iOS Quick Integration Search Interface drop-down menu frame

Objective

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Demo Effect:
. Gifdemo Demo: 1. Create a drop-down menu

    YZPullDownMenu *menu = [[YZPullDownMenu alloc] init];    menu.frame = CGRectMake(0, 20, YZScreenW, 44);    [self.view addSubview:menu];

2. Setting the drop-down menu agent

menu.dataSource = self;

3. Add a sub-controller for all drop-down menus

为什么要这样设计?, because each app's drop-down menu is not deterministic, so it's up to each developer to decide on the drop-down menu interface.

- (void)setupAllChildViewController{    YZAllCourseViewController *allCourse = [[YZAllCourseViewController alloc] init];    YZSortViewController *sort = [[YZSortViewController alloc] init]; YZMoreMenuViewController *moreMenu = [[YZMoreMenuViewController alloc] init]; // 控制器最好作为自己的子控制器 [self addChildViewController:allCourse]; [self addChildViewController:sort]; [self addChildViewController:moreMenu];}

4. Implementing the Yzpulldownmenu Data source method

#pragma mark-yzpulldownmenudatasourceReturns the number of drop-down menu columns-(Nsinteger) Numberofcolsinmenu: (Yzpulldownmenu *) pulldownmenu{Return3;}Returns the drop-down menu for each column button-(UIButton *) Pulldownmenu: (Yzpulldownmenu *) Pulldownmenu Buttonforcolatindex: (Nsinteger) index{Yzmenubutton *button = [Yzmenubutton buttonwithtype:Uibuttontypecustom]; [Button Settitle:_titles[index] forstate:UIControlStateNormal]; [Button settitlecolor:[Uicolor Blackcolor] Forstate:UIControlStateNormal]; [Button settitlecolor:[Uicolor colorwithred:25/255.0 Green:143/255.0 Blue:238/255.0 Alpha:1] forstate:Uicontrolstateselected]; [Button setimage:[UIImage imagenamed:@ "label-down Arrow"] forstate:UIControlStateNormal]; [Button setimage:[UIImage imagenamed:@ "label-up Arrow"] forstate:Uicontrolstateselected];return button;}Returns the corresponding controller for each column in the drop-down menu-(Uiviewcontroller *) Pulldownmenu: (Yzpulldownmenu *) Pulldownmenu Viewcontrollerforcolatindex: (Nsinteger) index{ return self. Childviewcontrollers[index];} //Returns the height of each column of the drop-down menu-(cgfloat) Pulldownmenu: (Yzpulldownmenu *) Pulldownmenu heightforcolatindex: (Nsinteger) index{ //1th column height if (index = = 0) { return 400;} //2nd Column height if (index = = 1) { return 180;} //3rd column height return ;}              

5. "Update the menu title, you need to send a notification to me"

为什么要这样设计？Decoupling, your own controller does not need to import my frame's header file, the intrusion is not big.

"Update Menu title step"

• 1. 【extern NSString * const YZUpdateMenuTitleNote;】 copy this line of code to your own controller, which is in YZPullDownMenu.h

• 2. In the method of selecting the title, send the following notification
  [[Nsnotificationcenter Defaultcenter] postnotificationname:yzupdatemenutitlenote object:self userInfo:@{@ "title": Cell.textLabel.text}];

• 3.1 postnotificationname: Notification name = =【YZUpdateMenuTitleNote】

• 3.2 object: who sent the notification = "Self" (current controller)

• 3.3 UserInfo: Check header information + can be multiple keys, multiple value, not fixed, because some interface, you need to tick a lot of options, key can be arbitrarily defined.

• 3.4 The bottom level will automatically determine how many value of the current userinfo, if one will be directly updated menu title, there will be more updates to meet most requirements.

• 3.5 notification will automatically bounce back drop-down menu

5.1 can refer to the code in Yzsortviewcontroller

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{    _selectedCol = indexPath.row;    // 选中当前 YZSortCell *cell = [tableView cellForRowAtIndexPath:indexPath]; // 更新菜单标题 [[NSNotificationCenter defaultCenter] postNotificationName:YZUpdateMenuTitleNote object:self userInfo:@{@"title":cell.textLabel.text}];}

Source

Click here to download the source code

Wen/Zheng (Jane book author)
Original link: http://www.jianshu.com/p/0e1bb29be42e
Copyright belongs to the author, please contact the author to obtain authorization, and Mark "book author".

iOS Quick Integration Search Interface drop-down menu frame