将录制的音频与现有的mp3文件合并android

Question

我正在学习android开发，并尝试使用诸如snapchat或Facebook之类的背景声音制作脸部过滤器。但是在使用耳机时，我无法用用户声音录制播放音频。

请帮忙！或一些可用于我的链接

Answer 1

import java.io.*; 
public class TwoFiles 
{ 
    public static void main(String args[]) throws IOException 
    { 
     FileInputStream fistream1 = new FileInputStream("C:\\Temp\\1.mp3"); // first source file 
     FileInputStream fistream2 = new FileInputStream("C:\\Temp\\2.mp3");//second source file 
     SequenceInputStream sistream = new SequenceInputStream(fistream1, fistream2); 
     FileOutputStream fostream = new FileOutputStream("C:\\Temp\\final.mp3");//destinationfile 

     int temp; 

     while((temp = sistream.read()) != -1) 
     { 
      // System.out.print((char) temp); // to print at DOS prompt 
      fostream.write(temp); // to write to file 
     } 
     fostream.close(); 
     sistream.close(); 
     fistream1.close(); 
     fistream2.close(); 
    } 
}