fix(terminal): cancel last toast when TermuxActivity is destroyed

termux/termux-app/src/main/java/com/termux/app/TermuxActivity.java

@@ -333,7 +333,11 @@ public class TermuxActivity extends BaseIDEActivity implements ServiceConnection
         if (mIsInvalidState) return;
 
         this.binding = null;
-        this.mLastToast = null;
+
+        if (mLastToast != null) {
+            mLastToast.cancel();
+        }
+        mLastToast = null;
 
         if (mTermuxService != null) {
             // Do not leave service and session clients with references to activity.
@@ -580,9 +584,7 @@ public class TermuxActivity extends BaseIDEActivity implements ServiceConnection
     @SuppressLint("RtlHardcoded")
     @Override
     public void onBackPressed() {
-        if (KeyboardUtils.isSoftKeyboardVisible(this)) {
-            KeyboardUtils.showSoftKeyboard(this, getTerminalView());
-        } else if (getDrawer().isDrawerOpen(Gravity.LEFT)) {
+        if (getDrawer().isDrawerOpen(Gravity.LEFT)) {
             getDrawer().closeDrawers();
         } else {
             finishActivityIfNotFinishing();

termux/termux-shared/src/main/java/com/termux/shared/view/KeyboardUtils.java

@@ -120,7 +120,6 @@ public class KeyboardUtils {
      * @param activity The Activity of the root view for which the visibility should be checked.
      * @return Returns {@code true} if soft keyboard is visible, otherwise {@code false}.
      */
-    @RequiresApi(api = Build.VERSION_CODES.M)
     public static boolean isSoftKeyboardVisible(final Activity activity) {
         if (activity != null && activity.getWindow() != null) {
             WindowInsets insets = activity.getWindow().getDecorView().getRootWindowInsets();