Php直播源码，获取随机数，随机字符串

private void randomTest() {
    Random random = new Random();
    Log.e(TAG, "randomTest1: " + random.nextLong());
    Log.e(TAG, "randomTest2: " + random.nextBoolean());
    Log.e(TAG, "randomTest3: " + random.nextDouble());
    Log.e(TAG, "randomTest4: " + random.nextFloat());
    Log.e(TAG, "randomTest5: " + random.nextGaussian());//可以产生服从高斯分布的随机数
    Log.e(TAG, "randomTest6: " + random.nextInt());
    //范围内的随机数
    int min = 10;
    int max = 99;
    int num = random.nextInt(max - min + 1) + min;
    Log.e(TAG, "randomTest7: " + num);
}
/**
 * 获取一条随机字符串
 * @param length
 * @return
 */
public String getRandomString(int length) { //length表示生成字符串的长度
    String base = "abcdefghijklmnopqrstuvwxyz0123456789";
    Random random = new Random();
    StringBuffer sb = new StringBuffer();
    for (int i = 0; i < length; i++) {
        int number = random.nextInt(base.length());
        sb.append(base.charAt(number));
    }
    Log.e(TAG, "getRandomString: " + sb.toString());
    return sb.toString();
}