NewFromFD失敗nativeDecodeFileDescriptor - Android 4.4

我已經使用Android示例項目ContactsList（http://developer.android.com/shareables/training/ContactsList.zip）作爲示例在我的應用程序中開發contacts Activity。它是在所有的Android版本完美的工作，但是在Android 4.4系統沒有被加載的接觸圖像，我得到以下錯誤：NewFromFD失敗nativeDecodeFileDescriptor - Android 4.4

NewFromFD failed in nativeDecodeFileDescriptor

在執行這種方法會出現這種情況：

BitmapFactory.decodeFileDescriptor(fileDescriptor, null, options);

並且它總是返回null。

爲了得到文件描述符本身我用這個方法：

private Bitmap loadContactPhotoThumbnail(String photoData, int imageSize) { 
    if (!isAdded() || getActivity() == null) { 
     return null; 
    } 

    AssetFileDescriptor afd = null; 
    try { 
     Uri thumbUri; 

     if (Utils.hasHoneycomb()) { 
      thumbUri = Uri.parse(photoData); 
      Log.d("imageloader", photoData); 
     } else { 
      final Uri contactUri = Uri.withAppendedPath(Contacts.CONTENT_URI,photoData); 

      thumbUri = Uri.withAppendedPath(contactUri, Photo.CONTENT_DIRECTORY); 
     } 

     afd = getActivity().getContentResolver().openAssetFileDescriptor(thumbUri, "r"); 
     Log.d("imageloader", afd.toString()); 

     FileDescriptor fileDescriptor = null; 

     try{ 
      fileDescriptor = afd.getFileDescriptor(); 
      Log.d("imageloader", fileDescriptor.toString()); 
     } catch (NullPointerException e){ 
      e.printStackTrace(); 
     } 

     if (fileDescriptor != null) { 
      return ImageLoader.decodeSampledBitmapFromDescriptor(
        fileDescriptor, imageSize, imageSize); 
     } 
    } catch (FileNotFoundException e) { 

     if (BuildConfig.DEBUG) { 
      Log.d(TAG, "Contact photo thumbnail not found for contact " + photoData 
        + ": " + e.toString()); 
     } 
    } finally { 
     if (afd != null) { 
      try { 
       afd.close(); 
      } catch (IOException e) { 

      } 
     } 
    } 

    return null; 
}

和photoData是Contacts.PHOTO_THUMBNAIL_URI從ContactsContract.Contacts.CONTENT_URI拍攝。

這裏是提到的代碼的日誌輸出的某些部分：

12-09 21:15:04.683: D/ImageCache(12531): Memory cache created (size = 6554) 
12-09 21:15:05.024: D/ImageLoader(12531): doInBackground - starting work 
12-09 21:15:05.024: D/imageloader(12531): content://com.android.contacts/contacts/296/photo 
12-09 21:15:05.034: D/imageloader(12531): {AssetFileDescriptor: {ParcelFileDescriptor: FileDescriptor[54]} start=0 len=-1} 
12-09 21:15:05.034: D/imageloader(12531): FileDescriptor[54] 
12-09 21:15:05.044: D/ImageLoader(12531): doInBackground - finished work 
12-09 21:15:05.044: D/ImageLoader(12531): doInBackground - starting work 
12-09 21:15:05.054: D/imageloader(12531): content://com.android.contacts/contacts/300/photo 
12-09 21:15:05.064: D/imageloader(12531): {AssetFileDescriptor: {ParcelFileDescriptor: FileDescriptor[54]} start=0 len=-1} 
12-09 21:15:05.064: D/imageloader(12531): FileDescriptor[54] 
12-09 21:15:05.074: D/ImageLoader(12531): doInBackground - finished work 
12-09 21:15:05.084: D/ImageLoader(12531): doInBackground - starting work 
12-09 21:15:05.084: D/imageloader(12531): content://com.android.contacts/contacts/318/photo 
12-09 21:15:05.114: D/imageloader(12531): {AssetFileDescriptor: {ParcelFileDescriptor: FileDescriptor[54]} start=0 len=-1} 
12-09 21:15:05.114: D/imageloader(12531): FileDescriptor[54] 
12-09 21:15:05.114: D/ImageLoader(12531): doInBackground - finished work 
12-09 21:15:05.114: D/ImageLoader(12531): doInBackground - starting work 
12-09 21:15:05.114: D/imageloader(12531): content://com.android.contacts/contacts/319/photo 
12-09 21:15:05.124: D/imageloader(12531): {AssetFileDescriptor: {ParcelFileDescriptor: FileDescriptor[54]} start=0 len=-1} 
12-09 21:15:05.124: D/imageloader(12531): FileDescriptor[54] 
12-09 21:15:05.124: D/ImageLoader(12531): doInBackground - finished work 
12-09 21:15:05.124: D/ImageLoader(12531): doInBackground - starting work 
12-09 21:15:05.124: D/imageloader(12531): content://com.android.contacts/contacts/320/photo 
12-09 21:15:05.144: D/imageloader(12531): {AssetFileDescriptor: {ParcelFileDescriptor: FileDescriptor[54]} start=0 len=-1} 
12-09 21:15:05.144: D/imageloader(12531): FileDescriptor[54] 
12-09 21:15:05.144: D/ImageLoader(12531): doInBackground - finished work 
12-09 21:15:05.144: D/ImageLoader(12531): doInBackground - starting work 
12-09 21:15:05.144: D/imageloader(12531): content://com.android.contacts/contacts/302/photo 
12-09 21:15:05.154: D/imageloader(12531): {AssetFileDescriptor: {ParcelFileDescriptor: FileDescriptor[55]} start=0 len=-1} 
12-09 21:15:05.154: D/imageloader(12531): FileDescriptor[55] 
12-09 21:15:05.154: D/ImageLoader(12531): doInBackground - finished work 
12-09 21:15:05.164: D/ImageLoader(12531): doInBackground - starting work 
12-09 21:15:05.164: D/imageloader(12531): content://com.android.contacts/contacts/301/photo 
12-09 21:15:05.164: D/imageloader(12531): {AssetFileDescriptor: {ParcelFileDescriptor: FileDescriptor[55]} start=0 len=-1} 
12-09 21:15:05.164: D/imageloader(12531): FileDescriptor[55] 
12-09 21:15:05.174: D/ImageLoader(12531): doInBackground - finished work 
12-09 21:15:05.174: D/ImageLoader(12531): doInBackground - starting work 
12-09 21:15:05.174: D/imageloader(12531): content://com.android.contacts/contacts/304/photo 
12-09 21:15:05.184: D/imageloader(12531): {AssetFileDescriptor: {ParcelFileDescriptor: FileDescriptor[55]} start=0 len=-1} 
12-09 21:15:05.184: D/imageloader(12531): FileDescriptor[55] 
12-09 21:15:05.184: D/ImageLoader(12531): doInBackground - finished work

任何人可以幫助我解決這個問題，好嗎？

來源

2013-12-09 Andranik

用你的代碼中包含的日誌輸出顯示你的日誌。 –

我已經更新了我的代碼幷包含了與這部分代碼相關的日誌部分。請告訴你是否需要我記錄其他變量。 – Andranik

我有同樣的問題，雖然我不知道是什麼問題，但我發現了一個解決方案，它適用於KitKat & JellyBean（4.2.2）。您只需將文件打開爲InputStream而不是AssetFileDescriptor即可。我用這個代碼：

private Bitmap loadContactPhotoThumbnail(String photoData) { 
    InputStream is = null; 
    try { 
     Uri thumbUri; 
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) { 
      thumbUri = Uri.parse(photoData); 
     } else { 
      final Uri contactUri = Uri.withAppendedPath(
        Contacts.CONTENT_URI, photoData); 
      thumbUri = Uri.withAppendedPath(contactUri, Contacts.Photo.CONTENT_DIRECTORY); 
     } 

     is = getContentResolver().openInputStream(thumbUri); 

     if (is != null) { 
      return BitmapFactory.decodeStream(is); 
     } 
    } catch (FileNotFoundException e) { 
     e.printStackTrace(); 
    } finally { 
     if (is != null) { 
      try { 
       is.close(); 
      } catch (IOException e) { 
       e.printStackTrace(); 
      } 
     } 
    } 
    return null; 
}

它，你可以找到在Display contact badge相同的代碼，唯一的改變是，它使用InputStream。

來源

2013-12-10 11:30:41 pshegger

非常感謝！這個解決方案也適用於我。我已經測試了Android 4.4和Android 2.3.3，並且它工作正常。我認爲它也適用於它們之間的所有版本。 – Andranik

除了在三星設備上運行良好（在S4和Tab 3上測試） – behelit

NewFromFD失敗nativeDecodeFileDescriptor - Android 4.4

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