Could provide a version adapted for Android 15 with a 16KB size limit?

[wyqlxf]

problem: Starting November 1, 2025, all new apps and updates to existing apps submitted to Google Play that target Android 15 and higher must support a 16 KB page size on 64-bit devices.

https://developer.android.com/guide/practices/page-sizes?hl=zh-cn

[RicharC293]

What is the status of this?

[jonasfj]

If someone has suggestions for how to fix this in the build configuration, we're open to PRs.

It'll be a while before I have time to dive into any of this.

[mrcsh]

I was able to elimintate the 16k alignment warning for libwebcrypto.so in my app by updating to agp 8.13 and gradle 8.13 and setting

ndkVersion '28.2.13676358'

in the plugin's build.gradle android section, as well as my apps build.gradle

I was also able to get it to work by forcing all plugins in my project to specific versions with the following code in android/build.gradle

subprojects {
    afterEvaluate { project ->
        if (project.hasProperty('android')) {
            project.android {
                if (namespace == null || namespace == '') {
                    namespace project.group
                }
            }
        }
        if (project.plugins.hasPlugin("com.android.application")
                || project.plugins.hasPlugin("com.android.library")) {
       
                project.android.compileOptions {
                    sourceCompatibility = JavaVersion.VERSION_17
                    targetCompatibility = JavaVersion.VERSION_17
                }
                project.android {
                    compileSdk = 35
                    compileSdkVersion 35
                    buildToolsVersion "35.0.0"
                    ndkVersion '28.2.13676358'
                }
          
        }
    }
}

The warning went away on the 16k emulator and when I uploaded to google play the play console finally said the app supports 16KB pages.

[Dararii]

I was able to elimintate the 16k alignment warning for libwebcrypto.so in my app by updating to agp 8.13 and gradle 8.13 and setting

ndkVersion '28.2.13676358'

in the plugin's build.gradle android section, as well as my apps build.gradle

I was also able to get it to work by forcing all plugins in my project to specific versions with the following code in android/build.gradle

subprojects {
    afterEvaluate { project ->
        if (project.hasProperty('android')) {
            project.android {
                if (namespace == null || namespace == '') {
                    namespace project.group
                }
            }
        }
        if (project.plugins.hasPlugin("com.android.application")
                || project.plugins.hasPlugin("com.android.library")) {
       
                project.android.compileOptions {
                    sourceCompatibility = JavaVersion.VERSION_17
                    targetCompatibility = JavaVersion.VERSION_17
                }
                project.android {
                    compileSdk = 35
                    compileSdkVersion 35
                    buildToolsVersion "35.0.0"
                    ndkVersion '28.2.13676358'
                }
          
        }
    }
}

The warning went away on the 16k emulator and when I uploaded to google play the play console finally said the app supports 16KB pages.

I tried this but cannot make it work. Any help?

[mrcsh]

I am not sure not sure why you would still be having issues, but make sure to do a gradle clean and a flutter clean?
and that the NDK is downloaded and installed...

From all the docs I could find it seems that building the .so with the NDK (>=28) is really the only requirement.

[marmelad52]

I am not sure not sure why you would still be having issues, but make sure to do a gradle clean and a flutter clean? and that the NDK is downloaded and installed...

From all the docs I could find it seems that building the .so with the NDK (>=28) is really the only requirement.

@mrcsh Thank you! Your solution worked perfectly for me.

Here's what I did to make it work:

1. Updated AGP from 8.12.2 to 8.13 in settings.gradle
2. Set NDK to 28.2.13676358 in app's build.gradle
3. Added the subprojects configuration to root build.gradle as you suggested
4. Important: Had to add kotlinOptions configuration to avoid JVM-target compatibility issues:

if (project.hasProperty('kotlin')) {
    project.tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).configureEach {
        kotlinOptions {
            jvmTarget = "17"
        }
    }
}

5. Ran flutter clean and ./gradlew clean as you recommended