我正在 ipad 上开发一个应用程序来阅读和注释 pdf。我的应用程序在纵向/横向模式下工作正常，但是当我旋转设备或模拟器时，它给了我奇怪的错误 wait_fences: failed to receive reply: 10004003 每当我从横向旋转到纵向或从纵向旋转到横向时。
有时我的应用程序崩溃，有时由于此错误而无法正常旋转。 我在 Google 上搜索了 wait_fences，但没有得到任何信息。
谁能帮我解决这个问题。 提前致谢。
【问题讨论】：
willAnimateRotationToInterfaceOrientation:发布您的代码
标签： iphone ipad iphone-sdk-3.0 uiinterfaceorientation
这里你在方法 willAnimateRotationToInterfaceOrientation 中做以下事情。
if([objGoToPagePopOverController isPopoverVisible])
{
[objGoToPagePopOverController dismissPopoverAnimated:YES];
}
所以，这里不是直接调用这个“dismissPopoverAnimated”方法，而是创建一个自定义方法“Remove_Popover”并在计时器中调用它，如下所示：
[NSTimer scheduledTimerWithTimeInterval:0.001 target:self selector:@selector(Remove_Popover) userInfo:nil repeats:NO];
当你将dismissPopoverAnimated 代码放在willAnimateRotationToInterfaceOrientation 方法中时，在NSTimer 中调用此方法。只需按如下方式制作自己的自定义方法：
- (void)Remove_Popover
{
if([objGoToPagePopOverController isPopoverVisible])
{
[objGoToPagePopOverController dismissPopoverAnimated:YES];
}
}
如果你能解决问题，请告诉我。
【讨论】：
withih willRotateToInterfaceOrientation 我正在调用我的神话，我正在为我的所有 UI 元素设置横向和纵向矩形
-(void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
delegate.currentOrientation = toInterfaceOrientation;
[self landscapePortraitOrientation];
}
- (void) landscapePortraitOrientation
{
CGRect scriptPageViewRect = delegate.objNewWindow.frame;
scriptPageViewRect.origin.x = 0.0;
scriptPageViewRect.origin.y = 0.0;
if((delegate.currentOrientation == UIInterfaceOrientationLandscapeLeft )|| (delegate.currentOrientation == UIInterfaceOrientationLandscapeRight))
{
searchMenus.frame = CGRectMake(824, 634, 400, 55);
currPage.frame = CGRectMake( 0.0, 0.0, 1004.0, 768.0); //( 0.0, 0.0, 798.0, 1024.0); //( 138.0, -140.0, 768.0, 1004.0)
tiledLayerSize = tiledLayerSizeLandscape;
// Customising go to page slider
CGAffineTransform trans = CGAffineTransformMakeRotation (M_PI * 0.5);
goToPageSlider.transform = trans;
goToPageSlider.minimumValue = 1;
goToPageSlider.maximumValue = totalNoOfScriptPages;
goToPageSlider.frame = CGRectMake(15.0,90.0, 50.0, 550.0);
CGRect frame4=backButtonOutlet.frame;
frame4.origin.x=8;
frame4.origin.y=4;
frame4.size.width=69;
frame4.size.height=35;
backButtonOutlet.frame=frame4;
CGRect frame5=pdfPageTopBar.frame;
frame5.origin.x = 0;
frame5.origin.y = 0;
frame5.size.width = 1024;
frame5.size.height = 44;
pdfPageTopBar.frame = frame5;
CGRect frame6=pdfTitleOutlet.frame;
frame6.origin.x=319;
pdfTitleOutlet.frame=frame6;
CGRect frame7=helpButtonOutlet.frame;
frame7.origin.x=928;
frame7.origin.y=3;
frame7.size.width = 76;
frame7.size.height = 36;
helpButtonOutlet.frame=frame7;
CGRect frame9=modeSwitchBtnImage.frame;
frame9.origin.x=818;
modeSwitchBtnImage.frame=frame9;
CGRect frame10=pdfPageBottomBar.frame;
frame10.origin.x = -3;
frame10.origin.y = 675;
frame10.size.width = 1028;
frame10.size.height = 74;
pdfPageBottomBar.frame=frame10;
CGRect frame13=gotoPageButtonOutlet.frame;
frame13.origin.x = 504;
frame13.origin.y = 675;
gotoPageButtonOutlet.frame = frame13;
CGRect frame17=searchButtonOutlet.frame;
frame17.origin.x=314;
frame17.origin.y=675;
searchButtonOutlet.frame=frame17;
CGRect frame18=viewAllCommentsButtonOutlet.frame;
frame18.origin.x=696;
frame18.origin.y=675;
viewAllCommentsButtonOutlet.frame=frame18;
CGRect frame19=commentsButtonOutlet.frame;
frame19.origin.x=125;
frame19.origin.y=675;
commentsButtonOutlet.frame=frame19;
CGRect frame14=modeSwitchBtnOutlet.frame;
frame14.origin.x=818;
modeSwitchBtnOutlet.frame=frame14;
CGRect frameDoneBtn = commentDoneButtonOutlet.frame;
frameDoneBtn.origin.x = 835;
commentDoneButtonOutlet.frame = frameDoneBtn;
if([objGoToPagePopOverController isPopoverVisible])
{
[objGoToPagePopOverController dismissPopoverAnimated:YES];
}
//for comments
if(commentsView.hidden == NO && isKeyBoardShown == YES)
{CGRect commentsViewFrame = CGRectMake(0,200,1024,205);
commentsView.frame = commentsViewFrame;
CGRect pageTextCommentsFrame = pageTextComments.frame;
pageTextCommentsFrame.origin.x = 20;
pageTextCommentsFrame.size.width = 986;
pageTextCommentsFrame.size.height = 120;
pageTextComments.frame = pageTextCommentsFrame;
}
else if(commentsView.hidden == NO && isKeyBoardShown == NO)
{
CGRect commentsViewFrame = CGRectMake(0,380,1024,300);
commentsView.frame = commentsViewFrame;
CGRect pageTextCommentsFrame = pageTextComments.frame;
pageTextCommentsFrame.origin.x = 20;
pageTextCommentsFrame.size.width = 980;
pageTextCommentsFrame.size.height = 220;
pageTextComments.frame = pageTextCommentsFrame;
}
// Initialising top & bottm bar elements show rect
topBarShowRect = pdfPageTopBar.frame;
bottomBarShowRect = pdfPageBottomBar.frame;
backButtonShowRect = backButtonOutlet.frame;
topBarTitleLabelShowRect = pdfTitleOutlet.frame;
searchButtonShowRect = searchButtonOutlet.frame;
helpButtonShowRect = helpButtonOutlet.frame;
gotoPageButtonShowRect = gotoPageButtonOutlet.frame;
gotoSliderShowRect = goToPageSlider.frame;
commentsButtonShowRect = commentsButtonOutlet.frame;
viewAllButtonShowRect = viewAllCommentsButtonOutlet.frame;
// Initialising top & bottom bar elements hide rect
topBarHideRect = pdfPageTopBar.frame;
backButtonHideRect = backButtonOutlet.frame;
topBarTitleLabelHideRect = pdfTitleOutlet.frame;
searchButtonHideRect = searchButtonOutlet.frame;
bottomBarHideRect = pdfPageBottomBar.frame;
helpButtonHideRect = helpButtonOutlet.frame;
gotoPageButtonHideRect = gotoPageButtonOutlet.frame;
gotoSliderHideRect = goToPageSlider.frame;
commentsButtonHideRect = commentsButtonOutlet.frame;
viewAllButtonHideRect = viewAllCommentsButtonOutlet.frame;
topBarHideRect.origin.y = topBarHideRect.origin.y - 44.0;
backButtonHideRect.origin.y = backButtonHideRect.origin.y - 44.0;
topBarTitleLabelHideRect.origin.y = topBarTitleLabelHideRect.origin.y - 44.0;
searchButtonHideRect.origin.y = searchButtonHideRect.origin.y + 74.0;
bottomBarHideRect.origin.y = bottomBarHideRect.origin.y + 74.0;
helpButtonHideRect.origin.y = helpButtonHideRect.origin.y - 44;
gotoPageButtonHideRect.origin.y = gotoPageButtonHideRect.origin.y + 73.0;
gotoSliderHideRect.origin.x = gotoSliderHideRect.origin.x - 70.0;
commentsButtonHideRect.origin.y = commentsButtonHideRect.origin.y + 74.0;
viewAllButtonHideRect.origin.y = viewAllButtonHideRect.origin.y + 74.0;
}
else if(delegate.currentOrientation == UIInterfaceOrientationPortraitUpsideDown || delegate.currentOrientation == UIInterfaceOrientationPortrait)
{
currPage.frame = CGRectMake( 0.0, 0.0, 768.0, 1004.0);
tiledLayerSize = tiledLayerSizePortrait;
searchMenus.frame = CGRectMake(568, 890, 400, 55);
// Customising go to page slider
CGAffineTransform trans = CGAffineTransformMakeRotation (M_PI * 0.5);
goToPageSlider.transform = trans;
goToPageSlider.minimumValue = 1;
goToPageSlider.maximumValue = totalNoOfScriptPages;
goToPageSlider.frame = CGRectMake(15.0,90.0, 50.0, 825.0);
CGRect frame20=backButtonOutlet.frame;
frame20.origin.x=8;
frame20.origin.y=4;
frame20.size.width=69;
frame20.size.height=35;
backButtonOutlet.frame=frame20;
CGRect frame4=pdfPageTopBar.frame;
frame4.origin.x=0;
frame4.origin.y=0;
frame4.size.width=768;
frame4.size.height=44;
pdfPageTopBar.frame=frame4;
CGRect frame5=pdfTitleOutlet.frame;
frame5.origin.x=187;
pdfTitleOutlet.frame=frame5;
CGRect frame6=helpButtonOutlet.frame;
frame6.origin.x=687;
frame6.origin.y=3;
frame6.size.width=76;
frame6.size.height=36;
helpButtonOutlet.frame=frame6;
CGRect frame10=pdfPageBottomBar.frame;
frame10.origin.x=-2;
frame10.origin.y=931;
frame10.size.width=770;
frame10.size.height=74;
pdfPageBottomBar.frame=frame10;
CGRect frame11=searchButtonOutlet.frame;
frame11.origin.x=195;
frame11.origin.y=931;
searchButtonOutlet.frame=frame11;
CGRect frame12=gotoPageButtonOutlet.frame;
frame12.origin.x=387;
frame12.origin.y=931;
frame12.size.width=192;
frame12.size.height=74;
gotoPageButtonOutlet.frame=frame12;
CGRect frame13=backButtonOutlet.frame;
frame13.origin.x=9;
frame13.origin.y=4;
frame13.size.width=69;
frame13.size.height=35;
backButtonOutlet.frame=frame13;
CGRect frame17=commentsButtonOutlet.frame;
frame17.origin.x=1;
frame17.origin.y=931;
commentsButtonOutlet.frame=frame17;
CGRect frame18=viewAllCommentsButtonOutlet.frame;
frame18.origin.x=580;
frame18.origin.y=931;
viewAllCommentsButtonOutlet.frame=frame18;
CGRect frame14=modeSwitchBtnImage.frame;
frame14.origin.x=602;
modeSwitchBtnImage.frame=frame14;
CGRect frame16=modeSwitchBtnOutlet.frame;
frame16.origin.x=602;
modeSwitchBtnOutlet.frame=frame16;
CGRect frameDoneBtn = commentDoneButtonOutlet.frame;
frameDoneBtn.origin.x = 599;
commentDoneButtonOutlet.frame = frameDoneBtn;
//to remove thr popover for goto page
if([objGoToPagePopOverController isPopoverVisible])
{
[objGoToPagePopOverController dismissPopoverAnimated:YES];
}
//for comments
if(commentsView.hidden == NO && isKeyBoardShown == YES)
{
commentsView.frame = CGRectMake(0,535,768,205);
CGRect pageTextCommentsFrame = pageTextComments.frame;
pageTextCommentsFrame.size.height = 135;
pageTextCommentsFrame.size.width = 728;
pageTextComments.frame = pageTextCommentsFrame;
}
else if(commentsView.hidden == NO && isKeyBoardShown == NO)
{
commentsView.frame = CGRectMake(0, 568, 768, 362);
CGRect pageTextCommentsFrame = pageTextComments.frame;
pageTextCommentsFrame.size.height = 290;
pageTextCommentsFrame.size.width = 725;
pageTextComments.frame = pageTextCommentsFrame;
}
// Initialising top & bottm bar elements show rect
topBarShowRect = pdfPageTopBar.frame;
bottomBarShowRect = pdfPageBottomBar.frame;
backButtonShowRect = backButtonOutlet.frame;
topBarTitleLabelShowRect = pdfTitleOutlet.frame;
searchButtonShowRect = searchButtonOutlet.frame;
helpButtonShowRect = helpButtonOutlet.frame;
gotoPageButtonShowRect = gotoPageButtonOutlet.frame;
gotoSliderShowRect = goToPageSlider.frame;
commentsButtonShowRect = commentsButtonOutlet.frame;
viewAllButtonShowRect = viewAllCommentsButtonOutlet.frame;
// Initialising top & bottom bar elements hide rect
topBarHideRect = pdfPageTopBar.frame;
backButtonHideRect = backButtonOutlet.frame;
topBarTitleLabelHideRect = pdfTitleOutlet.frame;
searchButtonHideRect = searchButtonOutlet.frame;
bottomBarHideRect = pdfPageBottomBar.frame;
helpButtonHideRect = helpButtonOutlet.frame;
gotoPageButtonHideRect = gotoPageButtonOutlet.frame;
gotoSliderHideRect = goToPageSlider.frame;
commentsButtonHideRect = commentsButtonOutlet.frame;
viewAllButtonHideRect = viewAllCommentsButtonOutlet.frame;
topBarHideRect.origin.y = topBarHideRect.origin.y - 44.0;
backButtonHideRect.origin.y = backButtonHideRect.origin.y - 44.0;
topBarTitleLabelHideRect.origin.y = topBarTitleLabelHideRect.origin.y - 44.0;
searchButtonHideRect.origin.y = searchButtonHideRect.origin.y + 74.0;
bottomBarHideRect.origin.y = bottomBarHideRect.origin.y + 74.0;
helpButtonHideRect.origin.y = helpButtonHideRect.origin.y - 44;
gotoPageButtonHideRect.origin.y = gotoPageButtonHideRect.origin.y + 74.0;
gotoSliderHideRect.origin.x = gotoSliderHideRect.origin.x - 70.0;
commentsButtonHideRect.origin.y = commentsButtonHideRect.origin.y + 74.0;
viewAllButtonHideRect.origin.y = viewAllButtonHideRect.origin.y + 74.0;
}
}
【讨论】：