CGAffineTransformMakeScale這個方法咱們之前常用,可是在IOS8上出現問題了ios
[UIView animateWithDuration:0.3 animations:^{xcode
bgView.frame=CGRectMake(0,0-(y/2), WIDTH, HEIGHT);code
logoImageView.transform=CGAffineTransformMakeScale(0, 0);orm
}];animation
ios8上面若是是0的話,則會產生忽然消失的狀況,須要修改代碼爲0.1才能夠,正確代碼以下 :it
[UIView animateWithDuration:0.3 animations:^{io
bgView.frame=CGRectMake(0,0-(y/2), WIDTH, HEIGHT);form
logoImageView.transform=CGAffineTransformMakeScale(0.1, 0.1);transform
//xcode6上面須要改成0.1纔有效果,0則忽然消失ios8
}];