ScanFilter


public final class ScanFilter
extends Object implements Parcelable

java.lang.Object
   ↳ android.bluetooth.le.ScanFilter


Criteria for filtering result from Bluetooth LE scans. A ScanFilter allows clients to restrict scan results to only those that are of interest to them.

Current filtering on the following fields are supported:

  • Service UUIDs which identify the bluetooth gatt services running on the device.
  • Name of remote Bluetooth LE device.
  • Mac address of the remote device.
  • Service data which is the data associated with a service.
  • Manufacturer specific data which is the data associated with a particular manufacturer.
  • Advertising data type and corresponding data.

    Summary

    Nested classes

    class ScanFilter.Builder

    Builder class for ScanFilter

    Inherited constants

    Fields

    public static final Creator<ScanFilter> CREATOR

    A Parcelable.Creator to create ScanFilter from parcel.

    Public methods

    int describeContents()

    Describe the kinds of special objects contained in this Parcelable instance's marshaled representation.

    boolean equals(Object obj)

    Indicates whether some other object is "equal to" this one.

    byte[] getAdvertisingData()

    Returns the advertising data of this filter.

    byte[] getAdvertisingDataMask()

    Returns the advertising data mask of this filter.

    int getAdvertisingDataType()

    Returns the advertising data type of this filter.

    String getDeviceAddress()
    String getDeviceName()

    Returns the filter set the device name field of Bluetooth advertisement data.

    byte[] getManufacturerData()
    byte[] getManufacturerDataMask()
    int getManufacturerId()

    Returns the manufacturer id.

    byte[] getServiceData()
    byte[] getServiceDataMask()
    ParcelUuid getServiceDataUuid()
    ParcelUuid getServiceSolicitationUuid()

    Returns the filter set on the service Solicitation uuid.

    ParcelUuid getServiceSolicitationUuidMask()

    Returns the filter set on the service Solicitation uuid mask.

    ParcelUuid getServiceUuid()

    Returns the filter set on the service uuid.

    ParcelUuid getServiceUuidMask()
    int hashCode()

    Returns a hash code value for the object.

    boolean matches(ScanResult scanResult)

    Check if the scan filter matches a scanResult.

    String toString()

    Returns a string representation of the object.

    void writeToParcel(Parcel dest, int flags)

    Flatten this object in to a Parcel.

    Inherited methods

    Fields

    CREATOR

    Added in API level 21
    public static final Creator<ScanFilter> CREATOR

    A Parcelable.Creator to create ScanFilter from parcel.

    Public methods

    describeContents

    Added in API level 21
    public int describeContents ()

    Describe the kinds of special objects contained in this Parcelable instance's marshaled representation. For example, if the object will include a file descriptor in the output of writeToParcel(android.os.Parcel, int), the return value of this method must include the CONTENTS_FILE_DESCRIPTOR bit.

    Returns
    int a bitmask indicating the set of special object types marshaled by this Parcelable object instance. Value is either 0 or CONTENTS_FILE_DESCRIPTOR

    equals

    Added in API level 21
    public boolean equals (Object obj)

    Indicates whether some other object is "equal to" this one.

    The equals method implements an equivalence relation on non-null object references:

    • 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.

    An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

    Parameters
    obj Object: This value may be null.

    Returns
    boolean true if this object is the same as the obj argument; false otherwise.

    getAdvertisingData

    Added in API level 33
    public byte[] getAdvertisingData ()

    Returns the advertising data of this filter.

    Returns
    byte[] This value may be null.

    getAdvertisingDataMask

    Added in API level 33
    public byte[] getAdvertisingDataMask ()

    Returns the advertising data mask of this filter.

    Returns
    byte[] This value may be null.

    getAdvertisingDataType

    Added in API level 33
    public int getAdvertisingDataType ()

    Returns the advertising data type of this filter. Returns ScanRecord#DATA_TYPE_NONE if the type is not set. The values of advertising data type are defined in the Bluetooth Generic Access Profile (https://www.bluetooth.com/specifications/assigned-numbers/)

    Returns
    int Value is ScanRecord.DATA_TYPE_FLAGS, ScanRecord.DATA_TYPE_SERVICE_UUIDS_16_BIT_PARTIAL, ScanRecord.DATA_TYPE_SERVICE_UUIDS_16_BIT_COMPLETE, ScanRecord.DATA_TYPE_SERVICE_UUIDS_32_BIT_PARTIAL, ScanRecord.DATA_TYPE_SERVICE_UUIDS_32_BIT_COMPLETE, ScanRecord.DATA_TYPE_SERVICE_UUIDS_128_BIT_PARTIAL, ScanRecord.DATA_TYPE_SERVICE_UUIDS_128_BIT_COMPLETE, ScanRecord.DATA_TYPE_LOCAL_NAME_SHORT, ScanRecord.DATA_TYPE_LOCAL_NAME_COMPLETE, ScanRecord.DATA_TYPE_TX_POWER_LEVEL, ScanRecord.DATA_TYPE_CLASS_OF_DEVICE, ScanRecord.DATA_TYPE_SIMPLE_PAIRING_HASH_C, ScanRecord.DATA_TYPE_SIMPLE_PAIRING_RANDOMIZER_R, ScanRecord.DATA_TYPE_DEVICE_ID, ScanRecord.DATA_TYPE_SECURITY_MANAGER_OUT_OF_BAND_FLAGS, ScanRecord.DATA_TYPE_SLAVE_CONNECTION_INTERVAL_RANGE, ScanRecord.DATA_TYPE_SERVICE_SOLICITATION_UUIDS_16_BIT, ScanRecord.DATA_TYPE_SERVICE_SOLICITATION_UUIDS_128_BIT, ScanRecord.DATA_TYPE_SERVICE_DATA_16_BIT, ScanRecord.DATA_TYPE_PUBLIC_TARGET_ADDRESS, ScanRecord.DATA_TYPE_RANDOM_TARGET_ADDRESS, ScanRecord.DATA_TYPE_APPEARANCE, ScanRecord.DATA_TYPE_ADVERTISING_INTERVAL, ScanRecord.DATA_TYPE_LE_BLUETOOTH_DEVICE_ADDRESS, ScanRecord.DATA_TYPE_LE_ROLE, ScanRecord.DATA_TYPE_SIMPLE_PAIRING_HASH_C_256, ScanRecord.DATA_TYPE_SIMPLE_PAIRING_RANDOMIZER_R_256, ScanRecord.DATA_TYPE_SERVICE_SOLICITATION_UUIDS_32_BIT, ScanRecord.DATA_TYPE_SERVICE_DATA_32_BIT, ScanRecord.DATA_TYPE_SERVICE_DATA_128_BIT, ScanRecord.DATA_TYPE_LE_SECURE_CONNECTIONS_CONFIRMATION_VALUE, ScanRecord.DATA_TYPE_LE_SECURE_CONNECTIONS_RANDOM_VALUE, ScanRecord.DATA_TYPE_URI, ScanRecord.DATA_TYPE_INDOOR_POSITIONING, ScanRecord.DATA_TYPE_TRANSPORT_DISCOVERY_DATA, ScanRecord.DATA_TYPE_LE_SUPPORTED_FEATURES, ScanRecord.DATA_TYPE_CHANNEL_MAP_UPDATE_INDICATION, ScanRecord.DATA_TYPE_PB_ADV, ScanRecord.DATA_TYPE_MESH_MESSAGE, ScanRecord.DATA_TYPE_MESH_BEACON, ScanRecord.DATA_TYPE_BIG_INFO, ScanRecord.DATA_TYPE_BROADCAST_CODE, ScanRecord.DATA_TYPE_RESOLVABLE_SET_IDENTIFIER, ScanRecord.DATA_TYPE_ADVERTISING_INTERVAL_LONG, ScanRecord.DATA_TYPE_3D_INFORMATION_DATA, or ScanRecord.DATA_TYPE_MANUFACTURER_SPECIFIC_DATA

    getDeviceAddress

    Added in API level 21
    public String getDeviceAddress ()

    Returns
    String This value may be null.

    getDeviceName

    Added in API level 21
    public String getDeviceName ()

    Returns the filter set the device name field of Bluetooth advertisement data.

    Returns
    String This value may be null.

    getManufacturerData

    Added in API level 21
    public byte[] getManufacturerData ()

    Returns
    byte[] This value may be null.

    getManufacturerDataMask

    Added in API level 21
    public byte[] getManufacturerDataMask ()

    Returns
    byte[] This value may be null.

    getManufacturerId

    Added in API level 21
    public int getManufacturerId ()

    Returns the manufacturer id. -1 if the manufacturer filter is not set.

    Returns
    int

    getServiceData

    Added in API level 21
    public byte[] getServiceData ()

    Returns
    byte[] This value may be null.

    getServiceDataMask

    Added in API level 21
    public byte[] getServiceDataMask ()

    Returns
    byte[] This value may be null.

    getServiceDataUuid

    Added in API level 21
    public ParcelUuid getServiceDataUuid ()

    Returns
    ParcelUuid This value may be null.

    getServiceSolicitationUuid

    Added in API level 29
    public ParcelUuid getServiceSolicitationUuid ()

    Returns the filter set on the service Solicitation uuid.

    Returns
    ParcelUuid This value may be null.

    getServiceSolicitationUuidMask

    Added in API level 29
    public ParcelUuid getServiceSolicitationUuidMask ()

    Returns the filter set on the service Solicitation uuid mask.

    Returns
    ParcelUuid This value may be null.

    getServiceUuid

    Added in API level 21
    public ParcelUuid getServiceUuid ()

    Returns the filter set on the service uuid.

    Returns
    ParcelUuid This value may be null.

    getServiceUuidMask

    Added in API level 21
    public ParcelUuid getServiceUuidMask ()

    Returns
    ParcelUuid This value may be null.

    hashCode

    Added in API level 21
    public int hashCode ()

    Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by HashMap.

    The general contract of hashCode is:

    • 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 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 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.

    Returns
    int a hash code value for this object.

    matches

    Added in API level 21
    public boolean matches (ScanResult scanResult)

    Check if the scan filter matches a scanResult. A scan result is considered as a match if it matches all the field filters.

    Parameters
    scanResult ScanResult

    Returns
    boolean

    toString

    Added in API level 21
    public String toString ()

    Returns a string representation of the object.

    Returns
    String a string representation of the object.

    writeToParcel

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

    Flatten this object in to a Parcel.

    Parameters
    dest Parcel: The Parcel in which the object should be written. This value cannot be null.

    flags int: Additional flags about how the object should be written. May be 0 or Parcelable.PARCELABLE_WRITE_RETURN_VALUE. Value is either 0 or a combination of Parcelable.PARCELABLE_WRITE_RETURN_VALUE, and android.os.Parcelable.PARCELABLE_ELIDE_DUPLICATES