NSInteger diskCapacity = [NSURLCache sharedURLCache].diskCapacity; NSInteger memoryCapacity = [NSURLCache sharedURLCache].memoryCapacity; /* 0にする */ [NSURLCache sharedURLCache].diskCapacity = 0; [NSURLCache sharedURLCache].memoryCapacity = 0; /* もとの大きさに戻す */ [NSURLCache sharedURLCache].diskCapacity = diskCapacity; [NSURLCache sharedURLCache].memoryCapacity = memoryCapacity;