我有一個UIViewController，稱爲OoviumController，它響應設備旋轉。 OoviumController是我的應用程序的UIWindow rootViewController。 UIWindow也是它自己的看法。 OoviumController的視圖是透明的，並且位於不應該旋轉的UIWindow視圖的頂部。如何防止自動旋轉UIWindow視圖
從iOS 2到iOS 7，這一切工作正常。但是，我正在嘗試使用iOS 8的XCode 6構建我的項目，並且我注意到現在除了OoviumController的視圖之外，UIWindow視圖也在旋轉，這會在我的應用程序中造成嚴重問題。
如何將功能返回至以前的工作方式？如何防止UIWindow與我的rootViewController視圖一起旋轉？
我也注意到，UIWindow文檔不再將其列爲繼承UIView，即使addSubview似乎仍然有效。這是一個文檔錯誤還是UIView的公共繼承被棄用？
我還沒有找到這個問題的快速，簡單或優雅的解決方案。然而，我發現了一個單調乏味的暴力解決方案。我在這個月前工作過，實際上並不認爲我完全完成了。但是，我將爲感興趣的任何人發佈基本框架工作。
基本概念是創建兩個UIWindow對象，一個旋轉，另一個不旋轉。然後在旋轉開始之前將所有控件從旋轉窗口翻轉到非旋轉窗口。旋轉完成後將它們翻轉回去：
- (void) hideHovers {
for (Hover* hover in self.hovers)
hover.alpha = 0;
}
- (void) showHovers {
for (Hover* hover in self.hovers)
hover.alpha = 1;
}
// Public ==========================================================================================
- (void) addHover:(Hover*)hover {
[[Oovium aetherWindow] addSubview:hover];
[self.hovers addObject:hover];
}
- (void) beforeRotation {
UIInterfaceOrientation orientation = [UIApplication sharedApplication].statusBarOrientation;
for (Hover* hover in self.hovers) {
hover.orientation = orientation;
[hover removeFromSuperview];
[controlWindow_ addSubview:hover];
}
controlWindow_.hidden = NO;
[self showHovers];
[UIView animateWithDuration:0.5 animations:^{
[self hideHovers];
}];
}
- (void) afterRotation {
for (Hover* hover in self.hovers) {
hover.transform = CGAffineTransformIdentity;
[hover removeFromSuperview];
[[Oovium aetherWindow] addSubview:hover];
[hover place];
}
controlWindow_.hidden = YES;
[UIView animateWithDuration:0.5 animations:^{
[self showHovers];
}];
}
其實，這是很容易的部分。困難的部分是處理控制的轉換。下面的代碼並不完全適用於所有旋轉。我會在完成之後對其進行修改，但我不確定何時能夠恢復。
//
// Hover.m
// Oovium
//
// Created by Joe Charlier on 2/22/15.
// Copyright (c) 2015 Aepryus Software. All rights reserved.
//
#import "Controls.h"
#import "Hover.h"
#import "Oovium.h"
#import "Utility.h"
@interface Hover()
@property (nonatomic) OOAnchor anchor;
@property (nonatomic) CGPoint offset;
@property (nonatomic) CGSize size;
@end
@implementation Hover
// Static ==========================================================================================
static CGPoint points_[5][5];
static CGPoint shift_[5];
+ (void) initialize {
CGFloat width = [Utility deviceBounds].size.width;
CGFloat height = [Utility deviceBounds].size.height;
CGPoint topLeft = CGPointMake(0,0);
CGPoint topRight = CGPointMake(width,0);
CGPoint bottomLeft = CGPointMake(0,height);
CGPoint bottomRight = CGPointMake(width,height);
CGPoint center = CGPointMake(width/2,height/2);
points_[UIInterfaceOrientationPortrait][OOAnchorTopLeft] = topLeft;
points_[UIInterfaceOrientationPortrait][OOAnchorTopRight] = topRight;
points_[UIInterfaceOrientationPortrait][OOAnchorBottomLeft] = bottomLeft;
points_[UIInterfaceOrientationPortrait][OOAnchorBottomRight] = bottomRight;
points_[UIInterfaceOrientationPortrait][OOAnchorCenter] = center;
points_[UIInterfaceOrientationLandscapeRight][OOAnchorTopLeft] = topRight;
points_[UIInterfaceOrientationLandscapeRight][OOAnchorTopRight] = bottomRight;
points_[UIInterfaceOrientationLandscapeRight][OOAnchorBottomLeft] = topLeft;
points_[UIInterfaceOrientationLandscapeRight][OOAnchorBottomRight] = bottomLeft;
points_[UIInterfaceOrientationLandscapeRight][OOAnchorCenter] = center;
points_[UIInterfaceOrientationPortraitUpsideDown][OOAnchorTopLeft] = bottomRight;
points_[UIInterfaceOrientationPortraitUpsideDown][OOAnchorTopRight] = bottomLeft;
points_[UIInterfaceOrientationPortraitUpsideDown][OOAnchorBottomLeft] = topRight;
points_[UIInterfaceOrientationPortraitUpsideDown][OOAnchorBottomRight] = topLeft;
points_[UIInterfaceOrientationPortraitUpsideDown][OOAnchorCenter] = center;
points_[UIInterfaceOrientationLandscapeLeft][OOAnchorTopLeft] = bottomLeft;
points_[UIInterfaceOrientationLandscapeLeft][OOAnchorTopRight] = topLeft;
points_[UIInterfaceOrientationLandscapeLeft][OOAnchorBottomLeft] = bottomRight;
points_[UIInterfaceOrientationLandscapeLeft][OOAnchorBottomRight] = topRight;
points_[UIInterfaceOrientationLandscapeLeft][OOAnchorCenter] = center;
shift_[OOAnchorTopLeft] = CGPointMake(0, 0);
shift_[OOAnchorTopRight] = CGPointMake(1, 0);
shift_[OOAnchorBottomLeft] = CGPointMake(0, 1);
shift_[OOAnchorBottomRight] = CGPointMake(1, 1);
shift_[OOAnchorCenter] = CGPointMake(0.5, 0.5);
}
// =================================================================================================
+ (CGRect) placeInRect:(CGRect)rect anchor:(OOAnchor)anchor offset:(CGPoint)offset size:(CGSize)size {
CGPoint shift = shift_[anchor];
CGFloat x = shift.x*(rect.size.width-size.width)+offset.x;
CGFloat y = shift.y*(rect.size.height-size.height)+offset.y;
return CGRectMake(x, y, size.width, size.height);
}
- (id) initWithAnchor:(OOAnchor)anchor offset:(CGPoint)offset size:(CGSize)size {
if (self = [super initWithFrame:[Hover placeInRect:[UIScreen mainScreen].bounds anchor:anchor offset:offset size:size]]) {
self.anchor = anchor;
self.offset = offset;
self.size = size;
self.backgroundColor = [UIColor purpleColor];
}
return self;
}
- (void) setOrientation:(UIInterfaceOrientation)orientation {
_orientation = orientation;
CGPoint aO = self.frame.origin;
CGPoint aN = points_[orientation][_anchor];
double w = self.size.width;
double h = self.size.height;
double q = (self.size.height-self.size.width)/2;
double ox = self.offset.x;
double oy = self.offset.y;
double ax = aN.x-aO.x;
double ay = aN.y-aO.y;
double dx=0;
double dy=0;
if (orientation == UIInterfaceOrientationLandscapeLeft || orientation == UIInterfaceOrientationLandscapeRight) {
dx += q;
dy += q;
}
switch (orientation) {
case UIInterfaceOrientationPortrait:
dx = 0;
dy = 0;
break;
case UIInterfaceOrientationPortraitUpsideDown:
switch (_anchor) {
case OOAnchorTopLeft:
dx += -ax+w+ox;
dy += -ay+h+oy;
break;
case OOAnchorTopRight:
dx += -ax+ox;
dy += -ay+h+oy;
break;
case OOAnchorBottomLeft:
dx += -ax+w+ox;
dy += -ay+oy;
break;
case OOAnchorBottomRight:
dx += -ax+ox;
dy += -ay+oy;
break;
}
break;
case UIInterfaceOrientationLandscapeRight:
switch (_anchor) {
case OOAnchorTopLeft:
dx += 0;
dy += ax-h-ox;
break;
case OOAnchorTopRight:
dx += -ay+w+oy;
dy += ax-h+ox;
break;
case OOAnchorBottomLeft:
dx += -ay+oy;
dy += 0;
break;
case OOAnchorBottomRight:
dx += -ay+w-oy;
dy += ax-ox;
break;
}
break;
case UIInterfaceOrientationLandscapeLeft:
switch (_anchor) {
case OOAnchorTopLeft:
dx += ay-h-oy;
dy += -w;
break;
case OOAnchorTopRight:
dx += -w;
dy += -ax-w-ox;
break;
case OOAnchorBottomLeft:
dx += ay-h+oy;
dy += -ay-h;
break;
case OOAnchorBottomRight:
dx += ay-w-oy;
dy += -ax+w-ox;
break;
}
break;
}
CGFloat angle = 0;
switch (orientation) {
case UIInterfaceOrientationPortrait: angle = 0; break;
case UIInterfaceOrientationLandscapeRight: angle = M_PI_2*3; break;
case UIInterfaceOrientationPortraitUpsideDown: angle = M_PI; break;
case UIInterfaceOrientationLandscapeLeft: angle = M_PI_2; break;
case UIInterfaceOrientationUnknown:break;
}
[self setTransform:CGAffineTransformConcat(
CGAffineTransformMakeTranslation(dx,dy),
CGAffineTransformMakeRotation(angle)
)];
}
- (void) invoke {
[[Oovium controls] invoke:self];
}
- (void) place {
CGSize sz = [UIScreen mainScreen].bounds.size;
CGPoint shift = shift_[self.anchor];
CGFloat x = shift.x*(sz.width-self.size.width)+self.offset.x;
CGFloat y = shift.y*(sz.height-self.size.height)+self.offset.y;
self.frame = CGRectMake(x, y, self.size.width, self.size.height);
}
@end
你知道如何做到這一點嗎？ – 2015-07-27 17:20:35
@theReverend不幸的是，我沒有找到一個簡單的方法來做到這一點。然而，我創建了一個蠻力機制來處理這個問題，方法是在頂部創建第二個UIWindow並在旋轉過程中將控件翻轉到該窗口，然後在旋轉完成時向後翻轉。我對atm時間有點緊張，但我會盡量在今晚晚些時候回答基礎知識。 – aepryus 2015-07-27 18:22:13
@theReverend對不起，我忘記了你。我剛剛發佈了幾個月前的一些代碼。在測試中，我注意到我沒有完全完成我正在做的事情，還有一些怪癖。 – aepryus 2015-08-03 22:16:32