nsmutablearray

问题 In my view, i have 12 buttons,and a array contains 6 names , i want to print the array names in UIButton title. Here's my code: texts = [[NSMutableArray alloc] initWithObjects:@"1",@"2",@"3",@"4",@"5",@"6",nil]; UIButton *button; NSString *name; NSUInteger count = [texts count]; int i=0; for(UIView *view in self.view.subviews) { if([view isKindOfClass:[UIButton class]]) { button= (UIButton *)view; if(button.tag >= 1||button.tag <= 20) { int value = rand() % ([texts count] -1) ; int myTag= i+1

问题 In my view, i have 12 buttons,and a array contains 6 names , i want to print the array names in UIButton title. Here's my code: texts = [[NSMutableArray alloc] initWithObjects:@"1",@"2",@"3",@"4",@"5",@"6",nil]; UIButton *button; NSString *name; NSUInteger count = [texts count]; int i=0; for(UIView *view in self.view.subviews) { if([view isKindOfClass:[UIButton class]]) { button= (UIButton *)view; if(button.tag >= 1||button.tag <= 20) { int value = rand() % ([texts count] -1) ; int myTag= i+1

问题 i want to show my email headers in a UITableView when inbox button clicked, my email headers is stored in an NSMutable Array, -(IBAction)buttonInbox:(id)sender{ NSLog(@"Inbox Button Clicked %@",buttonInbox); [self select:@"INBOX"]; NSArray *lines = [self sendCommand:@"fetch 1:* (body[header.fields (from subject date)])"]; //NSMutableArray *emaiArray= [[NSMutableArray alloc] init]; NSMutableString *totalEmail= [NSMutableString stringWithString:@""]; int counter = 0; int i =0; NSRange tmp; for

问题 I'm working on a homework app that uses custom Assignment objects for each assignment. I am trying to store an NSMutableArray (casted to an NSArray via initWithArray:) in standardUserDefaults but I'm having trouble with saving and reloading the array. I have a table view from which you can choose to add a new assignment (which loads NewAssignmentViewController). When you save the assignment, it is pushed back to an array in AssigmentsViewController. And then you call it every time you load

问题 I have a NSMutableArray that is loaded with values. Later in the application, I need to change the values of one of the elements in the array. How do I accomplish this? thanks tony 回答1: Take a look at the class reference instance methods: http://developer.apple.com/library/ios/#documentation/cocoa/reference/foundation/Classes/NSMutableArray_Class/Reference/Reference.html You can use: replaceObjectAtIndex:withObject: given you know the index of the object. replaceObjectsAtIndexes:withObjects:

问题 noobie question.. What is the best way to check if the index of an NSArray or NSMutableArray exists. I search everywhere to no avail!! This is what I have tried: if (sections = [arr objectAtIndex:4]) { /*.....*/ } or sections = [arr objectAtIndex:4] if (sections == nil) { /*.....*/ } but both throws an "out of bounds" error not allowing me to continue (do not reply with a try catch because thats not a solution for me) Thanks in advance 回答1: if (array.count > 4) { sections = [array

问题 noobie question.. What is the best way to check if the index of an NSArray or NSMutableArray exists. I search everywhere to no avail!! This is what I have tried: if (sections = [arr objectAtIndex:4]) { /*.....*/ } or sections = [arr objectAtIndex:4] if (sections == nil) { /*.....*/ } but both throws an "out of bounds" error not allowing me to continue (do not reply with a try catch because thats not a solution for me) Thanks in advance 回答1: if (array.count > 4) { sections = [array

问题 I'm trying to generate an array of 30 days from the current date and put them into an array formatted correctly. I currently have a working generater to get 30 days from the current date and put it into an array but I don't know how to use NSDate formatter for an array. I know how to use the formatter for a single item but how can I format all the dates in my array? The format that I would like is (Month Day). Here's my code: NSMutableArray* dates = [[NSMutableArray alloc] init]; int

问题 I got annoying question... What if I have many image , and I want load it in to a table view And show the file name as cell's text , and the preview image is also show in the cell. When I select the cell , it will push to next view , show the big size image. That's it . I don't know how to load many folder to an array? /*********** EDIT ***********/ This is the folder I set many images inside You can see that's only one root folder ... And this is my code to load the image inside

问题 I am using NSMutableArray. I want to fetch the values by date like we do in SQL group by "log_date" . logMuArray ( { "log_currenttime" = "4:30pm"; "log_date" = "11.12.2011"; "log_duration" = "1:30"; }, { "log_currenttime" = "4:33pm"; "log_date" = "11.12.2011"; "log_duration" = "2:21"; }, { "log_currenttime" = "4:40pm"; "log_date" = "11.12.2011"; "log_duration" = "5:30"; }, { "log_currenttime" = "7:30pm"; "log_date" = "12.12.2011"; "log_duration" = "1:30"; }, { "log_currenttime" = "7:33pm";