android将so打到jar包中并运行

加载so有两种方法

System.load() 和System.loadLibrary(); 前者需传入库文件的绝对路径，后者只需传入库文件名。

首先我的jar包目录如下：

Loader是加载类：

 static {
        try {
            InputStream is = null;
            if(isCPUInfo64()) {
                is = Loader.class.getResource("arm64/libhellojni.so").openStream();
            }else {
                is = Loader.class.getResource("arm32/libhellojni.so").openStream();
            }
            File tempFile = File.createTempFile("hellojni", ".so");
            FileOutputStream fos = new FileOutputStream(tempFile);
            int i;
            byte[] buf = new byte[1024];
            while ((i = is.read(buf)) != -1) {
                fos.write(buf, 0, i);
            }
            is.close();
            fos.close();
            System.load(tempFile.getAbsolutePath());
            tempFile.deleteOnExit();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

private static boolean isCPUInfo64() {
        File cpuInfo = new File("/proc/cpuinfo");
        if (cpuInfo != null && cpuInfo.exists()) {
            InputStream inputStream = null;
            BufferedReader bufferedReader = null;
            try {
                inputStream = new FileInputStream(cpuInfo);
                bufferedReader = new BufferedReader(new InputStreamReader(inputStream), 512);
                String line = bufferedReader.readLine();
                if (line != null && line.length() > 0 && line.toLowerCase(Locale.US).contains("arch64")) {
                    return true;
                } else {
                    return false;
                }
            } catch (Throwable t) {
                Log.d("isCPUInfo64", " error = " + t.toString());
            } finally {
                try {
                    if (bufferedReader != null) {
                        bufferedReader.close();
                    }
                    if (inputStream != null) {
                        inputStream.close();
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
        return false;
    }