capture image - can’t seem to pass image as a parameter - NSString er…

…ror crash; setImage crash for navigation controller-x

share page -  done except that i cannot pass an image; maybe its because passing the image from a  dynamically created pageviewcontroller is difficult-x
solved this by copying the image in defaults and using it in shareviewcontroller -x
changes to text content UI -x

NSDate-Time-Ago/NSDate+NVTimeAgo.h

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+//
+//  NSDate+NVTimeAgo.h
+//  Adventures
+//
+//  Created by Nikil Viswanathan on 4/18/13.
+//  Copyright (c) 2013 Nikil Viswanathan. All rights reserved.
+//
+
+/*
+    This NSDate category adds the facebook style "time ago" date formatting.
+    This mimics Facebook mobile (the desktop version has slightly different date formatting).
+    This assumes all dates are in the past.
+ 
+ 
+    To use this in your iOS project:
+    --------------------------------
+    1. Drag both NSDate+NVTimeAgo.m aand NSDate+NVTimeAgo.h into your iOS project in XCode
+    2. In the files that you want to use this functionality in,itType: 
+        
+            #import "NSDate+NVTimeAgo.h" 
+ 
+        somewhere near the top of your file.
+ 
+    3. Use the date formatter on a date by calling:   
+ 
+        [date formattedAsTimeAgo];
+ 
+       where date is an (NSDate *) and represents a date IN THE PAST (relative to now).
+ 
+ 
+       If you have a mysql datetime string and you want to convert it to the time ago format, do:
+    
+       NSString *mysqlDatetime = <Get from the database>
+       NSString *timeAgoFormattedDate = [NSDate mysqlDatetimeFormattedAsTimeAgo:mysqlDatetime];
+ 
+ 
+ 
+ 
+    Made By Nikil Viswanathan
+    -------------------------
+    4/18/2013
+    You can contact me on: www.nikilster.com
+ 
+ 
+ 
+    Date Format
+    -----------
+     < 1 minute       	= "Just now"
+     < 1 hour         	= "x minutes ago"
+     Today            	= "x hours ago"
+     Yesterday        	= "Yesterday at 1:28pm"
+     < Last 7 days    	= "Friday at 1:48am"
+     < Last 30 days   	= "March 30 at 1:14 pm"
+     < 1 year         	= "September 15"
+     Anything else    	= "September 9, 2011"
+ 
+ 
+*/
+
+#import <Foundation/Foundation.h>
+
+@interface NSDate (NVFacebookTimeAgo)
+
+/*
+    Mysql Datetime Formatted As Time Ago
+    Takes in a mysql datetime string and returns the Time Ago date format
+ */
++ (NSString*)mysqlDatetimeFormattedAsTimeAgo:(NSString *)mysqlDatetime;
+
+
+/*
+    Formatted As Time Ago
+    Returns the time formatted as Time Ago (in the style of Facebook's mobile date formatting)
+ */
+- (NSString *)formattedAsTimeAgo;
+
+@end

NSDate-Time-Ago/NSDate+NVTimeAgo.m

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+//
+//  NSDate+NVTimeAgo.m
+//  Adventures
+//
+//  Created by Nikil Viswanathan on 4/18/13.
+//  Copyright (c) 2013 Nikil Viswanathan. All rights reserved.
+//
+
+#import "NSDate+NVTimeAgo.h"
+
+@implementation NSDate (NVFacebookTimeAgo)
+
+
+#define SECOND  1
+#define MINUTE  (SECOND * 60)
+#define HOUR    (MINUTE * 60)
+#define DAY     (HOUR   * 24)
+#define WEEK    (DAY    * 7)
+#define MONTH   (DAY    * 31)
+#define YEAR    (DAY    * 365.24)
+
+/*
+    Mysql Datetime Formatted As Time Ago
+    Takes in a mysql datetime string and returns the Time Ago date format
+ */
++ (NSString *)mysqlDatetimeFormattedAsTimeAgo:(NSString *)mysqlDatetime
+{
+    //http://stackoverflow.com/questions/10026714/ios-converting-a-date-received-from-a-mysql-server-into-users-local-time
+    //If this is not in UTC, we don't have any knowledge about
+    //which tz it is. MUST BE IN UTC.
+    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
+    [formatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
+
+    NSDate *date = [formatter dateFromString:mysqlDatetime];
+
+    return [date formattedAsTimeAgo];
+
+}
+
+
+/*
+    Formatted As Time Ago
+    Returns the date formatted as Time Ago (in the style of the mobile time ago date formatting for Facebook)
+ */
+- (NSString *)formattedAsTimeAgo
+{    
+    //Now
+    NSDate *now = [NSDate date];
+    NSTimeInterval secondsSince = -(int)[self timeIntervalSinceDate:now];
+
+    //Should never hit this but handle the future case
+    if(secondsSince < 0)
+        return @"In The Future";
+
+
+    // < 1 minute = "Just now"
+    if(secondsSince < MINUTE)
+        return @"Just now";
+
+
+    // < 1 hour = "x minutes ago"
+    if(secondsSince < HOUR)
+        return [self formatMinutesAgo:secondsSince];
+
+
+    // Today = "x hours ago"
+    if([self isSameDayAs:now])
+        return [self formatAsToday:secondsSince];
+
+
+    // Yesterday = "Yesterday at 1:28 PM"
+    if([self isYesterday:now])
+        return [self formatAsYesterday];
+
+
+    // < Last 7 days = "Friday at 1:48 AM"
+    if([self isLastWeek:secondsSince])
+        return [self formatAsLastWeek];
+
+
+    // < Last 30 days = "March 30 at 1:14 PM"
+    if([self isLastMonth:secondsSince])
+        return [self formatAsLastMonth];
+
+    // < 1 year = "September 15"
+    if([self isLastYear:secondsSince])
+        return [self formatAsLastYear];
+
+    // Anything else = "September 9, 2011"
+    return [self formatAsOther];
+
+}
+
+
+
+/*
+ ========================== Date Comparison Methods ==========================
+ */
+
+/*
+    Is Same Day As
+    Checks to see if the dates are the same calendar day
+ */
+- (BOOL)isSameDayAs:(NSDate *)comparisonDate
+{
+    //Check by matching the date strings
+    NSDateFormatter *dateComparisonFormatter = [[NSDateFormatter alloc] init];
+    [dateComparisonFormatter setDateFormat:@"yyyy-MM-dd"];
+
+    //Return true if they are the same
+    return [[dateComparisonFormatter stringFromDate:self] isEqualToString:[dateComparisonFormatter stringFromDate:comparisonDate]];
+}
+
+
+
+
+/*
+ If the current date is yesterday relative to now
+ Pasing in now to be more accurate (time shift during execution) in the calculations
+ */
+- (BOOL)isYesterday:(NSDate *)now
+{
+    return [self isSameDayAs:[now dateBySubtractingDays:1]];
+}
+
+
+//From https://github.com/erica/NSDate-Extensions/blob/master/NSDate-Utilities.m
+- (NSDate *) dateBySubtractingDays: (NSInteger) numDays
+{
+	NSTimeInterval aTimeInterval = [self timeIntervalSinceReferenceDate] + DAY * -numDays;
+	NSDate *newDate = [NSDate dateWithTimeIntervalSinceReferenceDate:aTimeInterval];
+	return newDate;
+}
+
+
+/*
+    Is Last Week
+    We want to know if the current date object is the first occurance of
+    that day of the week (ie like the first friday before today 
+    - where we would colloquially say "last Friday")
+    ( within 6 of the last days)
+ 
+    TODO: make this more precise (1 week ago, if it is 7 days ago check the exact date)
+ */
+- (BOOL)isLastWeek:(NSTimeInterval)secondsSince
+{
+    return secondsSince < WEEK;
+}
+
+
+/*
+    Is Last Month
+    Previous 31 days?
+    TODO: Validate on fb
+    TODO: Make last day precise
+ */
+- (BOOL)isLastMonth:(NSTimeInterval)secondsSince
+{
+    return secondsSince < MONTH;
+}
+
+
+/*
+    Is Last Year
+    TODO: Make last day precise
+ */
+
+- (BOOL)isLastYear:(NSTimeInterval)secondsSince
+{
+    return secondsSince < YEAR;
+}
+
+/*
+ =============================================================================
+ */
+
+
+
+
+
+/*
+   ========================== Formatting Methods ==========================
+ */
+
+
+// < 1 hour = "x minutes ago"
+- (NSString *)formatMinutesAgo:(NSTimeInterval)secondsSince
+{
+    //Convert to minutes
+    int minutesSince = (int)secondsSince / MINUTE;
+
+    //Handle Plural
+    if(minutesSince == 1)
+        return @"1 minute ago";
+    else
+        return [NSString stringWithFormat:@"%d minutes ago", minutesSince];
+}
+
+
+// Today = "x hours ago"
+- (NSString *)formatAsToday:(NSTimeInterval)secondsSince
+{
+    //Convert to hours
+    int hoursSince = (int)secondsSince / HOUR;
+
+    //Handle Plural
+    if(hoursSince == 1)
+        return @"1 hour ago";
+    else
+        return [NSString stringWithFormat:@"%d hours ago", hoursSince];
+}
+
+
+// Yesterday = "Yesterday at 1:28 PM"
+- (NSString *)formatAsYesterday
+{
+    //Create date formatter
+    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
+
+    //Format
+    [dateFormatter setDateFormat:@"h:mm a"];
+    return [NSString stringWithFormat:@"Yesterday at %@", [dateFormatter stringFromDate:self]];
+}
+
+
+// < Last 7 days = "Friday at 1:48 AM"
+- (NSString *)formatAsLastWeek
+{
+    //Create date formatter
+    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
+
+    //Format
+    [dateFormatter setDateFormat:@"EEEE 'at' h:mm a"];
+    return [dateFormatter stringFromDate:self];
+}
+
+
+// < Last 30 days = "March 30 at 1:14 PM"
+- (NSString *)formatAsLastMonth
+{
+    //Create date formatter
+    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
+
+    //Format
+    [dateFormatter setDateFormat:@"MMMM d 'at' h:mm a"];
+    return [dateFormatter stringFromDate:self];
+}
+
+
+// < 1 year = "September 15"
+- (NSString *)formatAsLastYear
+{
+    //Create date formatter
+    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
+
+    //Format
+    [dateFormatter setDateFormat:@"MMMM d"];
+    return [dateFormatter stringFromDate:self];
+}
+
+
+// Anything else = "September 9, 2011"
+- (NSString *)formatAsOther
+{
+    //Create date formatter
+    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
+
+    //Format
+    [dateFormatter setDateFormat:@"LLLL d, yyyy"];
+    return [dateFormatter stringFromDate:self];
+}
+
+
+/*
+ =======================================================================
+ */
+
+
+
+
+
+/*
+ ========================== Test Method ==========================
+ */
+
+/*
+    Test the format
+    TODO: Implement unit tests
+ */
++ (void)runTests
+{
+    NSLog(@"1 Second in the future: %@\n", [[NSDate dateWithTimeIntervalSinceNow:1] formattedAsTimeAgo]);
+    NSLog(@"Now: %@\n", [[NSDate dateWithTimeIntervalSinceNow:0] formattedAsTimeAgo]);
+    NSLog(@"1 Second: %@\n", [[NSDate dateWithTimeIntervalSinceNow:-1] formattedAsTimeAgo]);
+    NSLog(@"10 Seconds: %@\n", [[NSDate dateWithTimeIntervalSinceNow:-10] formattedAsTimeAgo]);
+    NSLog(@"1 Minute: %@\n", [[NSDate dateWithTimeIntervalSinceNow:-60] formattedAsTimeAgo]);
+    NSLog(@"2 Minutes: %@\n", [[NSDate dateWithTimeIntervalSinceNow:-120] formattedAsTimeAgo]);
+    NSLog(@"1 Hour: %@\n", [[NSDate dateWithTimeIntervalSinceNow:-HOUR] formattedAsTimeAgo]);
+    NSLog(@"2 Hours: %@\n", [[NSDate dateWithTimeIntervalSinceNow:-2*HOUR] formattedAsTimeAgo]);
+    NSLog(@"1 Day: %@\n", [[NSDate dateWithTimeIntervalSinceNow:-1*DAY] formattedAsTimeAgo]);
+    NSLog(@"1 Day + 3 seconds: %@\n", [[NSDate dateWithTimeIntervalSinceNow:-1*DAY-3] formattedAsTimeAgo]);
+    NSLog(@"2 Days: %@\n", [[NSDate dateWithTimeIntervalSinceNow:-2*DAY] formattedAsTimeAgo]);
+    NSLog(@"3 Days: %@\n", [[NSDate dateWithTimeIntervalSinceNow:-3*DAY] formattedAsTimeAgo]);
+    NSLog(@"5 Days: %@\n", [[NSDate dateWithTimeIntervalSinceNow:-5*DAY] formattedAsTimeAgo]);
+    NSLog(@"6 Days: %@\n", [[NSDate dateWithTimeIntervalSinceNow:-6*DAY] formattedAsTimeAgo]);
+    NSLog(@"7 Days - 1 second: %@\n", [[NSDate dateWithTimeIntervalSinceNow:-7*DAY+1] formattedAsTimeAgo]);
+    NSLog(@"10 Days: %@\n", [[NSDate dateWithTimeIntervalSinceNow:-10*DAY] formattedAsTimeAgo]);
+    NSLog(@"1 Month + 1 second: %@\n", [[NSDate dateWithTimeIntervalSinceNow:-MONTH-1] formattedAsTimeAgo]);
+    NSLog(@"1 Year - 1 second: %@\n", [[NSDate dateWithTimeIntervalSinceNow:-YEAR+1] formattedAsTimeAgo]);
+    NSLog(@"1 Year + 1 second: %@\n", [[NSDate dateWithTimeIntervalSinceNow:-YEAR+1] formattedAsTimeAgo]);
+}
+/*
+ =======================================================================
+ */
+
+
+
+@end