- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
_window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
_window.backgroundColor = [UIColor whiteColor];
[_window makeKeyAndVisible];
//定义一个父视图
UIView *superView = [[UIView alloc] initWithFrame:CGRectMake(65, 65, 300, 300)];
[_window addSubview:superView];
_views = [[NSMutableArray alloc] init];
//循环创建七个子视图
for (int i = 0; i < 7; i ++) {
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(50, 50, 250, 250)];
//设置随机色
view.backgroundColor = [UIColor colorWithRed:arc4random()%10*.1 green:arc4random()%10*.1 blue:arc4random()%10*.1 alpha:1];
[_window addSubview:view];
UIView *lastView = [_views lastObject];
if (lastView != nil) {
view.transform = CGAffineTransformScale(lastView.transform, 0.8, 0.8);
}
[_views addObject:view];
}
//在界面上添加几个button，来实现不同的功能
UIButton *button1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button1 setTitle:@"旋转" forState:UIControlStateNormal];
button1.tag = 101;
button1.frame = CGRectMake(50, 320, 50, 30);
[button1 addTarget:self action:@selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
[_window addSubview:button1];
UIButton *button2 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button2 setTitle:@"放大" forState:UIControlStateNormal];
button2.tag = 102;
button2.frame = CGRectMake(150, 320, 50, 30);
[button2 addTarget:self action:@selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
[_window addSubview:button2];
UIButton *button3 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[button3 setTitle:@"缩小" forState:UIControlStateNormal];
button3.tag = 103;
button3.frame = CGRectMake(250, 320, 50, 30);
[button3 addTarget:self action:@selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
[_window addSubview:button3];
_index = 0;
return YES;
}
//button的点击事件
- (void)buttonAction:(UIButton *)button{
if (button.tag == 103) {
for (UIView *view in _views) {
view.transform = CGAffineTransformScale(view.transform, .5, .5);
}
}else if (button.tag == 102)
{
for (UIView *view in _views) {
view.transform = CGAffineTransformScale(view.transform, 2, 2);
}
}else{
//开启一个定时器
[NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(timeAction:) userInfo:nil repeats:YES];
}
}
//定时器
- (void)timeAction:(NSTimer *)time{
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:1.9];
for (UIView *view in _views) {
view.backgroundColor = [UIColor colorWithRed:arc4random()%10*.1 green:arc4random()%10*.1 blue:arc4random()%10*.1 alpha:1];
view.transform = CGAffineTransformRotate(view.transform, M_PI/10);
}
[UIView commitAnimations];
_index++;
if (_index == 10) {
for (UIView *view in _views) {
[view removeFromSuperview];
}
[time invalidate];
}
}
