Description

The timer feature has a native-channel contract mismatch.

Flutter invokes timer methods that are not fully implemented on the Android side, and TimerRingController also sends one foregrounding call over the wrong channel.

Affected Code

• lib/app/modules/timer/controllers/timer_controller.dart
• lib/app/modules/timerRing/controllers/timer_ring_controller.dart
• android/app/src/main/kotlin/com/ccextractor/ultimate_alarm_clock/ultimate_alarm_clock/MainActivity.kt

Observed Problems

1. cancelTimer is called from Flutter but not implemented on the timer channel

Flutter code calls:

• timerChannel.invokeMethod('cancelTimer')

but the Android timer channel handler in MainActivity.kt only implements:

• playDefaultAlarm
• stopDefaultAlarm
• runtimerNotif
• clearTimerNotif

So cancelTimer currently falls through to notImplemented.

2. TimerRingController calls bringAppToForeground on the wrong channel

TimerRingController uses:

• MethodChannel('timer')

and then invokes:

• bringAppToForeground

But bringAppToForeground is implemented on the alarm channel, not the timer channel.

That means the timer ring flow depends on a method that is not exposed on the channel it actually uses.

Why this matters

This creates silent timer-flow breakage:

• timer cleanup may not actually happen natively
• timer ring foreground recovery is fragile
• background/foreground timer behavior becomes inconsistent

Expected Behavior

• every Flutter timer-channel method must exist on the Android timer channel
• timer ring foreground recovery must use the correct method/channel contract
• unsupported timer methods should not silently fail

Suggested Fix

• define the timer channel contract explicitly
• add cancelTimer support on the Android timer channel, or remove the Flutter call if it is obsolete
• route bringAppToForeground through the correct channel, or expose it on the timer channel if that is the intended contract
• add a small contract test or integration check for the timer method names

Acceptance Criteria

• cancelTimer from Flutter does not hit notImplemented
• timer ring background-to-foreground recovery uses a valid native method path
• timer channel method names are documented and aligned between Flutter and Android
• regression coverage exists for the timer channel contract