From 67c71ef325d8ad30201ea68c992bcf5d64e91cac Mon Sep 17 00:00:00 2001
From: Gideon Zenz <gzenz@gmx.de>
Date: Fri, 29 May 2026 21:07:16 +0200
Subject: [PATCH] Garmin: Replace SLF4J 2.0 fluent API call with 1.x-compatible
 logging

LOG.atLevel(logLevel).log(...) in NativeFITMessage.getFieldDefinition
uses the SLF4J 2.0 fluent API, which logback-android 3.0.0 does not
implement. This throws AbstractMethodError at runtime, crashing the
FitAsyncProcessor thread and aborting the entire Garmin device sync
when a .FIT file triggers the type/size mismatch path.

Replace with a switch dispatching to LOG.debug/info/warn.
---
 .../devices/garmin/fit/NativeFITMessage.java   | 18 +++++++-----------
 1 file changed, 7 insertions(+), 11 deletions(-)

diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/garmin/fit/NativeFITMessage.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/garmin/fit/NativeFITMessage.java
index 8da59703e1..49e0bdc583 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/garmin/fit/NativeFITMessage.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/garmin/fit/NativeFITMessage.java
@@ -2700,17 +2700,13 @@ public class NativeFITMessage {
                 }
 
                 if (logLevel != null) {
-                    LOG.atLevel(logLevel).log(
-                            "Native for {}[{}] is of type {} with size {} (base: {}), but message declares {} with size {} (base: {})",
-                            name(),
-                            fieldDefinitionPrimitive.name,
-                            stdBaseType,
-                            fieldDefinitionPrimitive.size,
-                            stdBaseType.getSize(),
-                            baseType,
-                            size,
-                            baseType.getSize()
-                    );
+                    final String msg = "Native for {}[{}] is of type {} with size {} (base: {}), but message declares {} with size {} (base: {})";
+                    final Object[] args = new Object[]{name(), fieldDefinitionPrimitive.name, stdBaseType, fieldDefinitionPrimitive.size, stdBaseType.getSize(), baseType, size, baseType.getSize()};
+                    switch (logLevel) {
+                        case DEBUG: LOG.debug(msg, args); break;
+                        case INFO:  LOG.info(msg, args); break;
+                        default:    LOG.warn(msg, args); break;
+                    }
 
                     if (size == 1 && (baseType == BaseType.UINT16 || baseType == BaseType.UINT32 || baseType == BaseType.UINT64)) {
                         // very common issue for COROS: