I'm want to add button into UIImageView. Added button not active.
UIImageView *iview = [[UIImageView alloc] initWithImage:image];
iview.frame = [[UIScreen mainScreen] applicationFrame];
iview.contentMode = UIViewContentModeTopLeft;
UIButton *bview1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
bview1.frame = CGRectMake(0, 0, 200, 60);
bview1.center = CGPointMake(100, 100);
[bview1 addTarget:self action:#selector(buttonPress1:) forControlEvents:UIControlEventTouchUpInside];
[bview1 setTitle:#"Image Picker1" forState:UIControlStateNormal];
[iview addSubview:bview1];
[self.view addSubview:iview];
Handler:
- (void)buttonPress1:(id)sender
{
NSLog(#"1");
}
What's wrong?
Did you try:
iview.userInteractionEnabled = YES;
Related
I am creating a UIIimageView programtically than I create the UIView and in uiview I added two uibutton programtically but button selector method not working . I tried many thing but nothing happened . Here is my code
-(void) pagingFunc{
CGRect screen = [[UIScreen mainScreen] bounds];
CGFloat width = CGRectGetWidth(screen);
CGFloat height = CGRectGetHeight(screen);
//ScrollView Size and Contents
CGSize mxSize = CGSizeMake( [imgesArry count]*width , height-114);
[scrlView setContentSize : mxSize];
self.customView.translatesAutoresizingMaskIntoConstraints =YES;
self.customView.frame = CGRectMake(0, 0, mxSize.width, mxSize.height);
int incX = 0 ;
for( int i = 0; i < [imgesArry count]; i++)
{
PFObject *imageObject = [imgesArry objectAtIndex:i];
PFFile *file;
if (height == 480) {
file = [imageObject objectForKey:#"image4s"];
}
else{
file = [imageObject objectForKey:#"image6s"];
}
NSString * imgFile = [file url];
UIImageView* imagView = [[UIImageView alloc]initWithFrame : CGRectMake(incX,0,width ,height)];
imgView.userInteractionEnabled = YES;
[imagView sd_setImageWithURL:[NSURL URLWithString:imgFile] placeholderImage:[UIImage imageNamed:#"UserUpdationImageCell.png"]];
btnView = [[UIView alloc] initWithFrame:CGRectMake(incX, imagView.frame.size.height-60, width, 50)];
btnView.backgroundColor = [UIColor colorWithRed:0/255.0 green:0/255.0 blue:0/255.0 alpha:0.8];
UIButton *bckBtn = [UIButton buttonWithType:UIButtonTypeCustom];
[bckBtn addTarget:self
action:#selector(aMethod)
forControlEvents:UIControlEventTouchUpInside];
[bckBtn setTitle:#"Back" forState:UIControlStateNormal];
bckBtn.frame = CGRectMake(0 ,0, 160.0, 40.0);
UIButton *downloadBtn = [UIButton buttonWithType:UIButtonTypeCustom];
[downloadBtn addTarget:self
action:#selector(aMethod)
forControlEvents:UIControlEventTouchUpInside];
[downloadBtn setTitle:#"Download" forState:UIControlStateNormal];
downloadBtn.frame = CGRectMake(160 ,0, 160.0, 40.0);
[btnView addSubview:bckBtn];
[btnView addSubview:downloadBtn];
[self.customView addSubview:imagView];
[self.customView addSubview:btnView];
incX+= width;
}
[scrlView setContentOffset:CGPointMake(width*selectedIndex, 0)];
}
May be you can set : self.customView.userInteractionEnabled=YES;
I write a simple demo you describe and it works:
// imagView -> view1 -> bckBtn
UIImageView *imagView = [[UIImageView alloc]initWithFrame:CGRectMake(100, 100, 200, 200)];
imagView.userInteractionEnabled = YES;
imagView.backgroundColor = [UIColor grayColor];
[self.view addSubview:imagView];
UIView *view1 = [[UIView alloc] initWithFrame:CGRectMake(50, 50, 100, 100)];
view1.backgroundColor = [UIColor yellowColor];
[imagView addSubview:view1];
UIButton *bckBtn = [UIButton buttonWithType:UIButtonTypeCustom];
bckBtn.frame = CGRectMake(10, 10, 50, 50);
bckBtn.backgroundColor = [UIColor redColor];
[bckBtn addTarget:self
action:#selector(aMethod)
forControlEvents:UIControlEventTouchUpInside];
[bckBtn setTitle:#"Back" forState:UIControlStateNormal];
[view1 addSubview:bckBtn];
-(void)aMethod{
NSLog(#"button click");
}
Hope it helps.
Well 1st thing, make sure you don't have any overlays over buttons.
Also you might try using GestureRecognizers.
Here's a Swift snippet, I'm pretty sure it can be translated to obj-c
let xButton = UIButton(frame: CGRect(x: 0, y: 0, width: 160, height: 40))
xButton.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(aMethod)))
In my project I want to show a first run view when starting the app for te first time. To do this I added a UIView to my mainViewCntroller.m. To dismiss this (overlayed) view I put a button on the view called acceptButton. What code do I have to add to the Button to remove this view from the stack?
What do I do wrong?
Here's my code:
- (void) firstRun {
if (((AppDelegate*)[UIApplication sharedApplication].delegate).firstRun)
{
CGFloat height = [[UIScreen mainScreen] bounds].size.height;
CGFloat width = [[UIScreen mainScreen] bounds].size.width;
NSLog(#"%f", height);
CGRect myFrame = CGRectMake(0, 0, width, height);
UIView *myView = [[UIView alloc] initWithFrame:myFrame];
myView.backgroundColor = [UIColor scrollViewTexturedBackgroundColor];
myView.tag = 12345;
[self.view addSubview:myView];
// Create a ScrollView and a label
UIScrollView *discScroll = [[UIScrollView alloc] initWithFrame:CGRectMake(20.0f, 0.0f, self.view.frame.size.width - 20, self.view.frame.size.height -70)];
discScroll.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
UILabel *discLabel = [[UILabel alloc] initWithFrame:CGRectMake(0,0,0,0)];
discLabel.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
NSString *labelText = NSLocalizedString (#"InfoText",#"");
[discLabel setText:labelText];
// Tell the label to use an unlimited number of lines
[discLabel setNumberOfLines:0];
[discLabel setNumberOfLines:0];
[discLabel setBackgroundColor:[UIColor clearColor]];
[discLabel setFont:[UIFont boldSystemFontOfSize:17]];
discLabel.textColor = [UIColor colorWithRed:255 green:255 blue:255 alpha:1.0];
//[infoLabel sizeToFit];
CGSize infoLabelSize = [discLabel.text sizeWithFont:discLabel.font
constrainedToSize:CGSizeMake(discScroll.frame.size.width, 5000)
lineBreakMode:UILineBreakModeWordWrap];
discLabel.frame = CGRectMake(0, 0, infoLabelSize.width, infoLabelSize.height);
discScroll.contentSize = infoLabelSize;
[discScroll addSubview:discLabel];
[self.view addSubview:discScroll];
UIButton *acceptButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
acceptButton.frame = CGRectMake(110, [[UIScreen mainScreen] bounds].size.height - 74, 100, 44);
// position in the parent view and set the size of the button
[acceptButton setTitle:#"Click Me!" forState:UIControlStateNormal];
// add targets and actions
[acceptButton addTarget:self action:#selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
// add to a view
[self.view addSubview:acceptButton];
}
}
-(IBAction)buttonClicked:(id)sender
{
[[self.myView viewWithTag:12345] removeFromSuperview];
}
In my mainViewController.h is the following property:
#property (weak, nonatomic) IBOutlet UIView *myView;
EDIT I've post the complete code. Maybe something else is in the way.
Ive written it in Xcode, following Code works for me.
Ive opened a new XCode Project (Single View based), and just added following Code:
- (void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
UIView *myView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
myView.backgroundColor = [UIColor scrollViewTexturedBackgroundColor];
myView.tag = 12345;
[self.view addSubview:myView];
UIButton *acceptButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
acceptButton.frame = CGRectMake(0, 0, 100, 44);
[acceptButton setTitle:#"Click Me!" forState:UIControlStateNormal];
[acceptButton addTarget:self action:#selector(buttonClicked) forControlEvents:UIControlEventTouchUpInside];
[myView addSubview:acceptButton];
[myView release];
}
- (void)buttonClicked{
[[self.view viewWithTag:12345] removeFromSuperview];
}
This worked for me in iPhone Simulator.... Just this code in the MainViewController.m nothing else... Just give it a try, hope it works for you too :-)
[acceptButton addTarget:self action:#selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
when your method is called acceptButton, change to
[acceptButton addTarget:self action:#selector(acceptButton:) forControlEvents:UIControlEventTouchUpInside];
your target is set to buttonClicked but you are using acceptButton
[acceptButton addTarget:self action:#selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
-(IBAction)buttonClicked:(id)sender
{
[self.myView removeFromSuperview];
}
The problem lies with the [acceptButton addTarget:self action:#selector(buttonClicked:) line. Change buttonClicked to your method acceptButton: in that call.
[acceptButton addTarget:self action:#selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
The exception is clear, there is no function named "buttonClicked"
Just change the part of your code with below code;
[acceptButton addTarget:self action:#selector(acceptButton:) forControlEvents:UIControlEventTouchUpInside];
just give it a tag...
UIView *myView = [[UIView alloc] initWithFrame:myFrame];
myView.backgroundColor = [UIColor scrollViewTexturedBackgroundColor];
myView.tag = 12345;
[self.view addSubview:myView];
[myView release];
-(IBAction)acceptButton:(id)sender{
[[self.view viewWithTag:12345] removeFromSuperview];
}
Also change
action:#selector(buttonClicked:)
to
action:#selector(acceptButton:)
Want to show UIButton done on UIScrollView for images. With the below code UIButton is showing but when I scroll UIImageViews, it shows only on very first imageview where as I want UIButton done should show on all image views in UIScrollView.
- (void)viewDidLoad
{
self.view.backgroundColor = [UIColor blackColor];
UIScrollView *imageScrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
UIButton *myButton = [UIButton buttonWithType:UIButtonTypeCustom];
[myButton addTarget:self action:#selector(dismissView:) forControlEvents:UIControlEventTouchUpInside];
myButton.frame = CGRectMake(0, 0, 60, 35);
[myButton.layer setMasksToBounds:YES];
[myButton.layer setCornerRadius:10.0f];
myButton.layer.borderWidth = 2;
myButton.layer.borderColor = [[UIColor whiteColor] CGColor];
[myButton setTitle:#"Done" forState:UIControlStateNormal];
myButton.backgroundColor = [UIColor blackColor];
UIBarButtonItem *button = [[UIBarButtonItem alloc] initWithCustomView:myButton];
[[self navigationItem] setRightBarButtonItem:button animated:YES];
imageScrollView.pagingEnabled = YES;
NSInteger numberOfViews = 61;
for (int i = 0; i < numberOfViews; i++) {
CGFloat xOrigin = i * self.view.frame.size.width;
NSString *imageName = [NSString stringWithFormat:#"image%d.png", i];
UIImage *image = [UIImage imageNamed:imageName];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
imageView.frame = CGRectMake(xOrigin, 0, self.view.frame.size.width, self.view.frame.size.height);
[imageScrollView addSubview:imageView];
[imageScrollView addSubview:myButton];
[imageView release];
}
imageScrollView.contentSize = CGSizeMake(self.view.frame.size.width * numberOfViews, self.view.frame.size.height);
[self.view addSubview:imageScrollView];
[imageScrollView release];
}
How should I code it that UIButton Done should show on all image views when I scroll it.
Add your UIButton in for loop i.e. it can add each time when your new ImageView is add.
And change its x_Origin for each imageView -
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
UIScrollView *imageScrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
imageScrollView.pagingEnabled = YES;
NSInteger numberOfViews = 61;
for (int i = 0; i < numberOfViews; i++)
{
CGFloat xOrigin = i * self.view.frame.size.width;
UIButton *myButton = [UIButton buttonWithType:UIButtonTypeCustom];
[myButton addTarget:self action:#selector(dismissView) forControlEvents:UIControlEventTouchUpInside];
myButton.frame = CGRectMake(xOrigin, 0, 60, 35);
[myButton setTitle:#"Done" forState:UIControlStateNormal];
myButton.backgroundColor = [UIColor blackColor];
[myButton.layer setMasksToBounds:YES];
[myButton.layer setCornerRadius:10.0f];
myButton.layer.borderWidth = 2;
myButton.layer.borderColor = [[UIColor whiteColor] CGColor];
NSString *imageName = [NSString stringWithFormat:#"image%d.png", i];
UIImage *image = [UIImage imageNamed:imageName];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
imageView.frame = CGRectMake(xOrigin, 0, self.view.frame.size.width, self.view.frame.size.height);
[imageScrollView addSubview:imageView];
[imageScrollView addSubview:myButton];
}
imageScrollView.contentSize = CGSizeMake(self.view.frame.size.width * numberOfViews, self.view.frame.size.height);
[self.view addSubview:imageScrollView];
}
Remove these 2 lines
UIBarButtonItem *button = [[UIBarButtonItem alloc] initWithCustomView:myButton];
[[self navigationItem] setRightBarButtonItem:button animated:YES];
There is no need to do this. This means you're setting that button on rightBarButton of NavigationBar but in your case i think you dont want to do so.
Set frame for myButton in for loop similar to imageview frame.
myButton.frame= CGRectMake(xOrigin, 0, self.myButton.frame.size.width, self.myButton.frame.size.height);
I am trying to add uibutton inside the imageview.
But it was not displayed the button.
Even i tried adding it to the uiscrollview and also for self.view.
But nothing were displayed the uibutton
Pls let me know what is the problem
const CGFloat HEIGHT = 1024.0;
const CGFloat WIDTH = 768.0;
#define myViewPortrait CGRectMake(0.0f, 0.0f, 768.0f,1024.0f)
#define myViewLandSacpe CGRectMake(0.0f, 0.0f, 1024.0f,768.0f)
#define kAnimationKey #"animationKey"
-(void)layoutScrollImages
{
UIImageView *view = nil;
NSArray *subviews = [myScrollView subviews];
CGFloat curXLoc = 0;
for (view in subviews)
{
if ([view isKindOfClass:[UIImageView class]] && view.tag > 0)
{
CGRect frame = view.frame;
frame.origin = CGPointMake(curXLoc, 0);
view.frame = frame;
curXLoc += (self.view.frame.size.width);
}
}
[myScrollView setContentSize:CGSizeMake((myImagesCount * self.view.frame.size.width), [myScrollView bounds].size.height)];
}
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
self.view.backgroundColor = [UIColor viewFlipsideBackgroundColor];
myScrollView = [[UIScrollView alloc] initWithFrame:
CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
[self.view addSubview:myScrollView];
UISwipeGestureRecognizer *rightRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(rightSwipeHandle:)];
rightRecognizer.direction = UISwipeGestureRecognizerDirectionRight;
rightRecognizer.numberOfTouchesRequired = 1;
[rightRecognizer setDelegate:self];
[myScrollView addGestureRecognizer:rightRecognizer];
[rightRecognizer release];
UISwipeGestureRecognizer *leftRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(leftSwipeHandle:)];
leftRecognizer.direction = UISwipeGestureRecognizerDirectionLeft;
leftRecognizer.numberOfTouchesRequired = 1;
[leftRecognizer setDelegate:self];
[myScrollView addGestureRecognizer:leftRecognizer];
[leftRecognizer release];
[myScrollView setBackgroundColor:[UIColor blackColor]];
[myScrollView setCanCancelContentTouches:NO];
myScrollView.indicatorStyle = UIScrollViewIndicatorStyleWhite;
myScrollView.clipsToBounds = YES;
myScrollView.scrollEnabled = YES;
myScrollView.pagingEnabled = YES;
myScrollView.delegate = self;
myImagesCount = 5;
myScrollView.showsHorizontalScrollIndicator=NO;
myScrollView.showsVerticalScrollIndicator=NO;
for (int i = 1; i <= myImagesCount; i++)
{
NSString *imageName = [NSString stringWithFormat:#"screen-%d.jpg", i];
UIImage *image = [UIImage imageNamed:imageName];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
CGRect rect = imageView.frame;
rect.size.height = myScrollView.frame.size.height;
NSLog(#"%d -----",self.view.frame.size.width);
rect.size.width = myScrollView.frame.size.width;
imageView.frame = rect;
imageView.tag = i;
[myScrollView addSubview:imageView];
[imageView release];
}
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button addTarget:self action:#selector(buttonHandler) forControlEvents:UIControlEventAllEvents];
[button setTitle:#"point" forState:UIControlStateNormal];
button.frame = CGRectMake(0.0, 0.0, 100.0, 40.0);
button.backgroundColor = [UIColor blackColor];
[self.view addSubview:button];
[self layoutScrollImages];
[super viewDidLoad];
}
Based off your question, you'd like to add the UIButton as a subview to the UIImageView - I'm guessing in the for loop? Immediate problem I see is that the actual button is being generated outside of the for loop. I think your for loop is intended to look like this:
for (int i = 1; i <= myImagesCount; i++)
{
NSString *imageName = [NSString stringWithFormat:#"screen-%d.jpg", i];
UIImage *image = [UIImage imageNamed:imageName];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button addTarget:self action:#selector(buttonHandler) forControlEvents:UIControlEventAllEvents];
[button setTitle:#"point" forState:UIControlStateNormal];
button.frame = CGRectMake(0.0, 0.0, 100.0, 40.0);
button.backgroundColor = [UIColor blackColor];
CGRect rect = imageView.frame;
rect.size.height = myScrollView.frame.size.height;
NSLog(#"%d -----",self.view.frame.size.width);
rect.size.width = myScrollView.frame.size.width;
imageView.frame = rect;
imageView.tag = i;
[imageView addSubview:button];
[myScrollView addSubview:imageView];
[imageView release];
}
Try this
Declare button globally and set
[self layoutScrollImages];
[self.view bringSubViewToFront:button];
I have a UIView Subclass that has a frame/image with buttons in it. I'm trying to add it to my view controller however when I do it shows up but none of the buttons will register ANY touches.
Here is my UIView Subclass.
#import "ControlView.h"
#implementation ControlView
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
CGRect slideFrame = CGRectMake(0, 402, 320, 82);
slider = [[UIView alloc] initWithFrame:slideFrame];
slider.backgroundColor = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:#"shelf.png"]];
[self addSubview:slider];
UIImage *btnImage = [UIImage imageNamed:#"NavBar_01.png"];
UIImage *btnImageSelected = [UIImage imageNamed:#"NavBar_01_s.png"];
btnImage = [UIImage imageNamed:#"NavBar_01.png"];
btnImageSelected = [UIImage imageNamed:#"NavBar_01_s.png"];
btn1 = [UIButton buttonWithType:UIButtonTypeCustom];
btn1.frame = CGRectMake(12, 28, 70, 50);
[btn1 setBackgroundImage:btnImage forState:UIControlStateNormal];
[btn1 setBackgroundImage:btnImageSelected forState:UIControlStateSelected];
[slider addSubview:btn1];
[slider bringSubviewToFront:btn1];
[btn1 addTarget:self action:#selector(home) forControlEvents:UIControlEventTouchUpInside];
btnImage = [UIImage imageNamed:#"NavBar_02.png"];
btnImageSelected = [UIImage imageNamed:#"NavBar_02_s.png"];
btn2 = [UIButton buttonWithType:UIButtonTypeCustom];
btn2.frame = CGRectMake(87, 28, 70, 50);
[btn2 setBackgroundImage:btnImage forState:UIControlStateNormal];
[btn2 setBackgroundImage:btnImageSelected forState:UIControlStateSelected];
[slider addSubview:btn2];
[slider bringSubviewToFront:btn2];
// [btn2 addTarget:self action:#selector() forControlEvents:UIControlEventTouchUpInside];
btnImage = [UIImage imageNamed:#"NavBar_03.png"];
btnImageSelected = [UIImage imageNamed:#"NavBar_03_s.png"];
btn3 = [UIButton buttonWithType:UIButtonTypeCustom];
btn3.frame = CGRectMake(162, 28, 70, 50);
[btn3 setBackgroundImage:btnImage forState:UIControlStateNormal];
[btn3 setBackgroundImage:btnImageSelected forState:UIControlStateSelected];
[slider addSubview:btn3];
[slider bringSubviewToFront:btn3];
// [btn3 addTarget:self action:#selector() forControlEvents:UIControlEventTouchUpInside];
btnImage = [UIImage imageNamed:#"NavBar_04.png"];
btnImageSelected = [UIImage imageNamed:#"NavBar_04_s.png"];
btn4 = [UIButton buttonWithType:UIButtonTypeCustom];
btn4.frame = CGRectMake(237, 28, 70, 50);
[btn4 setBackgroundImage:btnImage forState:UIControlStateNormal];
[btn4 setBackgroundImage:btnImageSelected forState:UIControlStateSelected];
[slider addSubview:btn4];
[slider bringSubviewToFront:btn4];
// [btn4 addTarget:self action:#selector() forControlEvents:UIControlEventTouchUpInside];
UISwipeGestureRecognizer *recognizer;
recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(slideUp)];
[recognizer setDirection:(UISwipeGestureRecognizerDirectionUp)];
[self addGestureRecognizer:recognizer];
recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(slideDown)];
[recognizer setDirection:(UISwipeGestureRecognizerDirectionDown)];
[self addGestureRecognizer:recognizer];
}
return self;
}
-(void)slideUp
{
// Slide up based on y axis
CGRect frame = slider.frame;
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:.75];
frame.origin.y = 320;
slider.frame = frame;
[UIView commitAnimations];
}
-(void)slideDown
{
CGRect frame = slider.frame;
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:.75];
frame.origin.y = 425;
slider.frame = frame;
[UIView commitAnimations];
}
/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect
{
// Drawing code
}
*/
#end
And this is how I'm adding it to my ViewController.
ControlView *cont = [[ControlView alloc]init];
[homeView.view addSubview:cont];
I tried adding the same code to a ViewController and the buttons etc.. worked so I'm sure this is something simple/stupid with Delegates/Self etc.. between the subview and the ViewController however I have a mental block.
You are doing this?
ControlView *cont = [[ControlView alloc]init];
you are supposed to do
ControlView *cont = [[ControlView alloc]initWithFrame:self.view.frame];