Clear the implementation code for the cache feature

Cache files stored in the Sandbox folder caches, the implementation of clearing the cache, the main implementation is to find files-delete files (which involves the calculation file size)

The following is the main code that implements the purge cache

Get Cache Path

-(NSString *) getcache{

NSString *cachepath = [Nssearchpathfordirectoriesindomains (nscachesdirectory, Nsuserdomainmask, YES) firstObject];

NSLog (@ "%@", CachePath);

return CachePath;

}

Get folder Size

-(CGFloat) foldersizeatpath{

Creating a File Manager

Nsfilemanager *manager = [Nsfilemanager Defaultmanager];

Get folder path

NSString *folderpath = [self getcache];

Returns 0 if the cache file does not exist

if (![ Manager Fileexistsatpath:folderpath]) {

return 0;

}

Calculate the size of the cache file if the cache file exists

Nsenumerator *childfilesenumerator = [[manager Subpathsatpath:folderpath] objectenumerator];//get enumerator from the file array in the cache path

NSString *filename = nil;//defines an empty file name used to get the file name in the enumerator

Long Long foldersize = 0;//defines and initializes a file size of 0

while ((FileName = [Childfilesenumerator nextobject]) = nil) {

Get the absolute path to a single file

NSString *fileabsolutepath = [FolderPath stringbyappendingpathcomponent:filename];

Define a single file variable and initialize it to 0

float singlefilesize = 0.0;

Gets the size of a single file if the individual file exists

if ([manager Fileexistsatpath:fileabsolutepath]) {

Attributesofitematpath: Get the properties of a file

Singlefilesize = [[Manager Attributesofitematpath:fileabsolutepath Error:nil] fileSize];

}

Foldersize + = Singlefilesize;

}

return foldersize;

}

Clear Cache

-(void) clearcache{

Nsfilemanager *manager = [Nsfilemanager Defaultmanager];

NSString *floderpath = [self getcache];

if ([manager Fileexistsatpath:floderpath]) {

Nsarray *childfiles = [manager Subpathsatpath:floderpath];

For (NSString *filename in childfiles) {

NSString *absolutepath = [Floderpath stringbyappendingpathcomponent:filename];

[Manager Removeitematpath:absolutepath Error:nil];

}

}

[[Sdimagecache Sharedimagecache] cleandisk];//because I used the sdwebimage this third-party class, so with this kind of self-bringing method to implement

}

Clear the implementation code for the cache feature