From f9ebbe2f90d444fff0c4d2f8c292cd72074b2d6c Mon Sep 17 00:00:00 2001
From: H1Gdev <h1g.z.ouroboros+github@gmail.com>
Date: Wed, 11 Aug 2021 11:33:14 +0900
Subject: [PATCH] Fix MicrophoneHelper.

---
 .../com/google/mediapipe/components/MicrophoneHelper.java  | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/mediapipe/java/com/google/mediapipe/components/MicrophoneHelper.java b/mediapipe/java/com/google/mediapipe/components/MicrophoneHelper.java
index 4775bd7ee..d21724409 100644
--- a/mediapipe/java/com/google/mediapipe/components/MicrophoneHelper.java
+++ b/mediapipe/java/com/google/mediapipe/components/MicrophoneHelper.java
@@ -358,7 +358,6 @@ public class MicrophoneHelper implements AudioDataProducer {
    * Stops the AudioRecord object from reading data from the microphone.
    */
   public void stopMicrophoneWithoutCleanup() {
-    Preconditions.checkNotNull(audioRecord);
     if (!recording) {
       return;
     }
@@ -372,6 +371,7 @@ public class MicrophoneHelper implements AudioDataProducer {
       Log.e(TAG, "Exception: ", ie);
     }
 
+    Preconditions.checkNotNull(audioRecord);
     audioRecord.stop();
     if (audioRecord.getRecordingState() != AudioRecord.RECORDSTATE_STOPPED) {
       Log.e(TAG, "AudioRecord.stop() didn't run properly.");
@@ -382,11 +382,12 @@ public class MicrophoneHelper implements AudioDataProducer {
    * Releases the AudioRecord object when there is no ongoing recording.
    */
   public void cleanup() {
-    Preconditions.checkNotNull(audioRecord);
     if (recording) {
       return;
     }
-    audioRecord.release();
+    if (audioRecord != null) {
+      audioRecord.release();
+    }
   }
 
   @Override