UIView升级&UIImageView
【UIView属性及方法】
//@property(nonatomic) CGRect frame;
//@property(nonatomic) CGRect bounds;
//@property(nonatomic,readonly) UIView *superview;
//@property(nonatomic,readonly,copy) NSArray *subviews;
//- (void)addSubview:(UIView *)view;
//- (void)insertSubview:(UIView *)view atIndex:(NSInteger)index;
//- (void)insertSubview:(UIView *)view belowSubview:(UIView *)siblingSubview;
//- (void)insertSubview:(UIView *)view aboveSubview:(UIView *)siblingSubview;
//- (void)removeFromSuperview;
//2- (void)exchangeSubviewAtIndex:(NSInteger)index1 withSubviewAtIndex:(NSInteger)index2;
//- (void)bringSubviewToFront:(UIView *)view;
//- (void)sendSubviewToBack:(UIView *)view;
//yes- (BOOL)isDescendantOfView:(UIView *)view;
通过找- (UIView *)viewWithTag:(NSInteger)tag;
【跟随/停靠模式】
//允许子视图跟随，默认就是yes(这个是给父视图设置的)
@property(nonatomic) BOOL autoresizesSubviews;
//随父视图变化的效果（这个是给子视图设置的）
@property(nonatomic) UIViewAutoresizing autoresizingMask;
UIView【基础动画效果】，三种实现方式
【一】
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:0.5];
//do something
[UIView commitAnimations];
【二】
[UIView animateWithDuration:0.5 animations:^{
//do something
}];
【三】
[UIView animateWithDuration:0.5 animations:^{
//do something
} completion:^(BOOL finished){
//动画完成后执行
}];
【UIImageView】图片视图类
除了用allco initWithFrame的方式创建，还可以用图片直接初始化，如果用图片直接初始化，记得设frame
//图片
@property(nonatomic,retain) UIImage *image;
//动画的图片数组
@property(nonatomic,copy) NSArray *animationImages;
//动画时间(也就是一次完整的动画需要的时间)
@property(nonatomic) NSTimeInterval animationDuration;
//动画循环次数，循环完以后会自动停止
@property(nonatomic) NSInteger animationRepeatCount;
//开始动画
- (void)startAnimating;
//手动结束动画
- (void)stopAnimating;
//判断动画状态
- (BOOL)isAnimating;
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
UIView *bigView = [[UIView alloc] initWithFrame:CGRectMake(10, 30, 300, 300)];
bigView.backgroundColor = [UIColor redColor];
[self.view addSubview:bigView];
NSArray *colorArr = [NSArray arrayWithObjects:[UIColor orangeColor], [UIColor yellowColor], [UIColor greenColor], nil];
for (int i = 0; i<3; i++) {
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(i*30+10, i*30+10, 120, 120)];
view.backgroundColor = [colorArr objectAtIndex:i];
[bigView addSubview:view];
}
//查询某一个view所有的子view
NSArray *subArr = [bigView subviews];
//通过序号查询某一个子view，声明一个指针指向他
UIView *midView = [subArr objectAtIndex:1];
midView.backgroundColor = [UIColor blackColor];
#pragma mark - 插入
UIView *insertView = [[UIView alloc] initWithFrame:CGRectMake(30, 30, 120, 120)];
insertView.backgroundColor = [UIColor cyanColor];
//在固定的层级插入一个视图（如果越界，结果和addSubView一样）
// [bigView insertSubview:insertView atIndex:100];
//在某一个子view的上面插入
// [bigView insertSubview:insertView aboveSubview:midView];
//在某一个子视图的下面插入
[bigView insertSubview:insertView belowSubview:midView];
#pragma mark - 删除
//自杀
[insertView removeFromSuperview];
#pragma mark - 改
//通过层级找到对应的2个视图，然后交换这2个视图的层级
// [bigView exchangeSubviewAtIndex:1 withSubviewAtIndex:2];
//将一个子视图放到最下面
[bigView sendSubviewToBack:midView];
//将一个子视图带到最上面
[bigView bringSubviewToFront:midView];
//延迟调用
[self performSelector:@selector(qqq:) withObject:midView afterDelay:3];
}
- (void)qqq:(UIView *)view
{
//找到某个view的父视图
UIView *sView = [view superview];
[sView removeFromSuperview];
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
UIView *bigView = [[UIView alloc] initWithFrame:CGRectMake(10, 30, 100, 150)];
bigView.backgroundColor = [UIColor redColor];
bigView.tag = 1;
[self.view addSubview:bigView];
UIView *smallView = [[UIView alloc] initWithFrame:CGRectMake(10, 10, 50, 50)];
smallView.backgroundColor = [UIColor blueColor];
[bigView addSubview:smallView];
//允许子视图跟随
bigView.autoresizesSubviews = YES;
//设置子视图的跟随模式
smallView.autoresizingMask = UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleWidth;
//获取屏幕高度
CGFloat height = [UIScreen mainScreen].bounds.size.height;
//这种格式的btn自带大小和图片
UIButton *btn = [UIButton buttonWithType:UIButtonTypeInfoLight];
//自带大小，所以直接设置中心点坐标就可以
btn.center = CGPointMake(160, height-20-11);
[btn addTarget:self action:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btn];
//将一个rect转化成字符串
NSLog(@"%@",NSStringFromCGRect(btn.frame));
UIButton *bBtn = [UIButton buttonWithType:UIButtonTypeContactAdd];
bBtn.center = CGPointMake(200, height-20-11);
[bBtn addTarget:self action:@selector(bBtnClick) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:bBtn];
}
- (void)bBtnClick
{
UIView *bigView = [self.view viewWithTag:1];
[UIView animateWithDuration:2 animations:^{
bigView.alpha = 0;
} completion:^(BOOL finished) {
NSLog(@"动画结束以后回调");
bigView.alpha = 1;
}];
NSLog(@"透明度动画开始");
}
- (void)btnClick:(UIButton *)sender
{
sender.selected = !sender.selected;
UIView *bigView = [self.view viewWithTag:1];
CGRect frame = bigView.frame;
if (sender.selected) {
frame.size.width *= 2;
frame.size.height *= 2;
//开启简单动画
[UIView beginAnimations:nil context:NULL];
//设置动画时间
[UIView setAnimationDuration:2];
bigView.frame = frame;
bigView.backgroundColor = [UIColor colorWithRed:arc4random_uniform(256)/255.0f green:arc4random_uniform(256)/255.0f blue:arc4random_uniform(256)/255.0f alpha:1];
//提交动画
[UIView commitAnimations];
} else {
frame.size.width /= 2;
frame.size.height /= 2;
//实现动画的简写方式
[UIView animateWithDuration:2 animations:^{
bigView.frame = frame;
bigView.backgroundColor = [UIColor colorWithRed:arc4random_uniform(256)/255.0f green:arc4random_uniform(256)/255.0f blue:arc4random_uniform(256)/255.0f alpha:1];
}];
}
NSLog(@"改变大小");
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
self.view.backgroundColor = [UIColor grayColor];
//创建一个图片视图
UIImageView *iv = [[UIImageView alloc] initWithFrame:CGRectMake(30, 60, 150, 300)];
//设置需要展示的图片
iv.image = [UIImage imageNamed:@"aa"];
//如果运行这个程序设备支持Retina，会优先查找aa@2x.png
//如果找不到，再去查找aa.png
//如果设备不支持Retina，直接查找aa.png
iv.backgroundColor = [UIColor redColor];
[self.view addSubview:iv];
//使用一个图片初始化图片视图
UIImageView *aiv = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"bb"]];
//设置frame，宽和高通过图片获取
aiv.frame = CGRectMake(180, 100, aiv.image.size.width, aiv.image.size.height);
[self.view addSubview:aiv];
NSLog(@"%@",NSStringFromCGRect(aiv.frame));
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.view.backgroundColor = [UIColor yellowColor];
UIImageView *iv = [[UIImageView alloc] initWithFrame:self.view.bounds];
iv.image = [UIImage imageNamed:@"cat_angry0000.jpg"];
[self.view addSubview:iv];
NSMutableArray *imageArr = [NSMutableArray array];
for (int i = 0; i<26; i++) {
UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:@"cat_angry%04d.jpg",i]];
[imageArr addObject:image];
}
//设置iv的动画数组、单次循环的时间、循环次数
iv.animationImages = imageArr;
iv.animationDuration = imageArr.count/10;
iv.animationRepeatCount = 3;
iv.tag = 1;
//允许用户交互（可以接收点击事件），iv默认是不接收的
iv.userInteractionEnabled = YES;
UIButton *btn = [[UIButton alloc] initWithFrame:self.view.bounds];
[btn addTarget:self action:@selector(btnClick) forControlEvents:UIControlEventTouchUpInside];
[iv addSubview:btn];
}
- (void)btnClick
{
UIImageView *iv = (UIImageView *)[self.view viewWithTag:1];
if ([iv isAnimating]) {
//如果iv正在播放动画，那么让他就停止
[iv stopAnimating];
return;
}
//开始动画
[iv startAnimating];
}
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- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
NSArray *numArr=[NSArray arrayWithObjects:@"1",@"2", @"3", @"4", @"5", @"6", @"7", @"8", @"9", @"10", @"11", @"12", @"13",@"14", nil];
for (int i=0; i<14; i++) {
UIButton *btn=[[UIButton alloc]initWithFrame:CGRectMake(0, i*30+30, 30, 30)];
[btn setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
[btn setTitle:[numArr objectAtIndex:i] forState:UIControlStateNormal];
btn.titleLabel.font=[UIFont boldSystemFontOfSize:20];
[self.view addSubview:btn];
}
for (int i=0; i<14; i++) {
UIView *lView=[[UIView alloc]initWithFrame:CGRectMake(30, i*30+30, arc4random_uniform(290), 20)];
lView.backgroundColor=[UIColor blueColor];
[self.view addSubview:lView];
lView.tag=i+1;
}
CGFloat heigth=[UIScreen mainScreen].bounds.size.height;
CGFloat width=[UIScreen mainScreen].bounds.size.width;
UIButton *btn1=[UIButton buttonWithType:UIButtonTypeSystem];
btn1.frame=CGRectMake(width/2-20, heigth-20-50, 40, 20);
[btn1 setTitle:@"NEXT" forState:UIControlStateNormal];
[btn1 addTarget:self action:@selector(aClick) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btn1];
}
-(void)aClick
{
NSArray *arr = [self.view subviews];
for (int i=0; i<[arr count]; i++) {
UIView *subview = [arr objectAtIndex:i];
if (subview.tag>0&&subview.tag<15) {
CGRect frame = subview.frame;
frame.size.width = arc4random_uniform(290);
subview.backgroundColor= [UIColor colorWithRed:arc4random_uniform(256)/255.0f green:arc4random_uniform(256)/255.0f blue:arc4random_uniform(256)/255.0f alpha:1];
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.5];
subview.frame = frame;
[UIView commitAnimations];
}
}
}