把在Cell上面創建的控件放在Cell==nil的判斷裡面，這樣，每次進來就會先判斷有沒有，就可以避免數據重復創建，導致視圖越蓋越厚

if (cell==nil) {

cell=[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIDD];

self.inviteLabel=[[UILabel alloc]initWithFrame:CGRectMake(10,5,[UIScreen mainScreen].bounds.size.width-20,120)];

self.inviteLabel.numberOfLines=0;

self.inviteLabel.text=cell_info.title;

self.inviteLabel.textColor=LABEL_TEXTCOLOR;

int width=100;

int height=40;

self.button=[[UIButton alloc]initWithFrame:CGRectMake([UIScreen mainScreen].bounds.size.width/2-width/2,120+10, width, height)];

self.button.backgroundColor=[UIColor redColor];

[self.button setBackgroundImage:[UIImage imageNamed:cell_info.cp] forState:UIControlStateNormal];

NSLog(@"cell_info.cp:%@",cell_info.cp);

//增加長按手勢

UILongPressGestureRecognizer *longPress=[[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPress:)];

[self.inviteLabel addGestureRecognizer:longPress];

longPress.minimumPressDuration=1.0;

[cell.contentView addSubview:self.button];

[cell.contentView addSubview:self.inviteLabel];

cell.backgroundColor=CELL_BACK_COLOR;

}