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PORead file from "extsdcard"
 

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  1. PORead file from "extsdcard"
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    <p>I have some music in both sdcard and extsdcard</p> <p>I use Cursor to list them:</p> <pre><code>Uri deviceMusic = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI; String selection = MediaStore.Audio.Media.IS_MUSIC + " != 0"; String sortOrder = MediaStore.Audio.Media.DISPLAY_NAME; Cursor cursor = this.getContentResolver().query(deviceMusic, null, selection, null, sortOrder); if (cursor == null || cursor.isClosed()) { return; } // Get music information if (cursor.moveToFirst()) { // File path String data = cursor.getString(cursor .getColumnIndex(MediaStore.Audio.Media.DATA)); } while (cursor.moveToNext()); </code></pre> <p>then i use the code below to judge the type of music:</p> <pre><code>public static String getFileHeader(String filePath) { FileInputStream is = null; String value = null; try { is = new FileInputStream(filePath); byte[] b = new byte[3]; is.read(b, 0, b.length); value = bytesToHexString(b); } catch (Exception e) { e.printStackTrace(); } finally { if (null != is) { try { is.close(); } catch (IOException e) { } } } return value; } </code></pre> <p>this method works fine on sdcard, </p> <p>but encounter "FileNotFoundException" on extsdcard</p> <p>so i try to check the file with hard code:</p> <pre><code>File file = new File( "/storage/extSdCard/(I Can't Help) Falling In Love With You - UB 40.mp3"); if (file.exists()) { Log.i("", ""); } </code></pre> <p>it returns false when the above code in the loop of</p> <pre><code>while (cursor.moveToNext()) </code></pre> <p>but when i hard code in other place such as onCreate</p> <p>it return true...</p> <p>what's that situation?</p>
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    1. PTQuestion
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    1. USuser1531240
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    1. VO
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      1. PORead file from "extsdcard"
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      1. VTUpMod
    2. VO
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      1. USStErMi
      1. VTFavorite
    1. COhttp://developer.android.com/guide/topics/data/data-storage.html#filesExternal. check this don't use hardcoded paths
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      1. PORead file from "extsdcard"
      1. USRaghunandan
    2. COhardcoded paths is use for check the file in extsdcard is exist or not, my problem is, a file exist in extsdcard but return FileNotFoundException when in the loop but work fine out of the loop
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      1. PORead file from "extsdcard"
      1. USuser1531240
    3. COI have the same problem for (only) mp3's in extSdCard, in internal (sdcard) I've no problem. I get the mp3 path from the DATA column of the cursor as you but I cannot access to the mp3. How can I do?
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      1. PORead file from "extsdcard"
      1. USStErMi
 

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