Android programming to achieve picture zoom in and out function zoomcontrols control usage example

This article describes the example of Android programming to realize the function of picture zooming in and out, and the usage of zoomcontrols control. Share with you for your reference, as follows:

Mainactivity Code:

activity_ Mainlayout file code:

Description of common methods:

Hasfocus(): judge focus hide(): hide ontouchevent (motionevent): use this method to handle the touch screen mobile event setiszoomminenabled (Boolean isenabled): whether to allow zooming in setiszoomoutenabled (Boolean isenabled): whether to allow zooming out setonzoominclicklistener (view. Onclicklistener listener): register the zoom in listener setonzoomoutclicklistener (view. Onclicklistener listener): register the zoom out listener setzoomspeed (long speed): set the zoom speed show(): display

More readers interested in Android related content can view the special topics of this site: summary of Android graphics and image processing skills, introduction and advanced tutorial of Android development, summary of Android debugging skills and common problem solving methods, summary of Android basic component usage, summary of Android view skills, summary of Android layout skills, and Android control usage summary

I hope this article will help you in Android programming.