IOS Get memory size usage (progress bar display)

First, get the device memory size method

//return storage memory consumption ratio-(NSString *) getfreediskspacerate{floatTotalspace; floatTotalfreespace=0. F; Nserror*error =Nil; Nsarray*paths =nssearchpathfordirectoriesindomains (NSDocumentDirectory, Nsuserdomainmask, YES); Nsdictionary*dictionary = [[Nsfilemanager Defaultmanager] attributesoffilesystemforpath:[paths Lastobject] Error: &ERROR]; if(dictionary) {NSNumber*filesystemsizeinbytes =[dictionary objectforkey:nsfilesystemsize]; NSNumber*freefilesystemsizeinbytes =[dictionary objectforkey:nsfilesystemfreesize]; Totalspace= [Filesystemsizeinbytes floatvalue]/1024.0f/1024.0f/1024.0f; Totalfreespace= [Freefilesystemsizeinbytes floatvalue]/1024.0f/1024.0f/1024.0f; //totalstring, freestring is to define two global variables to display the size of the data on the progress bar withTotalstring =[self getfilesizestring:[filesystemsizeinbytes floatvalue]]; Freestring=[self getfilesizestring:[freefilesystemsizeinbytes floatvalue]]; NSLog (@"Print totalstring:%@,freestring:%@", totalstring,freestring); NSLog (@"memory capacity of%.2f GB with%.2f GB free Memory available.", Totalspace, totalfreespace); } Else{NSLog (@"Error Obtaining System Memory Info:domain =%@, Code =%@", [error domain], [error code]); } nsstring*FREESTR = [NSString stringWithFormat:@"%.3f", (Totalspace-totalfreespace)/totalspace];//progress bar ratio    returnfreestr;}

Add: Another way to get memory size

First import # include <sys/param.h> and # include <sys/mount.h>

Method:

Nsfilemanager *FM =[Nsfilemanager Defaultmanager]; Nsdictionary*fat =[FM attributesoffilesystemforpath:nshomedirectory () Error:nil]; NSLog (@"Capacity:%lldg usable capacity:%lldg", [[Fat objectforkey:nsfilesystemsize]longlongvalue]/1000000000, [[Fat objectforkey:nsfilesystemfreesize]longlongvalue]/1000000000); structStatfs buf; Long LongFreeSpace =-1; if(Statfs ("/ var", &buf) >=0) {FreeSpace= (Long Long) (Buf.f_bsize *buf.f_bfree); } NSLog (@"%@", [NSString stringWithFormat:@"the remaining storage space for the phone is:%qi GB", freespace/1024x768/1024x768/1024x768]);

second, the method of obtaining the memory size value (g, M, KB units according to the actual situation)

-(NSString *) Getfilesizestring: (cgfloat) size{if(size>1024x768*1024x768*1024x768){        return[NSString stringWithFormat:@"%.1FG", size/1024x768/1024x768/1024x768];//greater than 1G, the string converted to G-Unit    }    Else if(size<1024x768*1024x768*1024x768&&size>=1024x768*1024x768)//greater than 1M, the string converted into M-units    {        return[NSString stringWithFormat:@"%.1FM", size/1024x768/1024x768]; }    Else if(size>=1024x768&&size<1024x768*1024x768)//less than 1M, but more than 1KB, convert to KB units    {        return[NSString stringWithFormat:@"%.1FK", size/1024x768]; }    Else//The rest is less than 1K, then converted into B units    {        return[NSString stringWithFormat:@"%.1FB", size]; }}

third, the virtual machine (the size of the space shown here is relatively large, indicating that the actual computer memory situation, the real machine on the normal display)

Iv. Other

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IOS Get memory size usage (progress bar display)