com.polidea.rxandroidble2.helpers

Class ValueInterpreter

java.lang.Object

com.polidea.rxandroidble2.helpers.ValueInterpreter

public class ValueInterpreter
extends java.lang.Object

A helper class intended for interpreting Integers, Floats and Strings that may be stored in byte arrays retrieved by RxBleConnection.readCharacteristic(UUID) or RxBleConnection.setupIndication(UUID). If the data in emitted byte arrays is stored using a standardised Bluetooth Specification format This class is a copied from BluetoothGattCharacteristic.getIntValue(int, int), BluetoothGattCharacteristic.getFloatValue(int, int) and BluetoothGattCharacteristic.getStringValue(int)

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	ValueInterpreter.FloatFormatType
static interface	ValueInterpreter.IntFormatType

Field Summary

Fields

Modifier and Type	Field and Description
static int	FORMAT_FLOAT Characteristic value format type float (32-bit float)
static int	FORMAT_SFLOAT Characteristic value format type sfloat (16-bit float)
static int	FORMAT_SINT16 Characteristic value format type sint16
static int	FORMAT_SINT32 Characteristic value format type sint32
static int	FORMAT_SINT8 Characteristic value format type sint8
static int	FORMAT_UINT16 Characteristic value format type uint16
static int	FORMAT_UINT32 Characteristic value format type uint32
static int	FORMAT_UINT8 Characteristic value format type uint8

Method Summary

Modifier and Type	Method and Description
static java.lang.Float	getFloatValue(byte[] value, int formatType, int offset) Return the float value interpreted from the passed byte array.
static java.lang.Integer	getIntValue(byte[] value, int formatType, int offset) Return the integer value interpreted from the passed byte array.
static java.lang.String	getStringValue(byte[] value, int offset) Return the string value interpreted from the passed byte array.

Methods inherited from class java.lang.Object

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

Field Detail

FORMAT_UINT8

public static final int FORMAT_UINT8

Characteristic value format type uint8

See Also:

Constant Field Values

FORMAT_UINT16

public static final int FORMAT_UINT16

Characteristic value format type uint16

See Also:

Constant Field Values

FORMAT_UINT32

public static final int FORMAT_UINT32

Characteristic value format type uint32

See Also:

Constant Field Values

FORMAT_SINT8

public static final int FORMAT_SINT8

Characteristic value format type sint8

See Also:

Constant Field Values

FORMAT_SINT16

public static final int FORMAT_SINT16

Characteristic value format type sint16

See Also:

Constant Field Values

FORMAT_SINT32

public static final int FORMAT_SINT32

Characteristic value format type sint32

See Also:

Constant Field Values

FORMAT_SFLOAT

public static final int FORMAT_SFLOAT

Characteristic value format type sfloat (16-bit float)

See Also:

Constant Field Values

FORMAT_FLOAT

public static final int FORMAT_FLOAT

Characteristic value format type float (32-bit float)

See Also:

Constant Field Values

Method Detail

getIntValue

public static java.lang.Integer getIntValue(byte[] value,
                                            int formatType,
                                            int offset)

Return the integer value interpreted from the passed byte array.

The formatType parameter determines how the value is to be interpreted. For example, setting formatType to FORMAT_UINT16 specifies that the first two bytes of the characteristic value at the given offset are interpreted to generate the return value.

Parameters:

value - The byte array from which to interpret value.

formatType - The format type used to interpret the value.

offset - Offset at which the integer value can be found.

Returns:

The value at a given offset or null if offset exceeds value size.

getFloatValue

public static java.lang.Float getFloatValue(byte[] value,
                                            int formatType,
                                            int offset)

Return the float value interpreted from the passed byte array.

Parameters:

value - The byte array from which to interpret value.

formatType - The format type used to interpret the value.

offset - Offset at which the float value can be found.

Returns:

The value at a given offset or null if the requested offset exceeds the value size.

getStringValue

public static java.lang.String getStringValue(byte[] value,
                                              int offset)

Return the string value interpreted from the passed byte array.

Parameters:

offset - Offset at which the string value can be found.

Returns:

The value at a given offset