Can I apply zoom control in imageview
ImageView does not have a built-in zoom control. Please use the search option before asking question, you would have found your answer : How to make my ImageView zoomable? which mentions that there seems to be a way although there is no built in. Please correct your title to make it easier to find with a search, for instance : is there a way to zoom on an ImageView in Android
I'd advice you to use a WebView
String page = "<html><body><center><img src=\""+path to your image+"\"/></center></body></html>";
webView.loadDataWithBaseURL("fake",page, "text/html", "UTF-8","");
So you're creating a simple HTML page with your picture and then display it in the webView.
You can enable built-in zoom with zoomControl ( and maybe in the same time Multi-touch Zoom gesture for MultiTouch devices ?). You've also 2-dimension drag ( Vertical + Horizontal Scroll at the same time).
That's why it's really faster to use a WebView !
来源：https://stackoverflow.com/questions/3405468/android-can-i-use-a-zoom-control-in-an-imageview