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系统获取 CPU 位数

adb shell “cat /proc/cpuinfo”

processor       : 0        Processor       : AArch64 Processor rev 4 (aarch64)        model name      : AArch64 Processor rev 4 (aarch64)        BogoMIPS        : 26.00        Features        : fp asimd evtstrm aes pmull sha1 sha2 crc32        CPU implementer : 0x41        CPU architecture: 8        CPU variant     : 0x0        CPU part        : 0xd03        CPU revision    : 4

Processor : AArch64 Processor rev 4 (aarch64) 可以查看位数信息,包含aarch64即为64位

编码如下

public static boolean isCPU64(){        boolean result = false;        String mProcessor = null;        List
   
     list = null;        try {            mProcessor = getFieldFromCpuinfo("Processor");        } catch (IOException e) {            e.printStackTrace();        }        if (mProcessor != null) {            // D/CpuUtils: isCPU64 mProcessor = AArch64 Processor rev 4 (aarch64)            Log.d(TAG, "isCPU64 mProcessor = " + mProcessor);            //list =  Arrays.asList(mProcessor.split("\\s"));            if (mProcessor.contains("aarch64")) {                result = true;            }        }        return result;    }    /*  cat /proc/cpuinfo        processor       : 0        Processor       : AArch64 Processor rev 4 (aarch64)        model name      : AArch64 Processor rev 4 (aarch64)        BogoMIPS        : 26.00        Features        : fp asimd evtstrm aes pmull sha1 sha2 crc32        CPU implementer : 0x41        CPU architecture: 8        CPU variant     : 0x0        CPU part        : 0xd03        CPU revision    : 4    */    public static String getFieldFromCpuinfo(String field) throws IOException {        BufferedReader br = new BufferedReader(new FileReader("/proc/cpuinfo"));        Pattern p = Pattern.compile(field + "\\s*:\\s*(.*)");        try {            String line;            while ((line = br.readLine()) != null) {                Matcher m = p.matcher(line);                if (m.matches()) {                    return m.group(1);                }            }        } finally {            br.close();        }        return null;    }
   

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