UIScrollView 滚动视图

/////记得添加 代理 <UIScrollViewDelegate>     UIScrollView* sv = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 460)];      [self.view addSubview:sv];      [sv release];      //常用属性      //真正大小,在这里frame仅代表可视位置和范围      sv.contentSize = CGSizeMake(320 * 17, 460 * 2);      //偏移量,frame左上角顶点相对于contentView左上角顶点的偏移量      sv.contentOffset = CGPointMake(0, 0);      //[sv setContentOffset: animated:]      //分页      sv.pagingEnabled = YES;      //设置额外的空间      sv.contentInset = UIEdgeInsetsMake(0, 0, 0, 0);      //锁定方向，左右滑动和上下滑动不能同时进行      sv.directionalLockEnabled = YES;      //反弹效果      sv.bounces = YES;      //水平方向上保持反弹效果      sv.alwaysBounceHorizontal = YES;      //垂直方向上保持反弹效果      sv.alwaysBounceVertical = YES;      //开启滑动      sv.scrollEnabled = YES;      //隐藏水平状态条      sv.showsHorizontalScrollIndicator = YES;      //隐藏垂直状态条      sv.showsVerticalScrollIndicator = YES;      //状态条位置      //sv.scrollIndicatorInsets = UIEdgeInsetsMake(100, 100, 100, 100);      //状态条类型      sv.indicatorStyle = UIScrollViewIndicatorStyleDefault;      //减速速率 范围0~1      sv.decelerationRate = 0.5;      //delaysContentTouches      //sv.delaysContentTouches = NO;      sv.delegate = self;      sv.tag = 10;             //添加内容  图片      for (int i = 0; i < 17; i++) {          UIScrollView* subSv = [[UIScrollView alloc] initWithFrame:CGRectMake(i * 320, 0, 320, 460)];          subSv.delegate = self;          subSv.minimumZoomScale = 0.5;          subSv.maximumZoomScale = 2.0;          [sv addSubview:subSv];          [subSv release];                     UIImageView* imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 320, 460)];          imageView.image = [UIImage imageNamed:[NSString stringWithFormat:@"10_%d.jpg",i]];          [subSv addSubview:imageView];          [imageView release];      }      //这个button 只显示在第一张图片上      UIButton* button = [UIButton buttonWithType:UIButtonTypeRoundedRect];      button.frame = CGRectMake(100, 100, 100, 40);      button.backgroundColor = [UIColor yellowColor];      [sv addSubview:button];      [button addTarget:self action:@selector(buttonClick) forControlEvents:UIControlEventTouchUpInside];                    ///事件      - (void)buttonClick{      NSLog(@"点击了");  //    UIScrollView* sv = (UIScrollView*)[self.view viewWithTag:10];  //    [sv setContentOffset:CGPointMake(320 * 5, 0) animated:YES];      self.view.hidden=YES;  }     //缩放  - (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{      if (scrollView.tag == 10) {          return nil;      }      for (UIView* view in scrollView.subviews) {          if ([view isKindOfClass:[UIImageView class]]) {              return view;          }      }      return nil;  }        //滑动调用，contentOffSet发生偏移  - (void)scrollViewDidScroll:(UIScrollView *)scrollView{      //int page = scrollView.contentOffset.x / 320;      //NSLog(@"%d",page);     }     //将要开始拖拽  - (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{      NSLog(@"将要开始拖拽");  }     //将要结束拖拽  - (void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)targetContentOffset{      NSLog(@"将要结束拖拽");  }     //结束拖拽  - (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{      NSLog(@"结束拖拽 %d",decelerate);  }     //将要开始减速  - (void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView{      NSLog(@"将要开始减速");  }     //结束减速  - (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{      NSLog(@"结束减速");  }     - (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView{      NSLog(@"结束动画");  }     - (BOOL)scrollViewShouldScrollToTop:(UIScrollView *)scrollView{      NSLog(@"要滑动到顶部");      return YES;  }     - (void)scrollViewDidScrollToTop:(UIScrollView *)scrollView{      NSLog(@"已经滑动到顶部");  }           //将要开始缩放  - (void)scrollViewWillBeginZooming:(UIScrollView *)scrollView withView:(UIView *)view{      NSLog(@"开始缩放");  }     //正在缩放  - (void)scrollViewDidZoom:(UIScrollView *)scrollView{      NSLog(@"缩放中");  }     //结束缩放  - (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(float)scale{      NSLog(@"缩放结束:%f",scrollView.zoomScale);  }
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UIScrollView 滚动视图
