A summary of the method of dictionary turn model

The first step: convert the elements of the dictionary into instance variables, in which the types are different;

The code is as follows:

1 //2 //HMQuestion.h3 //01-Super Guessing chart4 //5 //Created by Administrator on 15/10/7.6 //Copyright 2015 CCSU. All rights reserved.7 //8 9#import <Foundation/Foundation.h>Ten  One @interface Hmquestion:nsobject A@property (nonatomic,copy) NSString *answer;// Note the NSString type is copy  -@property (nonatomic,copy) NSString *icon; -@property (nonatomic,copy) NSString *title; the@property (nonatomic,strong) Nsarray *options;//nsarray type is strong  -  --(Instancetype) Initwithdict: (Nsdictionary *) dict; -+ (Instancetype) questionwithdict: (Nsdictionary *) dict; + /** Returns an array of all topics*/ -+ (Nsarray *) questions; +@end

Third step Write class method: (note logic)

Fourth Step dictionary to model: (note steps)

1 //2 //hmquestion.m3 //01-Super Guessing chart4 //5 //Created by Administrator on 15/10/7.6 //Copyright 2015 CCSU. All rights reserved.7 //8 9#import"HMQuestion.h"Ten  One @implementation hmquestion A-(Instancetype) Initwithdict: (Nsdictionary *) dict{ -Self =[Super init]; -     if(self) { the [self setvaluesforkeyswithdictionary:dict]; -     } -     returnSelf ; - } ++ (Instancetype) questionwithdict: (Nsdictionary *) dict{ -  +     return[[Self alloc]initwithdict:dict]; A } at  -  -+ (Nsarray *) questions{ -Nsarray *array = [Nsarray arraywithcontentsoffile:[[nsbundle mainbundle]pathforresource:@"questions.plist"Oftype:nil]]; -Nsmutablearray *arraym =[Nsmutablearray array]; -      in      for(Nsdictionary *dicinchArray) { - [Arraym addobject:[self questionwithdict:dic]; to          +     } -     returnArraym; the}

Fifth step: Create an Instance object with reference to the file in the main file for lazy loading:

1 //2 //VIEWCONTROLLER.M3 //01-Super Guessing chart4 //5 //Created by Administrator on 15/10/6.6 //Copyright 2015 CCSU. All rights reserved.7 //8 9#import"ViewController.h"Ten#import"HMQuestion.h" One  A @interface Viewcontroller () -@property (Weak, nonatomic) Iboutlet UIButton *Iconbutton; -@property (nonatomic,strong) UIButton *cover; the@property (nonatomic,strong) Nsarray *questions; - @end -  - @implementation Viewcontroller +  --(Nsarray *) Questions + { A     if(_questions = =Nil) { at_questions =[hmquestion questions]; -     } -     return_questions; -  -}

Sixth step: Test success

 1 -(void  ) viewdidload  2  {  [ Super Viewdidload];  4  NSLog (@ " %@   " ,self.questions);  5   for (Hmquestion *obj in self.questions)    { 6  //  7  "  8 } 

Test optimization: Override the Description method (if the occurrence of Chinese may be garbled, so you need to introduce Nsarray+log.h and NSARRAY+LOG.M files, directly add it, without the header file reference):

1 -(NSString *) description2{3     return [NSString stringWithFormat:@ "  <%@:%p>{answer:%@,icon:%@,title:%@, options:%@}",
                Self. class , self,self.answer,self.icon,self.title,self.options]; 4 5 6 }

The optimizations in Viewdidload are as follows:

 1 -(void  ) viewdidload  2  {  [ Super Viewdidload];  4   NSLog (@ "%@", self.questions);  5  for  (hmquestion *obj in   Self.questions) { 6  NSLog (
   
    @ " 
    %@  
    "  
     7   8  }
   

Additional: Nsarray+log.h and NSARRAY+LOG.M files:

1 //2 //nsarray+log.h3 //Application Management4 //5 //Created by Fan Liu on 14/8/14.6 //Copyright (c) 2014 itcast. All rights reserved.7 //8 9#import <Foundation/Foundation.h>Ten  One @interface Nsarray (Log) A  -@end

1 //2 //NSARRAY+LOG.M3 //Application Management4 //5 //Created by Fan Liu on 14/8/14.6 //Copyright (c) 2014 itcast. All rights reserved.7 //8 9#import"nsarray+log.h"Ten  One @implementation Nsarray (Log) A  --(NSString *) Descriptionwithlocale: (ID) locale - { thensmutablestring *STRM = [nsmutablestring stringwithstring:@"(\ n"]; -      -      for(ID objinchSelf ) { -[StrM AppendFormat:@"\t%@,\n", obj]; +     } -      +[StrM appendString:@") \ n"]; A      at     returnStrM; - } -  -@end

A summary of the method of dictionary turn model