fixed several async operation listeners, assigned to static objects, not being cleared after the end of the operation

app/src/main/java/io/github/sspanak/tt9/db/customWords/CustomWordsImporter.java

@@ -48,6 +48,13 @@ public class CustomWordsImporter extends AbstractFileProcessor {
 	}
 
 
+	public void clearAllHandlers() {
+		failureHandler = null;
+		progressHandler = null;
+		successHandler = null;
+	}
+
+
 	public void setProgressHandler(ConsumerCompat<Integer> handler) {
 		progressHandler = handler;
 	}
@@ -71,6 +78,7 @@ public class CustomWordsImporter extends AbstractFileProcessor {
 	protected void sendSuccess() {
 		if (successHandler != null) {
 			successHandler.accept(file.getName());
+			clearAllHandlers();
 		}
 	}
 
@@ -78,6 +86,7 @@ public class CustomWordsImporter extends AbstractFileProcessor {
 	private void sendFailure(String errorMessage) {
 		if (failureHandler != null) {
 			failureHandler.accept(errorMessage);
+			clearAllHandlers();
 		}
 	}
 

app/src/main/java/io/github/sspanak/tt9/db/words/DictionaryDeleter.java

@@ -58,10 +58,7 @@ public class DictionaryDeleter extends BaseSyncStore {
 		}
 
 		deleteTask = null;
-
-		if (notification != null) {
-			notification.run();
-		}
+		onFinish();
 
 		Logger.d(LOG_TAG, "Deleted " + languages.size() + " languages. Time: " + Timer.stop(LOG_TAG) + " ms");
 	}
@@ -91,6 +88,7 @@ public class DictionaryDeleter extends BaseSyncStore {
 	private void onFinish() {
 		if (notification != null) {
 			notification.run();
+			notification = null;
 		}
 	}
 

app/src/main/java/io/github/sspanak/tt9/db/words/DictionaryLoader.java

@@ -350,7 +350,12 @@ public class DictionaryLoader {
 		progressMsg.putLong("time", Timer.get(IMPORT_TIMER));
 		progressMsg.putInt("progress", Math.round(progress));
 		progressMsg.putInt("currentFile", currentFile);
-		asyncHandler.post(() -> onStatusChange.accept(progressMsg));
+		asyncHandler.post(() -> {
+			onStatusChange.accept(progressMsg);
+			if (progress >= 100) {
+				onStatusChange = null;
+			}
+		});
 	}
 
 
@@ -363,7 +368,10 @@ public class DictionaryLoader {
 		Bundle errorMsg = new Bundle();
 		errorMsg.putString("error", message);
 		errorMsg.putInt("languageId", langId);
-		asyncHandler.post(() -> onStatusChange.accept(errorMsg));
+		asyncHandler.post(() -> {
+			onStatusChange.accept(errorMsg);
+			onStatusChange = null;
+		});
 	}
 
 
@@ -377,7 +385,10 @@ public class DictionaryLoader {
 		errorMsg.putString("error", message);
 		errorMsg.putLong("fileLine", fileLine + 1);
 		errorMsg.putInt("languageId", langId);
-		asyncHandler.post(() -> onStatusChange.accept(errorMsg));
+		asyncHandler.post(() -> {
+			onStatusChange.accept(errorMsg);
+			onStatusChange = null;
+		});
 	}
 
 

app/src/main/java/io/github/sspanak/tt9/ime/TextEditingHandler.java

@@ -110,7 +110,7 @@ abstract public class TextEditingHandler extends VoiceHandler {
 			mainView.showCommandPalette();
 		}
 
-		Clipboard.setOnChangeListener(this, null);
+		Clipboard.clearListener(this);
 		resetStatus();
 		return true;
 	}

app/src/main/java/io/github/sspanak/tt9/ime/TraditionalT9.java

@@ -22,6 +22,7 @@ import io.github.sspanak.tt9.preferences.settings.SettingsStore;
 import io.github.sspanak.tt9.ui.UI;
 import io.github.sspanak.tt9.ui.dialogs.RequestPermissionDialog;
 import io.github.sspanak.tt9.util.Logger;
+import io.github.sspanak.tt9.util.sys.Clipboard;
 import io.github.sspanak.tt9.util.sys.DeviceInfo;
 import io.github.sspanak.tt9.util.sys.SystemSettings;
 
@@ -174,6 +175,7 @@ public class TraditionalT9 extends MainViewHandler {
 		stopVoiceInput();
 		onFinishTyping();
 		suggestionOps.clear();
+		Clipboard.clearListener(this);
 		statusBar.setText(mInputMode);
 
 		if (isInputViewShown()) {

app/src/main/java/io/github/sspanak/tt9/util/sys/Clipboard.java

@@ -65,6 +65,10 @@ public class Clipboard {
 		externalChangeListener = newListener;
 	}
 
+	public static void clearListener(Context context) {
+		setOnChangeListener(context, null);
+	}
+
 	private static void changeListener() {
 		if (ignoreNextChange) {
 			ignoreNextChange = false;