项目介绍:首先上边显示的是透明的视图,透明度为0.8
这是一个vc 设置vc的view的背景颜色为clearcolor 上边是一个按钮,设置按钮的透明度为0.8 背景为黑色
下边是一个btn 用来做点击事件。
代码附上:
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor yellowColor];
UIButton *btn = [[UIButton alloc]initWithFrame:CGRectMake(100, 100, 100, 100)];
[btn setTitle:@"点击打开透明页" forState:UIControlStateNormal];
btn.backgroundColor = [UIColor redColor];
[btn addTarget:self action:@selector(btnClicked:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btn];
}
-(void)btnClicked:(UIButton*)sender{
NSLog(@"你点击了btn");
//nextvc
UIViewController *nextVC = [[UIViewController alloc]init];
nextVC.view.backgroundColor = [UIColor clearColor];
//设置上边的半透明的背景view
UIButton *bgBtn = [[UIButton alloc]initWithFrame:CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, 300)];
bgBtn.backgroundColor = [UIColor blackColor];
//设置形态的方式
if([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0){
nextVC.modalPresentationStyle = UIModalPresentationOverCurrentContext;
}else{
nextVC.modalPresentationStyle = UIModalPresentationCurrentContext;
}
bgBtn.alpha = 0.8;
//天机点击事件 用来验证可点击
[bgBtn addTarget:self action:@selector(btnClicked2:) forControlEvents:UIControlEventTouchUpInside];
[nextVC.view addSubview:bgBtn];
//分享的按钮的设置
UIButton *shareBtn = [[UIButton alloc]initWithFrame:CGRectMake(50, 350, 50, 50)];
[nextVC.view addSubview:shareBtn];
shareBtn.backgroundColor = [UIColor purpleColor];
[shareBtn setTitle:@"tittle1" forState:UIControlStateNormal];
[shareBtn addTarget:self action:@selector(tittleClicked:) forControlEvents:UIControlEventTouchUpInside];
[self presentViewController:nextVC animated:YES completion:nil];
}
-(void)tittleClicked:(UIButton *)sender
{
NSLog(@"你点击了第一个tittle");
}
-(void)btnClicked2:(UIButton*)sender
{
NSLog(@"点击的是next的bgBtn");
}