本文介绍了iOS清除所有缓存的实例代码，分享给大家，具体如下：

计算缓存

? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 NSString *libPath = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES)[0]; CGFloat fileSize=[self folderSizeAtPath:libPath]; - (float ) folderSizeAtPath:(NSString*) folderPath{ NSFileManager* manager = [NSFileManager defaultManager]; if (![manager fileExistsAtPath:folderPath]) return 0; NSEnumerator *childFilesEnumerator = [[manager subpathsAtPath:folderPath] objectEnumerator]; NSString* fileName; long long folderSize = 0; while ((fileName = [childFilesEnumerator nextObject]) != nil){ NSString* fileAbsolutePath = [folderPath stringByAppendingPathComponent:fileName]; folderSize += [self fileSizeAtPath:fileAbsolutePath]; } return folderSize/(1024.0*1024.0); } - (long long)fileSizeAtPath:(NSString*) filePath{ NSFileManager* manager = [NSFileManager defaultManager]; if ([manager fileExistsAtPath:filePath]){ return [[manager attributesOfItemAtPath:filePath error:nil] fileSize]; } return 0; }

清除缓存

? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 - (void)action:(id)sender { NSArray *paths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES); NSString *path = [paths lastObject]; NSArray *files = [[NSFileManager defaultManager] subpathsAtPath:path]; for (NSString *p in files) { NSError *error; NSString *Path = [path stringByAppendingPathComponent:p]; if ([[NSFileManager defaultManager] fileExistsAtPath:Path]) { //清理缓存，保留Preference，里面含有NSUserDefaults保存的信息 if (![Path containsString:@"Preferences"]) { [[NSFileManager defaultManager] removeItemAtPath:Path error:&error]; } }else{ } } }

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。

原文链接：http://www.jianshu.com/p/f1cef8ee94eb?utm_source=tuicool&utm_medium=referral