iOS开发——实用技术OC片&点击状态栏回到顶部

 1 self.tdoclist=[NSMutableArray arrayWithCapacity:10];
 2 
 3     for (int i=0; i<[self.category count]+1; i++) {
 4 
 5         [[[CommenData alloc]init] setCategoryIndex:[self getCategoryIndex:i]];
 6 
 7         if (i==0) {
 8 
 9             self.doctable=[self.storyboard instantiateViewControllerWithIdentifier:@"docview"];
10 
11             self.doctable.view.frame=CGRectMake(r.size.width*i, 0.0, r.size.width, r.size.height-40);
12 
13             [self addChildViewController:self.doctable];
14 
15             self.doctable.tableView.scrollsToTop=YES;
16 
17             [self.tdoclist addObject:self.doctable];
18 
19             [self.tableScroll addSubview:self.doctable.view];
20 
21         }else{
22 
23             self.tdoctable=[self.storyboard instantiateViewControllerWithIdentifier:@"tdocview"];
24 
25             self.tdoctable.view.frame=CGRectMake(r.size.width*i, 0.0, r.size.width, r.size.height-40);
26 
27             [self addChildViewController:self.tdoctable];
28 
29             self.tdoctable.tableView.scrollsToTop=NO;
30 
31             [self.tdoclist addObject:self.tdoctable];
32 
33             [self.tableScroll addSubview:self.tdoctable.view];
34 
35         }
36 
37     }

 1 -(void)scrollViewDidScroll:(UIScrollView *)scrollView{
 2 
 3     //加载之后的一页
 4 
 5     if (scrollView==self.tableScroll) {
 6 
 7                 CGFloat pageWidth=scrollView.frame.size.width;
 8 
 9         int page=floor((scrollView.contentOffset.x-pageWidth/2)/pageWidth)+1;
10 
11         if (page!=indexPage) {
12 
13             //可以继续滚动
14 
15             if (indexPage<[self.category count]+1) {
16 
17                 indexPage=page;
18 
19                 [self.scrollnavi setSelectedIndex:indexPage];
20 
21                 for (int i=0; i<self.tdoclist.count; i++) {
22 
23                     TDocTableViewController *tdocs = self.tdoclist[i] ;
24 
25                     if (i==indexPage) {
26 
27                         tdocs.tableView.scrollsToTop=YES;
28 
29                     }else{
30 
31                         tdocs.tableView.scrollsToTop=NO;
32 
33                     }
34 
35                 }
36 
37                 //若直接用self.tdoc 只会刷新最后一个页面
38 
39                  TDocTableViewController *tdoc = self.tdoclist[indexPage] ;
40 
41                 [tdoc refreshData];
42 
43             }
44 
45         }
46 
47     }
48 
49 }