How to select multiple device images and upload them?

Question

How to pick multiple images from what user select and send to mysql database by php?

The most that got was a single image, but the user can select several on android and wanted to send to online repository and save their directories at the same time, is possible?

Answer 1

To select multiple images use:

Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
startActivityForResult(Intent.createChooser(intent, "Selecione suas fotos"), SELECT_PICTURES);

As described in the documentation:

• https://developer.android.com/reference/android/content/Intent#EXTRA_ALLOW_MULTIPLE

And to get the photos you must use the https://developer.android.com/reference/android/content/Intent#getClipData()

And to get the selected photos use:

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

    if(requestCode == SELECT_PICTURES && resultCode == Activity.RESULT_OK && data.getClipData() != null) {
        int j = data.getClipData().getItemCount();

        for (int i = 0; i < j; i++)  
            Uri imageUri = data.getClipData().getItemAt(i).getUri();

            //Faça o upload aqui
        }
    }
}

This will upload one by one. of course the HTTP and your server part is up to you, because it depends on what you did.

Vale remembers that there is the https://square.github.io/retrofit/ that can help you work with sending, if you have little experience with HTTP (most people spend years and don’t really master this, because it’s more complex than the word goes around)

So if you were to use Retrofit, you could get the images like this:

List<MultipartBody.Part> uploads = new ArrayList<>();

int j = data.getClipData().getItemCount();

for (int i = 0; i < j; i++)  
    File file = new File(data.getClipData().getItemAt(i).getUri());

    RequestBody requestFile = RequestBody.create(MEDIA_TYPE_IMG, file);

    uploads.add(MultipartBody.Part.createFormData("foto[]", file.getName(), requestFile));
}

Note that I applied foto[], but I didn’t really test the "Retrofit 2", if there is something wrong let me know.