Clear the cache, calculate the folder size

#import "ViewController.h"

@interface viewcontroller ()

@end

@implementation Viewcontroller

-(void) viewdidload {

[Super viewdidload];

//

NSLog (@ " cache file size is %@", [NSString stringwithformat:@ "%0.2fm", [Self foldersizeatpath:[nsstring stringwithformat:@ "%@/library/caches/imagecache", Nshomedirectory ()]]);

#pragma mark sandbox:Library ( system files ) Temp ( temp file ) documents ( for App cache )

NSLog(@ "===%@===", [nsstring stringwithformat:@ "%0.2f", [ Self foldersizeatpath:@ "/users/liushuo/desktop/1567pro "]);

// Clear Cache

[self clearcachefrompath:@ "/users/liushuo/desktop/on- line related documents "];

// Here is the directory that corresponds to the cached image of sdwebimage

// can be changed according to the corresponding requirements of the corresponding file directory

additional setup after loading the view, typically from a nib.

}

size of a single file

-(long long) Filesizeatpath: (nsstring*) filepath{

Nsfilemanager* manager = [nsfilemanager defaultmanager];

if ([Manager Fileexistsatpath: FilePath]) {

return [[Manager Attributesofitematpath: FilePath error:nil] fileSize];

}

return 0;

}

Traverse folder to get folder size, return how many M

-(float ) Foldersizeatpath: (nsstring*) folderpath{

Nsfilemanager* manager = [nsfilemanager defaultmanager];

If (![ Manager Fileexistsatpath: FolderPath])

return 0;

// traverse all files in a folder through enumeration traversal

// Create an enumeration walker

nsenumerator *childfilesenumerator = [[Manager Subpathsatpath: folderpath] objectenumerator] ;

// Declare file name, file size first

nsstring* fileName;

long long foldersize = 0;

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

// Get the path of the current traversal file

nsstring* Fileabsolutepath = [FolderPath stringbyappendingpathcomponent: fileName];

// Call the encapsulated method to get a single file size

Foldersize + = [self filesizeatpath: Fileabsolutepath];

}

return foldersize/(1024.0*1024.0); convert to how many M to return

}

#pragma mark clears the cache size print nshomedritiony go to Documents to view the path

-(void) Clearcachefrompath: (nsstring*) path{

// Create a File Manager

Nsfilemanager * manager = [nsfilemanager defaultmanager];

if ([manager Fileexistsatpath:p Ath]) {

// If the file path exists to get all of the files

Nsarray * Filearr = [manager subpathsatpath:p Ath]; Locate the path to all the child files and save them in the array.

// need to convert to full path first

// Delete all sub-files directly

for (int i = 0; i < Filearr. Count; i++) {

nsstring * fileName = filearr[i];

// full path

nsstring * filePath = [path stringbyappendingpathcomponent: fileName];

NSLog(@ "%@", FilePath);

[Manager removeItemAtPath: FilePath error:nil];

}

}

}

-(void) didreceivememorywarning {

[Super didreceivememorywarning];

//Dispose of any resources, can be recreated.

}

@end

Clear the cache, calculate the folder size