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Added in API level 21

LinkProperties

public final class LinkProperties
extends Object implements Parcelable

java.lang.Object
   ↳ android.net.LinkProperties


介绍网络链接的属性。 链接表示到网络的连接。 它可能有多个地址和多个网关,多个DNS服务器,但只有一个HTTP代理和一个网络接口。 请注意,这只是数据的持有者。 修改它不会影响现场网络。

Summary

Inherited constants

From interface android.os.Parcelable

Fields

public static final Creator<LinkProperties> CREATOR

实现Parcelable接口。

Public methods

int describeContents()

实现Parcelable接口

boolean equals(Object obj)

指示其他某个对象是否“等于”这一个。

List<InetAddress> getDnsServers()

返回此链接上所有DNS服务器的 InetAddress

String getDomains()

获取为此链接设置的DNS域搜索路径。

ProxyInfo getHttpProxy()

获取此链接上建议的 ProxyInfo (或 null )。

String getInterfaceName()

获取此链接的接口名称。

List<LinkAddress> getLinkAddresses()

返回此链接上的所有 LinkAddress

List<RouteInfo> getRoutes()

返回此链接上设置的所有 RouteInfo

int hashCode()

返回对象的哈希码值。

String toString()

返回对象的字符串表示形式。

void writeToParcel(Parcel dest, int flags)

实现Parcelable接口。

Inherited methods

From class java.lang.Object
From interface android.os.Parcelable

Fields

CREATOR

Added in API level 21
Creator<LinkProperties> CREATOR

实现Parcelable接口。

Public methods

describeContents

Added in API level 21
int describeContents ()

实现Parcelable接口

Returns
int a bitmask indicating the set of special object types marshaled by this Parcelable object instance.

equals

Added in API level 21
boolean equals (Object obj)

指示其他某个对象是否“等于”这一个。

equals方法在非空对象引用上实现等价关系:

  • It is reflexive: for any non-null reference value x, x.equals(x) should return true.
  • It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
  • For any non-null reference value x, x.equals(null) should return false.

Objectequals方法实现了对象上最可能的等价关系; 也就是说,对于任何非空参考值xy ,当且仅当xy引用同一对象( x == y的值为true )时,此方法返回true

请注意,无论何时覆盖此方法,通常都需要覆盖 hashCode方法,以便维护 hashCode方法的一般合同,该方法声明等同对象必须具有相同的散列代码。

Parameters
obj Object: the reference object with which to compare.
Returns
boolean true if this object is the same as the obj argument; false otherwise.

getDnsServers

Added in API level 21
List<InetAddress> getDnsServers ()

返回此链接上所有DNS服务器的 InetAddress

Returns
List<InetAddress> An umodifiable List of InetAddress for DNS servers on this link.

getDomains

Added in API level 21
String getDomains ()

获取为此链接设置的DNS域搜索路径。

Returns
String A String containing the comma separated domains to search when resolving host names on this link.

getHttpProxy

Added in API level 21
ProxyInfo getHttpProxy ()

获取此链接上建议的 ProxyInfo (或 null )。

Returns
ProxyInfo The ProxyInfo set on this link

getInterfaceName

Added in API level 21
String getInterfaceName ()

获取此链接的接口名称。 如果未设置,可能是null

Returns
String The interface name set for this link or null.

getLinkAddresses

Added in API level 21
List<LinkAddress> getLinkAddresses ()

返回此链接上的所有LinkAddress 通常,链接将具有一个IPv4地址和一个或多个IPv6地址。

Returns
List<LinkAddress> An unmodifiable List of LinkAddress for this link.

getRoutes

Added in API level 21
List<RouteInfo> getRoutes ()

返回此链接上设置的所有 RouteInfo

Returns
List<RouteInfo> An unmodifiable List of RouteInfo for this link.

hashCode

Added in API level 21
int hashCode ()

返回对象的哈希码值。 为了散列表的好处而支持此方法,例如HashMap提供的HashMap

hashCode的总合同是:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals(java.lang.Object) method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

尽可能合理实用,类Object定义的hashCode方法确实为不同的对象返回不同的整数。 (这通常通过将对象的内部地址转换为整数来实现,但Java TM编程语言不需要此实现技术。)

Returns
int a hash code value for this object.

toString

Added in API level 21
String toString ()

返回对象的字符串表示形式。 通常, toString方法返回一个“文本表示”该对象的字符串。 结果应该是一个简洁但内容丰富的表述,对于一个人来说很容易阅读。 建议所有子类重写此方法。

ObjecttoString方法返回一个字符串,其中包含对象为实例的类的名称,符号字符“ @ ”以及对象的哈希代码的无符号十六进制表示形式。 换句话说,这个方法返回一个字符串,其值等于:

 getClass().getName() + '@' + Integer.toHexString(hashCode())
 

Returns
String a string representation of the object.

writeToParcel

Added in API level 21
void writeToParcel (Parcel dest, 
                int flags)

实现Parcelable接口。

Parameters
dest Parcel: The Parcel in which the object should be written.
flags int: Additional flags about how the object should be written. May be 0 or PARCELABLE_WRITE_RETURN_VALUE.

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