相机意图返回空值

Question

我正在使用相机创建应用程序。意图在三星手机中返回空值。但它完全适用于索尼手机。我不知道那是什么问题。我的代码在这里。

Intent cameraIntent=new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
     fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE); 
     cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); 
     startActivityForResult(cameraIntent, CAMERA_REQUEST_CODE); 

public Uri getOutputMediaFileUri(int type) { 
     return Uri.fromFile(getOutputMediaFile(type)); 
    } 
    private static File getOutputMediaFile(int type) { 
     mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),IMAGE_DIRECTORY_NAME); 
     // Create the storage directory if it does not exist 
     if (!mediaStorageDir.exists()) { 
      if (!mediaStorageDir.mkdirs()) { 
       return null; 
      } 
     } 
     // Create a media file name 
     String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", 
       Locale.getDefault()).format(new Date()); 

     if (type == MEDIA_TYPE_IMAGE) { 
      mediaFile = new File(mediaStorageDir.getPath() + File.separator 
        + "IMG_" + timeStamp + ".jpg"); 
     } else { 
      return null; 
     } 
     Log.i("mediaFile",""+mediaFile); 
     return mediaFile; 
    } 

Answer 1

@Override 
public void onActivityResult(int requestCode, int resultCode, Intent data) { 
    if (requestCode == CAMERA_REQUEST_CODE&& resultCode == RESULT_OK) { 
     String[] projection = { MediaStore.Images.Media.DATA}; 
     Cursor cursor = managedQuery(mCapturedImageURI, projection, null, null, null); 
     int column_index_data = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA); 
     cursor.moveToFirst(); 
     String capturedImageFilePath = cursor.getString(column_index_data); 

    Toast.makeText(this, capturedImageFilePath, Toast.LENGTH_SHORT).show(); 

    } 

Answer 2

File sdImageMainDirectory = new File(root, ActivityConst.ENCYIMAGE); 
    Uri outputFileUri = Uri.fromFile(sdImageMainDirectory); 
    Intent intent = new Intent("android.media.action.IMAGE_CAPTURE"); 
    intent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri); 
    startActivityForResult(intent, CAMERA_CAPTURE); 

我下面这个在我的应用程序及其工作的罚款

Answer 3

我展示给双方的情况下

1）从相机拍摄照片

2）从gallary拍摄照片

试试这个工作一样的魅力与我

private String selectedImagePath = ""; 
    final private int PICK_IMAGE = 1; 
    final private int CAPTURE_IMAGE = 2; 

public Uri setImageUri() { 
     // Store image in dcim 
     File file = new File(Environment.getExternalStorageDirectory() + "/DCIM/", "image" + new Date().getTime() + ".png"); 
     Uri imgUri = Uri.fromFile(file); 
     this.imgPath = file.getAbsolutePath(); 
     return imgUri; 
    } 


    public String getImagePath() { 
     return imgPath; 
    } 

btnGallery.setOnClickListener(new OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       Intent intent = new Intent(); 
       intent.setType("image/*"); 
       intent.setAction(Intent.ACTION_GET_CONTENT); 
       startActivityForResult(Intent.createChooser(intent, ""), PICK_IMAGE); 

      } 
     }); 

     btnCapture.setOnClickListener(new OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       final Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); 
       intent.putExtra(MediaStore.EXTRA_OUTPUT, setImageUri()); 
       startActivityForResult(intent, CAPTURE_IMAGE); 
      } 
     }); 

@Override 
    protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
     if (resultCode != Activity.RESULT_CANCELED) { 
      if (requestCode == PICK_IMAGE) { 
       selectedImagePath = getAbsolutePath(data.getData()); 
       imgUser.setImageBitmap(decodeFile(selectedImagePath)); 
      } else if (requestCode == CAPTURE_IMAGE) { 
       selectedImagePath = getImagePath(); 
       imgUser.setImageBitmap(decodeFile(selectedImagePath)); 
      } else { 
       super.onActivityResult(requestCode, resultCode, data); 
      } 
     } 

    } 


public Bitmap decodeFile(String path) { 
     try { 
      // Decode image size 
      BitmapFactory.Options o = new BitmapFactory.Options(); 
      o.inJustDecodeBounds = true; 
      BitmapFactory.decodeFile(path, o); 
      // The new size we want to scale to 
      final int REQUIRED_SIZE = 70; 

      // Find the correct scale value. It should be the power of 2. 
      int scale = 1; 
      while (o.outWidth/scale/2 >= REQUIRED_SIZE && o.outHeight/scale/2 >= REQUIRED_SIZE) 
       scale *= 2; 

      // Decode with inSampleSize 
      BitmapFactory.Options o2 = new BitmapFactory.Options(); 
      o2.inSampleSize = scale; 
      return BitmapFactory.decodeFile(path, o2); 
     } catch (Throwable e) { 
      e.printStackTrace(); 
     } 
     return null; 

    } 

public String getAbsolutePath(Uri uri) { 
     String[] projection = { MediaColumns.DATA }; 
     @SuppressWarnings("deprecation") 
     Cursor cursor = managedQuery(uri, projection, null, null, null); 
     if (cursor != null) { 
      int column_index = cursor.getColumnIndexOrThrow(MediaColumns.DATA); 
      cursor.moveToFirst(); 
      return cursor.getString(column_index); 
     } else 
      return null; 
    }