程序包 ohos.wifi

类 WifiScanInfo

java.lang.Object

ohos.wifi.WifiScanInfo

所有已实现的接口:

Sequenceable

public final class WifiScanInfo
extends Object
implements Sequenceable

Obtains detailed information of a Wi-Fi access point detected by Wi-Fi scanning.

This class provides the methods to store and convert the obtained Wi-Fi access point, and obtain its detailed information.

从以下版本开始:

1

嵌套类概要

从接口继承的嵌套类/接口 ohos.utils.Sequenceable

Sequenceable.Producer<T>

方法概要

限定符和类型	方法	说明
int	getBand()	Obtains the frequency band of a Wi-Fi access point.
int	getBandWidth()	Obtains the bandwidth of a Wi-Fi access point.
String	getBssid()	Obtains the BSSID of a Wi-Fi access point.
String	getCapabilities()	Obtains the capabilities of a Wi-Fi access point.
int[]	getCenterFrequencies()	Obtains the center frequencies of a hotspot that uses a WLAN channel with a width of 40 MHz, 80 MHz, or 160 MHz, or uses two non-overlapping WLAN channels, both with a width of 80 MHz.
int	getFrequency()	Obtains the center frequency of a hotspot that uses a WLAN channel with a width of 20 MHz
Map<Integer,byte[]>	getInformationElements()	Obtains the information elements in the beacon.
int	getRssi()	Obtains the RSSI of a Wi-Fi access point.
int	getSecurityType()	Obtains the encryption mode of a Wi-Fi access point.
String	getSsid()	Obtains the SSID of a Wi-Fi access point.
long	getTimestamp()	Obtains the timestamp of the latest detection of a Wi-Fi hotspot.
boolean	marshalling(Parcel out)	Writes a Sequenceable object into a Parcel for scan info.
String	toString()	Returns a string representation of the object.
boolean	unmarshalling(Parcel in)	Restores a Sequenceable object from a Parcel for scan info.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

从接口继承的方法 ohos.utils.Sequenceable

hasFileDescriptor

方法详细资料

marshalling

public boolean marshalling(Parcel out)

Writes a Sequenceable object into a Parcel for scan info.

指定者:

marshalling 在接口中 Sequenceable

参数:

out - Indicates the Parcel object to which the Sequenceable object will be written.

返回:

Returns true if the marshalling is successful; returns false otherwise.

从以下版本开始:

1

unmarshalling

public boolean unmarshalling(Parcel in)

Restores a Sequenceable object from a Parcel for scan info.

指定者:

unmarshalling 在接口中 Sequenceable

参数:

in - Indicates the Parcel object into which the Sequenceable object has been written.

返回:

Returns true if the unmarshalling is successful; returns false otherwise.

从以下版本开始:

1

getSsid

public String getSsid()

Obtains the SSID of a Wi-Fi access point.

The SSID is in UTF-8 format.

A valid SSID must contain less than 32 ASCII characters.

返回:

Returns the SSID of the Wi-Fi access point.

从以下版本开始:

1

getBssid

public String getBssid()

Obtains the BSSID of a Wi-Fi access point.

BSSID represents the physical address of the Wi-Fi access point.

返回:

Returns the BSSID of the Wi-Fi access point.

从以下版本开始:

1

getCapabilities

public String getCapabilities()

Obtains the capabilities of a Wi-Fi access point.

The capabilities include the verification information and encryption algorithms of the Wi-Fi access point.

The capabilities consist of a series of tags separated by []. For example, [WPA2-EAP-CCMP][RSN-EAP-CCMP].

返回:

Returns the capabilities of the Wi-Fi access point.

从以下版本开始:

1

getSecurityType

public int getSecurityType()

Obtains the encryption mode of a Wi-Fi access point.

An example encryption mode is WifiSecurity#PSK.

返回:

Returns the encryption mode of the Wi-Fi access point.

从以下版本开始:

1

另请参阅:

WifiSecurity.PSK

getRssi

public int getRssi()

Obtains the RSSI of a Wi-Fi access point.

The unit of RSSI is dBm.

You can use the WifiDevice#getSignalLevel(int, int) method to obtain a clearer signal level.

返回:

Returns the RSSI of the Wi-Fi access point.

从以下版本开始:

1

getBand

public int getBand()

Obtains the frequency band of a Wi-Fi access point.

The frequency band can be 2.4 GHz WifiEvents#BAND_WIFI_2G or 5 GHz WifiEvents#BAND_WIFI_5G.

返回:

Returns the frequency band of the Wi-Fi access point; returns WifiEvents#BAND_INVALID if the frequency band is invalid.

从以下版本开始:

1

getBandWidth

public int getBandWidth()

Obtains the bandwidth of a Wi-Fi access point.

Five bandwidth types are available:

• 20 MHz bandwidth WifiEvents#BAND_WIDTH_20MHZ
• 40 MHz bandwidth WifiEvents#BAND_WIDTH_40MHZ
• 80 MHz bandwidth WifiEvents#BAND_WIDTH_80MHZ
• 160 MHz bandwidth WifiEvents#BAND_WIDTH_160MHZ
• 80 MHz + 80 MHz bandwidth WifiEvents#BAND_WIDTH_80MHZ_PLUS

返回:

Returns the bandwidth of the Wi-Fi access point.

从以下版本开始:

1

getFrequency

public int getFrequency()

Obtains the center frequency of a hotspot that uses a WLAN channel with a width of 20 MHz

返回:

Returns the center frequency

从以下版本开始:

5

getCenterFrequencies

public int[] getCenterFrequencies()

Obtains the center frequencies of a hotspot that uses a WLAN channel with a width of 40 MHz, 80 MHz, or 160 MHz, or uses two non-overlapping WLAN channels, both with a width of 80 MHz.

返回:

Returns the center frequency matching the width of 40 MHz, 80 MHz, or 160 MHz and the invalid value 0; returns two center frequencies if the hotspot uses two non-overlapping WLAN channels, both with a width of 80 MHz

从以下版本开始:

5

getTimestamp

public long getTimestamp()

Obtains the timestamp of the latest detection of a Wi-Fi hotspot.

The unit is ms.

返回:

Returns the timestamp of the latest detection of the Wi-Fi hotspot.

从以下版本开始:

1

getInformationElements

public Map<Integer,byte[]> getInformationElements()

Obtains the information elements in the beacon.

返回:

Returns the information elements in the beacon.

从以下版本开始:

3

toString

public String toString()

从类复制的说明: Object

Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of:

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

覆盖:

toString 在类中 Object

返回:

a string representation of the object.