如何排序键的NSArray？

Question

我有钥匙的NSArray从NSDictionary这样的：

NSArray *array = [[NSArray alloc] initWithArray:[myDict allKeys]]; 
[array sortedArrayUsingSelector:@selector(compare:)]; 

为什么不阵列得到命令？

Answer 1

我认为它有用，你

NSDictionary *stateZip; 
NSArray *states; 
NSDictionary *dictionary = [[NSDictionary alloc] initWithContentsOfFile:plistPath];   
self.stateZip=dictionary; 
[dictionary release]; 


NSArray *component = [self.stateZip allKeys]; 
NSArray *sorted =[component sortedArrayUsingSelector:@selector(compare:)]; 
self.states=sorted; 

个

ragards， CNSivakUmar

Answer 2

Heyy试试这个....

NSSortDescriptor *lastNameSorter = [[NSSortDescriptor alloc] initWithKey:@"lastName" ascending:YES]; 

这样做，我把这个在data.h/M文件作为NSMutableArray里与数据或viewcontroller.h/M档为我创建需要在表格中显示数据？

Answer 3

这可能会有所帮助：

NSSortDescriptor *sortDesc = [[NSSortDescriptor alloc] initWithKey:@”self” ascending:YES]; 
[array sortUsingDescriptors:[NSArray arrayWithObject:sortDesc]]; 
[sortDesc release]; 

欲了解更多信息，看看

1. NSSortDescriptor
2. 排序，NSArrays