Delete files from NSCachesDirectory programmatically

问题

If I downloaded files in NSCachesDirectory programmatically in my app, is it also possible to delete the files programmatically?

回答1:

There may be many way for get full path of File from Directory, following is one of them.

NSArray *myPathList = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *mainPath    = [myPathList  objectAtIndex:0];

mainPath = [mainPath stringByAppendingPathComponent:DirectoryName];

Here mainPath is Full Path of File.

NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
BOOL fileExists = [fileManager fileExistsAtPath:mainPath];

if (fileExists)
{
     BOOL success = [fileManager removeItemAtPath:mainPath error:&error];
     if (!success) NSLog(@"Error: %@", [error localizedDescription]);

}

回答2:

I think this snippet should work for you:

NSFileManager *fileMgr = [NSFileManager defaultManager];
NSArray *fileArray = [fileMgr contentsOfDirectoryAtPath:directory error:nil];

for (NSString *filename in fileArray)  {
    [fileMgr removeItemAtPath:[directory stringByAppendingPathComponent:filename] error:NULL];
}

回答3:

combining anurag and iPatel

we get this final code that will clear all from the caches directory

    NSArray *myPathList = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *mainPath    = [myPathList  objectAtIndex:0];
NSFileManager *fileMgr = [NSFileManager defaultManager];
NSArray *fileArray = [fileMgr contentsOfDirectoryAtPath:mainPath error:nil];
for (NSString *filename in fileArray)  {
    [fileMgr removeItemAtPath:[mainPath stringByAppendingPathComponent:filename] error:NULL];
}

回答4:

If you want to delete specifically UIWebView cache then this could be helpful:

for(NSHTTPCookie *cookie in [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies]) {
     if([[cookie domain] isEqualToString:someNSStringUrlDomain]) {
         [[NSHTTPCookieStorage sharedHTTPCookieStorage] deleteCookie:cookie];
     }
}

来源：https://stackoverflow.com/questions/15064854/delete-files-from-nscachesdirectory-programmatically