iOS 11th day (2:uipickerview custom flag selection)

Flag selection

#import "HMViewController.h"#import "HMFlag.h"#import "HMFlagView.h"@interfaceHmviewcontroller () <UIPickerViewDataSource,UIPickerViewDelegate>@property (nonatomic,strong) Nsarray*flags;@end@implementationHmviewcontroller-(Nsarray *) flags{if(_flags = =Nil) {NSString*filepath = [[NSBundle mainbundle] Pathforresource:@"Flags"OfType:@"plist"]; Nsarray*flagsarray =[Nsarray Arraywithcontentsoffile:filepath]; Nsmutablearray*FLAGSM =[Nsmutablearray array];  for(Nsdictionary *dictinchFlagsarray) {Hmflag*flag =[Hmflag flagwithdict:dict];        [Flagsm Addobject:flag]; } _flags=flagsm; }        return_flags;}- (void) viewdidload{[Super Viewdidload]; //additional setup after loading the view, typically from a nib.NSLog (@"%@", self.flags);}#pragmaMark-pickerview Data Source-(Nsinteger) Numberofcomponentsinpickerview: (Uipickerview *) pickerview{return 1;}-(Nsinteger) Pickerview: (Uipickerview *) Pickerview numberofrowsincomponent: (nsinteger) component{returnSelf.flags.count;}//-(NSString *) Pickerview: (Uipickerview *) Pickerview Titleforrow: (nsinteger) Row forcomponent: (Nsinteger) component{//Hmflag *flag =self.flags[row];//return flag.name;//}#pragmaMark is typically used to customize Pickerview's cellview-(UIView *) Pickerview: (Uipickerview *) Pickerview Viewforrow: (nsinteger) row Forcomponent: (Nsinteger) component Reusingview: (UIView *) view{#warningIn iOS7, a circular reference to a view is a bug.Hmflag*flag =Self.flags[row];//UILabel *label = [[UILabel alloc] init];//    //when customizing the view, setting x, Y is not valid, so don't do useless//    //label.frame = CGRectMake (ten, ten , A.);//label.bounds = CGRectMake (0, 0, ();//Label.backgroundcolor = [Uicolor graycolor];//label.text = flag.name;Hmflagview *flagview =Nil; //If view is not empty, it represents a view that can be recycled    if(View! =Nil) {Flagview= (Hmflagview *) view; }Else{Flagview=[Hmflagview Flagview]; }        //set the Flagview dataFlagview.flag =Flag; NSLog (@"%d%p", Row,flagview); returnFlagview;}#pragmaMark sets the height of each view in Picker-(cgfloat) Pickerview: (Uipickerview *) Pickerview rowheightforcomponent: (nsinteger) component{return  -;}

hmflagview.m

#import "HMFlagView.h"#import "HMFlag.h"@interfaceHmflagview () @property (weak, nonatomic) Iboutlet UILabel*Namelabel, @property (weak, nonatomic) Iboutlet Uiimageview*ImageView;@end@implementationHmflagview- (ID) initWithFrame: (cgrect) frame{ Self=[Super Initwithframe:frame]; if(self) {//Initialization Code    }    returnSelf ;}+(instancetype) flagview{return[[[NSBundle Mainbundle] loadnibnamed:@"Hmflagview"Owner:nil Options:nil] lastobject];}/*//Only override drawrect:if your perform custom drawing.//an empty implementation adversely affects performance Duri ng animation.-(void) DrawRect: (cgrect) rect{//Drawing code}*/-(void) Setflag: (Hmflag *) flag{_flag=Flag; Self.nameLabel.text=Flag.name; Self.imageView.image=[UIImage ImageNamed:flag.icon]; }@end

HMFlagView.h

#import <UIKit/UIKit.h>@class  hmflag; @interface Hmflagview:uiview+*flag; @end

Model HMFLAG.M

  #import  "     @implementation   Hmflag -(Instancetype) Initwithdict: (nsdictionary *) dict{ if  (self = [super Init]) {[Self setvaluesforkeyswithdictionary:dict];  return   self;}  + (Instancetype) flagwithdict: (nsdictionary *) dict{ return   [[self alloc] initwithdict:dict];}   @end  

Model HMFlag.h

#import <Foundation/Foundation.h>@interface**icon; -(Instancetype) Initwithdict: (Nsdictionary *) dict; + (Instancetype) flagwithdict: (Nsdictionary *) dict; @end

iOS 11th day (2:uipickerview custom flag selection)