我有一个隐藏的UIpickerView，根据按下的按钮，它应该显示不同的数组。按下按钮时会显示选择器视图但由于某种原因它不会在选择器视图中显示数组。我会非常感谢任何帮助!!!!
这是.m文件：
#import "ViewController.h"
#import <MessageUI/MessageUI.h>
#import <MessageUI/MFMailComposeViewController.h>
#define GeoLocation TRUE // FALSE for no latitude/longitude information
#define kPICKERCOLUMN 1
typedef NS_ENUM(NSInteger, PickerType) {
CATEGORY_PICKER,
LOCATION_PICKER,
ORIGINATOR_PICKER,
DESTINATION_PICKER,
STATUS_PICKER
};
#define kPICKERCOLUMN 1
#define kPICKER_TAG 101
@interface ViewController ()
@end
@implementation ViewController
{
UIPickerView *picker;
PickerType pickerType;
}
@synthesize nameTextField, emailTextField, dateTextField, timeTextField, blankTextField, blankbTextField, mlabelcategory, messageTextView, categoryTypeBtn;
@synthesize name, emailaddress, date, time, blank, blankb, category, message, email, button;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
categoryTypes = [[NSArray alloc] initWithObjects:@"Appetizers",@"Breakfast",@"Dessert",@"Drinks",
@"Main Dish/Entree", @"Salad", @"Side Dish", @"Soup", @"Snack",
@"Baby Food", @"Pet Food",nil];
locationTypes = [[NSArray alloc] initWithObjects:@"African",@"American",@"Armenian",@"Barbecue"
,nil];
originatorTypes = [[NSArray alloc] initWithObjects:@"African",@"American",@"Armenian",@"Barbecue",
nil];
destinationTypes = [[NSArray alloc] initWithObjects:@"African",@"American",@"Armenian",@"Barbecue",
nil];
statusTypes = [[NSArray alloc] initWithObjects:@"African",@"American",@"Armenian",@"Barbecue",
nil];
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
nameTextField.text = nil;
emailTextField.text = nil;
dateTextField.text = nil;
timeTextField.text = nil;
blankTextField.text = nil;
blankbTextField.text = nil;
mlabelcategory.text = nil;
messageTextView.text = nil;
picker = [[UIPickerView alloc] initWithFrame:CGRectMake(100,100,400,160)];
picker.showsSelectionIndicator = TRUE;
picker.dataSource = self;
picker.delegate = self;
picker.hidden = YES;
[self.view addSubview:picker];
}
/*
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations.
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
*/
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)eve
{
picker.hidden = YES;
}
#pragma mark -
#pragma mark picker methods
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return kPICKERCOLUMN;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
switch (pickerType) {
case CATEGORY_PICKER:
return [categoryTypes count];;
break;
case LOCATION_PICKER:
return [locationTypes count];
break;
case ORIGINATOR_PICKER:
return [originatorTypes count];
break;
case DESTINATION_PICKER:
return [destinationTypes count];
break;
case STATUS_PICKER:
return [statusTypes count];
break;
default: return -1;
break;
}
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
switch (pickerType) {
case CATEGORY_PICKER:
return [categoryTypes objectAtIndex:row];
break;
case LOCATION_PICKER:
return [locationTypes objectAtIndex:row];
break;
case ORIGINATOR_PICKER:
return [originatorTypes objectAtIndex:row];
break;
case DESTINATION_PICKER:
return [destinationTypes objectAtIndex:row];
break;
case STATUS_PICKER:
return [statusTypes objectAtIndex:row];
break;
default: return nil;
break;
}
}
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
switch (pickerType) {
case CATEGORY_PICKER: {
NSString *categoryType = [categoryTypes objectAtIndex:[pickerView selectedRowInComponent:0]];
[categoryTypeBtn setTitle:categoryType forState:UIControlStateNormal];
break;
}
case LOCATION_PICKER: {
NSString *locationType = [locationTypes objectAtIndex:[pickerView selectedRowInComponent:0]];
[locationTypeBtn setTitle:locationType forState:UIControlStateNormal];
break;
}
case ORIGINATOR_PICKER: {
NSString *originatorType = [originatorTypes objectAtIndex:[pickerView selectedRowInComponent:0]];
[originatorTypeBtn setTitle:originatorType forState:UIControlStateNormal];
break;
}
case DESTINATION_PICKER: {
NSString *destinationType = [destinationTypes objectAtIndex:[pickerView selectedRowInComponent:0]];
[destinationTypeBtn setTitle:destinationType forState:UIControlStateNormal];
break;
}
case STATUS_PICKER:{
NSString *statusType = [statusTypes objectAtIndex:[pickerView selectedRowInComponent:0]];
[statusTypeBtn setTitle:statusType forState:UIControlStateNormal];
break;
}
default:
break;
}
}
-(IBAction) showLocationTypePicker{
pickerType = LOCATION_PICKER;
picker.hidden = NO;
[picker reloadAllComponents];
}
-(IBAction) showCategoryTypePicker{
pickerType = CATEGORY_PICKER;
picker.hidden = NO;
[picker reloadAllComponents];
}
-(IBAction) showOriginatorTypePicker{
pickerType = ORIGINATOR_PICKER;
picker.hidden = NO;
[picker reloadAllComponents];
}
-(IBAction) showDestinationTypePicker{
pickerType = DESTINATION_PICKER;
picker.hidden = NO;
[picker reloadAllComponents];
}
-(IBAction) showStatusTypePicker{
pickerType = STATUS_PICKER;
picker.hidden = NO;
[picker reloadAllComponents];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (NSUInteger)supportedInterfaceOrientations {
return UIInterfaceOrientationMaskPortrait;
}
#pragma - getting info from the UI
//NSString *test = nil;
- (IBAction)checkData:(id)sender
{
/*
name = nameTextField.text;
surname = surnameTextField.text;
bornDate = bornDateTextField.text;
address = addressTextField.text;
zipCode = zipTextField.text;
email = emailTextField.text;
*/
//NSLog(@" Name: %@ \n Surname: %@ \n Date of Birth: %@ \n Address: %@ \n Post Code: %@ \n email: %@ \n", name, surname, bornDate, address, zipCode, email);
unsigned int x,a = 0;
NSMutableString *emailmessage; //stringa variabile
emailmessage = [NSMutableString stringWithFormat: @""]; //le stringhe mutabili vanno inizializzate in questo modo!
for (x=0; x<7; x++)
{
switch (x) {
case 0:
if (nameTextField.text == nil) {
[emailmessage appendString:@"Name, "];
a=1;
}
break;
case 1:
if (emailTextField.text == nil)
{
[emailmessage appendString:@"Email Address, "];
a=1;
}
break;
case 2:
if (dateTextField.text == nil)
{
[emailmessage appendString:@"Date of Near Miss, "];
a=1;
}
break;
case 3:
if (timeTextField.text == nil)
{
[emailmessage appendString:@"Time of Near Miss, "];
a=1;
}
break;
case 4:
if (blankTextField.text == nil)
{
[emailmessage appendString:@"Post Code, "];
a=1;
}
break;
case 5:
if (blankbTextField.text == nil)
{
[emailmessage appendString:@"Email, "];
a=1;
}
break;
case 6:
if (mlabelcategory.text == nil)
{
[emailmessage appendString:@"Category, "];
a=1;
}
break;
case 7:
if (messageTextView.text == nil)
{
[emailmessage appendString:@"Observation Description, "];
a=1;
}
break;
default:
break;
}
}
NSLog (@"Email Message: %@", emailmessage);
if (a == 1) {
NSMutableString *popupError;
popupError = [NSMutableString stringWithFormat: @"Per inviare compilare i seguenti campi: "];
[popupError appendString:emailmessage]; //aggiungo i miei errori
[popupError appendString: @" grazie della comprensione."]; //
NSLog(@"%@", popupError);
UIAlertView *chiamataEffettuata = [[UIAlertView alloc]
initWithTitle:@"ATTENTION" //titolo del mio foglio
message:popupError
delegate:self
cancelButtonTitle:@"Ok, correggo" //bottone con cui si chiude il messaggio
otherButtonTitles:nil, nil];
[chiamataEffettuata show]; //istanza per mostrare effettivamente il messaggio
}
else
{
name = nameTextField.text;
emailaddress = emailTextField.text;
date = dateTextField.text;
time = timeTextField.text;
blank = blankTextField.text;
blankb = blankbTextField.text;
category = mlabelcategory.text;
message = messageTextView.text;
NSMutableString *nearmissreport;
nearmissreport = [NSMutableString stringWithFormat: @"<br><br> <b>Name:</b> %@ <br> <b>Email Address:</b> %@ <br> <b>Date of Near Miss:</b> %@ <br> <b>Time of Near Miss:</b> %@ <br> <b>Post Code:</b> %@ <br> <b>Email Address:</b> %@ <br> <b>Category:</b> %@ <br><b>Observation Description:</b> %@ <br>", name, emailaddress, date, time, blank, blankb, category, message];
NSLog(@"Near Miss Report: %@", nearmissreport);
NSMutableString *testoMail;
testoMail = [NSMutableString stringWithFormat: nearmissreport];
NSLog(@"%@", testoMail);
//MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
picker.mailComposeDelegate = self;
[picker setSubject: name];
// Set up the recipients.
NSArray *toRecipients = [NSArray arrayWithObjects:@"paul.haddell@bbmmjv.com",nil];
//NSArray *ccRecipients = [NSArray arrayWithObjects:@"second@example.com",@"third@example.com", nil];
//NSArray *bccRecipients = [NSArray arrayWithObjects:@"four@example.com",nil];
[picker setToRecipients:toRecipients];
//[picker setCcRecipients:ccRecipients];
//[picker setBccRecipients:bccRecipients];
// Attach an image to the email.
//NSString *path = [[NSBundle mainBundle] pathForResource:@"ipodnano" ofType:@"png"];
//NSData *myData = [NSData dataWithContentsOfFile:path];
//[picker addAttachmentData:myData mimeType:@"image/png" fileName:@"ipodnano"];
// Fill out the email body text.
//NSMutableString *emailBody;
testoMail = [NSMutableString stringWithFormat: @"%@", testoMail];
[picker setMessageBody:testoMail isHTML:YES]; //HTML!!!!!!
// Present the mail composition interface.
[self presentViewController:picker animated:YES completion:nil];
}
}
// The mail compose view controller delegate method
- (void)mailComposeController:(MFMailComposeViewController *)controller
didFinishWithResult:(MFMailComposeResult)result
error:(NSError *)error
{
[self dismissModalViewControllerAnimated:YES];
}
#pragma mark - Mandare email
/*
- (void)sendMail:(NSMutableString*)testoMail{
MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
picker.mailComposeDelegate = self;
[picker setSubject:@"Reclutamento pompieri"];
// Set up the recipients.
NSArray *toRecipients = [NSArray arrayWithObjects:@"reda.bousbah@gmail.com",nil];
//NSArray *ccRecipients = [NSArray arrayWithObjects:@"second@example.com",@"third@example.com", nil];
//NSArray *bccRecipients = [NSArray arrayWithObjects:@"four@example.com",nil];
[picker setToRecipients:toRecipients];
//[picker setCcRecipients:ccRecipients];
//[picker setBccRecipients:bccRecipients];
// Attach an image to the email.
//NSString *path = [[NSBundle mainBundle] pathForResource:@"ipodnano" ofType:@"png"];
//NSData *myData = [NSData dataWithContentsOfFile:path];
//[picker addAttachmentData:myData mimeType:@"image/png" fileName:@"ipodnano"];
// Fill out the email body text.
NSString *emailBody = @"It is raining in sunny California!";
[picker setMessageBody:emailBody isHTML:NO];
// Present the mail composition interface.
[self presentViewController:picker animated:YES completion:nil];
}
*/
#pragma mark - methods to control the keyboard
- (IBAction)backgroundTap:(id)sender //method for resign the keyboard when the background is tapped
{
[nameTextField resignFirstResponder];
[emailTextField resignFirstResponder];
[dateTextField resignFirstResponder];
[timeTextField resignFirstResponder];
[blankTextField resignFirstResponder];
[blankbTextField resignFirstResponder];
[mlabelcategory resignFirstResponder];
[messageTextView resignFirstResponder];
}
- (IBAction)doneButtonPressed:(id)sender
{
NSLog( @"done button pressed");
[sender resignFirstResponder];
}
@end
非常感谢