How to obtain the current ABI of the app?

Question

Looks like Build.CPU_ABI is deprecated in favor of Build.SUPPORTED_ABIS. However, how do I find out the ABI that is currently being used by my app?

For example, my tablet supports x86 first and armeabi-v7a next. However, the native library that is packaged is in lib/armeabi-v7a directory. There is no lib/x86 directory in the apk. If I had no native libraries at all, the device would have used x86 ABI. However, given that the native library is present and is only armeabi-v7a type, the app has to fall back to armeabi-v7a ABI.

So how do I programatically determine which ABI my app is currently running in? Does Build.SUPPORTED_ABIS automatically reorder the list? Regards.

Perhaps there's a better way, but you could have a function in your native code that uses the cpufeatures library and maps that information to one of the ABI names. — Michael

Sabish.M Sabish.M · Accepted Answer · 2016-09-16T09:04:18

Use this in java

System.getProperty("os.arch")

or in c++

 char arch_info[11] = "";

    // checking if CPU is of ARM family or not
    if (android_getCpuFamily() == ANDROID_CPU_FAMILY_ARM) {
        strcpy(arch_info, "ARM");

        // checking if CPU is ARM v7 or not
        uint64_t cpuFeatures = android_getCpuFeatures();
        if ((cpuFeatures & ANDROID_CPU_ARM_FEATURE_ARMv7) != 0) {
            strcat(arch_info, " v7");

            // checking if CPU is ARM v7 Neon
            if((cpuFeatures & ANDROID_CPU_ARM_FEATURE_NEON) != 0) {
                strcat(arch_info, "-neon");
            }
        }
    }

How to obtain the current ABI of the app?

2 Answers