1.找到SDImageCache類
2.計算緩存大小的方法：
-?(NSUInteger)getSize?{
__block?NSUInteger?size?=0;
dispatch_sync(self.ioQueue,?^{
NSDirectoryEnumerator *fileEnumerator?=?[_fileManager enumeratorAtPath:self.diskCachePath];
for (NSString *fileName?in?fileEnumerator)?{
NSString *filePath?=?[self.diskCachePath stringByAppendingPathComponent:fileName];
NSDictionary *attrs?=?[[NSFileManager defaultManager] attributesOfItemAtPath:filePath error:nil];
size?+=?[attrs fileSize];
}
});
returnsize;
}
3.
//?清除緩存
[[SDImageCaches haredImageCache] clearDisk];
