旋转的UIView iPhone [英] Rotate UIView iPhone

问题描述

我工作的一个益智游戏，我需要的拼图，以 90 度角度旋转每个枪王。

I am working on a puzzle game and I need to rotate the puzzle pieces to 90 degrees angle on every double tap.

我试图做用两种不同的方式一样。第一种方法是这样的：

I have tried to do did using two different ways. First method is this one:

[UIView beginAnimations:@"rotate" context:nil];
[UIView setAnimationDuration:0.5];
self.transform = CGAffineTransformMakeRotation(90);
[UIView commitAnimations];

与唯一的问题是，一块不旋转 90 度;它是由各地的 100 度旋转，而这个动画修改拼图的UIView 的框架。

The only problems with that are that the piece is NOT rotating 90 degrees; it is rotating by around 100 degrees, and that this animation is modifying the frame of the puzzle piece UIView.

这是我的控制台输出：

frame BEFORE ROTATION: {{35, 178}, {80, 80}}

frame AFTER ROTATION: {{21.3172, 164.317}, {107.366, 107.366}}

我试过的第二种方法是这样的：

The second method I tried was this one:

CABasicAnimation* spinAnimation = [CABasicAnimation
                                       animationWithKeyPath:@"transform.rotation"];
spinAnimation.toValue = [NSNumber numberWithFloat:1];
[self.layer addAnimation:spinAnimation forKey:@"spinAnimation"];

这种方法的问题是，在完成旋转后，它被扭转我的的UIView 到previous状态。

The problem with this method is that after finishing the rotation, it is reversing my UIView to its previous state.

我如何可以旋转拼图与动画，而无需这些问题呢？

How can I rotate the puzzle piece with an animation without having these problems?

推荐答案

尝试

[UIView beginAnimations:@"rotate" context:nil];
[UIView setAnimationDuration:0.5];
self.transform = CGAffineTransformMakeRotation(DegreesToRadians(90));
[UIView commitAnimations];

在这里你可以定义为DegreesToRadians

where you can define DegreesToRadians as

#define DegreesToRadians(x) ((x) * M_PI / 180.0)

这篇关于旋转的UIView iPhone的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！