UIScrollView 滚动视图

概述UIScrollView 滚动视图

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/////记得添加 代理 <uiscrollviewdelegate> UIScrollVIEw* sv = [[UIScrollVIEw alloc] initWithFrame:CGRectMake(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);    //锁定方向，左右滑动和上下滑动不能同时进行    sv.directionalLockEnabled = YES;    //反d效果    sv.bounces = YES;    //水平方向上保持反d效果    sv.alwaysBounceHorizontal = YES;    //垂直方向上保持反d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);    //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 * 320,460)];        subSv.delegate = self;        subSv.minimumZoomScale = 0.5;        subSv.maximumZoomScale = 2.0;        [sv addSubvIEw:subSv];        [subSv release];                 UIImageVIEw* imageVIEw = [[UIImageVIEw alloc] initWithFrame:CGRectMake(0,460)];        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(100,40);    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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