check enough space on iphone device before downloading files

Question

right now i am able to download remote files successfully,

but this is only if user can select one file if user select multiple file names and press download. So bef

Answer 1

Use this function:

#include <sys/param.h>  
#include <sys/mount.h>  

+(float) diskSpace {  
    NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);  
    struct statfs tStats;  
    statfs([[paths lastObject] cString], &tStats);  
    float total_space = (float)(tStats.f_blocks * tStats.f_bsize);  

    return total_space;  

    // for freespace:
    // float free_space = (float)(tStats.f_bavail * tStats.f_bsize);
    // return free_space
}

Answer 2

+ (long long)getFreeSpace {  
long long freeSpace = 0.0f;  
NSError *error = nil;  
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);  
NSDictionary *dictionary = [[NSFileManager defaultManager] attributesOfFileSystemForPath:[paths lastObject] error: &error];  

if (dictionary) {  
    NSNumber *fileSystemFreeSizeInBytes = [dictionary objectForKey: NSFileSystemFreeSize];  
    freeSpace = [fileSystemFreeSizeInBytes longLongValue];  
} else { 
  //Handle error
}  
return freeSpace; }

Use this code to query the filesystem for available free space.