Android Question WebView vs ImageView for Pitch & Zoom

[fishwolf]

I need show a big image and do pitch and zoom gesture.

i have tried to use WebView, with a bit of javascript code for set the size, and the gesture work fine.
but the time for load the image is long, and the webview show a white page.
I have tried to set a background image for loading, but is showed for a little time, also it must be load.

I have used the TouchImageView with no good result
The ImageView component don't manage the standard gesture as in native java?

 

[warwound]

You could use CSS styles to set a background color for your webpage - setting a background color won't take long (it won't take as long as setting a background image).
So that's one solution.
Another is TouchImageView which is an ImageView with pinch zoom and panning enabled.

 

[fishwolf]

change the color of background don't show to user that must wait the download image.
i will try to set a image background from the android asset, but i think that work fine only with LoadHtml metohd, not LoadUrl, right?

why TouchImageView has a not perfect gesture?
sometime the image is not controllable

 

[warwound]

change the color of background don't show to user that must wait the download image.
i will try to set a image background from the android asset, but i think that work fine only with LoadHtml metohd, not LoadUrl, right?

You can load an asset in a WebView using a synxtax like this:

<img src ="file:///android_asset/my_image.jpg" />

HTML such as this should work regardless of whether you use LoadHTML or LoadUrl.

why TouchImageView has a not perfect gesture?
sometime the image is not controllable

I wrote TouchImageView as an exercise in learning java.
It's far from perfect but most people find it useable.

 

[Erel]

Relevant link: Images loaded in webviews are not displayed in mode “debug (rapid)”