From e71850120b174112472fc61170b165caf717ff22 Mon Sep 17 00:00:00 2001
From: Eugen Melnychenko <eugen.melnychenko@gmail.com>
Date: Fri, 25 Oct 2019 13:05:39 +0300
Subject: [PATCH] #151: Attempt to invoke virtual method 'boolean
 android.hardware.fingerprint.FingerprintManager.isHardwareDetected()' on a
 null object reference

- Added null check at every place where mFingerPrintManager used to prevent "boolean android.hardware.fingerprint.FingerprintManager.isHardwareDetected()' on a null object reference"
---
 src/android/Fingerprint.java | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/android/Fingerprint.java b/src/android/Fingerprint.java
index f36c57fb..8319ab39 100644
--- a/src/android/Fingerprint.java
+++ b/src/android/Fingerprint.java
@@ -252,7 +252,7 @@ public void run() {
                 mCallbackContext.sendPluginResult(mPluginResult);
             }
             return true;
-        } else if (action.equals("isAvailable")) {
+        } else if (action.equals("isAvailable") && null != mFingerPrintManager) {
             if(mFingerPrintManager.isHardwareDetected() && mFingerPrintManager.hasEnrolledFingerprints()){
                 mPluginResult = new PluginResult(PluginResult.Status.OK, "finger");
                 mCallbackContext.success("finger");
@@ -272,7 +272,8 @@ public void run() {
     }
 
     private boolean isFingerprintAuthAvailable() {
-        return mFingerPrintManager.isHardwareDetected()
+        return null != mFingerPrintManager
+                && mFingerPrintManager.isHardwareDetected()
                 && mFingerPrintManager.hasEnrolledFingerprints();
     }