本文介紹了iOS清除所有緩存的實例代碼，分享給大家，具體如下：
計算緩存
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;}清除緩存
- (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]) { //清理緩存，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內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。
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