How to pass images between Activities?

Question

I have a list (Recyclerview) with two texts and two images in each item. In onClick I can pass the texts but not the images. I’ve tried many ways and the closest thing I’ve come is this::

Passing by...

@Override
public void onItemClick(View view, int position) {

    TextView txt = (TextView) view.findViewById(R.id.nome_cientifico);  
    String str = txt.getText().toString();

    TextView txt1 = (TextView) view.findViewById(R.id.nome_comum);  
    String str1 = txt1.getText().toString();

    Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.slide1);
    ByteArrayOutputStream stream = new ByteArrayOutputStream();
    bmp.compress(Bitmap.CompressFormat.JPEG, 100, stream);
    byte[] jovens = stream.toByteArray();

    Bitmap bmp1 = BitmapFactory.decodeResource(getResources(), R.drawable.slide3);
    ByteArrayOutputStream stream1 = new ByteArrayOutputStream();
    bmp1.compress(Bitmap.CompressFormat.JPEG, 100, stream1);
    byte[] adultas = stream1.toByteArray();

    Intent intent=new Intent(getActivity(), Detalhes.class);

    intent.putExtra("CIENTIFICO", str);

    intent.putExtra("COMUM", str1);

    intent.putExtra("IMAGEMJ", jovens);

    intent.putExtra("IMAGEMA", adultas);

    startActivity(intent);

}

Receiving....

Intent intent = getActivity().getIntent();
Bundle extras = getActivity().getIntent().getExtras();
View rootView = inflater.inflate(R.layout.fragment_detalhes, container, false);

if (intent != null && intent.hasExtra("CIENTIFICO")) {

    mMato = intent.getStringExtra("CIENTIFICO");
    ((TextView) rootView.findViewById(R.id.textView1)).setText(mMato);

    mMato1 = intent.getStringExtra("COMUM");
    ((TextView) rootView.findViewById(R.id.textView2)).setText(mMato1);

    byte[] byteArray = extras.getByteArray("IMAGEMJ");
    Bitmap bmp = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length);
    ImageView image = (ImageView) rootView.findViewById(R.id.imageView1);
    image.setImageBitmap(bmp);

    byte[] byteArray1 = extras.getByteArray("IMAGEMA");
    Bitmap bmp1 = BitmapFactory.decodeByteArray(byteArray1, 0, byteArray1.length);
    ImageView image1 = (ImageView) rootView.findViewById(R.id.imageView2);
    image1.setImageBitmap(bmp1);
}

My problem is with the image R.drawable.slide1 and R.drawable.slide3 Passing so they stay fixed for each clicked item and do not pass the images referring to the item.

Answer 1

What you have to do is pass the Bitmap who is in the Imageview of list item.
The same way you do for Textview get the reference to the Imageview:

ImgeView slide1 = (ImageView) view.findViewById(R.id.slide1);//Altere para o R.id correcto

Get the Bitmap of Imageview as follows:

Bitmap jovens =((BitmapDrawable)slide1.getDrawable()).getBitmap();

The class Bitmap implements the interface Parcelable their objects can be passed in a Bundle:

intent.putExtra("IMAGEMJ", jovens);

To receive do:

Bitmap jovem = (Bitmap) intent.getParcelableExtra("IMAGEMJ");
ImageView image = (ImageView) rootView.findViewById(R.id.imageView1);
image.setImageBitmap(jovem);

Answer 2

If you know which image is associated with the item you click on then you can do so:

Passing by...

Intent intent=new Intent(getActivity(), Detalhes.class);
int imageId = R.drawable.slide1; // Aqui tens de mudar dinamicamente (de acordo com o item que clicas) para a imagem que pretendes passar para os detalhes
intent.putExtra("IMAGEMJ", imageId );

startActivity(intent);

Receiving....

int imageId= extras.getInt("IMAGEMJ");
Bitmap bmp = BitmapFactory.decodeResource(getResources(), imageId);
ImageView image = (ImageView) rootView.findViewById(R.id.imageView1);
image.setImageBitmap(bmp);