How to replace xml attribute value?

Question

I'm looking for a way to update an xml file attribute value. For example the following xml I would like to replace the attribute android:versionCode value 30003 with another value. I'm having a hard time understanding how ant can do that using replace or regex.

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.app.see"
    android:installLocation="auto"
    android:versionCode="30003"
    android:versionName="@string/app_version" >
</manifest>

Mads Hansen · Accepted Answer · 2012-12-12 01:59:37Z

4

If it is really that simple, you could use replaceregexp:

<property name="newVersionCode" value="30004"/>
<replaceregexp file="${src}/AndroidManifest.xml"
               match='(android:versionCode=").*(")'
               replace="\1${newVersionCode}\2"
               byline="true"
/>

Otherwise, you should consider using the XSLT task. You would want to copy the original file into a temp directory, then apply a stylesheet where the new value is specified as a parameter, and generate the output over the original manifest.

answered Dec 12, 2012 at 1:59

Mads Hansen

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2 Comments

yokks Over a year ago

Its deleting the next attributes(ex versionName), if the entire xml tag is in the single line. Do we have any other way to resolve it?

Mads Hansen Over a year ago

Either tighten up the regex, or look to use a more robust find and replace implementation, such as the XSLT task.

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