IOS_21 group_pover for iPad horizontal and vertical screen Switching

IOS_21 group_pover for iPad horizontal and vertical screen Switching

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Code snippet: <喎?http: www.bkjia.com kf ware vc " target="_blank" class="keylink"> Vc3ryb25np1_vcd4kpha + PHByZSBjbGFzcz0 = "brush: java;"> /// DockItemLocation. m // handsome _ buy /// Created by beyond on 14-8-13. // Copyright (c) 2014 com. beyond. all rights reserved. // # import "DockItemLocation. h "// click locationBtn on the dock. The Popover encapsulated controller is displayed. The search bar is displayed at the top and tableView # import" CityLocationController at the bottom. h "// The button above is an image, and below is text, which is the ratio of the Image Height # define kImageHeightRatioInBtn 0.5 @ interface DockItemLocation () {// Popover controller. After the controller is created, the show method is displayed. Therefore, it cannot be a local variable and must be remembered using the member variable. Otherwise, the method btnClick is destroyed after being called, how can I display the pinch? UIPopoverController * _ popoverCtrl;} @ end @ implementation DockItemLocation-(id) initWithFrame :( CGRect) frame {self = [super initWithFrame: frame]; if (self) {// 1. call the method of the parent class and set the internal image [self setIcon: @ "ic_district.png" selectedIcon: @ "ic_district_hl.png"]; // 2. auto scaling self. autoresizingMask = UIViewAutoresizingFlexibleTopMargin; // 3. set the default text [self setTitle: @ "中"" forState: UIControlStateNormal]; self. titleLabel. f Ont = [UIFont systemFontOfSize: 16]; self. titleLabel. textAlignment = NSTextAlignmentCenter; [self setTitleColor: [UIColor whiteColor] forState: UIControlStateDisabled]; [self setTitleColor: [UIColor grayColor] forState: UIControlStateNormal]; // 4. set image attributes self. imageView. contentMode = UIViewContentModeCenter; // 5. click [Location] to display a Popover controller [self addTarget: self action: @ selector (locationBtnOnDockClic Ked) forControlEvents: UIControlEventTouchDown];} return self;} // 5. click [Location] for the listener. A Popover controller (void) locationBtnOnDockClicked {// disabled. You can click self only once. enabled = NO; // click locationBtn on the dock. The Popover encapsulated controller is displayed. The search bar is displayed at the top, and tableView CityLocationController * cityVC = [[CityLocationController alloc] init] at the bottom. // The only controller that does not inherit from UIViewController. It inherits from NSObject // popover controller. After the controller is created, the show method is displayed. Therefore, it cannot be a local variable, the member variables must be remembered; otherwise, Method B After tnClick is called, it will be destroyed. How can I display the pinch? _ PopoverCtrl = [[UIPopoverController alloc] initWithContentViewController: cityVC]; // set the display size of the Popover controller _ popoverCtrl. popoverContentSize = CGSizeMake (320,480); // proxy, listen to the XX Event _ popoverCtrl of the Popover controller. delegate = self; // because other methods need to be displayed, _ popoverCtrl is selected as the custom method [self showPopoverCtrl]; // when the screen is rotated, the position pointed to by the pop-up popover is incorrect. Therefore, it is necessary to register a notification to listen to the screen rotation. // remove the listener first to ensure robustness [[nsicationicationcenter defacenter center] removeObserver: sel F name: jsonobject: nil]; // Add another listener. Once the device has a UIDeviceOrientationDidChangeNotification, the system calls the [[nsicationicationcenter ultcenter] addObserver: self selector: @ selector (screenDidRotated) name: UIDeviceOrientationDidChangeNotification object: nil];} // 5-1, because the screen is rotated, _ popoverCtrl must be displayed again, so the custom method-(void) showPopoverCtrl {// Where is the display? If the target view is self, the rect uses bounds because the origin of bounds is relative to itself. // if the target view is self. superView, The rect uses frame, because the origin of the frame is relative to the parent control [_ popoverCtrl presentpoverfromrect: self. bounds inView: self permittedArrowDirections ctions: UIPopoverArrowDirectionAny animated: YES];} // 5-2. Add another listener. Once the listener appears on the device, the selector method (void) of the observer is called) screenDidRotated {if (_ popoverCtrl. popoverVisible) {// 1. close the _ popoverCtrl [_ poverctrl dismissPopoverAnimated: NO] above the previous position; // 2. after 0.5 seconds, create the _ popoverCtrl [self owned mselector: @ selector (showpoverctrl) withObject: nil afterDelay: 0.5] ;}# pragma mark-popOver proxy method-(void) popoverControllerDidDismissPopover :( UIPopoverController *) before the popoverController {// disappears, let the locate button restore and click the status self. enabled = YES; // before the message disappears, that is, when the popover is destroyed, the registered listener (notification) [[[nsicationicationcenter defacenter center] removeObserver: self name: UIDeviceOrientationDidChangeNotification object: nil] is removed;} # When pragma mark is destroyed, the current screen listening to the Controller is removed to prevent the wild pointer-(void) dealloc {[[nsicationicationcenter defacenter center] removeObserver: self];} # pragma mark-Override adjust image and text in the Frame-(CGRect) imageRectForContentRect :( CGRect) contentRect {CGFloat btnW = contentRect. size. width; CGFloat imgH = contentRect. size. height * weight; return CGRectMake (0, 0, btnW, imgH);}-(CGRect) titleRectForContentRect :( CGRect) contentRect {CGFloat btnW = contentRect. size. width; CGFloat textH = contentRect. size. height * (1-kImageHeightRatioInBtn); // The text is below, and the image is above CGFloat textY = contentRect. size. height-textH; return CGRectMake (0, textY, btnW, textH);} @ end