Question

In my iOS app when a button is pressed an event is initiated and at the bottom of the screen appears a status message informing the user about a successful or failed operation.

The status message appear and disappear with the following code.

this one show the message

- (void) showMessage:(NSString*)text
{
        CGRect frame = [[self view] frame];

        if(statusView == nil)
        {
            messageViewWindow = [[UIWindow alloc] initWithFrame:CGRectMake(0, frame.size.height-29,
                                                       frame.size.width, 0)];


            statusView = [[StatusMessageView alloc] initWithFrame:CGRectMake(0, 0, frame.size.width, 0)
                                                             Text:text
                                                 andShowIndicator:NO];
            [messageViewWindow addSubview:statusView];
            [messageViewWindow makeKeyAndVisible];
        }

        UILabel *label = [statusView getTextLabel]; 
        UIImageView *imageView = [statusView getBackImageView];

        CGSize stringSize = [text sizeWithFont:[Constants getLabelFont]];
        int xCoordinate = (messageViewWindow.frame.size.width - stringSize.width)/2;

        [UIView beginAnimations:nil context:nil];
        messageViewWindow.frame = CGRectMake(0, frame.size.height-59, frame.size.width, 30);
        statusView.frame = CGRectMake(0, 0, frame.size.width, 30);
        label.frame = CGRectMake(xCoordinate,5,stringSize.width,20);
        imageView.frame = CGRectMake(0, 0, frame.size.width, 30);
        [UIView commitAnimations];  

        [NSTimer scheduledTimerWithTimeInterval:2.0f target:self selector:@selector(hideMessage) userInfo:nil repeats:NO];

}

and this one hides the message

- (void) hideMessage
{
    UILabel *label = [statusView getTextLabel]; 
    UIImageView *imageView = [statusView getBackImageView];

    CGRect labelFrame = label.frame;

    [UIView beginAnimations:nil context:nil];
    messageViewWindow.frame = CGRectMake(0, [UIScreen mainScreen].applicationFrame.size.height-29, [UIScreen mainScreen].applicationFrame.size.width, 0);
    statusView.frame = CGRectMake(0, 0, [UIScreen mainScreen].applicationFrame.size.width, 0);  
    label.frame = CGRectMake(labelFrame.origin.x, 0, labelFrame.origin.y, 0);
    imageView.frame = CGRectMake(0, 0, [UIScreen mainScreen].applicationFrame.size.width, 0);
    [UIView commitAnimations];
}

strange thing is that the message is shown and after two seconds dissapears, however the main window lost functionality, like the copy and paste ability.

Do you see something wrong in my methods? Is there any certain way, calling the “animations” code?

Answer 1

Since you are writing [messageViewWindow makeKeyAndVisible];, you have to write [self.view.window makeKeyAndVisible] in hideMessage to let the self.view.window handle all the userinteraction again.