tts: do not re-initialize TTS on DCMD_TTS_PLAY if its already active

Author: teleshoes

android/src/org/coolreader/crengine/ReaderView.java

@@ -2414,13 +2414,15 @@ public void onCommand(final ReaderCommand cmd, final int param, final Runnable o
 				showManual();
 				break;
 			case DCMD_TTS_PLAY: {
-				log.i("DCMD_TTS_PLAY: initializing TTS");
-				mActivity.initTTS(ttsacc -> BackgroundThread.instance().executeGUI(() -> {
-					log.i("TTS created: opening TTS toolbar");
-					ttsToolbar = TTSToolbarDlg.showDialog(mActivity, ReaderView.this, ttsacc);
-					ttsToolbar.setOnCloseListener(() -> ttsToolbar = null);
-					ttsToolbar.setAppSettings(mSettings, null);
-				}));
+				if(!isTTSActive()){
+					log.i("DCMD_TTS_PLAY: initializing TTS");
+					mActivity.initTTS(ttsacc -> BackgroundThread.instance().executeGUI(() -> {
+						log.i("TTS created: opening TTS toolbar");
+						ttsToolbar = TTSToolbarDlg.showDialog(mActivity, ReaderView.this, ttsacc);
+						ttsToolbar.setOnCloseListener(() -> ttsToolbar = null);
+						ttsToolbar.setAppSettings(mSettings, null);
+					}));
+				}
 			}
 			break;
 			case DCMD_TOGGLE_DOCUMENT_STYLES: