Fix #179: App crashed because of using function HashMap#putIfAbsent w…

…hich only available from Android API 24 onwards
polarofficial · Aug 10, 2021 · 353310a · 353310a
1 parent fd87fd3
commit 353310a
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/...library/src/main/java/com/polar/androidcommunications/api/ble/model/gatt/BleGattBase.java b/...library/src/main/java/com/polar/androidcommunications/api/ble/model/gatt/BleGattBase.java
@@ -303,7 +303,9 @@ protected void addCharacteristic(final UUID characteristic, int properties) {
         if ((properties & PROPERTY_READ) != 0 && !containsCharacteristicRead(characteristic)) {
             characteristicsRead.put(characteristic, true);
         }
-        characteristics.putIfAbsent(characteristic, true);
+        if (!characteristics.containsKey(characteristic)) {
+            characteristics.put(characteristic, true);
+        }
     }
 
     protected void addAvailableCharacteristic(UUID chr, int property) {