swift--runtim获取变量信息

2015-08-02 YuLongLi 

首先我们创建一个class，添加如下成员变量

var list = Array<AnyObject>()

var name:String?

var i32 :UInt32?

var number :NSNumber?

var dict = Dictionary<String,AnyObject>()

我们分别通过Property和ivar来获取这些成员变量信息

1. property获取

 

var count:UInt32 = 0

var properList = class_copyPropertyList(self.classForCoder, &count)

for index in0 ... count-1 {

var item = properList[ Int(index)]

//获取变量名称

var proper_name = property_getName(item)

var properName = String.fromCString(proper_name)!

println("变量名称：" + properName )

//获取属性

var proper_attri = property_getAttributes(item)

var properAttri = String.fromCString(proper_attri)!

println( "变量属性：" + properAttri )

//获取属性value

var proper_attri_value = property_copyAttributeValue(item, proper_attri)

var properAttriValue:String? = String.fromCString(proper_attri_value)

println( "变量属性值：\(properAttriValue)" )

}

2.通过ivar获取

var count:UInt32 = 0

var ivar = class_copyIvarList(self.classForCoder, &count)

for index in0 ... count-1 {

var ivarName = ivar_getName( ivar[ Int(index) ] )

var ivarType = ivar_getTypeEncoding( ivar[ Int(index)])

 

var nEncodingType = String.fromCString(ivarType)!

var nName = String.fromCString(ivarName)!

println(" \(nName) \(nEncodingType) \(index)")

 

}

我们来看一下效果：

我们看到：通过property获取的少了UInt32的变量

然后我们把list设为private的再看一下效果：

我们看到property获取的结果中list木有了

 

 

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