Set a global variable in gradle that can use in manifest file

Question

I want to create a global variable similar with applicationId. It is set value in build.gradle and will be used in manifest. Is it possible?

gradle is a part of build system/ IDE, not related with the app — droidev, Oct 23 '15 at 04:57
if you explain the real use case, I think may be we can help — droidev, Oct 23 '15 at 05:00
Possible duplicate of http://stackoverflow.com/questions/17197636/is-it-possible-to-declare-a-variable-in-gradle-usable-in-java — Ankur Aggarwal, Oct 23 '15 at 05:07

score 26 · Accepted Answer · answered Oct 23 '15 at 06:15

26

You can set them, for instance I'm setting it for different product flavors

productFlavors {
        production {
            applicationId = "com.myapp.app"
            resValue "string", "authority", "com.facebook.app.FacebookContentProvider5435651423234"
        }
        development {
            applicationId = "com.myapp.development"
            resValue "string", "authority", "com.facebook.app.FacebookContentProvider2134564533421"
        }
        qa {
            applicationId = "com.myapp.qa"
            resValue "string", "authority", "com.facebook.app.FacebookContentProvider29831237981287319"
        }
}

And use it like this

<provider
    android:name="com.facebook.FacebookContentProvider"
    android:authorities="@string/authority"
    android:exported="true" />

answered Oct 23 '15 at 06:15

Marko

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Thank so much. This is exactly my situation. I've tried to set a variable facebookProdiderId inside build.gradle then reused inside android manifest file like ${facebookProdiderId}, but it does not work – thanhnd Oct 23 '15 at 06:23
Glad I could help you! :) – Marko Oct 23 '15 at 06:24
can we use same applicationId with multiple flavors in this. – Tushar Pandey Oct 04 '16 at 15:06
@TusharPandey to be honest not sure, I think it could work, give it a try. – Marko Oct 04 '16 at 16:04
I got solution , there is no need of content provider. it only requires when we pick image from gallery and share it in facebook. – Tushar Pandey Oct 05 '16 at 07:22

score 19 · Answer 2 · answered Nov 05 '16 at 13:41

If you just want to use the application id set in gradle in your manifest, you can simply use:

${applicationId}

For instance:

<provider
    android:authorities="${applicationId}.ShareFileProvider" ... >
    ...
</provider>

If you want the same behavior with custom variables, you can use manifestPlaceholders, like this:

android {
    defaultConfig {
        manifestPlaceholders = [hostName:"www.example.com"]
    }
}

And in your manifest:

<intent-filter ... >
    <data android:scheme="http" android:host="${hostName}" ... />
    ...
</intent-filter>

See https://developer.android.com/studio/build/manifest-build-variables.html for more information.

score 17 · Answer 3 · answered Sep 19 '16 at 17:32

While Marko's answer seems to work, there's currently a better solution that doesn't require adding variables to the string resource files.

The manifest merger accepts placeholders:

For custom placeholders replacements, use the following DSL to configure the placeholders values :

 android {
     defaultConfig {
         manifestPlaceholders = [ activityLabel:"defaultName"]
     }
     productFlavors {
         free {
         }
         pro {
             manifestPlaceholders = [ activityLabel:"proName" ]
         }
     }

will substitute the placeholder in the following declaration :

<activity android:name=".MainActivity" android:label="${activityLabel}" >

You can also manipulate those strings with groovy functions.

This is a more convenient solution. Thank you. – Ayaz Alifov Jul 18 '17 at 09:46 — Ayaz Alifov, Jul 18 '17 at 09:46

score 2 · Answer 4 · answered Oct 23 '15 at 05:29

2

To use the string in Manifest, you can directly make it in strings.xml. Like this,

<string name="variable_name">value</string>

answered Oct 23 '15 at 05:29

Shubham A.

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Set a global variable in gradle that can use in manifest file

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