joon623 / audiorecordview

A flexible, efficient library written in Kotlin for drawing real wave forms while recording. Free, easy and convenient to use.

AudioRecordView

Audio visualizer that can be used during sound recording

How to include?

Add the repository to your project build.gradle:

allprojects {
    repositories {
        ...
        maven { url 'https://jitpack.io' }
    }
}

And add the library to your module build.gradle:

dependencies {
  implementation 'com.github.Armen101:AudioRecordView:1.0.5'
}

Or Maven

<dependency>
  <groupId>com.github.Armen101</groupId>
  <artifactId>AudioRecordView</artifactId>
  <version>1.0.5</version>
</dependency>

How do I use AudioRecordView?

in XML

<com.visualizer.amplitude.AudioRecordView
        android:id="@+id/audioRecordView"
        android:layout_width="256dp"
        android:layout_height="64dp"
        app:chunkAlignTo="bottom"                                  
        app:chunkRoundedCorners="true"
        app:chunkSoftTransition="true"                                  
        app:chunkColor="@color/app_style_blue"
        app:chunkSpace="1dp"
        app:chunkWidth="2dp"
        app:chunkMaxHeight="48dp"
        app:chunkMinHeight="2dp"
        app:direction="leftToRight"/>

Drawing

You can execute this code in a timer, for example, every 100 milliseconds

 val audioRecordView: AudioRecordView = findViewById(R.id.audioRecordView)
 
 // in the timer
 val currentMaxAmplitude = getMediaRecorder().getMaxAmplitude()
 audioRecordView.update(currentMaxAmplitude)   //redraw view

At the end or before reuse

audioRecordView.recreate()

Compatibility

Minimum Android SDK: AudioRecordView requires a minimum API level of 16.

Also you can see

Sample project in github

Tutorial in Medium

License

Apache 2.0. See the LICENSE. file for details.

Author Armen Gevorgyan