java.lang.RuntimeException：傳遞結果失敗ResultInfo {who = null，request = 0，result = -1，data = Intent {

我想在XMPP中發送帶有smack 4的文件，並且需要打開fileChooser，但不幸的是我得到了標題中的錯誤。我看到很多像這樣的錯誤堆棧，但不幸的是他們不能幫助我。java.lang.RuntimeException：傳遞結果失敗ResultInfo {who = null，request = 0，result = -1，data = Intent {

這是我的文件選擇：

private void showFileChooser() { 
    Intent intent = new Intent(Intent.ACTION_GET_CONTENT); 
    intent.setType("*/*"); 
    intent.addCategory(Intent.CATEGORY_OPENABLE); 
    try { 
     startActivityForResult(Intent.createChooser(intent, "Select a File to Upload"),FILE_SELECT_CODE); 
    } catch (android.content.ActivityNotFoundException ex) { 
     // Potentially direct the user to the Market with a Dialog 
    } 
}

這是我onActivityResult：

@Override 
protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    File source = null; 
    String filename = null; 
    switch (requestCode) { 
     case FILE_SELECT_CODE: 
      if (resultCode == RESULT_OK) { 
       final Uri uri = data.getData(); 
       try { 
        String src = getPath(ChatActivity.this, uri); 
        source = new File(Environment.getExternalStorageDirectory() + "/" + src); 
        filename = uri.getLastPathSegment(); 
       } catch (URISyntaxException e) { 
        e.printStackTrace(); 
       } 
    //================this is the Smack part of code : 
       final FileTransferManager manager = FileTransferManager.getInstanceFor(connection); 

// Create the outgoing file transfer 
       OutgoingFileTransfer transfer = manager.createOutgoingFileTransfer(user + "/" + roster.getPresenceResource(user)); 
       // Send the file 
       try { 
        transfer.sendFile(source,"Hi"); 
       } catch (SmackException e) { 
        e.printStackTrace(); 
       } 
//============Smack part finished 
      } 
      break; 
    } 
    super.onActivityResult(requestCode, resultCode, data); 
}

，這是我getPath方法：

public static String getPath(Context context, Uri uri) throws URISyntaxException { 

    String path = null; 
    String[] projection = { MediaStore.Files.FileColumns.DATA }; 
    @SuppressWarnings("deprecation") 
    Cursor cursor = context.getContentResolver().query(uri, projection, null, null, null); 

    if(cursor == null){ 
     path = uri.getPath(); 
    } 
    else{ 
     cursor.moveToFirst(); 
     int column_index = cursor.getColumnIndexOrThrow(projection[0]); 
     path = cursor.getString(column_index); 
     cursor.close(); 
    } 

    return ((path == null || path.isEmpty()) ? (uri.getPath()) : path);

最後這個錯誤報告：

01-14 23：24：09.099 12580-12580/finalproject.ffisher.com.finalproject E/AndroidRuntime：java.lang.RuntimeException：傳遞結果失敗ResultInfo {who = null，request = 0，result = -1 ，data = Intent {dat = content：//com.android.providers.downloads.documents/document/125 flg = 0x1}} to activity {finalproject.ffisher.com.finalproject/finalproject.ffisher.com.finalproject.ChatActivity} ：java.lang.IllegalArgumentException：無法讀取文件

請幫我解決這個問題。謝謝。

來源

2016-01-14 MHSFisher

您的getPath()對大多數Android設備和用戶來說是錯誤的。它僅適用於MediaStore的Uri值;你的Uri不是。

擺脫getPath()。使用ContentResolver和openInputStream()獲得Uri表示的內容InputStream。然後use sendStream()而不是sendFile()與您的OutgoingFileTransfer對象。

來源

2016-01-14 20:12:17 CommonsWare

謝謝。但你會介意更多關於'ContentResolver'和'openInputStream（）'的解釋以及如何使用它們？請給我一點線索。十分感謝 – MHSFisher

java.lang.RuntimeException：傳遞結果失敗ResultInfo {who = null，request = 0，result = -1，data = Intent {

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