IOS中计算缓存文件的大小判断实例详解

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：

//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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