Details
-
Bug
-
Resolution: Done
-
P1: Critical
-
5.9.3
-
None
-
Android versions 4, 6, and 7
Qt 5.9.3
-
Android
Description
I'm seeing this crash from users on Firebase Crashlytics on Android versions 4, 6, and 7 (APIs 19, 23, 24) with Qt 5.9.3. My app uses Bluetooth LE functionality and is based on the Bluetooth Low Energy Scanner example. The app sets the background running attribute to true in its Android manifest.
Stack traces:
Fatal Exception: java.lang.IndexOutOfBoundsException Index: 65, Size: 0 java.util.ArrayList.throwIndexOutOfBoundsException (ArrayList.java:255) java.util.ArrayList.get (ArrayList.java:308) org.qtproject.qt5.android.bluetooth.QtBluetoothLE.interruptCurrentIO (QtBluetoothLE.java:1138) org.qtproject.qt5.android.bluetooth.QtBluetoothLE.access$200 (QtBluetoothLE.java:67) org.qtproject.qt5.android.bluetooth.QtBluetoothLE$TimeoutRunnable.run (QtBluetoothLE.java:106) android.os.Handler.handleCallback (Handler.java:739) android.os.Handler.dispatchMessage (Handler.java:95) android.os.Looper.loop (Looper.java:158) android.app.ActivityThread.main (ActivityThread.java:7225) java.lang.reflect.Method.invoke (Method.java) com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:1230) com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1120)
Fatal Exception: java.lang.IndexOutOfBoundsException Index: 92, Size: 0 java.util.ArrayList.get (ArrayList.java:411) org.qtproject.qt5.android.bluetooth.QtBluetoothLE.performNextIO (QtBluetoothLE.java:1268) org.qtproject.qt5.android.bluetooth.QtBluetoothLE.performNextIO (QtBluetoothLE.java:1287) org.qtproject.qt5.android.bluetooth.QtBluetoothLE.performNextIO (QtBluetoothLE.java:1287) org.qtproject.qt5.android.bluetooth.QtBluetoothLE.performNextIO (QtBluetoothLE.java:1287) org.qtproject.qt5.android.bluetooth.QtBluetoothLE.performNextIO (QtBluetoothLE.java:1287) org.qtproject.qt5.android.bluetooth.QtBluetoothLE.performNextIO (QtBluetoothLE.java:1287) org.qtproject.qt5.android.bluetooth.QtBluetoothLE.performNextIO (QtBluetoothLE.java:1287) org.qtproject.qt5.android.bluetooth.QtBluetoothLE.performNextIO (QtBluetoothLE.java:1287) org.qtproject.qt5.android.bluetooth.QtBluetoothLE.performNextIO (QtBluetoothLE.java:1287) org.qtproject.qt5.android.bluetooth.QtBluetoothLE.performNextIO (QtBluetoothLE.java:1287) org.qtproject.qt5.android.bluetooth.QtBluetoothLE.performNextIO (QtBluetoothLE.java:1287) org.qtproject.qt5.android.bluetooth.QtBluetoothLE.performNextIO (QtBluetoothLE.java:1287) org.qtproject.qt5.android.bluetooth.QtBluetoothLE.interruptCurrentIO (QtBluetoothLE.java:1133) org.qtproject.qt5.android.bluetooth.QtBluetoothLE.access$200 (QtBluetoothLE.java:67) org.qtproject.qt5.android.bluetooth.QtBluetoothLE$TimeoutRunnable.run (QtBluetoothLE.java:106) android.os.Handler.handleCallback (Handler.java:751) android.os.Handler.dispatchMessage (Handler.java:95) android.os.Looper.loop (Looper.java:154) android.app.ActivityThread.main (ActivityThread.java:6077) java.lang.reflect.Method.invoke (Method.java) com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:865) com.android.internal.os.ZygoteInit.main (ZygoteInit.java:755)
The value of the index causing the exception seems to vary between crash reports but the size of the ArrayList seems to always be 0.
The Firebase Crashlytics report indicates that 98% of these crashes occur when the app is in the background on Android.