CODEWITHSUNDEEP
android
damonkashu
damonkashu

Reputation: 1823

ImageView not refreshing/reflecting changes

I'm using a photo picker intent to choose an image and write it to an application-private file. Most of my important source code is shown below. Once I press a button and perform the first image selection intent, then it successfully updates the image view. However, once I press the image selection button again (in the same activity), then the image view does NOT update, unless I exit and restart the activity. So I know the image is getting successfully saved, but why would the ImageView in the layout not refresh or update?

public void onResume() {
    super.onResume();
    ImageView myImageView = (ImageView)findViewById(R.id.contact_image);
    if (hasImage) {
      myImageView.setImageURI(Uri.fromFile(getFileStreamPath(TEMP_PHOTO_FILE)));
    }
  }

  @Override
  public void onActivityResult(int requestCode, int resultCode, Intent data) {
    switch (requestCode) {
    case PHOTO_PICKED:
      if (resultCode == RESULT_OK) {
        if (data != null) {
          Bundle extras = data.getExtras();
          if (extras != null) {
            hasImage = true;
            bmp = (Bitmap) extras.get("data");
          }
        }
      }
      break;
    }
  }

  private OnClickListener mChooseImage = new OnClickListener() {
    @Override
    public void onClick(View v) {
      try {
        // Launch picker to choose photo for selected contact
        Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null);
        intent.setType("image/*");
        intent.putExtra("crop", "true");
        intent.putExtra("aspectX", 1);
        intent.putExtra("aspectY", 1);
        intent.putExtra("outputX", ICON_SIZE);  
        intent.putExtra("outputY", ICON_SIZE);
        intent.putExtra("scale", true);
        intent.putExtra("return-data", false);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(getTempFile()));
        intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());
        startActivityForResult(intent, PHOTO_PICKED);
      } catch (ActivityNotFoundException e) {
        // LOG THIS
      }
    }
  };

private File getTempFile() {
    try {
      if (!hasImage) {
        FileOutputStream fos = openFileOutput(TEMP_PHOTO_FILE, MODE_WORLD_WRITEABLE);
        fos.close();
      }
      return getFileStreamPath(TEMP_PHOTO_FILE);
    } catch (FileNotFoundException e) {
      // To be logged later
      return null;
    } catch (IOException e) {
      // To be logged later
      return null;
    }
  }

upon activity result, I set the ImageView's image URI to this file.

When it first completes, the ImageView changes to reflect this. However, if I attempt to choose the image again (same activity), the ImageView will not update until I exit and re-enter the activity. I'm not sure why this happens, is it because I'm trying to write to the temp.jpg everytime? Or do I need to refresh my layout somehow to reflect changes in the ImageView?

Upvotes: 22

Views: 30279

Answers (9)

AndroidNoob
AndroidNoob

Reputation: 23

If you are also setting the image using Glide then check if the url is setting up the image or not. If the Glide fails and sets the error Image then setImageURI won't change the image.

This happened in one of my projects. I though this might help someone.

Upvotes: 0

Vladimir Kyzominskiy
Vladimir Kyzominskiy

Reputation: 1

        UIView.transition(with: bannerImageView, duration: 0.3, options: [.transitionCrossDissolve], animations: { [weak self] in
            self?.exampleImageView.image = newImage
        })

Use this func in your view controller

Upvotes: 0

Mandeep Singh
Mandeep Singh

Reputation: 905

I would suggest this thing solution. After trying lot of solutions i found this one worked for me.

final Handler handler = new Handler();
                    handler.postDelayed(new Runnable() {
                        @Override
                        public void run() {
                            //Do something after 1000ms
                            ivProfilePic.setImageBitmap(bitImage);

                        }
                    }, 1000);

Upvotes: 0

Gastón Saillén
Gastón Saillén

Reputation: 13159

For me, it refreshed my ImageView with this

 @Override
    public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if (requestCode == PICK_PHOTO && resultCode == RESULT_OK && data != null && data.getData() != null) {

            filePath = data.getData();

            try {
                mProfilePic.setImageURI(null);
                mProfilePic.setImageURI(filePath);
                Bitmap imageBitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), filePath);

                mProfilePic.setImageBitmap(imageBitmap);

            } catch (IOException e) {
                e.printStackTrace();
            }
        }

    }

Upvotes: 0

tim4dev
tim4dev

Reputation: 2987

invalidate() not worked. Try hack :

    imageView.setImageURI(null);
    imageView.setImageURI(newUri);

Upvotes: 8

mdolanci
mdolanci

Reputation: 395

ImageView will not redraw if "new" URI is the same like old one. "View.invalidate()" will not work. To "force" update you can do:

public void onResume() {
  super.onResume();
  ImageView myImageView = (ImageView)findViewById(R.id.contact_image);
  if (hasImage) {
    myImageView.setImageDrawable(null); // <--- added to force redraw of ImageView
    myImageView.setImageURI(Uri.fromFile(getFileStreamPath(TEMP_PHOTO_FILE)));
  }
}

Upvotes: 20

Jay Matusow
Jay Matusow

Reputation: 19

I had a similar problem where I was using the devices camera to take a picture and then wanting the imageView in the original screen to refresh when I returned to it. The solution was to call View.invalidate() in onResume().

Upvotes: 1

claesv
claesv

Reputation: 2113

Judging by the ImageView source code, the ImageView won't reload the image if you call setImageURI with the same URI. You could try changing the URI by writing your image to another file.

Upvotes: 20

Barmaley
Barmaley

Reputation: 16363

To force redrawing your widget/View just call View.invalidate();

Upvotes: 1

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