Android : Layout So The Title Bar Always At The Top

I have a possible simple layout questions. My activity content view contains a title bar, a webview and a status bar. I put these three views into a linearlayout and each has height as WRAP_CONTENT.

The problem is, when first displays, webview doesn't take much space because the page is not loaded. The status bar is showed right under title bar. When the page is loaded, webview expands over the screen size and the status bar is not shown even when scroll down to the button. (I tried to set webView's height to FILL_PARENT, but status bar is not shown)

What is the correct way I can layout this so the title bar always at the top, the status bar always at the bottom and webview always take the remaining middle space and have scroll bar when contents takes larger space?