iPhone 4 在呈现视图时播放动画

发布于 2024-12-08 23:51:34 字数 1406 浏览 0 评论 0原文

我想将按钮放置在我的视图中围绕固定点的圆圈中。我可以这样做：

 button.layer.anchorPoint = CGPointMake(offsetX/button.frame.size.width, offsetY/button.frame.size.height);

button.transform = [self calculateLabelPositionFromFixedPointWithOffsetClockwiseInDegrees:commonAngleRatio*startSpacing*spacingRatio++];

其中calculateLabelPositionFromFixedPointWithOffsetClockwiseInDegrees:angleInDegrees是我编写的一个函数，用于给我CGAfflineTransformMakeRotation。

我希望按钮在呈现视图时以动画方式“轨道”到正确的位置。我尝试放置一个计时器，将动画调用到“viewWillAppear”中，但它似乎不起作用。

编辑：我对 UIViewController 进行了两次子类化：

@interface HomeScreenAbstractParentController : UIViewController<UITableViewDelegate, UITableViewDataSource, UIGestureRecognizerDelegate, ContextActionDelegate, RemoteControlDelegate> {...}

并且

@interface AnimatedController : HomeScreenAbstractParentController
{}

在 AnimatedController 中，不会调用以下方法。我将 AnimatedController 的视图添加到 homeScreenController 的背面（如天气应用程序中），当用户按下按钮时，视图会翻转到其背面。完成此操作后，背面应该为控件设置动画。

-(void)viewWillAppear:(BOOL)animated

{
    NSLog(@"viewWillAppear");
    [super viewWillAppear:animated];

}


-(void)viewDidAppear:(BOOL)animated
{ 
    NSLog(@"viewDidAppear");
    [super viewDidAppear:animated];
    [self animateControls:nil];


}

在上述应用程序生命周期的哪个时刻，我应该安排计时器将按钮动画化到相应位置？是我翻转视图的时候吗？

原文

I want to position buttons within my view in a circle around a fixed point. I can do this with :

 button.layer.anchorPoint = CGPointMake(offsetX/button.frame.size.width, offsetY/button.frame.size.height);

button.transform = [self calculateLabelPositionFromFixedPointWithOffsetClockwiseInDegrees:commonAngleRatio*startSpacing*spacingRatio++];

Where the calculateLabelPositionFromFixedPointWithOffsetClockwiseInDegrees:angleInDegrees is a function that I wrote to give me CGAfflineTransformMakeRotation .

I would like the buttons to animate "orbiting" into the correct position when the view is presented. I tried putting a timer that will call animation into "viewWillAppear", but it doesn't seem to work.

Edit: I'm subclassing a UIViewController twice:

@interface HomeScreenAbstractParentController : UIViewController<UITableViewDelegate, UITableViewDataSource, UIGestureRecognizerDelegate, ContextActionDelegate, RemoteControlDelegate> {...}

and

@interface AnimatedController : HomeScreenAbstractParentController
{}

Within the AnimatedController the following methods do not get called. I have the AnimatedController's view added to the back of the homeScreenController (as in Weather app), and when a user presses a button, the view flips to it's backside. The backside should animate controls when this is done.

-(void)viewWillAppear:(BOOL)animated

{
    NSLog(@"viewWillAppear");
    [super viewWillAppear:animated];

}


-(void)viewDidAppear:(BOOL)animated
{ 
    NSLog(@"viewDidAppear");
    [super viewDidAppear:animated];
    [self animateControls:nil];


}

At which point in the lifecycle of the app above would I schedule the timer to animate buttons into positions? Is it when I flip the view over?

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蓝礼 2024-12-15 23:51:34

在你的 viewController 中：

-(void)viewDidAppear {

[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1]; //amount of seconds animation should run
button.transform = [self calculateLabelPositionFromFixedPointWithOffsetClockwiseInDegrees:commonAngleRatio*startSpacing*spacingRatio++];
[UIView commitAnimations];


}

in your viewController :

-(void)viewDidAppear {

[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1]; //amount of seconds animation should run
button.transform = [self calculateLabelPositionFromFixedPointWithOffsetClockwiseInDegrees:commonAngleRatio*startSpacing*spacingRatio++];
[UIView commitAnimations];


}

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