- (void)viewDidLoad {
[super viewDidLoad];
// [self firstUIScrollView];
[self secondUIScrollView];
}
// 给定的frame 正常的显示
- (void)firstUIScrollView{
UIScrollView *firstScroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 100,kScreenWidth , 300)];
//One
firstScroll.contentOffset = CGPointMake(kScreenWidth , 100);
firstScroll.contentSize = CGSizeMake(kScreenWidth * 3, 300);// 内容的大小
//firstScroll.contentInset = UIEdgeInsetsMake(10, 20, 30, 40);
// 滑动锁定 左右滑动的同时不可以上下滑动 反之也是
firstScroll.directionalLockEnabled = YES;
//bounces 是否有弹簧效果
firstScroll.bounces = YES;
firstScroll.alwaysBounceVertical = YES;
firstScroll.pagingEnabled = YES;// 分页效果
// yes--> 可以滑动 no---> 不可以滑动
firstScroll.scrollEnabled = YES;
// 显示水平滑动条 no ---> 不显示 yes ---> 显示
firstScroll.showsHorizontalScrollIndicator = YES;
// 显示垂直滑动条
firstScroll.showsVerticalScrollIndicator = YES;
// 指示条的位置
firstScroll.scrollIndicatorInsets = UIEdgeInsetsMake(10, 20, 30, 40);
// 它的值域是（0.0，1.0）
firstScroll.decelerationRate = 1.0;
//Two
// tracking 当touch后还没有拖动的时候值是YES，否则NO
if (firstScroll.tracking) {
NSLog(@"tracking = yes");
}
else{
NSLog(@"tracking = no");
}
firstScroll.minimumZoomScale = 0.1;
firstScroll.maximumZoomScale = 1.0;
firstScroll.backgroundColor = [UIColor cyanColor];
[self.view addSubview:firstScroll];
NSArray *array = @[@"two",@"one",@"two"];
for (int i = 0; i<3; i++) {
UIImageView *imageV = [[UIImageView alloc] initWithFrame:CGRectMake(i*kScreenWidth, 0, kScreenWidth,300)];
imageV.image = [UIImage imageNamed:[array objectAtIndex:i]];
[firstScroll addSubview:imageV];
}
}
// 使用自动约束
- (void)secondUIScrollView{
//initWithFrame:CGRectMake(0, 100,kScreenWidth , 300)
UIScrollView *second = [[UIScrollView alloc] init];
second.translatesAutoresizingMaskIntoConstraints = NO;
second.contentOffset = CGPointMake(kScreenWidth, 100);
second.contentSize = CGSizeMake(kScreenWidth * 3, 400);
second.pagingEnabled = YES;
second.backgroundColor = [UIColor redColor];
[self.view addSubview:second];
[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|[second]|" options:0 metrics:nil views:NSDictionaryOfVariableBindings(second)]];
[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-100-[second(400)]" options:0 metrics:nil views:NSDictionaryOfVariableBindings(second)]];
// 图片名字放在数组中
NSArray *array = @[@"two",@"one",@"two"];
for (int i = 0; i<3; i++) {
UIImageView *imageV = [[UIImageView alloc] initWithFrame:CGRectMake(i*kScreenWidth, 0, kScreenWidth,400)];
imageV.image = [UIImage imageNamed:[array objectAtIndex:i]];
[second addSubview:imageV];
}
}