UIScrollView的基本用法和简单示例

 

是一个可以选择滑动的视图，用于显示更多的内容，可以通过手势放大或者缩小显示更多的内容。

 

有两个子类一个是UITableView，另一个是UITextView

 

第二、基本属性：

 

    scrollView=[[[UIScrollViewalloc] initWithFrame:CGRectMake(0,0, 320,250)] autorelease];

 

    scrollView.backgroundColor=[UIColorredColor];

 

    //设置内容的大小

 

    scrollView.contentSize=CGSizeMake(320*4,250);

 

    //当超出边界时表示是否可以反弹

 

    scrollView.bounces=YES;

 

    //是否分页

 

    scrollView.pagingEnabled=YES;

 

    //是否滚动

 

    scrollView.scrollEnabled=YES;

 

    //是否显示边界

 

    scrollView.showsHorizontalScrollIndicator=YES;

 

    //设置indicator的风格

 

    scrollView.indicatorStyle=UIScrollViewIndicatorStyleWhite;

 

    //提示用户

 

    [scrollViewflashScrollIndicators];

 

    //设置内容的边缘

 

    scrollView.contentInset=UIEdgeInsetsMake(0,50, 50,0);

 

    

 

    [self.viewaddSubview:scrollView];

 

    

 

    UILabel *label=[[[UILabelalloc] initWithFrame:CGRectMake(320,210, 320,40)] autorelease];

 

    label.backgroundColor=[UIColoryellowColor];

 

    label.text=@"学习scroolView";

 

    [scrollViewaddSubview:label];

 

 

    //调转到指定的offset

 

    [scrollViewsetContentOffset:CGPointMake(320,0)];

 

  第三、利用UIPageController和UIScrollView实现滚动图片

 

 

- (void)viewDidLoad  
{  
    [super viewDidLoad];  
    UIScrollView *ScrollView=[[[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 180)] autorelease];  
    ScrollView.delegate=self;  
    ScrollView.scrollsToTop=YES;  
    ScrollView.contentSize=CGSizeMake(320*5, 180);  
    ScrollView.backgroundColor=[UIColor clearColor];  
    ScrollView.pagingEnabled=YES;  
    ScrollView.showsHorizontalScrollIndicator=NO;  
    self.tableView.tableHeaderView=ScrollView;  
      
    for (int index=0; index<5; index++) {  
        UIImageView *imageView=[[UIImageView alloc] initWithFrame:CGRectMake(index*320, 0, 320, 180)];  
       imageView.image=[UIImage imageNamed:[NSString stringWithFormat:@"image%d.jpg",index+1]];  
        
        [ScrollView addSubview:imageView];  
        [imageView release];  
    }  
      
    UIPageControl *pageControl=[[[UIPageControl alloc] initWithFrame:CGRectMake(0, 150, 320, 30)] autorelease];  
    [self.tableView addSubview:pageControl];  
    pageControl.numberOfPages=5;  
    pageControl.tag=1001;  
  
}  
  
- (void)didReceiveMemoryWarning  
{  
    [super didReceiveMemoryWarning];  
    // Dispose of any resources that can be recreated.  
}  
  
#pragma mark - Table view data source  
  
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView  
{  
    return 1;  
}  
  
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section  
{  
    return 10;  
}  
  
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath  
{  
    static NSString *CellIdentifier = @"Cell";  
  
    UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:CellIdentifier];  
    if (cell==nil) {  
        cell=[[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];  
    }  
    cell.textLabel.text=[NSString stringWithFormat:@"row: %d",indexPath.row];  
      
    return cell;  
}  
  
#pragma mark -UIScrollViewDelegate  
- (void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView  
{  
    if ([scrollView isMemberOfClass:[UITableView class]]) {  
        NSLog(@"HELLO");  
    }else  
    {  
        int current=scrollView.contentOffset.x/320;  
        NSLog(@"scrollview :%f",scrollView.contentOffset.x);  
        UIPageControl *pageControl=(UIPageControl*)[self.view viewWithTag:1001];  
        pageControl.currentPage=current;  
    }  
}  

 

补充：综合编程 , 其他综合 ,