UI<03>

//声明 UIScrollView-》#27932A  #952775 #602AAB
@property (nonatomic,strong) UIScrollView *scrollview;
//声明 UIImageView

@property (nonatomic,strong) UIImageView *imageview;

 

    //初始化 UIScrollView
    self.scrollview = [[UIScrollView alloc] init];

    //设置 frame

    self.scrollview.frame = self.imageview.bounds;

    //设置背景色
    self.scrollview.backgroundColor = [UIColor blueColor];
    //设置滚动范围
    self.scrollview.contentSize = CGSizeMake(self.imageview.image.size.width, self.imageview.image.size.height);
    //设置滚动的位置
    self.scrollview.contentOffset = CGPointMake(0,0);
    //设置内边距
    self.scrollview.contentInset = UIEdgeInsetsMake(0,0, 80, 100)
    ;
    //设置是否有弹簧效果
    self.scrollview.bounces = YES;
    //默认no，控制垂直方向遇到边框是否反弹(但bounces为NO时，它为yes，也不反弹)
    self.scrollview.alwaysBounceVertical = YES;
    //默认no，控制水平方向遇到边框是否反弹(但bounces为NO时，它为yes，也不反弹)
    self.scrollview.alwaysBounceHorizontal = YES;
    //是否允许滚动到顶部
    self.scrollview.scrollsToTop = YES;
    //设置是否分页
    self.scrollview.pagingEnabled = NO;
    //设置是否允许拖动
    self.scrollview.scrollEnabled = YES;
    //设置是否显示水平滚动条
    self.scrollview.showsHorizontalScrollIndicator = YES;
    //设置是否显示垂直滚动条
    self.scrollview.showsVerticalScrollIndicator = YES;
    //设置滚动条的位置
    self.scrollview.scrollIndicatorInsets = UIEdgeInsetsMake(0,0,0,0);
    //设置滚动条的样式
    self.scrollview.indicatorStyle = UIScrollViewIndicatorStyleDefault;
   
    //设置 代理
    self.scrollview.delegate = self;
   
    //设置最大／最小缩放比
    self.scrollview.maximumZoomScale = 1.0;
    self.scrollview.minimumZoomScale = 3.5;
   
   
    [self.view addSubview:self.scrollview];

    [self.scrollview addSubview:self.imageview];

 

 

 

    CGFloat Y = self.scrollview.contentOffset.y + 5;
    CGFloat X = self.scrollview.contentOffset.x + 5;
    //设置滚动的位置
    [self.scrollview setContentOffset:CGPointMake(X, Y) animated:YES];
   

 

   

//遵守代议 ：UIScrollViewDelegate

#pragma mark - Delegate

//正在滚动
- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
   
    NSLog(@"正在滚动...");
   
}
//即将开始滚动。
-(void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{
   
     NSLog(@"即将开始滚动...");
   
}
//完成滚动（松手后调用）
-(void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)targetContentOffset{
   
    NSLog(@"完成滚动...");
   
}
//开始减速滚动（完成滚动 调用）
-(void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView{
   
    NSLog(@"开始减速滚动...");
   
}
//结束减速滚动 （滚动结束调用）
-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{
   
    NSLog(@"结束减速滚动...");
   
}
//滚动到顶部
-(BOOL)scrollViewShouldScrollToTop:(UIScrollView *)scrollView{
   
     NSLog(@"滚动到顶部...");
    return YES;
}
//滚动到顶部调用（scrollsToTop 设置为YES时点击状态栏调用）
-(void)scrollViewDidScrollToTop:(UIScrollView *)scrollView{
   
     NSLog(@"滚动到顶部调用...");
}
//设置缩放的对象
-(UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{
   
   
    return self.imageview;
   
}
//即将开始缩放
-(void)scrollViewWillBeginZooming:(UIScrollView *)scrollView withView:(UIView *)view{
   
      NSLog(@"即将开始缩放...");
   
}
//正在缩放
-(void)scrollViewDidZoom:(UIScrollView *)scrollView{
   
    NSLog(@"正在缩放...");
   

}