whether OS is in dalvik runtime - Android Android OS

Android examples for Android OS:OS Build

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Description

whether OS is in dalvik runtime

Demo Code


//package com.java2s;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class Main {
    /**//w  w  w.  ja v  a 2  s . co m
     * whether is in dalvik runtime
     */
    public static boolean isDalvik() {
        return "Dalvik".equals(getCurrentRuntimeValue());
    }

    /**
     * get current runtime
     *
     * @return Dalvik, ART, ART debug build
     */
    public static String getCurrentRuntimeValue() {
        try {
            Class<?> systemProperties = Class
                    .forName("android.os.SystemProperties");
            try {
                Method get = systemProperties.getMethod("get",
                        String.class, String.class);
                if (get == null) {
                    return "WTF?!";
                }
                try {
                    final String value = (String) get.invoke(
                            systemProperties, "persist.sys.dalvik.vm.lib",
                            /* Assuming default is */
                            "Dalvik");
                    if ("libdvm.so".equals(value)) {
                        return "Dalvik";
                    } else if ("libart.so".equals(value)) {
                        return "ART";
                    } else if ("libartd.so".equals(value)) {
                        return "ART debug build";
                    }
                    return value;
                } catch (IllegalAccessException e) {
                    return "IllegalAccessException";
                } catch (IllegalArgumentException e) {
                    return "IllegalArgumentException";
                } catch (InvocationTargetException e) {
                    return "InvocationTargetException";
                }
            } catch (NoSuchMethodException e) {
                return "SystemProperties.get(String key, String def) method is not found";
            }
        } catch (ClassNotFoundException e) {
            return "SystemProperties class is not found";
        }
    }
}

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