Мой код, приведенный ниже, извлечет название страны и код страны с сервера и сохранит в коде 2 NSMutablleMArray, countryMArray и codeMArray. Когда пользователь нажимает txtCountry UITextField, он будет вызывать down picker, а когда пользователь выбирает страну и нажимает Готово, он будет на основе индекса и получать Country Code from codeMArray и вводить код в txtCode UITexField.
Вместо этого мне было интересно, как сразу заполнить txtCode UITextfield при прокрутке down picker. Что-то вроде картинки ниже. Вместо того, чтобы заставить пользователя нажать «Готово». Когда пользователь прокручивает down picker Country Name, txtCode UITexField будет автоматически заполнен Code. Есть ли способы сделать это.
Добавлен следующий код в *
Я добавил downpicker.m и downpicker.h, а также код в *, но он никогда не срабатывает. Пожалуйста, помогите, спасибо.
RootViewController.h
#import <UIKit/UIKit.h>
#import "LoginViewController.h"
#import <DownPicker/UIDownPicker.h>
@protocol LoginViewProtocol <NSObject>
- (void)dismissAndLoginView;
@end
@interface RootViewController : UIViewController <UITextFieldDelegate,UITableViewDelegate>
@property (strong, nonatomic) IBOutlet UITextField *txtCountry;
@property (weak, nonatomic) IBOutlet UIDownPicker *downCountry;
@property (strong, nonatomic) IBOutlet UITextField *txtCode;
@property (strong, nonatomic) IBOutlet UITextField *txtPhone;
@property (strong, nonatomic) NSMutableArray *countryMArray;
@property (strong, nonatomic) NSMutableArray *codeMArray;
@property (nonatomic) DownPicker *pickerCountry;
@end
RootViewController.m
#import "RootViewController.h"
#import <QuartzCore/QuartzCore.h>
@interface RootViewController (){
NSString *sURL,*sResponseData, *sRemaining;
NSString *sCode;
}
@end
@implementation RootViewController
@synthesize loginView;
@synthesize txtCountry,txtCode,txtPhone;
@synthesize countryMArray;
@synthesize codeMArray;
- (void)viewDidLoad
{
[super viewDidLoad];
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(dismissKeyboard)];
[self.view addGestureRecognizer:tap];
//=== Initiallize the Mutable Array
countryMArray = [[NSMutableArray alloc] init];
codeMArray = [[NSMutableArray alloc] init];
//=== Initialize the responseData Mutable Data
self.responseData = [NSMutableData data];
//=== Pass the string to server to get the return Country response.write
appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
sURL = @"https://www.share-fitness.com";
sURL = [sURL stringByAppendingString:@"/apps/getcountry.asp?"];
NSURLRequest *requestCountry = [NSURLRequest requestWithURL:[NSURL URLWithString:sURL]];
(void) [[NSURLConnection alloc] initWithRequest:requestCountry delegate:self];
//=== Pass the string to server to get the return CountryCode
sURL = @"https://www.share-fitness.com";
sURL = [sURL stringByAppendingString:@"/apps/getctcode.asp?"];
NSURLRequest *requestCode = [NSURLRequest requestWithURL:[NSURL URLWithString:sURL]];
(void) [[NSURLConnection alloc] initWithRequest:requestCode delegate:self];
//=== Initialie the picker ====
self.pickerCountry = [[DownPicker alloc] initWithTextField:self.txtCountry withData:countryMArray];
[self.pickerCountry addTarget:self
action:@selector(pickerClicked:)
forControlEvents:UIControlEventValueChanged];
}
//**** ADDED the following but will never trigger ?
- (void)pickerView:(UIDownPicker *)pickerCountry didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
sCode = [codeMArray objectAtIndex:row];
txtCode.text = [@"+"stringByAppendingString:sCode];
}
//**********************
//=== Pick the countryCode, when Country is selected based on Array Index
-(void)pickerClicked:(id)dp {
NSString* selectedValue = [self.pickerCountry text];
for ( int i = 0 ; i < countryMArray.count; i++) {
NSString*item = [countryMArray objectAtIndex:i];
if([item isEqualToString:selectedValue])
{
sCode = [codeMArray objectAtIndex:i];
txtCode.text = [@"+"stringByAppendingString:sCode];
break;
}
}
}
Downpicker.h
#import <UIKit/UIKit.h>
@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;
-(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];
}
-(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;
NSLog(@" This is the data : %@ ", dataArray);
}
-(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