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计算ios某个路径下文件的大小

2014-05-30 14:18 501 查看

首先调用这个方法

[self getMPSize]

-(NSString *)getMPSize {
NSString*sizeTypeW = @"bytes";

NSString * cachesString = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject];

NSString * imageFileString = [cachesString stringByAppendingPathComponent:@"DownloadImages"]; NSLog(@"====--------%@",imageFileString);
//这里是获得你的路径
NSFileManager *manager = [NSFileManager defaultManager];

long long app = [self folderSize:cachesString];
// 先计算总路径总大小
if([manager fileExistsAtPath:imageFileString] == YES){//判断你的子路径存不存在
long long working = [self folderSize:imageFileString];//存在就调用这个方法获得文件的大小
NSLog(@"-----------------------%llu",working);

if(working<1){
//从这里开始是计算文件大小
return @"Size: Zero KB";

}else{

if (working > 1024) {

//Kilobytes working = working / 1024; sizeTypeW = @" KB";

}

if (working > 1024) {

//Megabytes

working = working / 1024;

sizeTypeW = @" MB"; }

if (working > 1024) {

//Gigabytes

working = working / 1024;

sizeTypeW = @" GB"; }

return [NSString stringWithFormat:@" Working: %lld %@ ", working,sizeTypeW]; }

}else{
return [NSString stringWithFormat:@"App: %lld MB, Working: Zero KB",app/1024/1024];

}

[manager release]; }
//存在就调用这个方法获得文件的大小

- (unsigned long long int)folderSize:(NSString *)folderPath { //根据传过来的文件路径
NSArray *filesArray = [[NSFileManager defaultManager] subpathsOfDirectoryAtPath:folderPath error:nil]; //这是找到所有的文件夹
NSEnumerator *filesEnumerator = [filesArray objectEnumerator]; //遍历文件夹
NSString *fileName;

unsigned long long int fileSize = 0;

while (fileName = [filesEnumerator nextObject]) {

NSDictionary *fileDictionary = [[NSFileManager defaultManager] attributesOfItemAtPath:[folderPath stringByAppendingPathComponent:fileName] error:nil];

fileSize += [fileDictionary fileSize]; //得到总的大小 }

return fileSize;
//得到总大小并且返回 }

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