How do I display a large png file and scroll around it?

Question

I have a large Png image file that I would like to display and scroll around it as I can do in a WebView. When I load my activity with the image file into an ImageView the image is displayed in the screen but is too small to read. I guess the Zoom controls will help once the image it is at it's normal size. I have tried using the image in a WebView but I don't want the Url displayed.

score 5 · Accepted Answer · answered Feb 17 '11 at 16:02

I've done something similar with a TableLayout. I wrapped it in a ScrollView nested in a HorizontalScrollView and the user is able to scroll around in all directions when my TableLayout takes up more space than what will fit on the screen. I imagine this would work with an ImageView as well. Something like this:

    <HorizontalScrollView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">
        <ScrollView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content">
            <ImageView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />
        </ScrollView>
    </HorizontalScrollView>

I've tried this but you can only scroll in one direction at once, because two scroll views don't work as one. — Lumis, Feb 17 '11 at 16:08
@Lumis What if you extended the HorizontalScrollView, and for each touch event you would return false, in order to send it to the scrollView too ? — android developer, Apr 20 '13 at 10:52

score 1 · Answer 2 · answered Feb 17 '11 at 22:48

1

Create your own Custom Scrollable Image View. I have used this in a game, it works, and you can scroll in x, y directions.

answered Feb 17 '11 at 22:48

f20k

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I like the look of this! how do i link this to my image? i have made the class and added this code but would i have to make a new activity with the image to use this! i am still getting to grips/learning with android – David Marsh Feb 28 '17 at 16:46

score 0 · Answer 3 · edited May 23 '17 at 11:46

0

I posted one solution for the same question here: Images in ScrollView in android

edited May 23 '17 at 11:46

Community

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answered Feb 17 '11 at 16:06

Lumis

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score 0 · Answer 4 · edited May 23 '17 at 12:09

0

You said you tried a WebView but you don't want the URL displayed? Do you mean that you see an address bar at the top? If so, please see the answer to this question.

edited May 23 '17 at 12:09

Community

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answered Feb 17 '11 at 16:20

dave.c

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How do I display a large png file and scroll around it?

4 Answers4

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