another attempt to fix the 'priviliged options' problem

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

@@ -21,6 +21,7 @@ abstract public class AbstractHandler extends InputMethodService {
 	abstract protected boolean onStart(InputConnection inputConnection, EditorInfo inputField);
 	abstract protected void onFinishTyping();
 	abstract protected void onStop();
+	abstract protected void onDeath();
 	abstract protected void setInputField(InputConnection inputConnection, EditorInfo inputField);
 
 	// UI

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

@@ -103,6 +103,7 @@ abstract public class CommandHandler extends TextEditingHandler {
 		suggestionOps.cancelDelayedAccept();
 		stopVoiceInput();
 		UI.showChangeKeyboardDialog(this);
+		onDeath();
 	}
 
 

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

@@ -17,10 +17,12 @@ import io.github.sspanak.tt9.preferences.settings.SettingsStore;
 import io.github.sspanak.tt9.ui.UI;
 import io.github.sspanak.tt9.ui.dialogs.PopupDialog;
 import io.github.sspanak.tt9.util.Logger;
+import io.github.sspanak.tt9.util.SystemSettings;
 
 public class TraditionalT9 extends MainViewHandler {
 	@NonNull
 	private final Handler normalizationHandler = new Handler(Looper.getMainLooper());
+	private final Handler deathDetector = new Handler(Looper.getMainLooper());
 
 
 	@Override
@@ -116,6 +118,8 @@ public class TraditionalT9 extends MainViewHandler {
 
 	@Override
 	protected boolean onStart(InputConnection connection, EditorInfo field) {
+		deathDetector.removeCallbacksAndMessages(null);
+
 		if (!super.onStart(connection, field)) {
 			return false;
 		}
@@ -157,6 +161,33 @@ public class TraditionalT9 extends MainViewHandler {
 	}
 
 
+	/**
+	 * On Android 11 the IME is sometimes not killed when the user switches to a different one.
+	 * Here we attempt to detect if we are disabled, then hide and kill ourselves.
+	 */
+	protected void onDeath() {
+		if (SystemSettings.isTT9Active(this)) {
+			Logger.w("onDeath", "===> Still active, rescheduling");
+			deathDetector.postDelayed(this::onDeath, 2000);
+			return;
+		} else {
+			deathDetector.removeCallbacksAndMessages(null);
+		}
+
+		Logger.w("onDeath", "===> Killing self");
+		requestHideSelf(0);
+		onStop();
+		stopSelf();
+	}
+
+
+	@Override
+	public void onDestroy() {
+		super.onDestroy();
+		onDeath();
+	}
+
+
 	@Override
 	protected boolean onNumber(int key, boolean hold, int repeat) {
 		if (mInputMode instanceof ModePredictive && DictionaryLoader.autoLoad(this, mLanguage)) {

app/src/main/java/io/github/sspanak/tt9/util/SystemSettings.java

@@ -1,9 +1,9 @@
 package io.github.sspanak.tt9.util;
 
-import android.app.Activity;
 import android.content.Context;
 import android.os.Build;
 import android.os.LocaleList;
+import android.provider.Settings;
 import android.view.inputmethod.InputMethodInfo;
 import android.view.inputmethod.InputMethodManager;
 
@@ -14,7 +14,7 @@ public class SystemSettings {
 	private static InputMethodManager inputManager;
 	private static String packageName;
 
-	public static boolean isTT9Enabled(Activity context) {
+	public static boolean isTT9Enabled(Context context) {
 		inputManager = inputManager == null ? (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE) : inputManager;
 		packageName = packageName == null ? context.getPackageName() : packageName;
 
@@ -26,6 +26,20 @@ public class SystemSettings {
 		return false;
 	}
 
+	public static boolean isTT9Active(Context context) {
+		String defaultIME = Settings.Secure.getString(context.getContentResolver(), Settings.Secure.DEFAULT_INPUT_METHOD);
+		inputManager = inputManager == null ? (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE) : inputManager;
+		packageName = packageName == null ? context.getPackageName() : packageName;
+
+
+		for (final InputMethodInfo imeInfo : inputManager.getEnabledInputMethodList()) {
+			if (packageName.equals(imeInfo.getPackageName()) && imeInfo.getId().equals(defaultIME)) {
+				return true;
+			}
+		}
+		return false;
+	}
+
 	public static String getLocale() {
 		Locale locale = Build.VERSION.SDK_INT >= Build.VERSION_CODES.N ? LocaleList.getDefault().get(0) : Locale.getDefault();
 		String country = locale.getCountry();