WebView with ZoomControls in Android

Here is an article on how to use WebView with ZoomControls enabled. First of all add an Internet permission to your manifest file.

<uses-permission android:name="android.permission.INTERNET">
</uses-permission>

Layout (webview.xml)

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent" 
>
  <WebView
    android:id="@+id/webView"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
  />
</LinearLayout>

public class Main extends Activity {
  private WebView myWebView;
  private static final FrameLayout.LayoutParams ZOOM_PARAMS =
new FrameLayout.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT,
Gravity.BOTTOM);

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    this.setContentView(R.layout.webview);
    this.myWebView = (WebView) this.findViewById(R.id.webView);

    FrameLayout mContentView = (FrameLayout) getWindow().
    getDecorView().findViewById(android.R.id.content);
    final View zoom = this.myWebView.getZoomControls();
    mContentView.addView(zoom, ZOOM_PARAMS);
    zoom.setVisibility(View.GONE);

    this.myWebView.loadUrl("http://www.almondmendoza.com");
  }
}

Quick Explanation:
The stuff here were extracted from BrowserActivity, so if there is an error on my explanation, i apologize in advance.

FrameLayout mContentView = (FrameLayout) getWindow().getDecorView().findViewById(android.R.id.content);
-- According to Windows Decoration, this would retrieve the top-level window decor view.

final View zoom = this.myWebView.getZoomControls();
-- this would get the zoom controls of the webview object

mContentView.addView(zoom, ZOOM_PARAMS);
-- this would add the zoom controls to our our top-level window, the ZOOM_PARAMS was just copied from BrowserActivity, so i dont actually know what it means :)

zoom.setVisibility(View.GONE);
-- This would hide the zoom at the start, we do this because we want to show the zoom controls only when the user's scroll the browser.

this.myWebView.loadUrl("http://www.almondmendoza.com");
-- This would load the url to our webview.


Source:
The codes above are all the sources, you just have to import the right classes. In eclipse just highlight the errors and right click then Quick Fix.

Reference:
BrowserActivity