Blog Infos
Author
Published
Topics
Published

In this article, you will learn how to make use of Android Manifest placeholders to supercharge your Android app development.

Injecting Variables into AndroidManifest.xml
// build.gradle
android {
  defaultConfig {
    manifestPlaceholders.baseUrl = "api.demoserver.com"
  }
}
// AndroidManifest.xml
<intent-filter ...> 
  <data android:scheme="https" android:host="${baseUrl}" ... />
</intent-filter>

Similarly, other examples can include properties such as applicationIdscreenOrientation as well as frequently used elements in the AndroidManifest.xml:

// build.gradle
android {
  defaultConfig {
    applicationId "example.manifest.app"
  }
  buildTypes {
    release {
      manifestPlaceholders.screenOrientation = "portrait"
    }
    debug {
      manifestPlaceholders.screenOrientation = "unspecified"
    }
  }
}

Which can be used in your Manifest as below:

// AndroidManifest.xml
<intent-filter ... >
  <action android:name="${applicationId}" />
</intent-filter>
<uses-sdk tools:overrideLibrary="${applicationId}.home, ${applicationId}.util" />
<activity
  android:name=".MainActivity"
  android:screenOrientation="${screenOrientation}" />

Alternatively, you can specify in the form of key-value pairs at once by assigning manifestPlaceholders as an array like this:

// build.gradle
android {
  defaultConfig {
    manifestPlaceholders = [baseUrl: "dev.demoserver.com",
                            screenOrientation: "portrait",
                           ]
  }
}
Managing Multiple Manifests
// build.gradle
android {
  buildTypes {
    release { ... }
    debug { ... }
  }
  flavorDimensions "ui", "paidui", "trialui", "referralui"
  productFlavors {
    paid {
      dimension "ui"
    }
    free {
      dimension "paidui"
    }
    trial {
      dimension "trialui"
    }
    referral {
      dimension "referralui"
    }
  }
}
Merging Multiple Manifests

Job Offers

Job Offers


    Android Software Engineer (f/m/d)

    Paradox Cat GmbH
    Munich
    • Full Time
    apply now

    Senior Android Software Engineer (f/m/d)

    Paradox Cat GmbH
    Munich
    • Full Time
    apply now

OUR VIDEO RECOMMENDATION

, ,

From Scoped Storage to Photo Picker: Everything to know about Storage

Persistence is a core element of every mobile app. Android provides different APIs to access or expose files with different tradeoffs.
Watch Video

From Scoped Storage to Photo Picker: Everything to know about Storage

Yacine Rezgui
Android developer advocate
Google

From Scoped Storage to Photo Picker: Everything to know about Storage

Yacine Rezgui
Android developer ad ...
Google

From Scoped Storage to Photo Picker: Everything to know about Storage

Yacine Rezgui
Android developer advocat ...
Google

Jobs

Build Your Own Manifest
<intent-filter>
  <action android:name="android.intent.action.VIEW" />
  <category android:name="android.intent.category.BROWSABLE"/>
  <category android:name="android.intent.category.DEFAULT" />
  <!-- custom intent filter definition for deep links -->
  ${deepLinks_manifestPlaceholder}
</intent-filter>
<application>
  <meta-data android:name="io.sentry.dsn" android:value="https://1093t8yhqfw8h819@x11.ingest.sentry.io/123123" />
  <!-- Set tracesSampleRate to 1.0 to capture 100% of transactions for performance monitoring.
   We recommend adjusting this value in production. -->
  <meta-data android:name="io.sentry.traces.sample-rate" android:value="1.0" />
</application>
<meta-data android:name="io.sentry.traces.activity.enable" android:value="true" />
<meta-data android:name="io.sentry.traces.activity.auto-finish.enable" android:value="true" />
android {
  buildTypes {
    release { 
      manifestPlaceholders.sentryTraceSampleRate = "0.6"
      manifestPlaceholders.sentryActivityTrace = true
      manifestPlaceholders.sentryAutoFinishActivityTrace = true
    }
    debug {
      manifestPlaceholders.sentryTraceSampleRate = "1.0"
      manifestPlaceholders.sentryActivityTrace = false
      manifestPlaceholders.sentryAutoFinishActivityTrace = false
    }
  }
}

With the above build.gradle, you can modify your AndroidManifest.xml to support placeholders as below:

// AndroidManifest.xml
<application>
  <meta-data android:name="io.sentry.dsn" android:value="https://1093t8yhqfw8h819@x11.ingest.sentry.io/123123" />
  <!-- Set tracesSampleRate to 1.0 to capture 100% of transactions for performance monitoring.
      We recommend adjusting this value in production. -->
  <meta-data android:name="io.sentry.traces.sample-rate" android:value="${sentryTraceSampleRate}" />
  <meta-data android:name="io.sentry.traces.activity.enable" android:value="${sentryActivityTrace}" />
  <meta-data android:name="io.sentry.traces.activity.auto-finish.enable" android:value="${sentryAutoFinishActivityTrace}" />
</application>
Conclusion

This article was originally published on proandroiddev.com

YOU MAY BE INTERESTED IN

YOU MAY BE INTERESTED IN

blog
It’s one of the common UX across apps to provide swipe to dismiss so…
READ MORE
blog
In this part of our series on introducing Jetpack Compose into an existing project,…
READ MORE
blog
This is the second article in an article series that will discuss the dependency…
READ MORE
blog
Let’s suppose that for some reason we are interested in doing some tests with…
READ MORE

Leave a Reply

Your email address will not be published. Required fields are marked *

Fill out this field
Fill out this field
Please enter a valid email address.

Menu