android - WebView with an image doesnt stay in center after zoom(double tap) -


i have been trying show image in webview. image large , of dimensions bigger device. chose use webview capable of showing large images.

however, difficult show webview image inside layout , keep around center. following code image shows fine in center in beginning start double tapping zooms in , zooms out , moves on screen. settles aligned top of device scree , wont wont move there.

i missing here. there specific ways achieve center aligned image in webview?

what looking is:

  • webview should expand , collapse double tap toggles
  • image should zoom in , zoom out zoom should respect image position in center. should come in original position when zoomed out.

any appreciated thanks

here layout xml:

<framelayout       xmlns:android="http://schemas.android.com/apk/res/android"         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:layout_gravity="center"         android:scaletype="centerinside"         android:background="@android:color/holo_green_dark">      <webview             android:id="@+id/test"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:adjustviewbounds="true"             android:layout_marginleft = "10dp"             android:layout_marginright = "10dp"             android:layout_gravity="center"             android:scaletype="centerinside"              />  </framelayout>

here activity source code:

public class testactivity7 extends activity {      string largeurl = "http://test.png";     webview webview;      public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.test);         webview = (webview) findviewbyid(r.id.test);         websettings websettings = webview.getsettings();         websettings.setdisplayzoomcontrols(false);          websettings.setdisplayzoomcontrols(false);         websettings.setsupportzoom(false);         websettings.setjavascriptenabled(true);         websettings.setusewideviewport(true);         websettings.setloadwithoverviewmode(true);          websettings.setdefaulttextencodingname("utf-8");         //   websettings.setusewideviewport(true);         webview.setinitialscale(25);         webview.setbackgroundcolor(color.transparent);         webview.loadurl(largeurl);        } }


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