uicollectionview下单独使用uibutton然后setimage或者直接使用uiimageview然后一定角度旋转后发现size会变动
解决方案：添加uibutton到uicollectionvview然后添加uiimageview到uibutton上而后旋转没有问题
但是点击时候即便设置的uiimageview的相关可点击属性依然无法实现button的点击，解决途径：tapgesture判断
代码如下：
self.subThemeGobackBtn = [UIButton buttonWithType:UIButtonTypeCustom];
self.subThemeGobackBtn.frame = CGRectMake(self.collectionView.bounds.size.width / 2 + 60.0f, positionY, 0.0f, 0.0f);
[self.subThemeGobackBtn setBackgroundColor:[UIColor clearColor]];
// [self.subThemeGobackBtn addTarget:self action:@selector(gobackToPerviousScreen:) forControlEvents:UIControlEventTouchUpInside];
[self.collectionView addSubview:self.subThemeGobackBtn];
self.buttonImageView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"gobackicon.png"]];
self.buttonImageView.frame = CGRectMake(0.0f, 0.0f, 100.0f, 20.0f);
self.buttonImageView.alpha = 0.0f;
self.buttonImageView.tag = 0;
self.buttonImageView.backgroundColor = [UIColor blueColor];
self.buttonImageView.userInteractionEnabled = YES;
[self.subThemeGobackBtn addSubview:self.buttonImageView];
[UIView animateWithDuration:0.3f
delay:0.0f
options:UIViewAnimationOptionBeginFromCurrentState
animations:^ {
if (angle != 0.0f){
self.subThemeGobackBtn.frame = CGRectMake(positionX, positionY, 0.0f, 0.0f);
}else{
self.subThemeGobackBtn.frame = CGRectMake(positionX, positionY, 120.0f, 23.0f);
self.buttonImageView.alpha = 1.0f;
}
}completion:^(BOOL finished){
if (angle != 0.0f) {
[UIView animateWithDuration:0.0f
delay:0.0f
options:UIViewAnimationOptionBeginFromCurrentState
animations:^ {
self.subThemeGobackBtn.transform = CGAffineTransformMakeRotation(angle + M_PI);
// Commit the changes
[UIView commitAnimations];
}completion:^(BOOL finished){
CGFloat positiony = self.centercell.frame.origin.y;
CGFloat positionx = self.centercell.frame.origin.x;
if (self.centercell.frame.origin.y > self.collectionView.bounds.size.height / 2) {
positiony = self.collectionView.bounds.size.height / 2 - (self.centercell.frame.origin.y - self.collectionView.bounds.size.height / 2 ) - 65.0f ;
}else{
positiony = self.collectionView.bounds.size.height / 2 + (self.collectionView.bounds.size.height / 2 -self.centercell.frame.origin.y) - 65.0f;
}
if (self.centercell.frame.origin.x > self.collectionView.bounds.size.width / 2) {
positionx = self.collectionView.bounds.size.width - 130.0f;
}else{
positionx = 20.0f;
if ((4 < -angle ) && (-angle < 5))
{
positionx = self.collectionView.bounds.size.width / 2;
positiony = self.collectionView.bounds.size.height / 2 - (self.centercell.frame.origin.y - self.collectionView.bounds.size.height / 2 ) - 70.0f ;
}
}
[UIView animateWithDuration:0.0f
delay:0.0f
options:UIViewAnimationOptionBeginFromCurrentState
animations:^ {
self.buttonImageView.alpha = 1.0f;
self.subThemeGobackBtn.frame = CGRectMake(positionx, positiony, 0.0f, 0.0f);
}completion:^(BOOL finished){
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.25f];
self.subThemeGobackBtn.frame = CGRectMake(positionx, positiony, 120.0f, 23.0f);
[UIView commitAnimations];
}];
}];
}
}];
}