FileNotFound當在Android中打開圖片時

我正在構建一個需要打開相機制作的圖片的應用程序。我跟着官方Android guide並沒有像他們說的，但我不斷收到此錯誤信息：FileNotFound當在Android中打開圖片時

Unable to decode stream: java.io.FileNotFoundException: file:/storage/emulated/0/Pictures/JPEG_test_-1259913402.jpg: open failed: ENOENT (No such file or directory)

我的代碼如下所示：

private void dispatchTakePictureIntent() { 
    Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
    // Ensure that there's a camera activity to handle the intent 
    if (takePictureIntent.resolveActivity(getPackageManager()) != null) { 
     // Create the File where the photo should go 
     File photoFile = null; 
     try { 
      photoFile = createImageFile(); 
     } catch (IOException ex) { 
      // Error occurred while creating the File 
      System.err.println("An error occurred: " + ex); 
     } 
     // Continue only if the File was successfully created 
     if (photoFile != null) { 
      takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photoFile)); 
      startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE); 
     } 
    } 
} 

@Override 
protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK) { 
     //try { 
      Bitmap imageBitmap = BitmapFactory.decodeFile(mCurrentPhotoPath); 
      System.out.println(imageBitmap); 
      testViewer.setImageBitmap(imageBitmap); 
      //bc = new BarDecoder(imageBitmap); 
     //} catch (NotFoundException | FormatException e){ 
      // System.err.println("An error occurred: " + e); 
     //} 
    } else { 
     System.out.println("Cancelled!"); 
    } 
} 

public void scanImage(View view){ 
    dispatchTakePictureIntent(); 
} 

private File createImageFile() throws IOException { 
    // Create an image file name 
    String timeStamp = "test"; 
    String imageFileName = "JPEG_" + timeStamp + "_"; 
    File storageDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES); 
    File image = File.createTempFile(
      imageFileName, /* prefix */ 
      ".jpg",   /* suffix */ 
      storageDir  /* directory */ 
    ); 

    // Save a file: path for use with ACTION_VIEW intents 
    mCurrentPhotoPath = "file:" + image.getAbsolutePath(); 
    System.out.println("Created!!"); 
    return image; 
}

我可以看到，畫面的確創建時使用文件瀏覽器，但我的應用程序無法找到它們。我還在我的清單文件中包含了這些權限：

<uses-feature android:name="android.hardware.camera" android:required="true" /> 
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> 
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

有什麼不對？

來源

2015-07-10 Pieter Verschaffelt

通過從mCurrentPhotoPath中刪除「file：」來修復此問題。 Android的官方指南說這是必要的，但顯然這是行不通的！

來源

2015-07-10 08:18:39

FileNotFound當在Android中打開圖片時

回答

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