What is the reason (java.io.IOException: No such file or directory)?

Question

I'm trying to write an audio stream to a file on the device. Permissions to read / write files are present in the manifest.

<permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

When I click on the corresponding button in the activation, to which the listener is attached, in which the method should work, I get the following exception:

  03-21 23:11:53.066 13790-13790/com.pro W/System.err: java.io.IOException: No such file or directory 03-21 23:11:53.067 13790-13790/com.pro W/System.err: at java.io.UnixFileSystem.createFileExclusively0(Native Method) 03-21 23:11:53.067 13790-13790/com.pro W/System.err: at java.io.UnixFileSystem.createFileExclusively(UnixFileSystem.java:280) 03-21 23:11:53.067 13790-13790/com.pro W/System.err: at java.io.File.createNewFile(File.java:948) 03-21 23:11:53.067 13790-13790/com.pro W/System.err: at com.pro.utils.AudioRecorder.createFile(AudioRecorder.java:226) 03-21 23:11:53.067 13790-13790/com.pro W/System.err: at com.pro.utils.AudioRecorder.<init>(AudioRecorder.java:188) 03-21 23:11:53.067 13790-13790/com.pro W/System.err: at com.pro.ui.activity.StationActivity$5.onClick(StationActivity.java:287) 03-21 23:11:53.067 13790-13790/com.pro W/System.err: at android.view.View.performClick(View.java:6199) 03-21 23:11:53.067 13790-13790/com.pro W/System.err: at android.view.View$PerformClick.run(View.java:23647) 03-21 23:11:53.067 13790-13790/com.pro W/System.err: at android.os.Handler.handleCallback(Handler.java:751) 03-21 23:11:53.067 13790-13790/com.pro W/System.err: at android.os.Handler.dispatchMessage(Handler.java:95) 03-21 23:11:53.067 13790-13790/com.pro W/System.err: at android.os.Looper.loop(Looper.java:154) 03-21 23:11:53.067 13790-13790/com.pro W/System.err: at android.app.ActivityThread.main(ActivityThread.java:6682) 03-21 23:11:53.067 13790-13790/com.pro W/System.err: at java.lang.reflect.Method.invoke(Native Method) 03-21 23:11:53.068 13790-13790/com.pro W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1520) 03-21 23:11:53.068 13790-13790/com.pro W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410) 03-21 23:11:53.068 13790-13790/com.pro W/System.err: java.io.FileNotFoundException: /storage/emulated/0/MyFirstApp/DFMDeep_20180321111153.mp3 (No such file or directory) 03-21 23:11:53.068 13790-13790/com.pro W/System.err: at java.io.FileOutputStream.open(Native Method) 03-21 23:11:53.068 13790-13790/com.pro W/System.err: at java.io.FileOutputStream.<init>(FileOutputStream.java:221) 03-21 23:11:53.068 13790-13790/com.pro W/System.err: at java.io.FileOutputStream.<init>(FileOutputStream.java:169) 03-21 23:11:53.069 13790-13790/com.pro W/System.err: at com.tequila.online.radio.pro.utils.AudioRecorder.<init>(AudioRecorder.java:191) 03-21 23:11:53.069 13790-13790/com.pro W/System.err: at com.tequila.online.radio.pro.ui.activity.StationActivity$5.onClick(StationActivity.java:287) 03-21 23:11:53.069 13790-13790/com.pro W/System.err: at android.view.View.performClick(View.java:6199) 03-21 23:11:53.069 13790-13790/com.pro W/System.err: at android.view.View$PerformClick.run(View.java:23647) 03-21 23:11:53.069 13790-13790/com.pro W/System.err: at android.os.Handler.handleCallback(Handler.java:751) 03-21 23:11:53.069 13790-13790/com.pro W/System.err: at android.os.Handler.dispatchMessage(Handler.java:95) 03-21 23:11:53.069 13790-13790/com.pro W/System.err: at android.os.Looper.loop(Looper.java:154) 03-21 23:11:53.069 13790-13790/com.pro W/System.err: at android.app.ActivityThread.main(ActivityThread.java:6682) 03-21 23:11:53.069 13790-13790/com.pro W/System.err: at java.lang.reflect.Method.invoke(Native Method) 03-21 23:11:53.069 13790-13790/com.pro W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1520) 03-21 23:11:53.069 13790-13790/com.pro W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410) 03-21 23:11:53.070 13790-13790/com.pro I/System.out: [http://uplink.181.fm:8026/;] : true

I submit the stream url to the method in StationActivity:

 button_rec.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { if (Streamer.getInstance().isPlaying()) { StationActivity.isRecording = true; AudioRecorder audioRecorder = new AudioRecorder(Streamer.getInstance().getStation().getStreams().toString(), StationActivity.context); button_rec.setImageResource(R.drawable.admin); System.out.println(Streamer.getInstance().getStation().getStreams().toString() + " : " + isRecording); } else if (StationActivity.isRecording && Streamer.getInstance().isPlaying()) { StationActivity.isRecording = false; button_rec.setImageResource(R.drawable.aboutus_menu); System.out.println(Streamer.getInstance().getStation().getStreams().toString() + " : " + isRecording); } } });

actually the class itself, to which everything is served:

  public class AudioRecorder { private Context context; MediaRecorder mMediaRecorder = null; @SuppressLint("StaticFieldLeak") private class AudioStreamRecordTask extends AsyncTask<Object, Void, FileOutputStream> { private FileOutputStream fileOutputStream; private AudioStreamRecordTask() { } protected FileOutputStream doInBackground(Object... params) { URL url; MalformedURLException e; FileNotFoundException e2; IOException e3; this.fileOutputStream = (FileOutputStream) params[0]; try { URL url2 = new URL(Streamer.getInstance().getStation().getStreams().toString()); try { BufferedInputStream bufferedInputStream = new BufferedInputStream(url2.openStream()); byte[] buffer = new byte[1024]; while (true) { int i; int bytesRead = bufferedInputStream.read(buffer); if (bytesRead > 0) { i = 1; } else { i = 0; } if ((i & ExoPlayer.STATE_READY) == 0) { break; } this.fileOutputStream.write(buffer, 0, bytesRead); } this.fileOutputStream.flush(); this.fileOutputStream.close(); url = url2; } catch (MalformedURLException e4) { e = e4; url = url2; } catch (FileNotFoundException e5) { e2 = e5; url = url2; } catch (IOException e6) { e3 = e6; url = url2; } } catch (MalformedURLException e7) { e = e7; e.printStackTrace(); return this.fileOutputStream; } return this.fileOutputStream; } protected void onPostExecute(Bitmap result) { } } public static class Transliterator { private Map<Character, String> charMap = null; public Transliterator() { init(); } private void init() { this.charMap = new HashMap(); this.charMap.put(Character.valueOf('\u0410'), "A"); ... this.charMap.put(Character.valueOf(' '), "_"); } public String transliterate(String string) { StringBuilder transliteratedString = new StringBuilder(); for (int i = 0; i < string.length(); i++) { Character ch = Character.valueOf(string.charAt(i)); String charFromMap = this.charMap.get(ch); if (charFromMap == null) { transliteratedString.append(ch); } else { transliteratedString.append(charFromMap); } } return transliteratedString.toString().toLowerCase(); } } public AudioRecorder(String stream_url, Context context) { FileNotFoundException e; FileOutputStream fileOutputStream; IOException e2; this.context = context; File stream_file = createFile(); if (stream_file != null) { try { FileOutputStream fileOutputStream2 = new FileOutputStream(stream_file); new AudioStreamRecordTask().execute(fileOutputStream2, stream_url); } catch (FileNotFoundException e5) { e = e5; e.printStackTrace(); } } } private File createFile() { File newSoundFile; Date dNow = new Date(); SimpleDateFormat ft = new SimpleDateFormat("yyyyMMddhhmmss", Locale.getDefault()); //Парсим название станции String filename = Streamer.getInstance().getStation().getName(); filename = (filename + "_" + ft.format(dNow) + ".mp3").replaceAll("\\s", ""); File path; String path2 = Environment.getExternalStorageDirectory() + "/" + "MyFirstApp/"; if (isSDPresent()) { path = new File(path2); if (!path.exists()) { path.mkdirs(); } newSoundFile = new File(path, filename); } else { path = new File(path2); if (!path.exists()) { path.mkdirs(); } newSoundFile = new File(path, filename); } if (newSoundFile.exists()) { newSoundFile.delete(); } try { newSoundFile.createNewFile(); } catch (IOException e) { e.printStackTrace(); } return newSoundFile; } private String generateFileName(String name) { return ""; } private static boolean isSDPresent() { return Environment.getExternalStorageState().equals("mounted"); } public static String getFileDuration(String filePath, Context context) { long duration = 0; MediaPlayer mp = new MediaPlayer(); try { mp.reset(); if (isSDPresent()) { mp.setDataSource(filePath); } else { mp.setDataSource(new FileInputStream(filePath).getFD()); } mp.prepare(); duration = (long) mp.getDuration(); } catch (IOException e) { e.printStackTrace(); } catch (IllegalArgumentException e2) { e2.printStackTrace(); } catch (IllegalStateException e3) { e3.printStackTrace(); } String out = ""; String seconds = String.valueOf((duration % 60000) / 1000); String minutes = String.valueOf(duration / 60000); if (seconds.length() == 1) { seconds = "0" + seconds; } if (minutes.length() == 1) { minutes = "0" + minutes; } return String.valueOf(minutes) + ":" + seconds; }}

Sergi sergi 1,007 2 9 · Answer 1 · 2018-03-21T20:56:19

You have the file /storage/emulated/0/MyFirstApp/DFMDeep_20180321111153.mp3 does not exist.
Probably, an error occurred while creating the file, which you safely drowned out with this code:

 try { newSoundFile.createNewFile(); } catch (IOException e) { e.printStackTrace(); }

IMHO, it's better not to do this, but to check what the error was, psim console output, or forward IOException above.

It is necessary not only to request in the manifest, but also to request permission before creating a file / folder.
Established a request for a button that itself and begins to run the method.
What is responsible for saving the file when recording is stopped?
I just when I run the method, it seems the stream is recording, but I can not stop it.
respectively, the created files in the folder have a weight of 0 bytes.
@Anton, remember once and for all: the streams must be closed ( close() ) in any case (written, read, not needed, an error occurred, the world ended ...).
The actual writing of data to disk occurs after calling flush() or close() , which in turn calls flush() .

Anton Anton 194 one 15 · Answer 2 · 2018-03-21T22:23:47

The problem was in the permissions. It is necessary not only to request in the manifest, but also to request permission before creating a file / folder. Established a request for a button, which itself and begins to run the method (record flow).

  //динамическое получение прав на WRITE_EXTERNAL_STORAGE if (checkSelfPermission(android.Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) { android.util.Log.d(TAG, "Permission is granted"); //что то делаем } else { android.util.Log.d(TAG, "Permission is revoked"); //запрашиваем разрешение ActivityCompat.requestPermissions(StationActivity.this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1); }

What is the reason (java.io.IOException: No such file or directory)?

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