Home › Android content provider openFd FileNotFoundException (file compressed)

Android content provider openFd FileNotFoundException (file compressed) 

freyo
Joined:
07/27/2010
Posts:
128

May 17, 2011 08:46:50    Last update: May 17, 2011 08:47:35
When I used AssetManager to open an XML file in a ContentProvider: 
getContext().getAssets().openFd("demo.xml");

it failed with this exception: 
java.io.FileNotFoundException: This file can not be opened as a file descriptor; it is probably compressed

It turned out that openFd only works for asset files that are not compressed. It works on media files such as .mp3, .jpg, .wmv etc., which are not compressed during packaging. XML files are compressed by dedault, causing openFd to fail.

An Android ticket was opened on this issue. Till that is fixed, the workaround is to add an exclusion in build.xml: 
<?xml version="1.0" encoding="UTF-8"?>
<project name="" defaule="help">
    .
    .
    .
    <setup />

    <target name="-package-resources">
        <echo>Packaging resources!!!</echo>
        <aapt executable="${aapt}"
                command="package"
                versioncode="${version.code}"
                debug="${build.packaging.debug}"
                manifest="AndroidManifest.xml"
                assets="${asset.absolute.dir}"
                androidjar="${android.jar}"
                apkfolder="${out.absolute.dir}"
                resourcefilename="${resource.package.file.name}"
                resourcefilter="${aapt.resource.filter}">
            <res path="${resource.absolute.dir}" />
            <nocompress extension="xml" /> 
        </aapt>
    </target>
</project>
Share |
| Comment  | Tags
 

Related Notes