Made mediaPlayerHandler null safe

Signed-off-by: rapterjet2004 <juliuslinus1@gmail.com>

app/src/main/java/com/nextcloud/talk/chat/ChatActivity.kt

@@ -388,7 +388,7 @@ class ChatActivity :
     private var voicePreviewObjectAnimator: ObjectAnimator? = null
 
     var mediaPlayer: MediaPlayer? = null
-    lateinit var mediaPlayerHandler: Handler
+    var mediaPlayerHandler: Handler? = null
 
     private var currentlyPlayedVoiceMessage: ChatMessage? = null
 
@@ -605,10 +605,10 @@ class ChatActivity :
 
     override fun onSaveInstanceState(outState: Bundle) {
         if (currentlyPlayedVoiceMessage != null) {
-            outState.putString(CURRENT_AUDIO_MESSAGE_KEY, currentlyPlayedVoiceMessage!!.getId())
+            outState.putString(CURRENT_AUDIO_MESSAGE_KEY, currentlyPlayedVoiceMessage!!.id)
             outState.putInt(CURRENT_AUDIO_POSITION_KEY, currentlyPlayedVoiceMessage!!.voiceMessagePlayedSeconds)
             outState.putBoolean(CURRENT_AUDIO_WAS_PLAYING_KEY, currentlyPlayedVoiceMessage!!.isPlayingVoiceMessage)
-            Log.d(RESUME_AUDIO_TAG, "Stored current audio message ID: " + currentlyPlayedVoiceMessage!!.getId())
+            Log.d(RESUME_AUDIO_TAG, "Stored current audio message ID: " + currentlyPlayedVoiceMessage!!.id)
             Log.d(
                 RESUME_AUDIO_TAG,
                 "Audio Position: " + currentlyPlayedVoiceMessage!!.voiceMessagePlayedSeconds
@@ -2402,7 +2402,7 @@ class ChatActivity :
                             }
                         }
                     }
-                    mediaPlayerHandler.postDelayed(this, MILISEC_15)
+                    mediaPlayerHandler?.postDelayed(this, MILISEC_15)
                 }
             })
 
@@ -2476,7 +2476,7 @@ class ChatActivity :
         currentlyPlayedVoiceMessage = null
         lastRecordMediaPosition = 0 // this ensures that if audio track is changed, then it is played from the beginning
 
-        mediaPlayerHandler.removeCallbacksAndMessages(null)
+        mediaPlayerHandler?.removeCallbacksAndMessages(null)
 
         try {
             mediaPlayer?.let {
@@ -3484,7 +3484,7 @@ class ChatActivity :
             actionBar?.setIcon(null)
         }
 
-        currentlyPlayedVoiceMessage?.let { stopMediaPlayer(it) }
+        currentlyPlayedVoiceMessage?.let { stopMediaPlayer(it) } // FIXME, mediaplayer can sometimes be null here
 
         adapter = null
         Log.d(TAG, "inConversation was set to false!")
@@ -3913,7 +3913,7 @@ class ChatActivity :
                 } else {
                     Log.d(
                         RESUME_AUDIO_TAG,
-                        "voiceMessagePosition is -1, adapter # of items: " + adapter!!.getItemCount()
+                        "voiceMessagePosition is -1, adapter # of items: " + adapter!!.itemCount
                     )
                 }
             } else {
@@ -4575,7 +4575,8 @@ class ChatActivity :
 
     private fun showMicrophoneButton(show: Boolean) {
         if (show && CapabilitiesUtil.hasSpreedFeatureCapability(
-                spreedCapabilities, SpreedFeatures.VOICE_MESSAGE_SHARING
+                spreedCapabilities,
+                SpreedFeatures.VOICE_MESSAGE_SHARING
             )
         ) {
             Log.d(TAG, "Microphone shown")