stringByAppendingPathComponent和stringByAppendingString 的區別

標籤：

 stringByAppendingPathComponent和stringByAppendingString 的區別 

stringByAppendingPathComponent

 

 

1. NSString * filePath3 = [documentsPath stringByAppendingPathComponent:@"Dictionary"];  

 

stringByAppendingString

 

 

1. NSString * filePath = [documentsPath stringByAppendingString:@"/hello.txt"];  

兩者比較  

1、後者需要加"/" ,前者不需要加

2、前者路徑列印出來：/Users/MyMacBook/Library/Developer/CoreSimulator/Devices/C1B4AFE9-2058-40A6-B868-101E166FF961/data/Containers/Data/Application/79CB8A9F-1000-4360-A9EA-801ADF1E0044/Documents/DataBase.sqlite
      後者路徑列印出來：/Users/MyMacBook/Library/Developer/CoreSimulator/Devices/C1B4AFE9-2058-40A6-B868-101E166FF961/data/Containers/Data/Application/79CB8A9F-1000-4360-A9EA-801ADF1E0044/Documents

 

stringByAppendingPathComponent

就是將前面的路徑格式和後面的普通的字串格式連結在一起，並且以路徑格式返回。

例如：擷取程式家目錄NSString *path =NSHomeDirectory();擷取後的path是"/root/User/";執行

path = [path stringByAppendingPathComponent:@"abc.txt"];後path為“/root/User/abc.txt”。

stringByAppendingPathComponent和stringByAppendingString 的區別