1.常规文件获取删除
2.SDWebImage获取删除
1.1沙盒路径获取
//NSDocumentDirectory、NSCachesDirectory、NSLibraryDirectory 沙盒的document、caches、library
NSArray *pathss = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [pathss objectAtIndex:0];
NSString *imgCachePath = [NSString stringWithFormat:@"%@/Caches/default/com.hackemist.SDWebImageCache.default",documentsDirectory];
if ([fileManager fileExistsAtPath:imgCachePath]) {
NSLog(@"用户文件已存在");
NSString *STR = [self getCacheSizeWithFilePath:imgCachePath];
deleteCachesImgValue.text = STR;
}else {
NSLog(@"用户文件不存在");
deleteCachesImgValue.text = @"0 K";
}
1.2缓存大小计算
- (NSString *)getCacheSizeWithFilePath:(NSString *)path{
//调试
#ifdef DEBUG
//如果文件夹不存在或者不是一个文件夹那么就抛出一个异常
//抛出异常会导致程序闪退，所以只在调试阶段抛出，发布阶段不要再抛了,不然极度影响用户体验
BOOL isDirectory = NO;
BOOL isExist = [fileManager fileExistsAtPath:path isDirectory:&isDirectory];
if (!isExist || !isDirectory)
{
NSException *exception = [NSException exceptionWithName:@"fileError" reason:@"please check your filePath!" userInfo:nil];
[exception raise];
}
// NSLog(@"debug");
//发布
#else
// NSLog(@"post");
#endif
//获取“path”文件夹下面的所有文件
NSArray *subpathArray= [fileManager subpathsAtPath:path];
NSString *filePath = nil;
NSInteger totleSize=0;
for (NSString *subpath in subpathArray)
{
//拼接每一个文件的全路径
filePath =[path stringByAppendingPathComponent:subpath];
//isDirectory，是否是文件夹，默认不是
BOOL isDirectory = NO;
//isExist，判断文件是否存在
BOOL isExist = [fileManager fileExistsAtPath:filePath isDirectory:&isDirectory];
if (!isExist || isDirectory || [filePath containsString:@".DS"]) continue;
NSDictionary *dict= [fileManager attributesOfItemAtPath:filePath error:nil];
NSInteger size=[dict[@"NSFileSize"] integerValue];
totleSize+=size;
}
//将文件夹大小转换为 M/KB/B
NSString *totleStr = nil;
if (totleSize > 1000 * 1000)
{
totleStr = [NSString stringWithFormat:@"%.1fM",totleSize / 1000.0f /1000.0f];
}else if (totleSize > 1000)
{
totleStr = [NSString stringWithFormat:@"%.1fKB",totleSize / 1000.0f ];
}else
{
totleStr = [NSString stringWithFormat:@"%.1fB",totleSize / 1.0f];
}
return totleStr;
}
1.3缓存清理
//删除图片缓存方法
- (void)deleteimages{
NSArray *pathss = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [pathss objectAtIndex:0];
NSString *imgCachePath = [NSString stringWithFormat:@"%@/Caches/default/com.hackemist.SDWebImageCache.default",documentsDirectory];
BOOL res=[fileManager removeItemAtPath:imgCachePath error:nil];
if (res) {
NSLog(@"文件删除成功");
}else{
NSLog(@"文件删除失败");
}
}
2.1SD获取、计算
NSUInteger intg = [[SDImageCache sharedImageCache] getSize];
NSString * currentVolum = [NSString stringWithFormat:@"%@",[self fileSizeWithInterge:intg]];
2.2SD清理
[[[SDWebImageManager sharedManager] imageCache] clearMemory]; //内存
[[[SDWebImageManager sharedManager] imageCache] clearDisk]; //磁盘
