iOS 获取文件大小fileSize && 文件删除

NSDictionary *fileAttributes = [[NSFileManager defaultManager] fileAttributesAtPath:path traverseLink:YES];

unsigned long long length = [fileAttributes fileSize];

float ff = length/1024.0/1024.0;

NSLog(@"length== %.2f",ff);

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if ([[NSFileManager defaultManager] fileExistsAtPath:path]) {

//如果存在就删除

[[NSFileManager defaultManager] removeItemAtPath: path error:nil];

}