# Logging and Debugging

The host app exposes a log viewer and a “Share logs” button.

## How logging worksBubbl exposes a `Logger` helper that writes logs to a file.


```kotlin
Logger.log("MainActivity", "Manual refresh")
```

## Sharing logsThe host app shares logs using `FileProvider`.


```kotlin
val logFile = Logger.getLogFile()
val uri = FileProvider.getUriForFile(this, "${packageName}.fileprovider", logFile)
```

## Required file_paths.xmlIf you want to share logs, add this file:

`app/src/main/res/xml/file_paths.xml`


```xml
<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <files-path name="logs" path="." />
</paths>
```

## Why

Without this file, `FileProvider` cannot generate a shareable URI and will crash.

Tip
If you do not need log sharing in production, remove the FileProvider and the related permissions.