Ios 纳契弗。从plist加载自定义对象数组
我正在尝试加载.plist文件 进入我的cusom对象数组,称为属性。这里是属性。h:Ios 纳契弗。从plist加载自定义对象数组,ios,objective-c,plist,Ios,Objective C,Plist,我正在尝试加载.plist文件 进入我的cusom对象数组,称为属性。这里是属性。h: #import <Foundation/Foundation.h> #import <UIKit/UIKit.h> @interface Property : NSObject<NSCoding> { int price_base; float state; float infrastructure; } -(id)initWithCoder:(
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
@interface Property : NSObject<NSCoding> {
int price_base;
float state;
float infrastructure;
}
-(id)initWithCoder:(NSCoder *)decoder;
-(void)encodeWithCoder:(NSCoder *)aCoder;
@end
#import "Property.h"
@implementation Property
-(void)encodeWithCoder:(NSCoder *)aCoder
{/*No need to encode yet*/}
-(id)initWithCoder:(NSCoder *)decoder {
if (self = [super init]) {
price_base = [decoder decodeIntForKey:@"price_base"];
state = [decoder decodeFloatForKey:@"state"];
infrastructure = [decoder decodeFloatForKey:@"infrastructure"];
}
return self;
}
@end
下一步是执行尝试加载对象的代码:
-(void)loadProperty
{
NSString *resourcePath = [[NSBundle mainBundle] pathForResource:@"Property" ofType:@"plist"];
NSMutableArray *propertyArray = [[NSMutableArray alloc] init];
propertyArray = [[NSKeyedUnarchiver unarchiveObjectWithFile:resourcePath] mutableCopy];
}
在运行时,有一个异常会删除下一个:
[\uu\NSCFArray objectForKey:]:发送到实例的选择器无法识别
0x7F99E5102C0 2015-04-30 17:40:52.616房地产[5838:2092569]***
由于未捕获异常而终止应用程序
“NSInvalidArgumentException”,原因:”-[\uu NSCFArray objectForKey:]:
已将无法识别的选择器发送到实例0x7F99E5102C0'
有人知道代码有什么问题吗?我对XCode和ObjectiveC还比较陌生,所以非常感谢您的帮助 您混淆了归档和序列化
NSString *resourcePath =
[[NSBundle mainBundle] pathForResource:@"Property" ofType:@"plist"];
NSMutableArray *propertyArray = [[NSMutableArray alloc] init];
propertyArray =
[[NSKeyedUnarchiver unarchiveObjectWithFile:resourcePath] mutableCopy];
这不是读取.plist文件的方式。它不是存档的,您也不需要非存档者来阅读它。它是一个数组,所以只需将其直接读入NSArray(initWithContentsOfFile:
)
结果,一切都是不可变的。如果这不是您想要的,那么您需要NSPropertyListSerialization类来帮助您。是的,似乎我对归档和序列化很困惑。因此,我对代码进行了如下修改:
-(void)loadProperty
{
NSString *resourcePath = [[NSBundle mainBundle] pathForResource:@"Property" ofType:@"plist"];
NSArray *temp = [[NSArray alloc] initWithContentsOfFile:resourcePath];
NSMutableArray *propertyArray = [[NSMutableArray alloc] init];
for(NSDictionary *dict in temp) {
Property *prop = [Property alloc];
prop.price_base = (int)[[dict valueForKey:@"price_base"] integerValue];
prop.state = [[dict valueForKey:@"state"] floatValue];
prop.infrastructure = [[dict valueForKey:@"infrastructure"] floatValue];
[propertyArray addObject:prop];
}
}
而且看起来效果不错。谢谢 为什么需要使用键控的无归档器
NSMutableDictionary
已包含要读取/写入.plist
文件的代码。