我需要一些帮助,我需要知道如何创建从数组中检索的字符串数组.我正在使用powerplot图表,它只接受浮点数或字符串数组.
我需要动态地创建这样的东西.
NSString * sourceData [7] = {@“2”,@“1”,@“4”,@“8”,@“14”,@“15”,@“10”};
下面是我的代码,以找出字符串中的数字.
NSInteger drunked = [appDelegate.drinksOnDayArray count];
NSMutableArray * dayArray = [[NSMutableArray alloc] init];
NSMutableArray * sdArray = [[NSMutableArray alloc] init];
//float *sdArray[7];
for (int i=0; i<drunked; i++) {
DayOfDrinks *drinksOnDay = [appDelegate.drinksOnDayArray objectAtIndex:i];
NSString * dayString= [NSDate stringForDisplayFromDateForChart:drinksOnDay.dateConsumed];
[dayArray addObject:dayString];
NSLog(@"%@",[dayArray objectAtIndex:i]);
drinksOnDay.isDetailViewHydrated = NO;
[drinksOnDay hydrateDetailViewData];
NSString * sdString= [NSString stringWithFormat:@"%@",drinksOnDay.standardDrinks];
[sdArray addObject:sdString];
NSString *tempstring;
NSLog(@"%@",[sdArray objectAtIndex:i]);
}
谢谢您的帮助 ：)
解决方法
Objectice-C中的数组并不难以使用：
NSMutableArray *myArray = [NSMutableArray array];
[myArray addObject:@"first string"]; // same with float values
[myArray addObject:@"second string"];
[myArray addObject:@"third string"];
int i;
int count;
for (i = 0,count = [myArray count]; i < count; i = i + 1)
{
NSString *element = [myArray objectAtIndex:i];
NSLog(@"The element at index %d in the array is: %@",i,element); // just replace the %@ by %d
}
您可以使用NSArray或NSMutableArray – 根据您的需要,它们提供不同的功能.
以下教程涵盖了您正在关注的内容：