IOS中计算缓存文件的大小判断,在这里分享一下自己的心得,希望和大家一起分享技术,如果有什么不足,还请大家指正。写出这篇目的,就是希望大家一起成长,我也相信技术之间没有高低,只有互补,只有分享,才能使彼此更加成长。
实例代码:
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//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);
}
}
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原文链接:http://blog.csdn.net/yishengzhiai005/article/details/72821579