- Android text scanner library how to#
- Android text scanner library full#
- Android text scanner library android#
On my Archos and Optimus One about 200 milliseconds - on my Nexus even up to 900 (!) milliseconds on its worst run. The scan itself takes even longer - which took me by surprise. When doing some tests it took on my Optimus One (with an sd card) and on my Galaxy Nexus (with an extra partition) about 20 to 40 milliseconds to establish the connection - on my Archos tablet (also extra partition) about 100 milliseconds. This snippet would fail with an IllegalStateException: The following snippet shows you a sample implementation of the MediaScannerConnectionClient interface.Ĭ.scanFile(file.getAbsolutePath(), null) The way the API is constructed, you actually need to use this callback method to start the scan. Since this might take a little while, as described in the next section, you might be interested in this callback. Your MediaScannerConnectionClient's implementation is not only called whenever a scan has been completed, but also as soon as the connection has been established. You need to implement the MediaScannerConnection.MediaScannerConnectionClient for callbacks. This is the most complex way to make your files known. Creating an instance of MediaScannerConnection This method gets the filename and the URI for the MediaStore.Files provider passed in as parameters. The OnScanCompletedListener itself must implement the onScanCompleted() method. New OnScanCompletedListener() void onScanCompleted(String path, Uri uri) ) Parameters for the static scanFile() method ParameterĪ String array containing the paths of the files you want to addĪ String array containing the mime types of the filesĪ MediaScannerConnection.OnScanCompletedListener to be notified when the scan is completed The simplest way to do so is by sending a broadcast:
Android text scanner library how to#
In a later post I will cover how to use the MediaStore provider for making your files known. In this post I deal with the MediaScanner only. If you want your files to be added to the media library, you can do so either by using the MediaStore content provider, or by using the MediaScanner. Read more about this in the section "Not only relevant for media files". Even more so, as new devices might support MTP, which means that all files - not only media files - have to made known. You have the responsibility to get this right. This means, any file, that must be available in the media library instantaneously, has to be added by you.
Android text scanner library full#
A full scan is taking quite some time and you do not want this to happen arbitrarily, maybe even while the user is using his device heavily. This might sound bad at first - but think about it.
Android text scanner library android#
But often they should be.Īs far as I can tell from a cursory search through Android's codebase, Android runs a full media scan only on reboot and when (re)mounting the sd card. When you add files to Android's filesystem these files are not picked up by the MedaScanner automatically.