Agfdhyk

On click, my app gives choice between camera and gallery and that picture is then displayed in an ImageView. I originally tried to display the full image and then tried to use the bitmap way but nothing works. I just get a blank ImageView. Please give me some guidance as to what I'm doing wrong and ask for clarifications if necessary:

Camera/gallery photo code:

Uri outputFileUri;

private void openImageIntent() {

    // Determine Uri of camera image to save.

    final File root = new File(Environment.getExternalStorageDirectory() + File.separator + "MyDir" + File.separator);

    root.mkdirs();

    final String fname = "img_" + System.currentTimeMillis() + ".jpg";

    final File sdImageMainDirectory = new File(root, fname);

    outputFileUri = Uri.fromFile(sdImageMainDirectory);

    // Camera.

    final List<Intent> cameraIntents = new ArrayList<Intent>();

    final Intent captureIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);

    final PackageManager packageManager = getPackageManager();

    final List<ResolveInfo> listCam = packageManager.queryIntentActivities(captureIntent, 0);

    for(ResolveInfo res : listCam) {

        final String packageName = res.activityInfo.packageName;

        final Intent intent = new Intent(captureIntent);

        intent.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));

        intent.setPackage(packageName);

        intent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);

        cameraIntents.add(intent);

    }

    // Filesystem.

    final Intent galleryIntent = new Intent();

    galleryIntent.setType("image/*");

    galleryIntent.setAction(Intent.ACTION_GET_CONTENT);

    // Chooser of filesystem options.

    final Intent chooserIntent = Intent.createChooser(galleryIntent, "Select Source");

    // Add the camera options.

    chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, cameraIntents.toArray(new Parcelable{}));

    startActivityForResult(chooserIntent, 0);

}





@Override

protected void onActivityResult(int requestCode, int resultCode, Intent returnIntent) {

    super.onActivityResult(resultCode, requestCode, returnIntent);

    if(requestCode == 0) {

        if(resultCode == RESULT_OK) {

            final boolean isCamera;

            if(returnIntent == null) {

                isCamera = true;

            }

            else

            {

                final String action = returnIntent.getAction();

                if(action == null) {

                    isCamera = false;

                }

                else {

                    isCamera = action.equals(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);

                }

            }

            Uri selectedImageUri;

            if(isCamera) {

                selectedImageUri = outputFileUri;

                mainImage.setImageURI(selectedImageUri); //trying full image

            }

            else {

                selectedImageUri = returnIntent == null ? null : returnIntent.getData();

                try {

                    Bitmap bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), selectedImageUri);

                    mainImage.setImageBitmap(bitmap); //trying bitmap

                } catch (IOException e) {

                    e.printStackTrace();

                }

            }

        }

    }

}

If you want to take image from camera you can go with this process:

public void fromCamera(){



    String path= Environment.getExternalStorageDirectory().getPath() + "/DCIM/Camera/";

    File file = new File(path,"IMG_"+System.currentTimeMillis()+".jpg");

    file.getParentFile().mkdirs();

    try {

        file.createNewFile();

    }catch (IOException e) {

        e.printStackTrace();

    }

    mPicCaptureUri = Uri.fromFile(file);

    Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);

    intent.putExtra(MediaStore.EXTRA_OUTPUT, mPicCaptureUri);

    startActivityForResult(intent, REQUEST_CAMERA);



}

And if you want image from gallery then :

Intent intent = new Intent(Intent.ACTION_GET_CONTENT);

    intent.setType("image/*");

    startActivityForResult(Intent.createChooser(intent, getString(R.string.select_file)), REQUEST_GALLERY);

On your onActivityResult you can get the image path of selected one and set image in image view....

@Override

public void onActivityResult(int requestCode, int resultCode, Intent data) {

    super.onActivityResult(requestCode, resultCode, data);



    if(resultCode == RESULT_OK){

        if (requestCode == REQUEST_GALLERY && data != null && data.getData() != null) {



            Uri selectedImageUri = data.getData();



            //do set your image here





        }else if(requestCode == REQUEST_CAMERA){



            if(mPicCaptureUri!=null){

                //do try to set image here

            }

        }

    }

}

don't forgrt to define mPicCaptureUri at the top as:

private Uri mPicCaptureUri = null;

You can take idea from above code ..it might help you

your code is 2000000000000000% ok i test it myself

Your problem is your ImageView can't show image because of image size. I try this code with ImageView like this

    <ImageView

    android:id="@+id/mainImage"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content"

    android:layout_alignParentTop="true"

    android:layout_centerHorizontal="true"

    android:src="@drawable/abc_ab_bottom_solid_dark_holo" />

If you use height and width with dp like this

    android:layout_width="100dp"

    android:layout_height="100dp"

You need to compress the Bitmap to show it in ImageView.
Edit your code to conversion

if(isCamera) {

                selectedImageUri = outputFileUri;

                try {

                    Bitmap bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), selectedImageUri);//You can use this bitmap if need full image to further use 

                    Bitmap bitmap2 = Bitmap.createScaledBitmap(bitmap,  600 ,600, true);//this bitmap2 you can use only for display

                    mainImage.setImageBitmap(bitmap2); //trying full image

                } catch (Exception e) {

                    // TODO Auto-generated catch block

                    e.printStackTrace();

                }



            }

            else {

                selectedImageUri = returnIntent == null ? null : returnIntent.getData();

                try {

                    Bitmap bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), selectedImageUri);

                    bitmap = Bitmap.createScaledBitmap(bitmap,  600 ,600, true);

                    mainImage.setImageBitmap(bitmap); //trying bitmap

                } catch (IOException e) {

                    e.printStackTrace();

                }

            }

Now you could use Picasso Library :D

Picasso.with(context)

    .load(item.getPhotoUri())

    .resize(512,512)

    .placeholder(R.drawable.noimage)

    .error(R.drawable.error_image)

    .into(photo);

This mostly happens due to image being too big to be rendered by bitmap within that span of nano second during runtime, so you won't see it. Use a library called Glide. It solved all my image issues in Android including performance when there are hundreds of images to be displayed in a single list or grid.