android获取系统信息

连接手机，adb shell 进入 Android Shell 模式，输入 getprop 获取系统属性值

通过上面方法拿到属性名，然后通过下面方法获取到系统的属性值

/**
 * 获取build.prop文件中的某个属性
 *
 * @param propName 属性名称
 * @return 属性值
 */
public static String getSystemProperty(String propName) {

    Log.i(LOG_TAG, "getSystemProperty in time: " + System.currentTimeMillis());
    String line;
    BufferedReader input = null;
    try {
        Process p = Runtime.getRuntime().exec("getprop " + propName);
        input = new BufferedReader(
                new InputStreamReader(p.getInputStream()), 1024);
        line = input.readLine();
        input.close();
    } catch (Exception ex) {
        Log.e(LOG_TAG, "Unable to read sysprop " + propName, ex);
        return null;
    } finally {
        if (input != null) {
            try {
                input.close();
            } catch (Exception e) {
                Log.e(LOG_TAG, "Exception while closing InputStream", e);
            }
        }
    }

    Log.i(LOG_TAG, "getSystemProperty out time: " + System.currentTimeMillis());

    return line;
}