iphone - 如何检查 NSMutableArray 是否包含包含特定文本的对象？

Question

如何检查 NSMutableArray 是否包含包含特定文本的对象？然后，如果找到一段文本，它将用另一段文本替换它。

谢谢

Answer 1

像这样的东西应该可以工作:

@interface NSMutableArray (JRAdditions) 

- (void) replaceStringObjectsContainingString:(NSString *) str withString:(NSString *) newString;

@end

@implementation NSMutableArray (JRAdditions)

- (void) replaceStringObjectsContainingString:(NSString *) str withString:(NSString *) newString {

   for(unsigned i = 0; i < [self count]; ++i) {
      id obj = [self objectAtIndex:i];

      if(![obj isKindOfClass:[NSString class]]) continue;

      NSString *replaced = [str stringByReplacingOccurrencesOfString:str withString:newString];
      [self replaceObjectAtIndex:i withObject:replaced];

   }
}

@end

然后您可以这样使用它:

NSMutableArray *array = ...;

[array replaceStringObjectsContainingString:@"blah" withString:@"foo"];