-(NSURL*)applicationDocumentsDirectory{    return [[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject];}-(NSString*)applicationDocumentsDirectoryPath{    return [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];}

区别如下：

NSLog(@"%@",storeURL);NSLog(@"%@",storePath);NSLog(@"%@",[storeURL absoluteString]);

结果分别为

file://localhost/Users/apple/Library/Application%20Support/iPhone%20Simulator/6.0/Applications/A2187B83-2937-46AC-9829-D87B4D292E7C/Documents/

/Users/apple/Library/Application Support/iPhone Simulator/6.0/Applications/A2187B83-2937-46AC-9829-D87B4D292E7C/Documents/

file://localhost/Users/apple/Library/Application%20Support/iPhone%20Simulator/6.0/Applications/A2187B83-2937-46AC-9829-D87B4D292E7C/Documents/

因此若需要使用方法

NSFileManager* fileManager = [NSFileManager defaultManager];[fileManager fileExistsAtPath:storePath];

必须使用applicationDocumentsDirectoryPath，而不能使用 [URL absoluteString];