Add handler to fix password freeze #226

app/src/main/java/com/kunzisoft/keepass/fingerprint/FingerPrintViewsManager.kt

@@ -5,6 +5,7 @@ import android.content.SharedPreferences
 import android.hardware.fingerprint.FingerprintManager
 import android.net.Uri
 import android.os.Build
+import android.os.Handler
 import android.support.annotation.RequiresApi
 import android.support.v7.app.AppCompatActivity
 import android.util.Log
@@ -31,6 +32,9 @@ class FingerPrintViewsManager(var context: AppCompatActivity,
     private var fingerprintMustBeConfigured = true
     private var fingerPrintMode: FingerPrintHelper.Mode = FingerPrintHelper.Mode.NOT_CONFIGURED_MODE
 
+    private var checkboxListenerHandler = Handler()
+    private var checkboxListenerRunnable: Runnable? = null
+
     // makes it possible to store passwords per database
     private val preferenceKeyValue: String
         get() = PREF_KEY_VALUE_PREFIX + (databaseFileUri?.path ?: "")
@@ -59,6 +63,10 @@ class FingerPrintViewsManager(var context: AppCompatActivity,
 
             // Add a check listener to change fingerprint mode
             checkboxPasswordView?.setOnCheckedChangeListener { compoundButton, checked ->
+
+                // New runnable to each change
+                checkboxListenerHandler.removeCallbacks(checkboxListenerRunnable)
+                checkboxListenerRunnable = Runnable {
                     if (!fingerprintMustBeConfigured) {
                         // encrypt or decrypt mode based on how much input or not
                         if (checked) {
@@ -72,6 +80,8 @@ class FingerPrintViewsManager(var context: AppCompatActivity,
                             }
                         }
                     }
+                }
+                checkboxListenerHandler.post(checkboxListenerRunnable)
 
                 // Add old listener to enable the button, only be call here because of onCheckedChange bug
                 onCheckedPasswordChangeListener?.onCheckedChanged(compoundButton, checked)