Android: app crashes while running TTS in backgroud

[MikWas]

Sympthoms

• While TTS is running in the background the app crashes frequently.
• The current position is not remembered. It's required to search the position manually once the app is started again.
• If the user's ViewMode setting is "Pages" before the crash, then it's overwritten with the setting "Scroll" that is temporarily active during the TTS processing.

Assumptions

• The CoolReader instance is killed by the system to release the resources.

Tried measures

• Disabling energy saving for CoolReader doesn't help.
• Disabling energy saving in the mobile device doesn't help.

Affected devices:

• Samsung Galaxy Note 3
• Samsung Galaxy Note 4
• Samsung Galaxy Note 9

It looks like the issue is a common one.

Suggestion of the solution Adding optional notification which should be active in the notification area while TTS is running.

Effects:

• Preventing CoolReader from being killed by the OS
• Possibility of functional improvement - placing TTS playback buttons (Play/Pause, Stop, Next, ...)

[virxkane]

@MikWas Can you test latest (3.2.49) version? I hope it's fixed in #169.