IOS 5.1 ARC Unrecognized Selector Sent to Instance - objective-c

Question

I have been looking at similar question but couldn't figure it out what is the problem.It seems it should work but it gives me error.
In IOS 5.1 Ipad Stortyboard application I have a right navigation bar item when user click a popover view should open. I had a working popover view but design was not good so I replaced it with a new popover class now it gives me following error
-[UIButton view]: unrecognized selector sent to instance 0xa17ba80
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIButton view]: unrecognized selector sent to instance 0xa17ba80'
I have tried following functions but none has worked so far. It gives me similar errors when I change the code.
- (IBAction)setColorButtonTapped:(id)sender{
- (void)setColorButtonTapped:(id)sender{
- (IBAction)setColorButtonTapped:(id)sender forEvent:(UIEvent*)event {
- (void)setColorButtonTapped:(id)sender forEvent:(UIEvent*)event {
and ofcourse I have changed ti following regarding to ibaction or void
[backButton2 addTarget:self action:#selector(setColorButtonTapped:) forControlEvents:UIControlEventTouchUpInside];
here is the code
my.h file
#import <UIKit/UIKit.h>
#import "ColorPickerController.h"
#interface MeetingViewController : UITableViewController<UIApplicationDelegate,UIAlertViewDelegate,DropDownListDelegate,MFMailComposeViewControllerDelegate,EGORefreshTableHeaderDelegate,ColorPickerDelegate>{
UIPopoverController *_popover;
ColorPickerController *_colorPicker;
UIPopoverController *_colorPickerPopover;
}
#property (nonatomic, strong) UIPopoverController *popover;
#property (nonatomic, strong) ColorPickerController *colorPicker;
#property (nonatomic, strong) UIPopoverController *colorPickerPopover;
- (IBAction)setColorButtonTapped:(id)sender;
#end
my.m file
#synthesize popover = _popover;
#synthesize colorPicker = _colorPicker;
#synthesize colorPickerPopover = _colorPickerPopover;
- (void)viewDidLoad
{
[super viewDidLoad];
//gear button on navigation Bar
UIImage* imageback2 = [UIImage imageNamed:#"ICON - Gear#2x.png"];
CGRect frameimgback2 = CGRectMake(0, 0, 40, 40);
UIButton *backButton2 = [[UIButton alloc] initWithFrame:frameimgback2];
[backButton2 setBackgroundImage:imageback2 forState:UIControlStateNormal];
[backButton2 addTarget:self
action:#selector(setColorButtonTapped:)
forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *btn2 = [[UIBarButtonItem alloc] initWithCustomView:backButton2];
self.navigationItem.rightBarButtonItem = btn2;
}
#pragma mark ColorPickerDelegate
- (void)colorSelected:(NSString *)color {
[self.colorPickerPopover dismissPopoverAnimated:YES];
}
#pragma mark Callbacks
- (IBAction)setColorButtonTapped:(id)sender {
if (_colorPicker == nil) {
self.colorPicker = [[ColorPickerController alloc] initWithStyle:UITableViewStylePlain];
_colorPicker.delegate = self;
self.colorPickerPopover = [[UIPopoverController alloc] initWithContentViewController:_colorPicker];
}
[self.colorPickerPopover presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
}
utility class
ColorPickerController.h
#import <UIKit/UIKit.h>
#protocol ColorPickerDelegate
- (void)colorSelected:(NSString *)color;
#end
#interface ColorPickerController : UITableViewController {
NSMutableArray *_colors;
id<ColorPickerDelegate> __weak _delegate;
}
#property (nonatomic, strong) NSMutableArray *colors;
#property (nonatomic, weak) id<ColorPickerDelegate> delegate;
#end
utilityclass
ColorPickerController.m
#import "ColorPickerController.h"
#implementation ColorPickerController
#synthesize colors = _colors;
#synthesize delegate = _delegate;
#pragma mark -
#pragma mark Initialization
/*
- (id)initWithStyle:(UITableViewStyle)style {
// Override initWithStyle: if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
if ((self = [super initWithStyle:style])) {
}
return self;
}
*/
#pragma mark -
#pragma mark View lifecycle
- (void)viewDidLoad {
[super viewDidLoad];
self.clearsSelectionOnViewWillAppear = NO;
self.contentSizeForViewInPopover = CGSizeMake(150.0, 140.0);
self.colors = [NSMutableArray array];
[_colors addObject:#"Red"];
[_colors addObject:#"Green"];
[_colors addObject:#"Blue"];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Override to allow orientations other than the default portrait orientation.
return YES;
}
#pragma mark -
#pragma mark Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
// Return the number of rows in the section.
return [_colors count];
}
// 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:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
// Configure the cell...
NSString *color = [_colors objectAtIndex:indexPath.row];
cell.textLabel.text = color;
return cell;
}
#pragma mark -
#pragma mark Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
if (_delegate != nil) {
NSString *color = [_colors objectAtIndex:indexPath.row];
[_delegate colorSelected:color];
}
}
#pragma mark -
#pragma mark Memory management
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Relinquish ownership any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload {
// Relinquish ownership of anything that can be recreated in viewDidLoad or on demand.
// For example: self.myOutlet = nil;
}
- (void)dealloc {
self.delegate = nil;
}
#end
Help is much appreciated , thanks

Answer 1

You're using a UIButton as a customView for a UIBarButtonItem. This could be the problem.
I suggest you use UIBarButtonItem's initWithImage:style:target:action: initializer instead.

Answer 2

UIButton is a view and as such has no view property or instance method.