How to create FileObserver in Android

File Observer Android

What is FileObserver? A FileObserver in Android is an interface that monitors file access and modification. It triggers an event any time a file is accessed or changed by any process on the device. Each FileObserver instance monitors either a file or a directory. And if the instance is observing a directory, events will be triggered for all files and sub-directories inside the monitored directory. Warning If a FileObserver is garbage collected, it will stop sending events. Also, FileObserver must be

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