实际上我正在制作一个闹钟应用程序。在那里，当我设置时间时，UILocalNotification 事件发生在那个时候，它调用 AppDelegate 类的方法，即 didReceiveNotifications 方法。在这个方法中，我编写了一个代码来调用 SetViewController 的方法(showReminder 方法)，现在在这个方法中，我希望它应该显示一个 NewViewController，即 TimeViewController，因为我必须在调用警报时显示动画。

我需要这个，因为当警报调用时，我已经设置了一个要显示的 Action 表，但我也想显示动画。 Action 表出现在所有 View 中但是动画只能在特定 View 中显示，这就是为什么我需要显示 A不同的 ViewController。

这是我正在尝试的代码:- 我已经尝试了所有这些也像 PresentModalViewController、dismissModalViewController、AddSubview、删除 superView...但结果是否定的:(我应该怎么做..？

几乎完整的代码:--

AppDelegate 类:-

- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification {
    if (notification){
        NSLog(@"In did Notification");
        NSString *reminderText = [notification.userInfo objectForKey:kRemindMeNotificationDataKey];
        [viewController showReminder:reminderText];
        application.applicationIconBadgeNumber = 0;
    }
}

setViewController.h :-

@interface SetAlarmViewController : UIViewController <UITableViewDataSource,UITableViewDelegate,UITextFieldDelegate,UIActionSheetDelegate>{

    IBOutlet UITableView *tableview;
    IBOutlet UIDatePicker *datePicker;
    IBOutlet UITextField *eventText;
    TPKeyboardAvoidingScrollView *scrollView;

    IBOutlet UINavigationBar *titleBar;
    IBOutlet UIButton *setAlarmButton;
    AVAudioPlayer *player;
    int index;
    The420DudeAppDelegate *appDelegate;
    TimeViewController *viewController;

   IBOutlet UIImageView *animatedImages;

    NSMutableArray *imageArray;
    AVPlayerItem *player1,*player3;
    AVPlayerItem *player2,*player4;
    AVQueuePlayer *queuePlayer;
}
@property (nonatomic, retain) IBOutlet UIImageView *animatedImages;

@property (nonatomic, retain) IBOutlet UITableView *tableview;
@property (nonatomic, retain) IBOutlet UIDatePicker *datePicker;
@property (nonatomic, retain) IBOutlet UITextField *eventText;
@property (nonatomic, retain) TPKeyboardAvoidingScrollView *scrollView;

@property(nonatomic, retain) IBOutlet UINavigationBar *titleBar;
@property(nonatomic, retain) IBOutlet UIButton *setAlarmButton;
@property(nonatomic) UIReturnKeyType returnKeyType;  

@property(nonatomic, retain) IBOutlet TimeViewController *viewController;

- (IBAction) scheduleAlarm:(id)sender;
- (void)showReminder:(NSString *)text;
-(IBAction)onTapHome;

-(IBAction)onTapChange:(id)sender;

@end

SetViewController.m :-

@synthesize datePicker,tableview, eventText,titleBar,setAlarmButton,returnKeyType,scrollView,animatedImages,viewController;


// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {

    [super viewDidLoad];

    appDelegate = (The420DudeAppDelegate *)[[UIApplication sharedApplication] delegate];
    eventText.returnKeyType = UIReturnKeyDone;

    viewController = [[TimeViewController alloc] initWithNibName:@"TimeViewController" bundle:nil];

    NSDate *now = [NSDate date];
    [datePicker setDate:now animated:YES];
    eventText.delegate = self;
    index = 0;

    NSString *path1 = [[NSBundle mainBundle] pathForResource:@"inhale" ofType:@"mp3"];
    NSURL *url1 = [NSURL fileURLWithPath:path1];
    player1 = [[AVPlayerItem alloc]initWithURL:url1];

    NSString *path3 = [[NSBundle mainBundle] pathForResource:@"sound1" ofType:@"wav"];
    NSURL *url3 = [NSURL fileURLWithPath:path3];
    player3 = [[AVPlayerItem alloc]initWithURL:url3];

    NSString *path2 = [[NSBundle mainBundle] pathForResource:@"exhale" ofType:@"mp3"];
    NSURL *url2 = [NSURL fileURLWithPath:path2];
    player2 = [[AVPlayerItem alloc]initWithURL:url2];

    NSString *path4 = [[NSBundle mainBundle] pathForResource:@"Dude" ofType:@"mp3"];
    NSURL *url4 = [NSURL fileURLWithPath:path4];
    player4 = [[AVPlayerItem alloc]initWithURL:url4];


    NSArray *items = [[NSArray alloc]initWithObjects:player1,player3,player2,player4,nil];
    queuePlayer = [[AVQueuePlayer alloc] initWithItems:items];    

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playEnded) name:AVPlayerItemDidPlayToEndTimeNotification object:player4];



}

-(void)onAlarmInvoke
{
    animatedImages = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 320, 100)];
    animatedImages.userInteractionEnabled = YES;
    [animatedImages setContentMode:UIViewContentModeScaleToFill];
    [self.view addSubview : animatedImages];

    [queuePlayer play];    

    // Array to hold jpg images
    imageArray = [[NSMutableArray alloc] initWithCapacity:IMAGE_COUNT];

    // Build array of images, cycling through image names
    for (int i = 1; i <= IMAGE_COUNT; i++)
        [imageArray addObject:[UIImage imageNamed:[NSString stringWithFormat:@"animation(%d).jpg", i]]];

    animatedImages.animationImages = [NSArray arrayWithArray:imageArray];

    // One cycle through all the images takes 1.0 seconds
    animatedImages.animationDuration = 12.0;

    // Repeat foreverlight electro / 4 sec.
    animatedImages.animationRepeatCount = -1;

    // Add subview and make window visible
    //  [self.view addSubview:animatedImages];

    animatedImages.image = [imageArray objectAtIndex:imageArray.count - 1];

    // Start it up
    [animatedImages startAnimating];



    // Wait 5 seconds, then stop animation
    [self performSelector:@selector(stopAnimation) withObject:nil afterDelay:15000];

}

-(void)playEnded
{   
    [self performSelector:@selector(playNextItem) withObject:nil afterDelay:5.0];
}

-(void)playNextItem
{
    [queuePlayer play];
}
-(void)textFieldDidBeginEditing:(UITextField *)textField
{
    [scrollView adjustOffsetToIdealIfNeeded];
}

-(void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:YES];
    [self.tableview reloadData];
}

- (IBAction) scheduleAlarm:(id)sender {
    [eventText resignFirstResponder];

    // Get the current date
    NSDate *pickerDate = [self.datePicker date];

    //   NSDate *selectedDate = [datePicker date]; // you don't need to alloc-init the variable first
    NSCalendar *cal = [NSCalendar currentCalendar];  
    NSDateComponents *dc = [cal components: (NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit) fromDate:pickerDate];
    pickerDate = [cal dateFromComponents:dc]; 

    NSLog(@"%@ is the date in picker date",pickerDate);

    UILocalNotification *localNotif = [[UILocalNotification alloc] init];
    if (localNotif == nil)
        return;
    localNotif.fireDate = pickerDate;
    //  NSLog(@"%@",localNotif.fireDate);
    localNotif.timeZone = [NSTimeZone defaultTimeZone];
    //  NSLog(@"%@",localNotif.timeZone);

    // Notification details
    localNotif.alertBody = [eventText text];

    // Set the action button
    localNotif.alertAction = @"Show me";
    localNotif.repeatInterval = NSDayCalendarUnit;
    localNotif.soundName = @"jet.wav";
    // Specify custom data for the notification
    NSDictionary *userDict = [NSDictionary dictionaryWithObject:eventText.text
                                                         forKey:kRemindMeNotificationDataKey];
    localNotif.userInfo = userDict;

    // Schedule the notification
    [[UIApplication sharedApplication] scheduleLocalNotification:localNotif];
    [localNotif release];

    [self.tableview reloadData];
    eventText.text = @"";

    viewController = [[TimeViewController alloc] initWithNibName:@"TimeViewController" bundle:nil];
    [self presentModalViewController:viewController animated:YES];
}


- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    index = indexPath.row;
    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Warning!!!" 
                                                        message:@"Are you sure you want to Delete???" delegate:self
                                              cancelButtonTitle:@"Cancel"
                                              otherButtonTitles:@"Ok",nil];
    [alertView show];
    [alertView release];

}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
    NSArray *notificationArray = [[UIApplication sharedApplication] scheduledLocalNotifications];
    UILocalNotification *notify = [notificationArray objectAtIndex:index];

    if(buttonIndex == 0)
    {
        // Do Nothing on Tapping Cancel...
    }
    if(buttonIndex ==1)
    {
        if(notify)
            [[UIApplication sharedApplication] cancelLocalNotification:notify];
    }
    [self.tableview reloadData];
}

// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
    }
    // Configure the cell...

    NSArray *notificationArray = [[UIApplication sharedApplication] scheduledLocalNotifications];
    UILocalNotification *notif = [notificationArray objectAtIndex:indexPath.row];

    [cell.textLabel setText:notif.alertBody];
    [cell.detailTextLabel setText:[notif.fireDate description]];    
    return cell;
}

- (void)viewDidUnload {
    datePicker = nil;
    tableview = nil;
    eventText = nil;
    [self setScrollView:nil];
    [super viewDidUnload];

}

- (void)showReminder:(NSString *)text {

    [self onAlarmInvoke];

    [self.view addSubview:viewController.view];

    UIActionSheet *actionSheet = [[UIActionSheet alloc]initWithTitle:nil delegate:self cancelButtonTitle:nil destructiveButtonTitle:@"Cancel" otherButtonTitles:nil];
    [actionSheet setActionSheetStyle:UIActionSheetStyleBlackTranslucent];
    CGRect rect = self.view.frame;
   // if(rect.origin.y <= 480)
  //      rect.origin.y +=20;

    self.view.frame = rect;
    [actionSheet showInView:self.view];
    [actionSheet release];


}
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex
{

    if(buttonIndex == 0)
    {
        [player stop];
        NSLog(@"OK Tapped");
    }
    if(buttonIndex ==  1)
    {
        [player stop];
        NSLog(@"Cancel Tapped");
    }

}

-(IBAction)onTapHome{
    viewController = [[TimeViewController alloc] initWithNibName:@"TimeViewController" bundle:nil];
    [self presentModalViewController:viewController animated:YES];
}

- (void)dealloc {
    [super dealloc];
    [datePicker release];
    [tableview release];
    [eventText release];
    [scrollView release];
}
-(IBAction)onTapChange:(id)sender{

    SetTimeViewController *viewC = [[SetTimeViewController alloc]initWithNibName:@"SetTimeViewController" bundle:nil];
    [self presentModalViewController:viewC animated:YES];
}
@end

最佳答案

您的 viewController 可能正在显示 View ，但如果屏幕上没有 SetViewController 的 View ，您将看不到它。您必须先转到 SetViewController，然后显示您的 TimeViewController。是这样吗，您想显示 SetViewController 但立即调用 showReminder: 方法？但仅来自 didReceiveLocalNotification:.

如果是这种情况，请在您的 SetViewControllers.h 中设置一个标志和一个文本属性，

BOOL isFromNotification;
NSString *notifText; 

并呈现 SetViewController，并设置标志

SetViewController *setViewController = [SetViewController alloc]........
setViewController.isFromNotification = YES;
setViewController.notifText = reminderText;
[self presentModalViewController animated:YES}

然后在 ViewDidAppear: 的 SetViewController 中

if(isFromNotification = YES){
  [self showReminders:notifText];
}

关于iphone - 在 Iphone 中从 Seconds ViewController 调用方法时显示第一个 ViewController，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/8738057/