Image not setting in ImageView after taking picture from Camera

Question

I've have develop my own camera app for mandatory configuration, when i try to show the captured image in next activity which displays whether to save it or not?

I'm not able to fetch the image which i captured and displays on my ImageView. I'm absolutely getting absPathUri with proper path.

Code snippets:-

imgView = (ImageView)findViewById(R.id.picView);
Bundle b= getIntent().getExtras();
absPathUri = Uri.parse(b.getString("URI"));
Toast.makeText(getApplicationContext(), ""+absPathUri, Toast.LENGTH_SHORT).show();
if(absPathUri!=null)
{
    sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE));
    imgView.setImageURI(absPathUri);
}

On Further dive in the reason why I'm unable to set the ImageView, throws the Null Pointer Exception which is due to File Not Found. If applicatoin is in debug mode it displays the proper Image on ImageView. It seems that mediaStore get Refreshed till the debugging hits.

File imgFile = new  File(getPath(absPathUri));
Toast.makeText(getApplicationContext(), "ImageFile Exists"+imgFile.exists(), Toast.LENGTH_SHORT).show();
if(imgFile.exists())
 {
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
imgView.setImageBitmap(myBitmap);
}

  public String getPath(Uri photoUri) {

    String filePath = "";
    if (photoUri != null) {
        String[] filePathColumn = { MediaStore.Images.Media.DATA };
        try
        {

            Cursor cursor = getContentResolver().query(photoUri,
                    filePathColumn, null, null, null);
            cursor.moveToFirst();
            int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
            filePath = cursor.getString(columnIndex);
            cursor.close();
        }catch(Exception e)
        {
        Toast.makeText(getApplicationContext(), ""+e, Toast.LENGTH_SHORT).show();   
        }
    }
    return filePath;
}

Tried Solution:-

sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE));

Can anybody guide me where I'm getting wrong in displaying Image on ImageView?

Answer 1

As suggested by gnuanu, setImageURI() is not better to use as reading and decoding on the UI thread, which can cause a latency hiccup.

Better to use the following:-

setImageDrawable(android.graphics.drawable.Drawable) or setImageBitmap(android.graphics.Bitmap) and BitmapFactory instead.

Still these methods didn't solve my problem. As I was taking Picture with Camera and onClick of it sending to Next Activity which may cause latency hiccups.

So better to pass to another activity after some peroid of time . . just a sec is totally convient to get through it.

Snippet which solve my issue:-

final Intent picIntent = new Intent(CameraActivity.this,PicSaveActivity.class);
picIntent.putExtra("URI", pathUri.toString());
Handler handler = new Handler() 
{
public void handleMessage(Message msg) {
    startActivityForResult(picIntent, PICTAKEN);
    };
};
 Message msg = handler.obtainMessage();
 handler.sendMessageDelayed(msg, 1000);

In Next Activity, catch the URI and rotate the Image as it would be in landscape mode.

 if(absPathUri!=null)
{
    Bitmap myImg = BitmapFactory.decodeFile(absPathUri.getPath());
    Matrix matrix = new Matrix();
    matrix.postRotate(90);
    Bitmap rotated = Bitmap.createBitmap(myImg, 0, 0, myImg.getWidth(), myImg.getHeight(),
            matrix, true);
    imgView.setImageBitmap(rotated);
    }

Answer 2

The reference clearly states: The path to the file is contained in the Intent.mData field.

Therefore, you need

sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, absPathUri));

You probably also need to let the broadcast complete before you get the results; using

imgView.post(new Runnable() { public void run() { imgView.setImageURI(absPathUri); } }

should suffice.

Answer 3

I don't really know what's wrong in your code, and my answer uses a completely different approach to taking a photo with the camera and displaying it in an ImageView, but it's a working solution that might help you.

In your first Activity (call it CameraActivity), you can do the following:

import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;

public class CameraActivity extends PortraitActivity {
  private static final int CAMERA_REQUEST = 1888;
  private ImageView imageView;
  private Bitmap photo;

  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_camera);
  }

  /** Method to open camera and take photo */
  public void takePhoto(View v) {
    Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
    startActivityForResult(cameraIntent, CAMERA_REQUEST);
  }

  /** Method called after taking photo and coming back to current Activity */
  protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == CAMERA_REQUEST) {
      photo = (Bitmap) data.getExtras().get("data");
      Intent intent = new Intent(this, NewActivity.class);
      intent.putExtra("BitmapImage", photo);
      startActivity(intent);
    }
  }
}

In the second activity (call it NewActivity), just put the following code in the onCreate method, after having assigned imageView to the corresponding view in the XML layout.

      Intent intent = getIntent();
      Bitmap bitmap = (Bitmap) intent.getParcelableExtra("BitmapImage");
      imageView.setImageBitmap(photo);