recordView.setOnStartRecording(new AudioRecorderView.OnStartRecordingListener() {
    @Override
    public void onStartRecording() {
        ...
    }
});
// or with java 8+
recordView.setOnStartRecording(() -> {
    ...
});


recordView.setOnFinishRecord(new AudioRecorderView.OnFinishRecordListener() {
    @Override
    public void onFinishRecordListener(@NotNull File file) {
        ...
    }
});
// or with java 8+
recordView.setOnFinishRecord(file -> {
    ...
});


recordView.setOnPlay(new AudioRecorderView.OnPlayListener() {
    @Override
    public void onPlay() {
        ...
    }
});
// or with java 8+
recordView.setOnPlay(() -> {
    ...
});


recordView.setOnPause(new AudioRecorderView.OnPauseListener() {
    @Override
    public void onPause() {
        ...
    }
});
// or with java 8+
recordView.setOnPause(() -> {
    ...
});


recordView.setOnResume(new AudioRecorderView.OnResumeListener() {
    @Override
    public void onResume() {
        ...
    }
});
// or with java 8+
recordView.setOnResume(() -> {
    ...
});


recordView.setOnFinishPlay(new AudioRecorderView.OnFinishPlayListener() {
    @Override
    public void onFinishPlayListener() {
        ...
    }
});
// or with java 8+
recordView.setOnFinishPlay() -> {
    ...
});


recordView.setOnDelete(new AudioRecorderView.OnDeleteListener() {
    @Override
    public void onDelete() {
        ...
    }
});
// or with java 8+
recordView.setOnDelete() -> {
    ...
});