我正在尝试在旋转设备时调整UIView中的对象,而不对硬编码宽度和高度进行硬编码。在此代码中,我如何获得newWidth
和newHeight
?
- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
child.frame = CGRectMake(10, 10, newWidth - 20, newHeight - 20);
}
答案 0 :(得分:10)
这是正确的。
- (void)willAnimateRotationToInterfaceOrientation:
(UIInterfaceOrientation)toInterfaceOrientation
duration:(NSTimeInterval)duration
{
// we grab the screen frame first off; these are always
// in portrait mode
CGRect bounds = [[UIScreen mainScreen] applicationFrame];
CGSize size = bounds.size;
// let's figure out if width/height must be swapped
if (UIInterfaceOrientationIsLandscape(toInterfaceOrientation)) {
// we're going to landscape, which means we gotta swap them
size.width = bounds.size.height;
size.height = bounds.size.width;
}
// size is now the width and height that we will have after the rotation
NSLog(@"size: w:%f h:%f", size.width, size.height);
}
答案 1 :(得分:1)
如果可能,你也会更好:
UIView
进行子类化并在-(void)layoutSubviews
内进行所需的布局,或者autoresizingMask
自动布置视图。答案 2 :(得分:0)
最好完全创建一个单独的视图,并在did rotate方法中调用该视图。
答案 3 :(得分:0)
您可以从界面构建器设置视图的自动调整大小属性。这将在旋转发生时调整视图大小。但是可能存在某些观点可能不合适的问题。