Fixed: Get file basename from Uri path when opening files in termux if failed to get it ContentResolver and EXTRA_TITLE

app/src/main/java/com/termux/filepicker/TermuxFileReceiverActivity.java

@@ -142,6 +142,7 @@ public class TermuxFileReceiverActivity extends Activity {
             }
 
             if (attachmentFileName == null) attachmentFileName = subjectFromIntent;
+            if (attachmentFileName == null) attachmentFileName = UriUtils.getUriFileBasename(uri, true);
 
             InputStream in = getContentResolver().openInputStream(uri);
             promptNameAndSave(in, attachmentFileName);

termux-shared/src/main/java/com/termux/shared/data/UriUtils.java

@@ -5,6 +5,8 @@ import android.net.Uri;
 
 import androidx.annotation.NonNull;
 
+import com.termux.shared.file.FileUtils;
+
 public class UriUtils {
 
     /**
@@ -30,6 +32,28 @@ public class UriUtils {
         return path + (DataUtils.isNullOrEmpty(fragment) ? "" : "#" + fragment);
     }
 
+    /**
+     * Get the file basename from a {@link Uri}. The file basename is anything after last forward
+     * slash "/" in the path, or the path itself if its not found.
+     *
+     * @param uri The {@link Uri} to get basename from.
+     * @param withFragment If the {@link Uri} fragment should be included in basename.
+     * @return Returns the file basename if found, otherwise {@code null}.
+     */
+    public static String getUriFileBasename(Uri uri, boolean withFragment) {
+        if (uri == null) return null;
+
+        String path;
+        if (withFragment) {
+            path = getUriFilePath(uri);
+        } else {
+            path = uri.getPath();
+            if (DataUtils.isNullOrEmpty(path)) return null;
+        }
+
+        return FileUtils.getFileBasename(path);
+    }
+
     /**
      * Get {@link ContentResolver#SCHEME_FILE} {@link Uri} for path.
      *