objective-c如何获得文件路径

方法：通过NSHomeDirectory获得文件路径
代码如下：
NSString *homeDirectory = NSHomeDirectory();
NSString *fileDirectory = [homeDirectory stringByAppendingPathComponent:@"temp/app_data.plist"];

1.//使用NSSearchPathForDirectoriesInDomains检索指定路径
NSArray *path = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];z
NSString *fileDirectory = [documentsDirectory stringByAppendingPathComponent:@"file.txt"];
2.//使用Foundation中的NSTemporaryDirectory函数直接返回代表temp文件夹的全路径的字符串对象
NSString *tempDirectory = NSTemporaryDirectory();
NSString *file = [tempDirectory stringByAppendingPathComponent:@"file.txt"];
实现例子如下:
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\\""];