Data model Building and lazy loading data

1, the construction of the data model

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

#import " AppModel.h " @implementation Appmodel-(Instancetype) Initwithdict: (Nsdictionary *) dict {  if (self = [Super init ]) {        [self setvaluesforkeyswithdictionary:dict];  }     return Self ;} + (Instancetype) appmodelwithdict: (Nsdictionary *) dict {  return  [[Self alloc] Initwithdict:dict];} @end

2. Lazy Loading Data

@interfaceViewcontroller () @property (nonatomic, strong) Nsmutablearray*DataArray;@end@implementationViewcontroller
-(Nsmutablearray *) DataArray {if(Nil = =_dataarray) {_dataarray=[Nsmutablearray array]; //reading data from the plistNSString *path = [[NSBundle mainbundle] Pathforresource:@"app.plist"Oftype:nil]; Nsarray*array =[Nsarray Arraywithcontentsoffile:path]; //Dictionary Turn Model     for(Nsdictionary *dictinchArray) {Appmodel*model =[Appmodel appmodelwithdict:dict];    [_dataarray Addobject:model]; }  }  return_dataarray;}@end

PS: Because the Getter method is overridden, the call must be called self.dataarray[]

Data model Building and lazy loading data