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Added in API level 23

Summary: Ctors | Methods | Inherited Methods | [Expand All]

AudioRecord.Builder

public static class AudioRecord.Builder
extends Object

java.lang.Object
↳	android.media.AudioRecord.Builder

Builder class for AudioRecord objects. Use this class to configure and create an AudioRecord instance. By setting the recording source and audio format parameters, you indicate which of those vary from the default behavior on the device.

Here is an example where Builder is used to specify all AudioFormat parameters, to be used by a new AudioRecord instance:

 AudioRecord recorder = new AudioRecord.Builder()
         .setAudioSource(MediaRecorder.AudioSource.VOICE_COMMUNICATION)
         .setAudioFormat(new AudioFormat.Builder()
                 .setEncoding(AudioFormat.ENCODING_PCM_16BIT)
                 .setSampleRate(32000)
                 .setChannelMask(AudioFormat.CHANNEL_IN_MONO)
                 .build())
         .setBufferSize(2*minBuffSize)
         .build();

If the audio source is not set with setAudioSource(int), DEFAULT is used.
If the audio format is not specified or is incomplete, its channel configuration will be CHANNEL_IN_MONO, and the encoding will be ENCODING_PCM_16BIT. The sample rate will depend on the device actually selected for capture and can be queried with getSampleRate() method.
If the buffer size is not specified with setBufferSizeInBytes(int), the minimum buffer size for the source is used.

Summary

Public constructors
`AudioRecord.Builder()` Constructs a new Builder with the default values as described above.

Public methods
`AudioRecord`	`build()`
`AudioRecord.Builder`	`setAudioFormat(AudioFormat format)` Sets the format of the audio data to be captured.
`AudioRecord.Builder`	`setAudioSource(int source)`
`AudioRecord.Builder`	`setBufferSizeInBytes(int bufferSizeInBytes)` Sets the total size (in bytes) of the buffer where audio data is written during the recording.

Inherited methods

From class java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long millis, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long millis)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Public constructors