64 lines
2.8 KiB
Text
64 lines
2.8 KiB
Text
Surviving with Android 4.4 (KitKat) using BRouter 1.0.1
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BRouter 1.0.1 adds some basic support to reclaim your external
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SD card on KitKat.
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What's new is a configuration file located at:
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brouter/segments3/storageconfig.txt
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which has 2 configuration items:
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"secondary_segment_dir" points to an additional directory containing
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routing data files. This can be located anywhere.
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"additional_maptool_dir" points to a base-directory that should
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be scanned for maptool-installations in addition to the standard-guesses.
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Initially, the value for "secondary_segment_dir" is "../segments2" to support the
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file-format transition from 0.9.9 to 1.0.1, so that, after upgrading, your existing
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datafiles are found via the secondary directory.
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However, for surviving KitKat, you are supposed to change that to the
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absolute path to a directory on the external card, e.g.:
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secondary_segment_dir=/storage/external_SD/brouter_segments3
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When searching for datafiles, both the download manager and the router first look in the primary (brouter/segments3) and then in the secondary directory (or it's "carsubset" subfolder). On the other hand, the download manager always writes new datafiles to the primary directory, so the secondary directory is read-only.
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So you can move datafiles downloaded by the download-manager to the secondary directory, by using a file manager, in order to free disk space on the internal card. Or you ca download datafiles directly to the secondary directory by doing manual http downloads
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from http://brouter.de/brouter/segments3
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Depending on how your maptool handles the file-system structure, you are done.
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However, e.g. for OsmAnd it is likely that BRouter still has no access to OsmAnd's waypoint database. The reason is:
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When, after installing OsmAnd, you choose to move it's resources to the external SD Card,
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it moves it to a special directory where it has write-access even with Android 4.4, e.g.:
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/storage/external_SD/Android/data/net.osmand/files
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The package name slightly differs for OsmAnd+.
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This directory is not found automatically by BRouter, so you have to configure
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it as "additional_maptool_dir".
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However, you are still not done, because if BRouter finds a wayoint-database file
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under:
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/storage/external_SD/Android/data/net.osmand/files/osmand/favourites.gpx
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then it decides to write it's tracks to:
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/storage/external_SD/Android/data/net.osmand/files/osmand/tracks
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But this directory is not writable by BRouter. So what you have to do is to create
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a redirection-file (create the tracks folder if it does not exist!)
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/storage/external_SD/Android/data/net.osmand/files/osmand/tracks/brouter.redirect
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and that should contain a single line with the absolute path to the folder where
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the tracks should be written (e.g. /mnt/sdcard/brouter )
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THEN you are done.
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