UIScrollView基礎

 1 - (void)viewDidLoad {
 2     [super viewDidLoad];
 3     //滾動視圖，能夠對屏幕內容進行滾屏查看。
 4     
 5     UIScrollView* sv = [[UIScrollView alloc]init];
 6     
 7     sv.frame = CGRectMake(0, 0, 320, 576);
 8     //設置背景顏色
 9     sv.backgroundColor = [UIColor orangeColor];
10     
11     //設置畫布的大小，畫布顯示在滾動視圖內部，通常大於frame的大小。
12     sv.contentSize = CGSizeMake(320,576*5);
13     // 是否按照整頁來滾動
14     sv.pagingEnabled = YES;
15     // 是否能夠開啓滾動效果
16     sv.scrollEnabled = YES;
17     
18     //是否能夠邊緣彈動效果
19     sv.bounces = YES;
20     //開啓橫向彈動效果
21     sv.alwaysBounceHorizontal = YES;
22     //開啓縱向彈動效果
23     sv.alwaysBounceVertical = YES;
24     //顯示橫向滾動條
25     sv.showsHorizontalScrollIndicator = YES;
26     //顯示縱向滾動條
27     sv.showsVerticalScrollIndicator = YES;
28     
29     for(int i=0;i<2;i++)
30     {
31         NSString* strName = [NSString stringWithFormat:@"%d.jpg",i+1];
32         UIImage* image = [UIImage imageNamed:strName];
33         
34         UIImageView* iView =  [[UIImageView alloc] initWithImage:image];
35       
36         iView.frame = CGRectMake(0, 576*i, 320, 576);
37         
38         [sv addSubview:iView];
39         
40     }
41     
42     [self.view addSubview:sv];
43     
44 }