Question

我有一个应用程序，你点击UIImageView，按钮淡出并重新进入。状态栏的功能相同，只是它快速进入。有没有办法计算其淡入时间以匹配我的按钮时间？这是我的.m文件，其中包含按钮和状态栏的代码。

的.m

- (void)viewDidLoad
{
////Loads UIImageView from URL
todaysWallpaper.image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://www.inkdryercreative.com/daily/archive/mondays/images/062-mondays-960x640-A.jpg"]]]; 

_buttonsVisible = false;

[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.

  UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc]    initWithTarget:self action:@selector(imageTapped:)];
  [todaysWallpaper addGestureRecognizer:tapGesture];
}

- (void)viewWillAppear:(BOOL)animated 
{
[super viewWillAppear:animated];

[[UIApplication sharedApplication] setStatusBarHidden:YES];
}

- (void)imageTapped:(UIGestureRecognizer *)sender {
float targetA = 0;
if(_buttonsVisible == NO) {
 targetA =1.0;
 } else {
[NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(imageTapped:)  object:nil];
  [[UIApplication sharedApplication] setStatusBarHidden:YES];
  [[UIApplication sharedApplication]setStatusBarStyle:UIStatusBarStyleBlackTranslucent];
  [[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationFade];


}

[UIView beginAnimations:@"MoveAndStrech" context:nil];
[UIView setAnimationDuration:1];
[UIView setAnimationBeginsFromCurrentState:YES];
homeButton.alpha = targetA;
infoButton.alpha = targetA;
saveButton.alpha = targetA;
tweetButton.alpha = targetA;
[UIView commitAnimations];
_buttonsVisible = !_buttonsVisible;

if(_buttonsVisible) {
[self performSelector:@selector(imageTapped:) withObject:nil afterDelay:100.0];
  [[UIApplication sharedApplication] setStatusBarHidden:NO ];

  [[UIApplication sharedApplication]setStatusBarStyle:UIStatusBarStyleBlackTranslucent];
}
}

任何帮助或指导都将受到极大的赞赏。我的客户想要在星期二之前完成这项工作，或者找其他人来做这件事。我把我的生命投入到这个应用中，所以如果你能帮助分享知识，请。感谢

Answer 1

您可以将其包装在动画块中。只需使用setStatusBarHidden:方法而不是setStatusBarHidden:withAnimation:

[UIView beginAnimations:@"foo" context:nil];
[UIView setAnimationDuration:1.0];
[[UIApplication sharedApplication] setStatusBarHidden:YES];
[UIView commitAnimations];

Answer 2

您可以尝试这是所有iOS设备的单行代码：

[[UIApplication sharedApplication] setStatusBarHidden:YES 
                                        withAnimation:UIStatusBarAnimationFade];

希望有所帮助......

Answer 3

尝试使用以下代码设置状态栏：

[[UIApplication sharedApplication] setStatusBarHidden:YES 
                                        withAnimation:UIStatusBarAnimationFade];

Answer 4

你可以做的是创建你自己的NavigationBar（不要使用UINavigationController的UINavigationBar） - 然后你可以自定义它并轻松地为它分配动画属性，如alpha。

UI状态栏淡入淡出时间iOS

4 个答案: