优化

app/src/main/java/io/legado/app/ui/book/read/config/ReadAloudDialog.kt

@@ -162,8 +162,12 @@ class ReadAloudDialog : BaseDialogFragment() {
     }
 
     private fun upTimerText(timeMinute: Int) {
+        if (timeMinute < 0) {
+            binding.tvTimer.text = requireContext().getString(R.string.timer_m, 0)
+        } else {
             binding.tvTimer.text = requireContext().getString(R.string.timer_m, timeMinute)
         }
+    }
 
     private fun upTtsSpeechRate() {
         ReadAloud.upTtsSpeechRate(requireContext())