fix dismiss func

Author: Quoc Khanh

android/src/main/java/com/incomingcall/IncomingCallModule.java

@@ -62,7 +62,7 @@ public void dismiss() {
 
         // assert activity != null;
 
-        UnlockScreenActivity.fa.finish();
+        UnlockScreenActivity.dismissIncoming();
 
         return;
     }

android/src/main/java/com/incomingcall/UnlockScreenActivity.java

@@ -126,6 +126,12 @@ public void onBackPressed() {
         // Dont back
     }
 
+    public static void dismissIncoming() {
+        v.cancel();
+        player.stop();
+        this.finish();
+    }
+
     private void acceptDialing() {
         WritableMap params = Arguments.createMap();
         params.putBoolean("accept", true);