iOS Apple comes with Uimenucontroller

First, Uimenucontroller know

• 1. By default, Uitextview/uitextfiled/uiwebview has the Uimenucontroller function with Apple's own

• 2.UITextFiled pop-up menu effect system comes with

  
  

• 3. Of course, the system only provides this functionality to certain controls, but we can add that functionality to the specified control ourselves, and as for how to add it, let's take a quick look at how to use the system-provided Uimenucontroller functionality

Second, the basic use of Uimenucontroller

• How to learn Uimenucontroller use, view header file is the most direct way.

• Available: Uimenucontroller inherit nsobject; we can customize; Get singleton objects by Sharedmenucontroller; You must manually set the pop-up menu to be visible; Specify which location of the pop-up window is displayed relative to which view; Specifies its display direction (up and down), specifies multiple (array) of item, and can specify menuframe; not only that, the system also provides a notification that can listen to the menu (coming/fully displayed, soon to hide/completely hidden, the menu frame changed)

• 1. Get Menu

  UIMenuController *menu = [UIMenuController sharedMenuController];

• 2. Set the location of the final display of the menu

    // 菜单最终显示的位置  CGRect rect = CGRectMake(100, 100, 100, 100); [menu setTargetRect:rect inView:self.label]; /* targetRect：menuController指向的矩形框 targetView：targetRect以targetView的左上角为坐标原点 */

• 3. Manual setup required, display menu

  // 显示菜单[menu setMenuVisible:YES animated:YES];

• 4. It must be through the first responder to tell Menucontroller what it should look inside

  • 4.1 How do I tell what the display is?
    • Let the first responder, implement the following method, to tell the display, listen to what action action

  /*** This method tells Uimenucontroller what content it should display inside * Return Yes to support action this action */-(BOOL)Canperformaction:(SEL) ActionWithsender:(ID) sender{NSLog (@"%@", Nsstringfromselector (action));if (action = =@selector (Cut:) | | Action = =@selector (Copy:) | | Action = =@selector (Paste:)) {ReturnYES;YES, on behalf of us only listen to cut:/copy:/paste: Method}ReturnNO;Except for the above operation, it is not supported}Print as follows:2015-7-2810: 06: 25.578Uimenucontroller[4,735:388,013]Cut2015-7-2810: 06: 25.581Uimenucontroller[4,735:388,013]Copy2015-7-2810: 06: 25.581Uimenucontroller[4,735:388,013]Select2015-7-2810: 06: 25.582Uimenucontroller[4,735:388,013]SelectAll:2015-7-2810: 06: 25.582Uimenucontroller[4,735:388,013]Paste2015-7-2810: 06: 25.582Uimenucontroller[4,735:388,013]Delete2015-7-2810: 06: 25.582Uimenucontroller[4,735:388,013]_promptforreplace:2015-7-2810: 06: 25.583Uimenucontroller[4,735:388,013]_transliteratechinese:2015-7-2810: 06: 25.583Uimenucontroller[4,735:388,013]_showtextstyleoptions:2015-7-2810: 06: 25.583Uimenucontroller[4,735:388,013]_define:2015-7-2810: 06: 25.583Uimenucontroller[4,735:388,013]_addshortcut:2015-7-2810: 06: 25.583Uimenucontroller[4,735:388,013]_accessibilityspeak:2015-7-2810: 06: 25.583Uimenucontroller[4,735:388,013]_accessibilityspeaklanguageselection:2015-7-2810: 06: 25.583Uimenucontroller[4,735:388,013]_accessibilitypausespeaking:2015-7-2810:06:25.583 uimenucontroller[4735:388013] _share:2015-7-28 10:06:25.584  Uimenucontroller[4735:388013]  Maketextwritingdirectionrighttoleft:2015-7-28  10:06:25.584 uimenucontroller[4735:388013] maketextwritingdirectionlefttoright:        

  • 4.2 Setting the first responder
    • The premise is: Must have first responder, let the first responder, implement the above method, tell what content to show. Implement the following method to make a view or controller a first responder: the Canbecomefirstresponder method.

  /*** 说明控制器可以成为第一响应者*/- (BOOL)canBecomeFirstResponder{  return YES;}

• 5. The corresponding action method to implement the listener menu content

 - (void)cut:(UIMenuController *)menu{    NSLog(@"%s %@", __func__, menu);}- (void)copy:(UIMenuController *)menu{ NSLog(@"%s %@", __func__, menu);}- (void)paste:(UIMenuController *)menu{ NSLog(@"%s %@", __func__, menu);}

• 6. Of course, we can also hear the menu display and hidden and frame changes notice.

  • As follows: Listen to the notification that menu is about to display

    • 1. Registration Notification Monitoring

      // 注册监听 菜单即将显示 通知[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(show:) name:UIMenuControllerWillShowMenuNotification object:nil];

    • 2. Implement the Monitor to hear the menu display call method

    - (void)dealloc{  // 移除监听通知  [[NSNotificationCenter defaultCenter] removeObserver:self];}

    • 3.dealloc method, remove notification listener

    - (void)dealloc{   // 移除监听通知  [[NSNotificationCenter defaultCenter] removeObserver:self];}

• 7. Of course the system provides the title of the MenuItem, the default is English, we can set the menu to support Chinese, display Chinese, modify software application support Chinese

  
  Snip20151028_12.png

• 8. How to customize Meun display your own defined text

  • Solution: Looking at the Uimenucontroller header file, we found a property MenuItems array, through which we can add additional menu items.

Attention:

• 1. Creation can only be obtained by [Uimenucontroller Sharedmenucontroller]; Singleton, cannot be created by INIT, otherwise the following error is reported

// 获得菜单 -> 回报如下错误UIMenuController *menu = [[UIMenuController alloc] init];  Terminating app due to uncaught exception ‘NSInternalInconsistencyException‘, reason: ‘There can only be one UIMenuController instance.‘

Third, the application of 1. How to add Uimenucontroller functionality to a label

• 1. Set Uilabel allow interaction
• 2. Add gestures to Uilabel,
• 3. In Uilabel gesture monitoring method, create uimenucontroller-"menu
• 4. Set the menu location and use the Uimenucontroller object method Settargetrect:inview: Method to set the menu display at that location in that control
• 6. Display menu,-"menu setmenuvisible:animation:
• 7. Set Menu Display content
  • Note: You have to tell the menu what's inside it by the first responder. If the Chinese title is displayed, you need to manually set the app support Chinese
  • Realize:
    • 7.1 Make the label the first responder (note: Not necessarily the first responder must be a controller)
    • 7.2 Set menu display MenuItem to tell menu what to display.

#import"JPLabel.h"@implementationjplabel-(void) awakefromnib{Add a phone to a label [Self addgesturerecognizer:[[UITapGestureRecognizer Alloc] Initwithtarget:Self action:@selector (Labelclick)];} - (void) initWithFrame: (CGRect) rect{IfSelf = [Super Initwithframe:rect]) {Add a phone to a label [Self addgesturerecognizer:[[UITapGestureRecognizer Alloc] Initwithtarget:Self action:@selector (Labelclick)]; }}- (void) labelclick{Make a label the first responder [Self Becomefirstresponder];Get MenuUimenucontroller *menu = [Uimenucontroller Sharedmenucontroller];Set menu contents, display Chinese, so to manually set app support Chinese menu.menuitems = @[[[UIMenuItem Alloc] Initwithtitle:@ "Top" action:@selector (ding:)], [[UIMenuItem Alloc] Initwithtitle:@ "Reply" Action:@selector (reply:)], [[UIMenuItem Alloc] Initwithtitle:@ "Report" Action:@selector (warn:)];Where the menu is finally displayed [menu Settargetrect:Self.bounds InView:Self];display menus [Menu setmenuvisible:YES Animated:YES];}#pragma mark-uimenucontroller Related/** * Let the label have the qualification to be the first responder */-(BOOL) canbecomefirstresponder{ReturnYES;}/** * This method of first responder tells Uimenucontroller what content can be displayed */-(BOOL) Canperformaction: (SEL) Action Withsender: (ID) sender{if (action = =@selector (Copy:) &&Self.text)Text is required to support replication | | (Action = =@selector (cut:) &&Self.text)Text is required to support clipping | | Action = =@selector (paste:) | | action = =@selector (ding:) | | action = =@selector (reply:) | | action = =@selector (warn:))ReturnYES;ReturnNO;}#pragma mark-Monitor the MenuItem click Event-(void) Cut: (Uimenucontroller *) menu{Save the label's text to the Pasteboard [Uipasteboard generalpasteboard].string =Self.text;Clear textSelf.text =Nil;} - (voidCopy: (Uimenucontroller *) menu{Save the label's text to the Pasteboard [Uipasteboard generalpasteboard].string =Self.text;} - (void) Paste: (uimenucontroller *) menu{ //assigns the text of the Pasteboard to label self.text = [uipasteboard Generalpasteboard]. string;} -(void) Ding: (uimenucontroller *) menu{ NSLog (@ "%s%@", __func__, menu);} -(void) Reply: (Uimenucontroller *) menu{ NSLog (@ "%s%@", __func__, menu);} -(void) warn: (uimenucontroller *) menu{ NSLog (@ "%s%@", __func__, menu);} @end

iOS Apple comes with Uimenucontroller