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Added in API level 21

ScanFilter

public final class ScanFilter
extends Object implements Parcelable

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


蓝牙LE扫描过滤结果的标准。 A ScanFilter允许客户将扫描结果限制为仅对他们感兴趣的扫描结果。

对以下字段的当前过滤受支持:

  • 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.

    也可以看看:

    Summary

    Nested classes

    class ScanFilter.Builder

    Builder类为ScanFilter

    Inherited constants

    From interface android.os.Parcelable

    Fields

    public static final Creator<ScanFilter> CREATOR

    A Parcelable.Creator从包裹创建 ScanFilter

    Public methods

    int describeContents()

    描述此Parcelable实例的封送表示中包含的特殊对象的种类。

    boolean equals(Object obj)

    指示其他某个对象是否“等于”这一个。

    String getDeviceAddress()
    String getDeviceName()

    返回过滤器设置蓝牙广告数据的设备名称字段。

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

    返回制造商ID。

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

    返回服务uuid上设置的过滤器。

    ParcelUuid getServiceUuidMask()
    int hashCode()

    返回对象的哈希码值。

    boolean matches(ScanResult scanResult)

    检查扫描过滤器是否与 scanResult匹配。

    String toString()

    返回对象的字符串表示形式。

    void writeToParcel(Parcel dest, int flags)

    将此对象平铺到一个包裹中。

    Inherited methods

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

    Fields

    CREATOR

    Added in API level 21
    Creator<ScanFilter> CREATOR

    A Parcelable.Creator从包裹创建 ScanFilter

    Public methods

    describeContents

    Added in API level 21
    int describeContents ()

    描述此Parcelable实例的封送表示中包含的特殊对象的种类。 例如,如果对象将在writeToParcel(Parcel, int)的输出中包含writeToParcel(Parcel, int) ,则此方法的返回值必须包含CONTENTS_FILE_DESCRIPTOR位。

    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.

    equals方法Object实现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,以维护 hashCode方法的一般合同,该方法声明相等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.

    getDeviceAddress

    Added in API level 21
    String getDeviceAddress ()

    Returns
    String

    getDeviceName

    Added in API level 21
    String getDeviceName ()

    返回过滤器设置蓝牙广告数据的设备名称字段。

    Returns
    String

    getManufacturerData

    Added in API level 21
    byte[] getManufacturerData ()

    Returns
    byte[]

    getManufacturerDataMask

    Added in API level 21
    byte[] getManufacturerDataMask ()

    Returns
    byte[]

    getManufacturerId

    Added in API level 21
    int getManufacturerId ()

    返回制造商ID。 -1如果制造商过滤器没有设置。

    Returns
    int

    getServiceData

    Added in API level 21
    byte[] getServiceData ()

    Returns
    byte[]

    getServiceDataMask

    Added in API level 21
    byte[] getServiceDataMask ()

    Returns
    byte[]

    getServiceDataUuid

    Added in API level 21
    ParcelUuid getServiceDataUuid ()

    Returns
    ParcelUuid

    getServiceUuid

    Added in API level 21
    ParcelUuid getServiceUuid ()

    返回服务uuid上设置的过滤器。

    Returns
    ParcelUuid

    getServiceUuidMask

    Added in API level 21
    ParcelUuid getServiceUuidMask ()

    Returns
    ParcelUuid

    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,例如由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,由类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.

    matches

    Added in API level 21
    boolean matches (ScanResult scanResult)

    检查扫描过滤器是否与scanResult匹配。 如果扫描结果与所有字段过滤器匹配,则将其视为匹配。

    Parameters
    scanResult ScanResult
    Returns
    boolean

    toString

    Added in API level 21
    String toString ()

    返回对象的字符串表示形式。 通常, toString方法会返回一个“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。

    toString方法Object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)

    将此对象平铺到一个包裹中。

    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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