xcode 如何从 iPhone 上的 NSMutableArray 检索整数值？
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时间：2020-09-14 18:35:37 来源:igfitidea点击:
how can I retrieve an integer value from an NSMutableArray on the iPhone?
提问by Rahul Vyas
How would I get an integer value out of an NSMutableArray?
如何从 NSMutableArray 中获取整数值？
回答by e.James
回答by YannSteph
You have this extends if you want
如果你愿意，你有这个扩展
Create file extends.hadd this code and #import "extends.h"in your project :
创建文件extends.h在您的项目中添加此代码和#import "extends.h"：
/*______________________________ Extends NSMutableArray ______________________________*/
/**
* Extend NSMutableArray
* By DaRkD0G
*/
@interface NSMutableArray (NSArrayAdd)
/**
* Get element at index
*
* @param index
*/
- (NSObject *) getAt:(int) index;
@end
/**
* Extend NSMutableArray Method
* By DaRkD0G
*/
@implementation NSMutableArray (NSArrayAdd)
/**
* Get element at index
*
* @param index
*/
- (NSObject *) getAt:(int) index {
NSInteger anIndex = index;
NSObject *object = [self objectAtIndex:anIndex];
if (object == [NSNull null]) {
return nil;
} else {
NSLog(@"OK found ");
return object;
}
}
@end
/*______________________________ Extends NSArray ______________________________*/
/**
* Extend NSArray
* By DaRkD0G
*/
@interface NSArray (NSArrayAdd)
/**
* Get element at index
*
* @param index
*/
- (NSObject *) getAt:(int) index;
@end
/**
* Extend NSArray Method
* By DaRkD0G
*/
@implementation NSArray (NSArrayAdd)
/**
* Get element at index
*
* @param index
*/
- (NSObject *) getAt:(int) index {
NSInteger anIndex = index;
NSObject *object = [self objectAtIndex:anIndex];
if (object == [NSNull null]) {
return nil;
} else {
NSLog(@"OK found ");
return object;
}
}
@end
USE :
用 ：
NSObject object = [self.arrayItem getAt:0];
NSObject object2 = [self.arrayItem getAt:50];
