ios16--Custom Controls 1

K Controller:

// //   XMGViewController.h#import <UIKit/UIKit.h>@interface  Xmgviewcontroller : Uiviewcontroller@end

////XMGVIEWCONTROLLER.M#import "XMGViewController.h"#import "XMGShop.h"#import "XMGShopView.h"@interfaceXmgviewcontroller ()//Shopping Cart@property (Weak, nonatomic) Iboutlet UIView *Shopcarview;//Add button@property (Weak, nonatomic) Iboutlet UIButton *AddButton;//Delete button@property (Weak, nonatomic) Iboutlet UIButton *RemoveButton;/** Data Array*/@property (nonatomic, strong) Nsarray*Dataarr;@end@implementationXmgviewcontroller/** Lazy Loading*/-(Nsarray *) dataarr{if(_dataarr = =Nil) {        //Loading Data//1. Get the full pathNSString *datapath = [[NSBundle mainbundle] Pathforresource:@"shopdata.plist"Oftype:nil]; Self.dataarr=[Nsarray Arraywithcontentsoffile:datapath]; //Dictionary Turn Model//creating a temporary arrayNsmutablearray *temparray =[Nsmutablearray array];  for(Nsdictionary *dictinchSelf.dataarr) {//Create Shop ObjectsXmgshop *shop =[Xmgshop shopwithdict:dict]; //load the model into an array[Temparray Addobject:shop]; } Self.dataarr=Temparray; }    return_dataarr;}//Initializing Data- (void) viewdidload {[Super viewdidload];}/** * Add to Cart * * @param button*/-(Ibaction) Add: (UIButton *) button {/***********************1. Define some constants *****************************/    //1. Total number of columnsNsinteger Allcols =3; //2. Width and height of the productCGFloat width = the; CGFloat height= -; //3. Finding the horizontal and vertical spacingCGFloat Hmargin = (self.shopcarview.frame.size.width-allcols * width)/(Allcols-1); CGFloat Vmargin= (Self.shopCarView.frame.size.height-2* height)/1; //4. Setting the indexNsinteger index =Self.shopCarView.subviews.count; //5. Find the X valueCGFloat x = (hmargin + width) * (index%allcols); CGFloat y= (vmargin + height) * (Index/allcols); /***********************2. Create a product *****************************/    /*Original Separate creation://1. Create a view UIView *shopview = [[UIView alloc] init];      2. Set Frame Shopview.frame = CGRectMake (x, y, width, height);      3. Set the background color Shopview.backgroundcolor = [Uicolor Greencolor];      4. Add to Cart [Self.shopcarview Addsubview:shopview];    5. Create the Uiimageview object of the product uiimageview *iconview = [[Uiimageview alloc] init];    Iconview.frame = CGRectMake (0, 0, width, width);    Iconview.backgroundcolor = [Uicolor Bluecolor];      [Shopview Addsubview:iconview];    6. Create a product title object UILabel *titlelabel = [[UILabel alloc] init];    Titlelabel.frame = CGRectMake (0, Width, width, height-width);    Titlelabel.backgroundcolor = [Uicolor Yellowcolor]; Titlelabel.textalignment = Nstextalignmentcenter;     Center [Shopview Addsubview:titlelabel]; */Xmgshopview*shopview =[[Xmgshopview alloc] init]; Shopview.frame=CGRectMake (x, y, width, height);    [Self.shopcarview Addsubview:shopview]; /***********************3. Setting up data *****************************/    //Setting up dataXmgshop *shop =Self.dataarr[index]; ShopView.iconView.image=[UIImage ImageNamed:shop.icon]; ShopView.titleLabel.text=Shop.name; /***********************4. Setting the state of the button *****************************/button.enabled= (Index! =5); //5. Set the status of the delete buttonself.removeButton.enabled =YES; }/** * Remove from cart * * @param button*/-(Ibaction) Remove: (UIButton *) button {//1. Delete the last itemUIView *lastshopview =[Self.shopCarView.subviews Lastobject];        [Lastshopview Removefromsuperview]; //3. Set the status of the Add buttonself.addButton.enabled =YES; //4. Set the status of the delete buttonself.removeButton.enabled = (Self.shopCarView.subviews.count! =0); }@end

custom controls;

// //   XMGShopView.h#import <UIKit/UIKit.h>@interface  xmgshopview:uiview /*  */*iconview; // [self addsubview:iconview]; there is already a strong pointer reference, here with weak /* * * *Titlelabel;    @end

////xmgshopview.m#import "XMGShopView.h"@interfaceXmgshopview ()@end@implementationXmgshopview/** * Initialize child controls (do not set frame, get width height is 0, can be obtained at layoutsubviews) **/-(instancetype) init{if(self =[Super Init]) {        /*//0. Gets the size of the current control cgfloat width = self.frame.size.width; CGFloat height = self.frame.size.height;        NSLog (@ "init:%f----%f", width, height); */        //1. Create a Uiimageview object for a productUiimageview *iconview =[[Uiimageview alloc] init];//iconview.frame = CGRectMake (0, 0, width, width);Iconview.backgroundcolor =[Uicolor Bluecolor];        [Self addsubview:iconview]; Self.iconview=IconView; //2. Create a product Title objectUILabel *titlelabel =[[UILabel alloc] init];//titlelabel.frame = CGRectMake (0, Width, width, height-width);Titlelabel.backgroundcolor =[Uicolor Yellowcolor]; Titlelabel.textalignment= Nstextalignmentcenter;//Center[Self Addsubview:titlelabel];//The strong pointer references theSelf.titlelabel = Titlelabel;//Titlelabel becomes global, otherwise the Layoutsubviews () method cannot get inside,    }    returnSelf ;}/** * Layout Sub-controls (can get frame)*/- (void) layoutsubviews{//0. Be sure to call super to preserve the layout of the parent class system. Otherwise, the layout of the parent class is gone. [Super Layoutsubviews]; //1. Get the dimensions of the current controlCGFloat width = self.frame.size.width;//This frame is from the outside Shopview.frame = CGRectMake (x, y, width, height);CGFloat height =Self.frame.size.height; //2. Set the frame of the child controlSelf.iconView.frame = CGRectMake (0,0, width, width); Self.titleLabel.frame= CGRectMake (0, width, width, height-width);}@end

Bean:

////XMGShop.h#import<Foundation/Foundation.h>@interfaceXmgshop:nsobject/** Name of the picture*/@property (nonatomic, copy) NSString*icon;/** Name of the product*/@property (nonatomic, copy) NSString*name;//provides construction methods/*-(Instancetype) Initwithicon: (NSString *) icon Name: (NSString *) name;+ (instancetype) Shopwithicon: (NSString *) Icon Name: (NSString *) name; */-(Instancetype) Initwithdict: (Nsdictionary *) dict;+ (Instancetype) shopwithdict: (Nsdictionary *) dict;@end

////xmgshop.m#import "XMGShop.h"@implementationXmgshop/*-(Instancetype) Initwithicon: (NSString *) icon Name: (NSString *) name{if (self = [super init]) {Self.icon =        Icon    Self.name = name; } return self;} + (Instancetype) Shopwithicon: (NSString *) icon Name: (NSString *) name{return [[Self alloc] Initwithicon:icon name:name]; } */-(Instancetype) Initwithdict: (Nsdictionary *) dict{if(self =[Super Init]) {Self.icon= dict[@"icon"]; Self.name= dict[@"name"]; }    returnSelf ;}+ (Instancetype) shopwithdict: (Nsdictionary *) dict{return[Self alloc] initwithdict:dict];}@end

ios16--Custom Controls 1