Renderscript broken with AndroidX?

Question

Since I've migrated to androidx I can't make Renderscript run. I'm getting following exception:

2018-10-12 16:27:58.328 27195-27195/pl.qus.xenoamp2 A/zygote64: java_vm_ext.cc:504] JNI DETECTED ERROR IN APPLICATION: JNI NewGlobalRef called with pending exception java.lang.ClassNotFoundException: Didn't find class "android.support.v8.renderscript.RenderScript" on path: DexPathList[[zip file "/data/app/pl.qus.xenoamp2-xHJAddeg9oM-uGSxlvMp7A==/base.apk"],nativeLibraryDirectories=[/data/app/pl.qus.xenoamp2-xHJAddeg9oM-uGSxlvMp7A==/lib/arm64, /data/app/pl.qus.xenoamp2-xHJAddeg9oM-uGSxlvMp7A==/base.apk!/lib/arm64-v8a, /system/lib64, /system/vendor/lib64]] 2018-10-12 16:27:58.328 27195-27195/pl.qus.xenoamp2 A/zygote64: java_vm_ext.cc:504] at java.lang.Class dalvik.system.BaseDexClassLoader.findClass(java.lang.String) (BaseDexClassLoader.java:93) 2018-10-12 16:27:58.328 27195-27195/pl.qus.xenoamp2 A/zygote64: java_vm_ext.cc:504] at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String, boolean) (ClassLoader.java:379) 2018-10-12 16:27:58.328 27195-27195/pl.qus.xenoamp2 A/zygote6 4: java_vm_ext.cc:504] at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String) (ClassLoader.java:312) 2018-10-12 16:27:58.328 27195-27195/pl.qus.xenoamp2 A/zygote64: java_vm_ext.cc:504] at java.lang.String java.lang.Runtime.nativeLoad(java.lang.String, java.lang.ClassLoader, java.lang.String) (Runtime.java:-2) 2018-10-12 16:27:58.328 27195-27195/pl.qus.xenoamp2 A/zygote64: java_vm_ext.cc:504] at java.lang.String java.lang.Runtime.doLoad(java.lang.String, java.lang.ClassLoader) (Runtime.java:1099) 2018-10-12 16:27:58.328 27195-27195/pl.qus.xenoamp2 A/zygote64: java_vm_ext.cc:504] at void java.lang.Runtime.loadLibrary0(java.lang.ClassLoader, java.lang.String) (Runtime.java:1014) 2018-10-12 16:27:58.328 27195-27195/pl.qus.xenoamp2 A/zygote64: java_vm_ext.cc:504] at void java.lang.System.loadLibrary(java.lang.String) (System.java:1657) 2018-10-12 16:27:58.328 27195-27195/pl.qus.xenoamp2 A/zygote64: java_vm_ext.cc:504] at androidx.renderscript.RenderScript androidx.renderscript .RenderScript.internalCreate(android.content.Context, int, androidx.renderscript.RenderScript$ContextType, int) (RenderScript.java:1408) 2018-10-12 16:27:58.328 27195-27195/pl.qus.xenoamp2 A/zygote64: java_vm_ext.cc:504] at androidx.renderscript.RenderScript androidx.renderscript.RenderScript.create(android.content.Context, int, androidx.renderscript.RenderScript$ContextType, int) (RenderScript.java:1599) 2018-10-12 16:27:58.328 27195-27195/pl.qus.xenoamp2 A/zygote64: java_vm_ext.cc:504] at androidx.renderscript.RenderScript androidx.renderscript.RenderScript.create(android.content.Context, androidx.renderscript.RenderScript$ContextType, int) (RenderScript.java:1549) 2018-10-12 16:27:58.328 27195-27195/pl.qus.xenoamp2 A/zygote64: java_vm_ext.cc:504] at androidx.renderscript.RenderScript androidx.renderscript.RenderScript.create(android.content.Context, androidx.renderscript.RenderScript$ContextType) (RenderScript.java:1525) 2018-10-12 16:27:58.328 27195-27195/pl.qus.xenoamp2 A/zygote64 : java_vm_ext.cc:504] at androidx.renderscript.RenderScript androidx.renderscript.RenderScript.create(android.content.Context) (RenderScript.java:1512)

I have usual entries in gradle:

    renderscriptTargetApi 18
    renderscriptSupportModeEnabled true

Anything else I have to change?

Answer 1

I had the same issue, i switched to non support version of renderscript

In project gradle

renderscriptTargetApi 17
renderscriptSupportModeEnabled false

And in the class that use renderscript

import android.renderscript.RenderScript

instead of

import androidx.renderscript.RenderScript

It did the job for me but i don't like this solution, to be completed

Answer 2

There was an issue with the build tools (the prebuilt librsjni_androidx.so, to be exact), and is now fixed in version 29.0.2 .

I've verified this by upgrading compile sdk to API 29 and build tools to 29.0.2.

Edit: This is what I've configured in build.gradle :

    renderscriptTargetApi 18
    renderscriptSupportModeEnabled true

Answer 3

I was able to solve the problem by changing the version of buildToolsVersion to 29.0.2 and renderscriptTargetApi to 29 :

android {
    // ...
    buildToolsVersion '29.0.2'
    defaultConfig {
        // ...
        renderscriptTargetApi 29
        renderscriptSupportModeEnabled true
    }
    // ...
}

Answer 4

in my gradle module file I had:

renderscriptTargetApi 19
renderscriptSupportModeEnabled true

And, I had the following imports before migrating to AndroidX:

import android.support.v8.renderscript.Allocation;
import android.support.v8.renderscript.Element;
import android.support.v8.renderscript.Matrix4f;
import android.support.v8.renderscript.RenderScript;
import android.support.v8.renderscript.ScriptIntrinsicBlur;
import android.support.v8.renderscript.ScriptIntrinsicColorMatrix;
import android.support.v8.renderscript.ScriptIntrinsicConvolve3x3;

After migrating to AndroidX, just like the documentation says:

I kept the same statements on my gradle module file, but I upgraded to buildToolsVersion 29.0.2 and my compileSdkVersion to 28

I changed the previous imports to the following, and it all works.

import androidx.renderscript.Matrix4f;
import androidx.renderscript.RenderScript;
import androidx.renderscript.Allocation;
import androidx.renderscript.Element;
import androidx.renderscript.ScriptIntrinsicBlur;
import androidx.renderscript.ScriptIntrinsicColorMatrix;
import androidx.renderscript.ScriptIntrinsicConvolve3x3;

Answer 5

The marked answer does make it work, but as @Zee mentioned, it seems that the non-support regular renderscript removes 64-bit compatibility. Now I got a warning message from Google Play console about it when trying to publish my app. So I guess if we are still using renderscript, we will have to stay with support version and not migrate to AndroidX for now.

Answer 6

I fixed by adding proguard: I got answer from google supporter here

-keepclasseswithmembernames,includedescriptorclasses class * {
native <methods>;
}
# RenderScript to be safe on "native callback" side
-keep class androidx.renderscript.** { *; }

Answer 7

I had the same problem. The only thing that worked for me (after trying some of these), was updating to the latest build tools version (29.0.3) which I'm not sure existed when these question was originally posted:

buildToolsVersion '29.0.3'

Answer 8

android {
    //...
    defaultConfig {
        //...

        renderscriptTargetApi 21
        renderscriptSupportModeEnabled true
    }
}