android - sharing image inside imageview that gets changed with viewpager

Question

I have a screen where images are swiped left and right using imageview and viewpager. It picks up images that are specified in the code (drawables in the project). I was wondering what would be the best way for the user to shars the images.

Would it be better to have a button that saves each image to card and shares it, or have a button that screenshots whatever is on the screen and shares it? I tried searching but found that the screenshot thing only works on rooted phones (which wouldn't work for my app) but those threads were from 2 years ago, so maybe things have changed RE: screenshotting programataically?

I'm not looking for code snippets, just want to know what the best strategy for this would be, without changing too much how my images are viewed.

Answer 1

According to the documentation , you want to look at creating a share intent as follows:

Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
shareIntent.putExtra(Intent.EXTRA_STREAM, uriToImage);
shareIntent.setType("image/jpeg");
startActivity(Intent.createChooser(shareIntent, getResources().getText(R.string.send_to)));

You can then add an easy share action to your action bar which is what the user expects when browsing shareable images.

Create a menu resource:

<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
        android:id="@+id/menu_item_share"
        android:showAsAction="ifRoom"
        android:title="Share"
        android:actionProviderClass=
            "android.widget.ShareActionProvider" />
...
</menu>

Then inflate it in your onCreate and assign it some functionality using the Intent you created earlier:

private ShareActionProvider mShareActionProvider;
...

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate menu resource file.
getMenuInflater().inflate(R.menu.share_menu, menu);

// Locate MenuItem with ShareActionProvider
MenuItem item = menu.findItem(R.id.menu_item_share);

// Fetch and store ShareActionProvider
mShareActionProvider = (ShareActionProvider) item.getActionProvider();

// Return true to display menu
    return true;
}

// Call to update the share intent
private void setShareIntent(Intent shareIntent) {
if (mShareActionProvider != null) {
    mShareActionProvider.setShareIntent(shareIntent);
    }
}

I would steer away from screenshotting the image and creating a copy of data you already have available.