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Add information about battery optimizations

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Nathan Kerr 2019-07-31 18:48:02 +00:00
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@ -120,6 +120,14 @@ cordova.plugins.backgroundMode.wakeUp();
cordova.plugins.backgroundMode.unlock();
```
### Request to disable battery optimizations
Starting in Android 8, apps can be put to sleep to conserve battery. When this happens (usually after 5 minutes or so), the background task is killed. This will cause things like MQTT connections to break.
This method will show a permission prompt for the user (only if the app hasn't been granted permission) to ignore the optimization.
```js
cordova.plugins.backgroundMode.disableWebViewOptimizations();
```
### Notification
To indicate that the app is executing tasks in background and being paused would disrupt the user, the plug-in has to create a notification while in background - like a download progress bar.