UIActionSheet Crashes on iPad / not iPhone

Question

When I look in the console I get this message

2010-09-18 17:04:05.284 Wasted Time[8998:207] *** Assertion failure in -[UIActionSheet showInView:], /SourceCache/UIKit_Sim/UIKit-1145.66/UIAlert.m:7073
2010-09-18 17:04:05.286 Wasted Time[8998:207] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid parameter not satisfying: view != nil'
2010-09-18 17:04:05.286 Wasted Time[8998:207] Stack: (
    42272848,
    43430700,
    42010379,
    811796,
    3796273,
    3862560,
    9631,
    3616645,
    3688229,
    3682846,
    3690662,
    3686119,
    4983946,
    71264534,
    71263781,
    71207378,
    71206706,
    3003734,
    3030334,
    3011831,
    3043800,
    51265916,
    41552028,
    41547944,
    3002913,
    3036018,
    8314
)
terminate called after throwing an instance of 'NSException'

The code is as follows:

- (void)viewDidLoad {
    BOOL    continueYesNo;
    NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
    continueYesNo = [prefs boolForKey:@"keyContinueMeeting"];   
    if (continueYesNo) {
        NSString *message_continue = [[NSString alloc] initWithFormat:@"Do you want to Continue the Prior Meeting"];
        UIActionSheet *actionSheet = [[UIActionSheet alloc] 
            initWithTitle:message_continue 
            delegate:self
            cancelButtonTitle:@"Reset" 
            destructiveButtonTitle:@"Continue"
            otherButtonTitles:nil];
        [actionSheet showInView:self.view];
        [actionSheet release];
        [message_continue release];
    }
}

It runs fine both in the iPhone and in the iPhone simulator, but crashes in the iPad simulator.

Answer 1

The error message says:

Invalid parameter not satisfying: view != nil

Likely from this line:

[actionSheet showInView:self.view];

Since you say this works on iPhone but not iPad, that means that the code path the iPad takes to get to this line is probably different than the code path the iPhone takes to get to this line. Which means that the view controller's view property is probably not set for the iPad.

My guess: you forgot to hook up the view outlet in Interface Builder for the iPad version of the xib this view controller is using.

Answer 2

do like this:

[self performSelectorOnMainThread:@selector(choosePhoto) withObject:nil waitUntilDone:NO]; -(void)choosePhoto {

UIActionSheet* actionSheet = [[UIActionSheet alloc] initWithTitle:@""
                                              delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil
                                     otherButtonTitles:@"Take Photo", @"Choose from gallery", nil];
actionSheet.actionSheetStyle = UIActionSheetStyleBlackOpaque;
actionSheet.tag = 1;
[actionSheet showInView:self.view];
[actionSheet release];

}

Worked for me