//document目录下 构建一个DEMO目录
[DYFileManager documentDirPathWithPath:@"DEMO"]
//document目录下构建一个demo.txt文件
[DYFileManager documentDirPathWithPath:@"demo.txt"]
    

//创建文件
NSString* filePath = [[DYFileManager documentDirPathWithPath:@"DEMO"] stringByAppendingPathComponent:@"demo.log"];
NSError* error = nil;
[DYFileManager createFileWithPath:filePath content:@[@"world",@"hello"]];
    
//创建目录
NSString * demoDir = [DYFileManager documentDirPathWithPath:@"DEMO"];
NSError * error = nil;
[DYFileManager createDirectoryWithDirPath:demoDir];

//删除单个文件
NSString* demoDir = [DYFileManager documentDirPathWithPath:@"DEMO"];
NSString* filePath = [demoDir stringByAppendingPathComponent:@"demo.log"];
 NSError* error = nil;
[DYFileManager removeFileWithPath:filePath error:&error];

//批量删除文件
NSString* demoDir = [DYFileManager documentDirPathWithPath:@"DEMO"];
NSError* error = nil;
[DYFileManager removeFilesInDirectoryWithPath:demoDir error:&error];
    
//删除目录
NSString* demoDir = [DYFileManager documentDirPathWithPath:@"DEMO"];
[DYFileManager removeDirectoryWithPath:demoDir]

 NSString* demoDir = [DYFileManager documentDirPathWithPath:@"DEMO"];
NSString* fromPath = [demoDir stringByAppendingPathComponent:@"demo.log"];
NSString* toPath = [demoDir stringByAppendingPathComponent:@"demo2.log"];
NSError* error = nil;
[DYFileManager copyFileFromPath:fromPath toPath:toPath error:&error];

NSString* demoDir = [DYFileManager documentDirPathWithPath:@"DEMO"];
NSString* testDir = [DYFileManager documentDirPathWithPath:@"TEST"];
NSString* fromPath = [demoDir stringByAppendingPathComponent:@"demo.log"];
NSString* toPath = [testDir stringByAppendingPathComponent:@"demo.log"];
NSError* error = nil;
[DYFileManager moveFileFromPath:fromPath toPath:toPath overwrite:YES error:&error];

NSString* demoDir = [DYFileManager documentDirPathWithPath:@"DEMO"];
    NSError* error = nil;
    [DYFileManager renameFileWithPath:[demoDir stringByAppendingPathComponent:@"demo.log"] withName:@"demo.txt" error:&error];

NSString* demoDir = [DYFileManager documentDirPathWithPath:@"DEMO"];
/*prefix
    NSArray* files = [DYFileManager filesInDirectoryWithPath:demoDir withPrefix:@"fil"];
*/
/* suffix
    NSArray* files = [DYFileManager filesInDirectoryWithPath:demoDir withSuffix:@"le"];
*/
/*extension
    NSArray* files = [DYFileManager filesInDirectoryWithPath:demoDir withExtension:@"txt"];
*/
/*deep:是否获取文件下所有文件（包括子目录下）*/
    NSArray* files = [DYFileManager filesInDirectoryWithPath:gdyDir deep:YES];

NSString* demoDir = [DYFileManager documentDirPathWithPath:@"DEMO"];
/*文件属性
    NSDictionary* dicAttr = [DYFileManager attributesOfItemWithPath:[demoDir stringByAppendingPathComponent:@"demo.log"]];
    NSLog(@"attributes :%@",dicAttr);
*/
    
/*  文件某一特定属性
    NSNumber* fileSize = (NSNumber*)[DYFileManager attributeOfItemWithPath:[demoDir stringByAppendingPathComponent:@"demo.log"] forKey:NSFileSize];
    NSLog(@"filesize:%@    formatSize:%@",fileSize,[DYFileManager sizeFormatted:(NSNumber*)fileSize]);
*/

/*字典、数组、字符串、nsdata，json，自定义model*/
 People* p = [[People alloc]init];
 p.name = @"***";
 p.sex = @"man";
 p.height = @"1.87";

 NSArray* arrContent = @[@{@"key1":@"value1",@"key2":@"value2"},@[@"value1",@"value2",@"value3"],@"string1",[@"string2" dataUsingEncoding:NSUTF8StringEncoding],p];
 
 for (int i=0; i<5; i++) {
     
     NSObject*  obj = arrContent[i];
     NSString* filePath = [demoDir stringByAppendingPathComponent:[NSString stringWithFormat:@"file%d.txt",i+1]];
     if(![DYFileManager writeContent:obj path:filePath]){
         [DYFileManager DYLog:@"往文件中写入内容错误"];
     }
 }

NSString * demoDir = [DYFileManager documentDirPathWithPath:@"DEMO"];
 //dictionary
 NSString* filePath1 = [demoDir stringByAppendingPathComponent:@"file1"];
 NSDictionary* dic = [DYFileManager readContentAsNSDictionaryWithPath:filePath1];
 [DYFileManager DYLog:[NSString stringWithFormat:@"file1:%@",dic]];
 
 //array
 NSString* filePath2 = [demoDir stringByAppendingPathComponent:@"file2"];
 NSArray* array = [DYFileManager readContentAsNSArrayWithPath:filePath2];
 [DYFileManager DYLog:[NSString stringWithFormat:@"file2:%@",array]];
 
 //string
 NSString* filePath3 = [demoDir stringByAppendingPathComponent:@"file3"];
 NSString* tempStr = [DYFileManager readContentAsStringWithPath:filePath3];
 [DYFileManager DYLog:[NSString stringWithFormat:@"file3:%@",tempStr]];
 
 //NSData
 NSString* filePath4 = [demoDir stringByAppendingPathComponent:@"file4"];
 NSData* data = [DYFileManager readContentAsNSDataWithPath:filePath4];
 [DYFileManager DYLog:[NSString stringWithFormat:@"file4:%@",data]];
 
 //custom object
 NSString* filePath6 = [demoDir stringByAppendingPathComponent:@"file5"];
 People* p = (People*)[DYFileManager readContentAsCustomModelWithPath:filePath6];
 [DYFileManager DYLog:[NSString stringWithFormat:@"file6:%@",p]];