Object-C 計(jì)算緩存大小

//計(jì)算緩存大小
- (CGFloat)calculateCache{
    CGFloat folderSize = 0;
    //獲取路徑
    NSString *cachePath = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory,NSUserDomainMask,YES)firstObject];
    //獲取所有文件的數(shù)組
    NSArray *files = [[NSFileManager defaultManager] subpathsAtPath:cachePath];
    NSLog(@"文件數(shù)：%ld",files.count);
    for(NSString *path in files) {
        NSString*filePath = [cachePath stringByAppendingString:[NSString stringWithFormat:@"/%@",path]];
        //累加
        folderSize += [[NSFileManager defaultManager]attributesOfItemAtPath:filePath error:nil].fileSize;
    }
    //轉(zhuǎn)換為M為單位
    CGFloat sizeM = folderSize /1024.0/1024.0;
    return sizeM;
}

//清除緩存
- (void)removeCache{
    //獲取路徑
    NSString*cachePath = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory,NSUserDomainMask,YES)objectAtIndex:0];
    //返回路徑中的文件數(shù)組
    NSArray*files = [[NSFileManager defaultManager]subpathsAtPath:cachePath];
    NSLog(@"文件數(shù)：%ld",[files count]);
    for(NSString *p in files){
        NSError*error;
        NSString*path = [cachePath stringByAppendingString:[NSString stringWithFormat:@"/%@",p]];
        if([[NSFileManager defaultManager]fileExistsAtPath:path]) {
            BOOL isRemove = [[NSFileManager defaultManager]removeItemAtPath:path error:&error];
            if(isRemove) {
                NSLog(@"清除成功");
            } else {
                NSLog(@"清除失敗");
            } 
        }
    }
}

Swift計(jì)算緩存

//統(tǒng)計(jì)緩存文件大小
func fileSizeOfCache()-> Int {
    // 取出cache文件夾目錄 緩存文件都在這個(gè)目錄下 -->緩存目錄路徑
    let cachePath = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.cachesDirectory, FileManager.SearchPathDomainMask.userDomainMask, true).first
    print(cachePath)
    // 取出文件夾下所有文件數(shù)組
    let fileArr = FileManager.default.subpaths(atPath: cachePath!)
    //快速枚舉出所有文件名 計(jì)算文件大小
    var size = 0
    for file in fileArr! {
        // 把文件名拼接到路徑中
        let path = cachePath?.appending("/\(file)")
        // 取出文件屬性
        let floder = try! FileManager.default.attributesOfItem(atPath: path!)
        // 用元組取出文件大小屬性
        for (abc, bcd) in floder {
            // 累加文件大小
            if abc == FileAttributeKey.size {
                size += (bcd as AnyObject).integerValue
            }
        }
    }
    let mm = size / 1024 / 1024
    return mm
}

//刪除緩存文件
func clearCache() {
    // 取出cache文件夾目錄 緩存文件都在這個(gè)目錄下
    let cachePath = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.cachesDirectory, FileManager.SearchPathDomainMask.userDomainMask, true).first
    
    // 取出文件夾下所有文件數(shù)組
    let fileArr = FileManager.default.subpaths(atPath: cachePath!)
    
    // 遍歷刪除
    for file in fileArr! {
        let path = cachePath?.appending("/\(file)")
        if FileManager.default.fileExists(atPath: path!) {
            do {
                try FileManager.default.removeItem(atPath: path!)
            } catch {
                
            }
        }
    }
}