通過NSHomeDirectory獲得文件路徑

NSString *homeDirectory = NSHomeDirectory();
NSString *fileDirectory = [homeDirectory stringByAppendingPathComponent:@"temp/app_data.plist"];
 
//使用NSSearchPathForDirectoriesInDomains檢索指定路徑
NSArray *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
//常量NSDocumentDirectory表示正在查找Documents目錄的路徑(使用NSCachesDirectory表明要查找的時Caches文件夾)，常量NSUserDomainMask表明我們希望將搜索限制於我們應用程序的沙盒，最後一個參數決定了是否“展開”波浪線符號。
//在Mac系統中，‘~’表示主路經（Home），如果不展開，路徑看起來就是：‘~/Documents’,展開後即得到完整路徑。這個參數一直設置位真即可。
NSString *documentsDirectory = [paths objectAtIndex:0];z
NSString *fileDirectory = [documentsDirectory stringByAppendingPathComponent:@"file.txt"];
 
//使用Foundation中的NSTemporaryDirectory函數直接返回代表temp文件夾的全路徑的字符串對象
NSString *tempDirectory = NSTemporaryDirectory();
NSString *file = [tempDirectory stringByAppendingPathComponent:@"file.txt"];
 
 Example:
NSArray *path = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *docDir = [path objectAtIndex:0];
NSLog(@"filepath:%@",docDir);
NSString *str = @"hello.jpg";
NSString *filepath = [docDir stringByAppendingPathComponent:str];
//NSString *filepath = [docDir stringByAppendingPathComponent:[NSString stringWithUTF8String:"///mest.txt"]];
NSLog(@"filepath:%@",filepath);
   BOOL success = [[NSFileManager defaultManager]createFileAtPath: filepath contents:nil attributes:nil];
NSLog(@"result",success);
printf("Create File:%s %s.",[filepath UTF8String], success ? "Success" : "Error");
 
 
NSString* reValue= [NSString stringWithString:@"\"success\""];