循环一个NSArray

Question

里面我有此数组：

NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; 
NSString *firstname = [defaults objectForKey:kFirstName]; 
NSString *middlename = [defaults objectForKey:kMiddleName]; 
NSString *lastname = [defaults objectForKey:kLastName]; 
NSString *gender = [defaults objectForKey:kGender]; 
NSString *bloodtype = [defaults objectForKey:kBloodType]; 
NSString *civilstatus = [defaults objectForKey:kCivilStatus]; 
NSString *nationality = [defaults objectForKey:kNationality]; 

NSArray *nameArray = [NSArray arrayWithObjects:firstname, middlename, lastname, gender, bloodtype, civilstatus, nationality, nil]; 

我想创建数组检查NSString对象在一个循环中为空或有一个值。

目前，我有这样的混乱，如果不使用数组声明：

if (([firstname length] || [middlename length] || [lastname length] || [gender length] || [bloodtype length] || [civilstatus length] || [nationality length]) == 0) 
{ 
    NSLog(@"test1"); 
} 

我怎样才能做到这一点？提前致谢！

Answer 1

您可以在阵列上使用enumerateObjectsUsingBlock，它是这样的任务非常方便：https://developer.apple.com/library/mac/documentation/Cocoa/Reference/Foundation/Classes/NSArray_Class/NSArray.html#//apple_ref/occ/instm/NSArray/enumerateObjectsUsingBlock：

或者简单地使用快速列举：

for (NSString *item in nameArray) 
    if ([item length]) 
     NSLog(@"test1");