[self setData: data];
}
self.shouldDisplayCancelButton = YES;
}
return self;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView;
{
return 1;
}
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
self->textField.text = [dataArray objectAtIndex:row];
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component;
{
return [dataArray count];
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component;
{
return [dataArray objectAtIndex:row];
}
-(void)doneClicked:(id) sender
{
//hides the pickerView
[textField resignFirstResponder];
if (self->textField.text.length == 0 || ![self->dataArray containsObject:self->textField.text]) {
// self->textField.text = [dataArray objectAtIndex:0];
[self setValueAtIndex:-1];
self->textField.placeholder = self->placeholder;
}
/*
else {
if (![self->textField.text isEqualToString:_previousSelectedString]) {
[self sendActionsForControlEvents:UIControlEventValueChanged];
}
}
*/
[self sendActionsForControlEvents:UIControlEventValueChanged];
if ([self.delegate respondsToSelector:@selector(itemSelected:)]) {
[self.delegate itemSelected:self];
}
}
-(void)cancelClicked:(id)sender
{
[textField resignFirstResponder]; //hides the pickerView
if (_previousSelectedString.length == 0 || ![self->dataArray containsObject:_previousSelectedString]) {
self->textField.placeholder = self->placeholder;
}
self->textField.text = _previousSelectedString;
}
- (IBAction)showPicker:(id)sender
{
_previousSelectedString = self->textField.text;
pickerView = [[UIPickerView alloc] init];
pickerView.showsSelectionIndicator = YES;
pickerView.dataSource = self;
pickerView.delegate = self;
//If the text field is empty show the place holder otherwise show the last selected option
if (self->textField.text.length == 0 || ![self->dataArray containsObject:self->textField.text])
{
if (self->placeholderWhileSelecting) {
self->textField.placeholder = self->placeholderWhileSelecting;
}
// 0.1.31 patch: auto-select first item: it basically makes placeholderWhileSelecting useless, but
// it solves the "first item cannot be selected" bug due to how the pickerView works.
[self setSelectedIndex:0];
}
else
{
if ([self->dataArray containsObject:self->textField.text]) {
[self->pickerView selectRow:[self->dataArray indexOfObject:self->textField.text] inComponent:0 animated:YES];
}
}
UIToolbar* toolbar = [[UIToolbar alloc] init];
toolbar.barStyle = self->toolbarStyle;
[toolbar sizeToFit];
//space between buttons
UIBarButtonItem *flexibleSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace
target:nil
action:nil];
UIBarButtonItem* doneButton = [[UIBarButtonItem alloc]
initWithTitle:self->toolbarDoneButtonText
style:UIBarButtonItemStyleDone
target:self
action:@selector(doneClicked:)];
if (self.shouldDisplayCancelButton) {
UIBarButtonItem* cancelButton = [[UIBarButtonItem alloc]
initWithTitle:self->toolbarCancelButtonText
style:UIBarButtonItemStylePlain
target:self
action:@selector(cancelClicked:)];
[toolbar setItems:[NSArray arrayWithObjects:cancelButton, flexibleSpace, doneButton, nil]];
} else {
[toolbar setItems:[NSArray arrayWithObjects:flexibleSpace, doneButton, nil]];
}
//custom input view
textField.inputView = pickerView;
textField.inputAccessoryView = toolbar;
}
- (BOOL)textFieldShouldBeginEditing:(UITextField *)aTextField
{
if ([self->dataArray count] > 0) {
[self showPicker:aTextField];
return YES;
}
return NO;
}
- (void)textFieldDidEndEditing:(UITextField *)aTextField {
// [self doneClicked:aTextField];
aTextField.userInteractionEnabled = YES;
}
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{
return NO;
}
-(void) setData:(NSArray*) data
{
dataArray = data;
}
-(void) showArrowImage:(BOOL)b
{
if (b == YES) {
// set the DownPicker arrow to the right (you can replace it with any 32x24 px transparent image: changing size might give different results)
self->textField.rightViewMode = UITextFieldViewModeAlways;
}
else {
self->textField.rightViewMode = UITextFieldViewModeNever;
}
}
-(void) setArrowImage:(UIImage*)image
{
[(UIImageView*)self->textField.rightView setImage:image];
}
-(void) setPlaceholder:(NSString*)str
{
self->placeholder = str;
self->textField.placeholder = self->placeholder;
}
-(void) setPlaceholderWhileSelecting:(NSString*)str
{
self->placeholderWhileSelecting = str;
}
-(void) setAttributedPlaceholder:(NSAttributedString *)attributedString
{
self->textField.attributedPlaceholder = attributedString;
}
-(void) setToolbarDoneButtonText:(NSString*)str
{
self->toolbarDoneButtonText = str;
}
-(void) setToolbarCancelButtonText:(NSString*)str
{
self->toolbarCancelButtonText = str;
}
-(void) setToolbarStyle:(UIBarStyle)style;
{
self->toolbarStyle = style;
}
-(UIPickerView*) getPickerView
{
return self->pickerView;
}
-(UITextField*) getTextField
{
return self->textField;
}
-(NSString*) getValueAtIndex:(NSInteger)index
{
return (self->dataArray.count > index) ? [self->dataArray objectAtIndex:index] : nil;
}
-(void) setValueAtIndex:(NSInteger)index
{
if (index >= 0) [self pickerView:nil didSelectRow:index inComponent:0];
else [self setText:nil];
}
/**
Getter for text property.
@return
The value of the selected item or NIL NIL if nothing has been selected yet.
*/
- (NSString*) text {
return self->textField.text;
}
/**
Setter for text property.
@param txt
The value of the item to select or NIL to clear selection.
*/
- (void) setText:(NSString*)txt {
if (txt != nil) {
NSInteger index = [self->dataArray indexOfObject:txt];
if (index != NSNotFound) [self setValueAtIndex:index];
}
else {
self->textField.text = txt;
}
}
/**
Getter for selectedIndex property.
@return
The zero-based index of the selected item or -1 if nothing has been selected yet.
*/
- (NSInteger)selectedIndex {
NSInteger index = [self->dataArray indexOfObject:self->textField.text];
return (index != NSNotFound) ? (NSInteger)index : -1;
}
/**
Setter for selectedIndex property.
@param index
Sets the zero-based index of the selected item using the setValueAtIndex method: -1 can be used to clear selection.
*/
- (void)setSelectedIndex:(NSInteger)index {
[self setValueAtIndex:(NSInteger)index];
}
@end
