Java 合并mp3文件FileNotFoundException
我需要合并2个mp3文件(端到端,而不是混合在一起)。这些文件位于我的res/raw文件夹中。当我使用Media Player播放它们时,它们会工作,但当我尝试合并它们时,会出现以下错误:Java 合并mp3文件FileNotFoundException,java,android,Java,Android,我需要合并2个mp3文件(端到端,而不是混合在一起)。这些文件位于我的res/raw文件夹中。当我使用Media Player播放它们时,它们会工作,但当我尝试合并它们时,会出现以下错误: java.io.FileNotFoundException: /android.content.res.AssetManager$AssetInputStream@65561058: open failed: ENOENT (No such file or directory) 我已经试了几个小时了。我想我
java.io.FileNotFoundException: /android.content.res.AssetManager$AssetInputStream@65561058: open failed: ENOENT (No such file or directory)
我已经试了几个小时了。我想我一定是提供了格式错误的FileInputStream之类的,但问题似乎出在其他地方,包括找不到文件或不允许访问目录之类的。我知道在这个网站上有很多类似的问题,但是我看了无数的问题,仍然没有找到解决办法
代码如下:
Handler handler=new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
File first = new File(getResources().openRawResource(R.raw.file101).toString());
File second = new File(getResources().openRawResource(R.raw.file103).toString());
String filepath = Environment.getExternalStorageDirectory().getPath();
File file = new File(filepath, "myapp");
mergeSongs(new File(file.getAbsoluteFile()+"/mergedFile.mp3"), new File[] {first, second});
}
},2000);
private void mergeSongs(File mergedFile,File...mp3Files){
try {
FileInputStream fis1 = new FileInputStream(mp3Files[0]); //Error is at this line
FileInputStream fis2 = new FileInputStream(mp3Files[1]);
Toast.makeText(MainActivity.this, mp3Files[0].toString()+mp3Files[1].toString(), Toast.LENGTH_LONG).show();
SequenceInputStream sis = new SequenceInputStream(fis1,fis2);
if(!mergedFile.exists()){
mergedFile.createNewFile();}
FileOutputStream fos = new FileOutputStream(mergedFile);
int temp;
while ((temp = sis.read())!= -1){
fos.write((byte)temp);
}
fis1.close();
fis2.close();
sis.close();
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
新错误:
11-11 11:46:14.180: W/System.err(23975): java.io.IOException: open failed: ENOENT (No such file or directory)
11-11 11:46:14.180: W/System.err(23975): at java.io.File.createNewFile(File.java:946)
11-11 11:46:14.180: W/System.err(23975): at com.myapp.MainActivity.mergeSongs(MainActivity.java:311)
11-11 11:46:14.180: W/System.err(23975): at com.myapp.MainActivity.access$7(MainActivity.java:300)
11-11 11:46:14.180: W/System.err(23975): at com.myapp.MainActivity$8.run(MainActivity.java:290)
11-11 11:46:14.180: W/System.err(23975): java.io.IOException: open failed: ENOENT (No such file or directory)
11-11 11:46:14.180: W/System.err(23975): at java.io.File.createNewFile(File.java:946)
11-11 11:46:14.180: W/System.err(23975): at com.myapp.MainActivity.mergeSongs(MainActivity.java:311)
11-11 11:46:14.180: W/System.err(23975): at com.myapp.MainActivity.access$7(MainActivity.java:300)
11-11 11:46:14.180: W/System.err(23975): at com.myapp.MainActivity$8.run(MainActivity.java:290)
将文件InputStreams更改为InputStreams,并按如下方式获取它们: InputStream=getResources().openRawResource(R.raw.file101) 新错误:
11-11 11:46:14.180: W/System.err(23975): java.io.IOException: open failed: ENOENT (No such file or directory)
11-11 11:46:14.180: W/System.err(23975): at java.io.File.createNewFile(File.java:946)
11-11 11:46:14.180: W/System.err(23975): at com.myapp.MainActivity.mergeSongs(MainActivity.java:311)
11-11 11:46:14.180: W/System.err(23975): at com.myapp.MainActivity.access$7(MainActivity.java:300)
11-11 11:46:14.180: W/System.err(23975): at com.myapp.MainActivity$8.run(MainActivity.java:290)
11-11 11:46:14.180: W/System.err(23975): java.io.IOException: open failed: ENOENT (No such file or directory)
11-11 11:46:14.180: W/System.err(23975): at java.io.File.createNewFile(File.java:946)
11-11 11:46:14.180: W/System.err(23975): at com.myapp.MainActivity.mergeSongs(MainActivity.java:311)
11-11 11:46:14.180: W/System.err(23975): at com.myapp.MainActivity.access$7(MainActivity.java:300)
11-11 11:46:14.180: W/System.err(23975): at com.myapp.MainActivity$8.run(MainActivity.java:290)
谢谢你的回复!有了这个新代码,我得到了相同的错误,但在不同的地方。现在我在mergedFile.createNewFile()行中得到了错误。有什么想法吗?请发布异常。实际上,我尝试了-Log.d(“mergedFile”,mergedFile.toString());它显示/storage/emulated/0/myapp/mergedFile.mp3使用以下命令:创建文件