iOS 计算缓存文件的大小

//获取缓存文件路径
-(NSString *)getCachesPath{
// 获取Caches目录路径
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *cachesDir = [paths objectAtIndex:0];

NSString *filePath = [cachesDir stringByAppendingPathComponent:@"com.nickcheng.NCMusicEngine"];

return filePath;
}
///计算缓存文件的大小的M
- (long long) fileSizeAtPath:(NSString*) filePath{
NSFileManager* manager = [NSFileManager defaultManager];
if ([manager fileExistsAtPath:filePath]){

//        //取得一个目录下得所有文件名
//        NSArray *files = [manager subpathsAtPath:filePath];
//        NSLog(@"files1111111%@ == %ld",files,files.count);
//
//        // 从路径中获得完整的文件名（带后缀）
//        NSString *exe = [filePath lastPathComponent];
//        NSLog(@"exeexe ====%@",exe);
//
//        // 获得文件名（不带后缀）
//        exe = [exe stringByDeletingPathExtension];
//
//        // 获得文件名（不带后缀）
//        NSString *exestr = [[files objectAtIndex:1] stringByDeletingPathExtension];
//        NSLog(@"files2222222%@  ==== %@",[files objectAtIndex:1],exestr);

return [[manager attributesOfItemAtPath:filePath error:nil] fileSize];
}

return 0;
}
- (float ) folderSizeAtPath:(NSString*) folderPath{
NSFileManager* manager = [NSFileManager defaultManager];
if (![manager fileExistsAtPath:folderPath]) return 0;
NSEnumerator *childFilesEnumerator = [[manager subpathsAtPath:folderPath] objectEnumerator];//从前向后枚举器／／／／//
NSString* fileName;
long long folderSize = 0;
while ((fileName = [childFilesEnumerator nextObject]) != nil){
NSLog(@"fileName ==== %@",fileName);
NSString* fileAbsolutePath = [folderPath stringByAppendingPathComponent:fileName];
NSLog(@"fileAbsolutePath ==== %@",fileAbsolutePath);
folderSize += [self fileSizeAtPath:fileAbsolutePath];
}
NSLog(@"folderSize ==== %lld",folderSize);
return folderSize/(1024.0*1024.0);
}
////////////
-(void)ss{
// 获取Caches目录路径
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *cachesDir = [paths objectAtIndex:0];

NSLog(@"cachesDircachesDir == %@",cachesDir);
//读取缓存里面的具体单个文件/或全部文件//
NSString *filePath = [cachesDir stringByAppendingPathComponent:@"com.nickcheng.NCMusicEngine"];
NSArray *array = [[NSArray alloc]initWithContentsOfFile:filePath];
NSLog(@"filePathfilePath%@ ==array==== %@",filePath, array);

NSFileManager* fm=[NSFileManager defaultManager];
if([fm fileExistsAtPath:filePath]){
//取得一个目录下得所有文件名
NSArray *files = [fm subpathsAtPath:filePath];
NSLog(@"files1111111%@ == %ld",files,files.count);

// 获得文件名（不带后缀）
NSString * exestr = [[files objectAtIndex:1] stringByDeletingPathExtension];
NSLog(@"files2222222%@  ==== %@",[files objectAtIndex:1],exestr);
}

}