-(void)SetRightBtn
{//返回按钮
// UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(0,0,44,44)];
// [button setBackgroundImage:[UIImage imageNamed:@"kqls.png"] forState:UIControlStateNormal];
// [button addTarget:self action:@selector(ShowKQlist:) forControlEvents:UIControlEventTouchDown];
// UIBarButtonItem *rightBarButton = [[UIBarButtonItem alloc] initWithCustomView:button];self.navigationItem.rightBarButtonItem = rightBarButton;
// [rightBarButton release];
UIBarButtonItem *rightBarButton = [[UIBarButtonItem alloc]initWithTitle:@"历史" style:UIBarButtonItemStylePlain target:self action:@selector(ShowKQlist:)];
self.navigationItem.rightBarButtonItem = rightBarButton;
}