nsmutablearray

问题 I have a property declared like this: @property (nonatomic, retain) NSMutableArray *pricingLevels; And I assign it like this: self.pricingLevels = [[[NSMutableArray alloc] init]; in my dealloc I have this: self.pricinglevels=nil; When I analyze my code with xCode it says I have a memory leak here: self.pricingLevels = [[[NSMutableArray alloc] init]; Should I be using an autolrelease on this because the self.pricinglevels holds a reference to the array also? 回答1: self.pricingLevels is a

问题 I have a property declared like this: @property (nonatomic, retain) NSMutableArray *pricingLevels; And I assign it like this: self.pricingLevels = [[[NSMutableArray alloc] init]; in my dealloc I have this: self.pricinglevels=nil; When I analyze my code with xCode it says I have a memory leak here: self.pricingLevels = [[[NSMutableArray alloc] init]; Should I be using an autolrelease on this because the self.pricinglevels holds a reference to the array also? 回答1: self.pricingLevels is a

问题 Code: LotteryEntry.h #import <Foundation/Foundation.h> @interface LotteryEntry : NSObject { NSCalendarDate *entryDate; int firstNumber; int secondNumber; } - (void) prepareRandomNumbers; - (void) setEntryDate:(NSCalendarDate *)date; - (NSCalendarDate*)entryDate; - (int) firstNumber; - (int) secondNumber; @end LotteryEntry.m #import "LotteryEntry.h" @implementation LotteryEntry - (void) prepareRandomNumbers { firstNumber = random() % 100 + 1; secondNumber = random() % 100 + 1; } - (void)

问题 i am new in ios developer.i want to store json and stepper value.i have already store json and stepper value is nsmutablearray but problem is when i back to the screen that time this array new value is overwrite to old value.but i want to store old nad new value both.i upload my json response. { Data: [ { m_id: "1", m_name: "Shirts(Man)", m_drycleaning_price: "12", m_washiron_price: "25", m_wash_price: "10", m_iron_price: "9", m_imagename: "a" }, { m_id: "2", m_name: "Pants(Man)", m

问题 I create an array based on a dictionaries key's: factsBuiltArray = [NSMutableArray arrayWithCapacity: 6]; if ([statusDict count] == 10) { for (NSString *key in [statusDict allKeys]) { if ([key isEqualToString: @"currenciesAndConversions"]) { [factsBuiltArray insertObject:key atIndex: 0]; } else if ([key isEqualToString: @"languageAndTranslations"]) { [factsBuiltArray insertObject:key atIndex: 1]; } else if ([key isEqualToString: @"plugSize"]) { [factsBuiltArray insertObject:key atIndex: 2]; }

问题 In my iphone project (ARC enabled) i have a nsmuatble array which contains some 5 managed objects (which are retrieved from core data ) and in some scenario i need to remove all the objects from that nsmutablearray i have used following methods to remove objects but its crashing in both the cases with the crash log -[__NSArrayI removeObject:]: unrecognized selector sent to instance 0xa391640 if (surveys && [surveys count]>0) { [surveys removeAllObjects]; surveys = [[NSMutableArray alloc]init]

问题 In my iOS app, I am using the forecast.io API to get a weather forecast for 3 specific days. Once I get the array from all 3, I want to create an NSMutableArray and add all of those objects to it. The problem I am getting is that it is trying to create the NSMutableArray before the forecast data is retrieved. Here is what I have so far: typedef void(^myCompletion)(BOOL); -(void)viewWillAppear:(BOOL)animated { [super viewWillAppear:YES]; [self myMethod:^(BOOL finished) { if(finished){

问题 Ok so I populate the array like this: NSMutableArray *participants; for(int i = 0; i < sizeofpm; i++){ NSDictionary *pmpart_dict = [pm_participants objectAtIndex:i]; NSString *pmpart_email = [pmpart_dict objectForKey:@"email"]; NSString *pmpart_email_extra = [@"pm" stringByAppendingString:pmpart_email]; [participants setValue:pmpart_email forKey:pmpart_email_extra]; NSLog(@"%@", participants); } sizeofpm is 1. that is using count. to get the number of values in the array. How can i store

问题 I can't figure out what is causing this. Basically, a few different 'tasks' are colliding with each other in my app. When i press a button, it runs this code just fine: PalAppDelegate *dataCenter = (PalAppDelegate *)[[UIApplication sharedApplication] delegate]; [dataCenter.colourPalettesContainer addObject:[NSNumber numberWithInt:5]]; It can do this as many times as i like. But when i perform another task (and theres a few which cause this to happen), which involves this code for example:

问题 I want to add an NSMutableArray of NSStrings to one of my Entities in my core data model. The problem is that this isn't a supported type in Core Data. I tried making a tranformable attribute, but the problem is that I see no way of turning a NSMutableArray to NSData, and then going from NSData, back to an NSMutableArray. Does anyone have an idea as to how this issue can be solved? (I know I can archive the array, but I don't want to do that, I want it to be present in my model). 回答1: You