From 0dcd0735545a9d5555b4090262db89b7413c385e Mon Sep 17 00:00:00 2001
From: topjohnwu <topjohnwu@gmail.com>
Date: Sat, 13 Jan 2018 05:49:47 +0800
Subject: [PATCH] Fix crashes on Lollipop

---
 .../magisk/utils/FingerprintHelper.java       | 32 +++++++++++++++++--
 1 file changed, 30 insertions(+), 2 deletions(-)

diff --git a/src/main/java/com/topjohnwu/magisk/utils/FingerprintHelper.java b/src/main/java/com/topjohnwu/magisk/utils/FingerprintHelper.java
index f9a961f7e..1808f06e5 100644
--- a/src/main/java/com/topjohnwu/magisk/utils/FingerprintHelper.java
+++ b/src/main/java/com/topjohnwu/magisk/utils/FingerprintHelper.java
@@ -18,7 +18,7 @@ import javax.crypto.KeyGenerator;
 import javax.crypto.SecretKey;
 
 @TargetApi(Build.VERSION_CODES.M)
-public abstract class FingerprintHelper extends FingerprintManager.AuthenticationCallback {
+public abstract class FingerprintHelper {
 
     private FingerprintManager manager;
     private Cipher cipher;
@@ -54,10 +54,38 @@ public abstract class FingerprintHelper extends FingerprintManager.Authenticatio
         }
     }
 
+    public abstract void onAuthenticationError(int errorCode, CharSequence errString);
+
+    public abstract void onAuthenticationHelp(int helpCode, CharSequence helpString);
+
+    public abstract void onAuthenticationSucceeded(FingerprintManager.AuthenticationResult result);
+
+    public abstract void onAuthenticationFailed();
+
     public void startAuth() {
         cancel = new CancellationSignal();
         FingerprintManager.CryptoObject cryptoObject = new FingerprintManager.CryptoObject(cipher);
-        manager.authenticate(cryptoObject, cancel, 0, this, null);
+        manager.authenticate(cryptoObject, cancel, 0, new FingerprintManager.AuthenticationCallback() {
+            @Override
+            public void onAuthenticationError(int errorCode, CharSequence errString) {
+                FingerprintHelper.this.onAuthenticationError(errorCode, errString);
+            }
+
+            @Override
+            public void onAuthenticationHelp(int helpCode, CharSequence helpString) {
+                FingerprintHelper.this.onAuthenticationHelp(helpCode, helpString);
+            }
+
+            @Override
+            public void onAuthenticationSucceeded(FingerprintManager.AuthenticationResult result) {
+                FingerprintHelper.this.onAuthenticationSucceeded(result);
+            }
+
+            @Override
+            public void onAuthenticationFailed() {
+                FingerprintHelper.this.onAuthenticationFailed();
+            }
+        }, null);
     }
 
     public void cancel() {