How to delete label that created programmatically? - iphone

Question

I am creating two label programmatically using this code..
-(void)addLabel:(id)sender
{
ExampleAppDataObject* theDataObject = [self theAppDataObject];
theDataObject.count = theDataObject.count+1;
NSLog(#"count is :%i",theDataObject.count);
if (theDataObject.count == 2) {
addLabel.enabled = NO;
}
if (theDataObject.count == 1) {
CGRect imageFrame = CGRectMake(10, 10, 150, 80);
labelResizableView = [[UserResizableView alloc] initWithFrame:imageFrame];
blabel = [[UILabel alloc] initWithFrame:CGRectMake(10, 35, 100, 100)];
blabel.text = #"Write here";
//alabel.text = self.newsAsset.title;
blabel.adjustsFontSizeToFitWidth = NO;
blabel.autoresizingMask = UIViewAutoresizingFlexibleWidth;
blabel.font = [UIFont boldSystemFontOfSize:18.0];
blabel.textColor = [UIColor blueColor];
// alabel.shadowColor = [UIColor whiteColor];
// alabel.shadowOffset = CGSizeMake(0, 1);
blabel.backgroundColor = [UIColor clearColor];
blabel.lineBreakMode = UILineBreakModeWordWrap;
blabel.numberOfLines = 10;
blabel.minimumFontSize = 8.;
blabel.adjustsFontSizeToFitWidth = YES;
[blabel sizeToFit];
labelResizableView.autoresizingMask = UIViewAutoresizingFlexibleWidth;
// enable touch delivery
blabel.userInteractionEnabled = YES;
//tao gasture recognizer for label
UITapGestureRecognizer *doubleTap =[[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(blabelTap:)];
doubleTap.numberOfTapsRequired = 2;
[blabel addGestureRecognizer:doubleTap];
UILongPressGestureRecognizer *longPressGesture = [[UILongPressGestureRecognizer alloc]
initWithTarget:self
action:#selector(longPress:)];
[longPressGesture setMinimumPressDuration:1];
[blabel addGestureRecognizer:longPressGesture];
//Calculate the expected size based on the font and linebreak mode of your label
CGSize maximumLabelSize = CGSizeMake(296,9999);
CGSize expectedLabelSize = [greetString sizeWithFont:blabel.font
constrainedToSize:maximumLabelSize
lineBreakMode:blabel.lineBreakMode];
//adjust the label the the new height.
CGRect newFrame = blabel.frame;
newFrame.size.height = expectedLabelSize.height+40;
newFrame.size.width = expectedLabelSize.width+40;
blabel.frame = newFrame;
labelResizableView.frame = newFrame;
labelResizableView.contentView = blabel;
labelResizableView.delegate = self;
labelResizableView.tag =2;
[self.view addSubview:labelResizableView];
}else if (theDataObject.count == 2) {
CGRect imageFrame = CGRectMake(10, 10, 150, 80);
labelResizableView = [[UserResizableView alloc] initWithFrame:imageFrame];
clabel = [[UILabel alloc] initWithFrame:CGRectMake(10, 35, 100, 100)];
clabel.text = #"Write here";
//alabel.text = self.newsAsset.title;
clabel.adjustsFontSizeToFitWidth = NO;
clabel.autoresizingMask = UIViewAutoresizingFlexibleWidth;
clabel.font = [UIFont boldSystemFontOfSize:18.0];
clabel.textColor = [UIColor blueColor];
// alabel.shadowColor = [UIColor whiteColor];
// alabel.shadowOffset = CGSizeMake(0, 1);
clabel.backgroundColor = [UIColor clearColor];
clabel.lineBreakMode = UILineBreakModeWordWrap;
clabel.numberOfLines = 10;
clabel.minimumFontSize = 8.;
clabel.adjustsFontSizeToFitWidth = YES;
[clabel sizeToFit];
labelResizableView.autoresizingMask = UIViewAutoresizingFlexibleWidth;
// enable touch delivery
clabel.userInteractionEnabled = YES;
//tao gasture recognizer for label
UITapGestureRecognizer *doubleTap =[[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(clabelTap:)];
doubleTap.numberOfTapsRequired = 2;
[clabel addGestureRecognizer:doubleTap];
UILongPressGestureRecognizer *longPressGesture = [[UILongPressGestureRecognizer alloc]
initWithTarget:self
action:#selector(longPress:)];
[longPressGesture setMinimumPressDuration:1];
[clabel addGestureRecognizer:longPressGesture];
//Calculate the expected size based on the font and linebreak mode of your label
CGSize maximumLabelSize = CGSizeMake(296,9999);
CGSize expectedLabelSize = [greetString sizeWithFont:clabel.font
constrainedToSize:maximumLabelSize
lineBreakMode:clabel.lineBreakMode];
//adjust the label the the new height.
CGRect newFrame = blabel.frame;
newFrame.size.height = expectedLabelSize.height+40;
newFrame.size.width = expectedLabelSize.width+40;
clabel.frame = newFrame;
labelResizableView.frame = newFrame;
labelResizableView.contentView = clabel;
labelResizableView.delegate = self;
labelResizableView.tag=3;
[self.view addSubview:labelResizableView];
}
}
And when user long press button than it will be deleted...
- (void)longPress:(UILongPressGestureRecognizer *)longPressGesture {
if (longPressGesture.state == UIGestureRecognizerStateEnded) {
//NSLog(#"Long press Ended");
// NSLog(#"blabel long pressed");
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Delete Label" message:#"Want delete label" delegate:self cancelButtonTitle:#"No" otherButtonTitles:#"Yes",nil];
[alert show];
}
else {
//NSLog(#"Long press detected.");
}
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
NSString *title = [alertView buttonTitleAtIndex:buttonIndex];
if([title isEqualToString:#"Yes"])
{
ExampleAppDataObject* theDataObject = [self theAppDataObject];
if (theDataObject.count!=0) {
theDataObject.count = theDataObject.count-1;
}
addLabel.enabled = YES;
[labelResizableView removeFromSuperview];
// NSLog(#"yes btn tapped");
}
}
but now when i longpree blabel than still clabel is deleted and it will never delete blabel.thanx in advance.

Answer 1

Use the Tag property to remove the labelResizableView.
-(void)addLabel:(id)sender
{
labelResizableView = [[UserResizableView alloc] initWithFrame:imageFrame];
labelResizableView.tag = 100;
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
NSString *title = [alertView buttonTitleAtIndex:buttonIndex];
if([title isEqualToString:#"Yes"])
{
ExampleAppDataObject* theDataObject = [self theAppDataObject];
if (theDataObject.count!=0) {
theDataObject.count = theDataObject.count-1;
}
addLabel.enabled = YES;
UILabel *tempLabel = (UILabel *)[self.view viewWithTag:100];
if(tempLabel)
[tempLabel removeFromSuperview];
}
}

Answer 2

hope this code help you :)
NSArray *subArray = [self.view subviews];
if([subArray count] != 0) {
for(int i = 0 ; i < [subArray count] ; i++) {
[[subArray objectAtIndex:i] removeFromSuperview];
}
}

Answer 3

To add control in your view:
[self.view addsubview:yourcontrolid];
ex:
[self.view addsubview:labelid];
To add control from your view:
[controlid removefromsuperview];
ex
[labelid removefromsuperview];

Answer 4

you are adding with :
[self.view addSubview:labelResizableView];
than remove it the labelResizableView, and release the clabel or blabel, whatever is in your case.
Maybe this gives an example

Answer 5

It is because your code
else if (theDataObject.count == 2) {
is calling and in this code you are adding
labelResizableView.contentView = clabel;
and then you are adding this to you view
[self.view addSubview:labelResizableView];
So when you are deleting labelResizableView
[labelResizableView removeFromSuperview];
So the result is you are adding labelResizableView 2 times and remove the labelResizableView which have clabel.