IOS leverages Fzeasyfile local save and regular save

1. Regular saving (more trouble)

Nsfilemanager *filemanager = [NsfilemanagerDefaultmanager];Gets the document path, with the parentheses property being exclusive to the current applicationNsarray *directorypaths =Nssearchpathfordirectoriesindomains (NSDocumentDirectory, Nsuserdomainmask,YES);NSString *documentdirectory = [directorypathsObjectatindex:0];Find folder, create a folder if it doesn't existNSString *dir = [documentdirectorystringByAppendingPathComponent: @SAVEDIR];NSLog (@ "Cache dir%@", dir);if (![ FileManagerFileexistsatpath:dir]) {if (![ FileManagerCreatedirectoryatpath:dirWithintermediatedirectories:YESAttributesNilErrorNil]) {NSLog (@ "Create dir: (%@) Error", dir); return;} } //define the full name of the record file and the path of the string FilePath nsstring *filepath = [dir stringbyappendingpathcomponent:[[nsstring  Alloc]initwithformat:@ "/%@", filename]]; //Find file, if not present, create a file nsdata *data = [lhtml datausingencoding:nsutf8stringencoding]; if (![ FileManager Fileexistsatpath:filepath]) {[FileManager createfileatpath:filepath contents:data  Attributes:nil]; } 


2, Fzeasyfile Save
Imported Files:

//

FZEasyFile.h

Fzeasyfile

//

Created by Zhou June on 14-4-29.

Copyright (c) 2014 Shannonchou. All rights reserved.

//

#import <Foundation/Foundation.h>

@interface Fzeasyfile:nsobject

/**

Singleton pattern.

@return the shared instance.

*/

+ (Fzeasyfile *) sharedinstance;

/**

Convert the short file name to full file name. e.g. "Mycache/user/icon.png", "/users/zhoujun/library/application support/iphone simulator/7.1/applications/" Abce2119-e864-4492-a3a9-a238ada74be5/documents/mycache/user/icon.png ".

@return full file name.

*/

-(NSString *) Fullfilename: (NSString *) ShortFileName;

/**

Test if the file exists.

@param fileName file path and file name, e.g. "mycache/user/icon.png".

@return YES if exists, NO otherwise.

*/

-(BOOL) isfileexists: (NSString *) fileName;

/**

Create a file

@param filename FileName File path and file name, e.g. "mycache/user/icon.png".

@param shouldoverwrite yes:if The file exists then overwirte it and no:if the file exists then does nothing

*/

-(void) CreateFile: (NSString *) fileName Overwrite: (BOOL) Shouldoverwrite;

@end

//

FZEASYFILE.M

Fzeasyfile

//

Created by Zhou June on 14-4-29.

Copyright (c) 2014 Shannonchou. All rights reserved.

//

#import "FZEasyFile.h"

@implementation Fzeasyfile

Static Fzeasyfile *instance;

+ (Fzeasyfile *) sharedinstance {

if (!instance) {

@synchronized (Fzeasyfile.class) {

if (!instance) {

instance = [[Fzeasyfile alloc] init];

}

}

}

return instance;

}

-(NSString *) Fullfilename: (NSString *) ShortFileName {

Search the "document" path

Nsarray *directorypaths = Nssearchpathfordirectoriesindomains (NSDocumentDirectory, NSUserDomainMask, YES);

NSString *documentdirectory = [Directorypaths objectatindex:0];

NSString *file = [Documentdirectory stringbyappendingpathcomponent:shortfilename];

return file;

}

-(BOOL) isfileexists: (NSString *) FileName {

Nsfilemanager *filemanager = [Nsfilemanager Defaultmanager];

NSString *file = [self fullfilename:filename];

return [FileManager Fileexistsatpath:file];

}

-(void) CreateFile: (NSString *) fileName Overwrite: (BOOL) Shouldoverwrite {

Nsfilemanager *filemanager = [Nsfilemanager Defaultmanager];

Create file directory, include multilayer directory

Nsrange Lasttag = [FileName rangeofstring:@ "/" options:nsbackwardssearch];

if (lasttag.location! = Nsnotfound && lasttag.location! = 0) {

NSString *shortdir = [FileName substringToIndex:lastTag.location];

NSString *fulldir = [self fullfilename:shortdir];

NSLog (@ "Full directory:%@", Fulldir);

if (![ FileManager Fileexistsatpath:fulldir]) {

[FileManager createdirectoryatpath:fulldir withintermediatedirectories:yes Attributes:nil Error:nil];

}

}

NSString *file = [self fullfilename:filename];

NSLog (@ "full file name:%@", file);

File not exists or want to overwrite it

if (Shouldoverwrite | |![ FileManager Fileexistsatpath:file]) {

BOOL suc = [FileManager createfileatpath:file contents:nil Attributes:nil];

NSLog (@ "Create file (%@)%@", File, suc @ "successfully": @ "failed");

}

}

@end

How to use:

Import Header file:

#"FZEasyFile.h" 

Determine if the address already exists

Isfileexists:@ "My/file/path/info.txt"] 

Create

CreateFile:"My/file/path/info.txtOverwrite:NO];  

Write to file: Splice and Overwrite write

WriteFile:"My/file/path/info.txtcontents:[@" Aappend:writefile:"my/file/path/ Info.txtcontents:[@ "bappend:YES];         

After these calling, the content of the file is "AB".

deleting files

RemoveFile: "my/file/path/info.txtremovefile:" My/file/path"];   

Get absolute path (actual storage path)

Fullfilename:"My/file/path/info.txt"]; 

Transformation

After getting the full name, you can pass it to the other API, such as Nsinputstream:

Nsinputstream *input = [inputstreamwithfileatpath:fullname];

IOS leverages Fzeasyfile local save and regular save