解析：無法上傳文件

我想製作一個具有上傳文件功能的應用程序。但問題是，我無法找到我做錯的地方。解析：無法上傳文件

首先，選擇文件

public void onClick(View arg0) { 

      Intent intent = new Intent(Intent.ACTION_GET_CONTENT); 
      intent.setType("*/*"); 
      // intent.addCategory(Intent.CATEGORY_OPENABLE); 

      try { 
       Log.d(TAG, "Select file"); 
       startActivityForResult(
         Intent.createChooser(intent, "Select a File to Upload"), 
         RESULT_LOAD_FILE); 
      } catch (android.content.ActivityNotFoundException ex) { 
       // Potentially direct the user to the Market with a Dialog 
       Toast.makeText(MainActivity.this, "Please install a File Manager.", Toast.LENGTH_SHORT).show(); 
      } 

      // here 
     }

我想選擇基礎上的logcat文件時沒有任何問題。但是......

public void onActivityResult(int requestCode, int resultCode, Intent data) 
{ 
    super.onActivityResult(requestCode, resultCode, data); 
    Log.d(TAG, requestCode+"/"+RESULT_LOAD_FILE+"/"+resultCode+"/"+RESULT_OK); 

    if (data != null) Log.d(TAG, data.toString()); 
    else Log.d(TAG, "data null"); 

    // get file name 
    String fileNameSegments[] = filePath.split("/"); 
    fileName = fileNameSegments[fileNameSegments.length - 1]; 

    // convert it to byte 
    byte[] fileByte = fileName.getBytes(); 

    // Create the ParseFile 
    ParseFile file = new ParseFile(fileName, fileByte); 

    // Upload the image into Parse Cloud 
    file.saveInBackground(); 

    // Create a New Class called "ImageUpload" in Parse 
    ParseObject fileupload = new ParseObject("FileUpload"); 

    // Create a column named "ImageName" and set the string 
    fileupload.put("FileName", fileName); 

    // Create a column named "ImageFile" and insert the image 
    fileupload.put("DocFile", file); 

    // Create the class and the columns 
    fileupload.saveInBackground(); 

    // Show a simple toast message 
    Toast.makeText(MainActivity.this, "File Uploaded", Toast.LENGTH_SHORT).show(); 
}

-1分別RESULT_LOAD_FILE，resultCode和RESULT_OK 1,1和-1的logcat秀requestCode。並且數據不爲空，如在logcat中：Intent { dat=content://com.android.externalstorage.documents/document/0A09-1112:Download/Contact n Tort.pdf flg=0x1 }

當我單擊.pdf文件後，它觸發了敬酒Something went wrong但我無法找到原因。

編輯：擲空指針異常的文件路徑轉換後的字節，當我刪除try catch塊

來源

2015-10-19 August

提出異常的消息是什麼？ –

@MoNazemi失敗將結果ResultInfo {who = null，request = 1，result = -1，data = Intent {dat = content：..........}}傳遞給activity {com.example .. ......... MainActivity}：java.lang.NullPointerException：嘗試調用空對象上的虛擬方法'java.lang.String [] java.lang.String.split（java.lang.String）'參考' – August

那麼它說變量'filePath'爲空，你在哪裏初始化？ –

它應該是這樣的

Uri uri = data.getData(); 
      // get path 
      filePath = uri.getPath(); 

      // get file name 
      String fileNameSegments[] = filePath.split("/"); 
      fileName = fileNameSegments[fileNameSegments.length - 1]; 

      // convert it to byte 
      byte[] fileByte = fileName.getBytes(); 

      // Create the ParseFile 
      ParseFile file = new ParseFile(fileName, fileByte); 

      // Upload the file into Parse Cloud 
      file.saveInBackground(); 

      // Create a New Class called "FileUpload" in Parse 
      ParseObject fileUpload = new ParseObject("FileUpload"); 

      // Create a column named "FileName" and set the string 
      fileUpload.put("FileName", fileName); 

      Log.d(TAG, "image file"); 
      // Create a column named "ImageFile" and insert the image 
      fileUpload.put("DocFile", file); 

      // Create the class and the columns 
      fileUpload.saveInBackground(); 

      Log.d(TAG, "toast"); 
      // Show a simple toast message 
      Toast.makeText(MainActivity.this, "File Uploaded", 
        Toast.LENGTH_SHORT).show();

雖然不是創建的類在解析儀表板，但我想這需要另一個職位。

來源

2015-10-20 05:10:59 August

解析：無法上傳文件

回答

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