How to replace a string for a buildvariant with gradle in android studio?

Question

I have two flavors of my project:

flavor1 -> packagename: com.example.flavor1  flavor2 -> packagename: com.example.flavor2 

Now I want to build a buildvariant of flavor1 and flavor2. The only difference of the buildvariant is another packagename.

My project uses MapFragments and has just one Manifest - so I put the the permission name of MAPS_RECEIVE in my string resource files of the respective flavors.

The question is: how can I replace a string resource of a buildvariant?

I tried the following approach (described in this post):

buildTypes{     flavor1Rev{         packageName 'com.example.rev.flavor1'         filter(org.apache.tools.ant.filters.ReplaceTokens, tokens: ['package_permission' : 'com.example.rev.flavor1.permission.MAPS_RECEIVE'])     } } 

But using this I got this error:

Could not find method filter() for arguments [{tokens={package_permission=com.example.rev.flavor1.permission.MAPS_RECEIVE}}, BuildTypeDsl_D ecorated{name=ReplaceTokens, debuggable=false, jniDebugBuild=false, renderscript DebugBuild=false, renderscriptOptimLevel=3, packageNameSuffix=null, versionNameS uffix=null, runProguard=false, zipAlign=true, signingConfig=null}] on BuildTypeD sl_Decorated{name=buderusFinal, debuggable=false, jniDebugBuild=false, renderscr iptDebugBuild=false, renderscriptOptimLevel=3, packageNameSuffix=null, versionNa meSuffix=null, runProguard=false, zipAlign=true, signingConfig=null}.

Do I have to define an own task for the filter method?

EDIT [2013_07_09]:

String in src/flavor1/res:

<string name="package_permission">package_permission</string> 

Code in build.gradle to replace the string:

buildTypes{     flavor1Rev{         copy{             from('src/res/'){                 include '**/*.xml'                  filter{String line -> line.replaceAll(package_permission, 'com.example.rev.flavor1.permission.MAPS_RECEIVE')}             }             into '$buildDir/res'         }     } }  

Answer 1

I solved the problem on my own, so here is the solution "step by step" - perhaps it will help some other newbies to gradle :)

• Copy Task in General:

  copy{     from("pathToMyFolder"){         include "my.file"     }     // you have to use a new path for youre modified file     into("pathToFolderWhereToCopyMyNewFile") } 

• Replace a line in General:

  copy {    ...    filter{        String line -> line.replaceAll("<complete line of regular expression>",                                       "<complete line of modified expression>")    } } 

• I think the biggest problem was to get the right paths, because I had to make this dynamically (this link was very helpful for me). I solved my problem by replacing the special lines in the manifest and not in the String-file.

• The following example shows how to replace the "meta-data"-tag in the manifest to use youre google-maps-api-key (in my case there are different flavors that use different keys ):

  android.applicationVariants.each{ variant ->      variant.processManifest.doLast{          copy{             from("${buildDir}/manifests"){                 include "${variant.dirName}/AndroidManifest.xml"             }             into("${buildDir}/manifests/$variant.name")              // define a variable for your key:             def gmaps_key = "<your-key>"              filter{                 String line -> line.replaceAll("<meta-data android:name=\"com.google.android.maps.v2.API_KEY\" android:value=\"\"/>",                                                "<meta-data android:name=\"com.google.android.maps.v2.API_KEY\" android:value=\"" + gmaps_key + "\"/>")             }              // set the path to the modified Manifest:             variant.processResources.manifestFile = file("${buildDir}/manifests/${variant.name}/${variant.dirName}/AndroidManifest.xml")         }        } }