the application crashed when calling this function, how ever in iPhone it works fine , but in iPad the application crashes and say
note: i'm using ActionSheetDatePicker library
Thread 1: EXC_BAD_ACCESS (cod = 1 , address = 0x9e...)
when i debug i found selectedDate is nil in iPad , but works fine in iPhone
#pragma mark - Implementation
- (void)dateWasSelected:(NSDate *)selectedDate element:(id)element {
// self.selectedDate = selectedDate;
//may have originated from textField or barButtonItem, use an IBOutlet instead of element
//DATE TEXT FIELD HERE
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"YYYY-MM-dd"];
//Optionally for time zone converstions
[formatter setTimeZone:[NSTimeZone timeZoneWithName:#"..."]];
NSString *stringFromDate = [formatter stringFromDate:selectedDate];
self.textFieldBirthDate.text = stringFromDate ;
birthDate = stringFromDate ;
//"YYYY-MM-DD" the birthdate format
}
The git hub code which you provided is working fine for me and I did debug the code.
When user Taps on done button (After selecting the date) below code will be executed.
- (void)notifyTarget:(id)target didSucceedWithAction:(SEL)action origin:(id)origin {
if ([target respondsToSelector:action])
objc_msgSend(target, action, self.selectedDate, origin);
else
NSAssert(NO, #"Invalid target/action ( %s / %s ) combination used for ActionSheetPicker", object_getClassName(target), (char *)action);
}
Now here make sure you are getting value for self.selectedDate , if you are not getting then please do check that you are getting a breakpoint to below code when you just select a date by scrolling.
- (void)eventForDatePicker:(id)sender {
if (!sender || ![sender isKindOfClass:[UIDatePicker class]])
return;
UIDatePicker *datePicker = (UIDatePicker *)sender;
self.selectedDate = datePicker.date;
}
These codes are present in file
ActionSheetDatePicker.m
If you are getting the breakpoint here then make sure you are saving the date .Once you do check this the problem will be resolved.
Regards,
Anil
Related
I have a simple method that determines the NSDate from a string like "NOV 2017". When I step through the method, actualDate has the correct value but nil is passed to the calling method.
The code below was working until recently, I'm on Xcode 9.0 targeting iOS 10 / 11.
Here is the calling method
NSDate *eventDate = [DateClass dateFromMonthYearString:#"NOV 2017"];
Method definition
+(NSDate*)dateFromMonthYearString:(NSString*)monthYearString
{
NSDateFormatter *formatter = [self cachedFormatter];
[formatter setDateFormat:MONTH_YEAR_DATE_FORMAT];
NSDate* actualDate = [formatter dateFromString:monthYearString];
return actualDate;
}
+(NSDateFormatter*) cachedFormatter
{
if (cachedDateFormatter == nil)
{
cachedDateFormatter = [[NSDateFormatter alloc] init];
cachedDateFormatter.locale = [NSLocale currentAppLocale];
}
return cachedDateFormatter;
}
The MONTH_YEAR_DATE_FORMAT is defined as ...
NSString * const MONTH_YEAR_DATE_FORMAT = #"MMM yyyy";
When I print the date object inside the method definition, Xcode prints the date correctly. When I try to 'po' outside the method definition, I just get something like this
(lldb) po eventDate
0x000000012eb048e0
Any thoughts ?
So when I print the values to the console via NSLog, it prints the correct value. Looks like its just the variable display and 'po' commands don't work correctly in X9.1 Weird ??
I am Setting Maximum date but not able to disable Remaining date
Example like - Date of Birth Selection.
Any one has idea about that.
thanks in Advance.
-(void) dateTextField:(id)sender
{
UIDatePicker *picker = (UIDatePicker*) dateOfBirthField.inputView;
// [picker setMaximumDate:[NSDate date]];
[picker setMinimumDate:[NSDate date]];
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
NSDate *eventDate = picker.date;
[dateFormat setDateFormat:#"yyyy/MM/dd"];
NSString *dateString = [dateFormat stringFromDate:eventDate];
dateOfBirthField.text = [NSString stringWithFormat:#"%#",dateString];
}
MDDatePickerDialog class uses MDCalendar to manage its minimum date. If you will look at the implementation of MDCalendar you will find following implementation in initialize method:
_maximumDate = [NSDateHelper mdDateWithYear:2037 month:12 day:31];
First try setting this date to a static value of your choice to see this is the required variable, then you can move this property declaration to header file of MDCalendar to make this maximumDate variable accessible outside the class. As a next step you can make a property in MDDatePickerDialog to set maximum date in the same way it sets minimum date.
A part from MDDatePicker.m file
- (void)setMinimumDate:(NSDate *)minimumDate {
self.calendar.minimumDate = minimumDate;
}
P.S. Remember to handle the date validations like date should be valid and maximum date should not be earlier than minimum date etc.
Hope that helps!
You just have to add date whatever you want to make maximum, here I have to make only a week date should be selected from the current date, So here is the code which I've written, where you show the date picker just add one line:
- _datePicker.maximumDate = [[NSDate date] dateByAddingTimeInterval:60*60*24*7]; ;
After that search this method into MDCalender.m file and replace with this code.
- (BOOL)shouldSelectDate:(NSDate *)date {
BOOL result;
if ([self.maximumDate timeIntervalSince1970] >= date.timeIntervalSince1970 ) {
result =
(date.timeIntervalSince1970 >= self.minimumDate.timeIntervalSince1970);
return result;
}
return result;
}
It worked for me. Thanks
I have a global variable in FirstViewController.h
extern NSString *dateString;
it records the date/time of when I press saveText button. There is another button called readText which pushes a UITableView. The first cell on this table will print the date saved.
However, this only works if I first press the saveText button. Otherwise, if I just press readText, it crashes. How can I get it so that if there is no current datetime saved, that it doesn't crash?
Here is where I wrote the timestamp for saveButton:
-(IBAction)saveText:(id)sender{
//code to save text, irrelevant to the question//
dateString = [NSDateFormatter localizedStringFromDate:[NSDate date]
dateStyle:NSDateFormatterShortStyle
timeStyle:NSDateFormatterShortStyle];
NSLog(#"%#",dateString);
}
and here is the code to load the tableviewcells with the timestamp
- (void)viewDidLoad
{
[super viewDidLoad];
NSString *str = #"Text- saved on: ";
str = [str stringByAppendingString: dateString];
self.list = [[NSArray alloc] initWithObjects: str, nil];
}
In my methods that use the variable dateString,
I used:
if([dateString length] == 0){
//perform standard procedure
}
else {
//what I want it to do
}
I'm attempting to initialize a custom class in my view controller to manage the data. Unfortunately the app crashes during the loading. I'm running Xcode 5.02 with the lldb debugger. The error I get is
Thread 1: EXC_BAD_ACCESS (code=2, address=0xbf7ffffc)
The error shows up on the first line (-(void)...) of the function
-(void)setDateOfErgPiece:(NSDate *)date
{
self.dateOfErgPiece = date;
if(self.dateOfErgPiece) {
// Date Formatter. So Date is displayed correctly
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateStyle:NSDateFormatterShortStyle];
[dateFormatter setTimeStyle:NSDateFormatterNoStyle];
// Set value
self.dateOfErgPieceString = [NSString stringWithFormat:#"%#", [dateFormatter stringFromDate:self.dateOfErgPiece]];
}
}
That method is called when the object is initialized by
-(id)initWithDate:(NSDate *)date
{
self = [super init];
if(self) {
[self setDateOfErgPiece:date];
}
return self;
}
The (NSDate *)date value in the above init method is received from this method
-(ErgNewDataEntryLogic *)ergPieceData {
if(!_ergPieceData) _ergPieceData = [[ErgNewDataEntryLogic alloc] initWithDate:[NSDate date]];
return _ergPieceData;
}
What is causing this error? If you need more information I'd be happy to provide it. Thank you so much!
I don't know if this is exactly the problem or not, but this is certainly a major problem:
-(void)setDateOfErgPiece:(NSDate *)date {
self.dateOfErgPiece = date;
// ...
self.dateOfErgPiece = date; is exactly equivalent to [self setDateOfErgPiece:date];.
So, as the first line of the method, the method is calling itself. Infinite recursion.
This should be changed to the following...
-(void)setDateOfErgPiece:(NSDate *)date {
_dateOfErgPiece = date;
// ...
The other references to self.dateOfErgPiece within the method seem to be okay, because they look to be calling the getter:
[self dateOfErgPiece];
Please help me with the dateformatter on IOS6, please see the code below
NSString stringDate = #"12/31/9999";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
[dateFormatter setDateFormat:#"MM/dd/yyyy"];
NSDate *dateCheck = [dateFormatter dateFromString:stringDate];
NSLog(#"Date = %#", dateCheck);
Output is
Date = 1999-12-31 08:00:00 +0000
This was the output when converting the string date to date 12/31/9999.
From the previous version of IOS6 the output is
Date = 9999-12-31 08:00:00 +0000 // Correct
I made a fix for this for my company's enterprise applications.
It should fix this issue for date formatters using a known format string (like the ones we use to parse dates from our sqlite database).
However, it will not fix:
NSDateFormatters that have isLenient set to true.
NSDateFormatters that use a style, instead of a format string, for parsing.
It does not seem to cause negative side effects on iOS 5 or 5.1. I have not tested anything earlier than that. However, I do mess with the internals of NSDateFormatter a bit, so this may not pass the App Store submission process. However, if you write programs under the Enterprise program (or just use ad hoc deployment), this shouldn't be a problem. Also, it will try to get out of the way if you have isLenient on, but there are no guarantees that you won't run into any issues.
I would like to stress that this is a Temporary Solution. I have not tested this in all possible situations, so you should implement this at your own risk.
I created the following category:
NSDateFormatter+HotFix.h
#import <Foundation/Foundation.h>
#interface NSDateFormatter (HotFix)
- (NSDate*)dateFromString:(NSString *)string;
#end
NSDateFormatter+HotFix.m
#import "NSDateFormatter+HotFix.h"
#import <objc/runtime.h>
#implementation NSDateFormatter (HotFix)
- (NSDate*)dateFromString:(NSString *)string
{
if (!string) return nil;
//HACK: Use the original implementation
void* baseFormatter = nil;
object_getInstanceVariable(self, "_formatter", &baseFormatter);
if (!baseFormatter) return nil;
//Use the underlying CFDateFormatter to parse the string
CFDateRef rawDate = CFDateFormatterCreateDateFromString(kCFAllocatorDefault, (CFDateFormatterRef)baseFormatter, (CFStringRef)string, NULL);
NSDate* source = (NSDate*)rawDate;
//We do not support lenient parsing of dates (or styles), period.
if (source && !self.isLenient && self.dateStyle == NSDateFormatterNoStyle && self.timeStyle == NSDateFormatterNoStyle)
{
//If it worked, then find out if the format string included a year (any cluster of 1 to 5 y characters)
NSString* format = [self dateFormat];
NSRegularExpression* regex = [NSRegularExpression regularExpressionWithPattern:#"y{1,5}" options:NSRegularExpressionCaseInsensitive error:NULL];
NSArray* matches = [regex matchesInString:format options:0 range:NSMakeRange(0, [format length])];
if ([matches count] > 0)
{
for (NSTextCheckingResult* result in matches)
{
//Check for the y grouping being contained within quotes. If so, ignore it
if (result.range.location > 0 && result.range.location + result.range.length < [format length] - 1)
{
if ([format characterAtIndex:result.range.location - 1] == '\'' &&
[format characterAtIndex:result.range.location + result.range.length + 1] == '\'') continue;
}
NSString* possibleYearString = [string substringWithRange:result.range];
NSInteger possibleYear = [possibleYearString integerValue];
if (possibleYear > 3500)
{
NSCalendar* calendar = [NSCalendar currentCalendar];
NSDateComponents* dateComp = [calendar components:NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit fromDate:source];
dateComp.year = possibleYear;
return [calendar dateFromComponents:dateComp];
}
}
}
}
return [source autorelease];
}
#end
It will replace the existing dateFromString method of NSDateFormatter. It works by trying to parse the string normally, then checking to see if the formatString has a set of year formatting characters inside it. If it does, it manually pulls the year out and checks if it is greater than 3500. Finally, if this is the case, it rewrites the output to have the correctly parsed year.
Simply include it in your project and it will take effect. You do not need to import the header into every file that uses a NSDateFormatter, just having the .m compiled in will modify the class. If you have any other categories that change dateFromString: then the effects of this class cannot be defined.
I hope this helps.