Android代码执行adb shell命令

好久没写随笔了，几乎忘记了这个技术点，今天特地记录下：

前提：有系统root权限

方法一：

new Thread(new Runnable() {
    @Override
    public void run() {
        String content = "";
        BufferedReader reader = null;
        InputStream is = null;
        try {
            java.lang.Process process = Runtime.getRuntime().exec("adb shell ps | grep NAG");
            is = process.getInputStream();
            reader = new BufferedReader(new InputStreamReader(is));
            StringBuffer output = new StringBuffer();
            int read;
            char[] buffer = new char[4096];
            while ((read = reader.read(buffer)) > 0) {
                output.append(buffer, 0, read);
            }
            content = output.toString();
            VoiceLog.logInfo(TAG, "checkNagNew content " + content);
        } catch (Exception e) {
            e.printStackTrace();
            VoiceLog.logInfo(TAG, "read logcat process failed. message: " + e.getMessage());
        } finally {
            if (null != is) {
                try {
                    is.close();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
            if (reader != null) {
                try {
                    reader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}).start();


方法二：

new Thread(new Runnable() {
    @Override
    public void run() {
        FileOutputStream os = null;
        Process p = null;
        try {
            p = Runtime.getRuntime().exec("adb shell ps | grep NAG");
            InputStream is = p.getInputStream();
            os = new FileOutputStream("/sdcard/00.log");
            int len = 0;
            byte[] buf = new byte[1024];
            while ((-1 != (len = is.read(buf)))) {
                os.write(buf, 0, len);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }finally {
            try {
                os.flush();
                os.close();
            }catch (Exception e){
                e.printStackTrace();
            }

        }
    }
}).start();

PS： 命令要加adb shell， 不然打印结果是不会出来的