Added in [API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) Summary: [Ctors](https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel.Builder#pubctors) \| [Methods](https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel.Builder#pubmethods) \| [Inherited Methods](https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel.Builder#inhmethods)

# UwbComplexChannel.Builder

*** ** * ** ***

` public static final class UwbComplexChannel.Builder `   
` extends https://developer.android.com/reference/java/lang/Object ` ` `

|---|---|
| [java.lang.Object](https://developer.android.com/reference/java/lang/Object) ||
| ↳ | android.ranging.uwb.UwbComplexChannel.Builder |

<br />

*** ** * ** ***

Builder for creating instances of `https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel`.

## Summary

| ### Public constructors ||
|---|---|
| ` https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel.Builder#Builder()() ` |

### Public methods

` https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel` ` https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel.Builder#build()() `

Builds and returns a new instance of `https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel`.
` https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel.Builder` ` https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel.Builder#setChannel(int)(int channel) `

Sets the channel for the ranging device.
` https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel.Builder` ` https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel.Builder#setPreambleIndex(int)(int preambleIndex) `

Sets the preamble index for the ranging device as defined in See [](https://groups.firaconsortium.org/wg/members/document/1949> FiRa UCI
Spec.


</p>

</td>
</tr>


</table>


<!-- ========== METHOD SUMMARY =========== -->
<table id=)

### Inherited methods

From class ` https://developer.android.com/reference/java/lang/Object ` ` https://developer.android.com/reference/java/lang/Object` ` https://developer.android.com/reference/java/lang/Object#clone()() `

Creates and returns a copy of this object.
` boolean` ` https://developer.android.com/reference/java/lang/Object#equals(java.lang.Object)(https://developer.android.com/reference/java/lang/Object obj) `

Indicates whether some other object is "equal to" this one.
` void` ` https://developer.android.com/reference/java/lang/Object#finalize()() `

Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
` final https://developer.android.com/reference/java/lang/Class<?>` ` https://developer.android.com/reference/java/lang/Object#getClass()() `

Returns the runtime class of this `Object`.
` int` ` https://developer.android.com/reference/java/lang/Object#hashCode()() `

Returns a hash code value for the object.
` final void` ` https://developer.android.com/reference/java/lang/Object#notify()() `

Wakes up a single thread that is waiting on this object's monitor.
` final void` ` https://developer.android.com/reference/java/lang/Object#notifyAll()() `

Wakes up all threads that are waiting on this object's monitor.
` https://developer.android.com/reference/java/lang/String` ` https://developer.android.com/reference/java/lang/Object#toString()() `

Returns a string representation of the object.
` final void` ` https://developer.android.com/reference/java/lang/Object#wait(long,%20int)(long timeoutMillis, int nanos) `

Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed.
` final void` ` https://developer.android.com/reference/java/lang/Object#wait(long)(long timeoutMillis) `

Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed.
` final void` ` https://developer.android.com/reference/java/lang/Object#wait()() `

Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*.

## Public constructors

### Builder

Added in [API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public Builder ()
```

<br />

<br />

## Public methods

### build

Added in [API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public UwbComplexChannel build ()
```

Builds and returns a new instance of `https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel`.

<br />

| Returns ||
|---|---|
| `https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel` | A new `https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel` instance. This value cannot be `null`. <br /> |

### setChannel

Added in [API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public UwbComplexChannel.Builder setChannel (int channel)
```

Sets the channel for the ranging device.

Defaults to `https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel#UWB_CHANNEL_5`

<br />

| Parameters ||
|---|---|
| `channel` | `int`: The channel number to be set. <br /> |

| Returns ||
|---|---|
| `https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel.Builder` | This `https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel.Builder` instance. This value cannot be `null`. <br /> |

### setPreambleIndex

Added in [API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public UwbComplexChannel.Builder setPreambleIndex (int preambleIndex)
```

Sets the preamble index for the ranging device as defined in See [](https://groups.firaconsortium.org/wg/members/document/1949> FiRa UCI
Spec.</a>}
<p> PRF (Pulse Repetition Frequency) is selected based on the preamble index set here.

<p> Defaults to a random BPRF preamble index.
One among <code translate=)[UwbComplexChannel.UWB_PREAMBLE_CODE_INDEX_9](https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel#UWB_PREAMBLE_CODE_INDEX_9), `https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel#UWB_PREAMBLE_CODE_INDEX_10`, `https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel#UWB_PREAMBLE_CODE_INDEX_11` or `https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel#UWB_PREAMBLE_CODE_INDEX_12`. For better performance always use a random preamble index for each ranging session.

<br />

| Parameters ||
|---|---|
| `preambleIndex` | `int`: The preamble index to be set. <br /> |

| Returns ||
|---|---|
| `https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel.Builder` | This `https://developer.android.com/reference/android/ranging/uwb/UwbComplexChannel.Builder` instance. This value cannot be `null`. <br /> |