ios7 issues with webview focus when using keyboard html

I found the solution for iOS 7. Use the following meta tag in your HTML pages:

<meta name="viewport" content="width=device-width, height=device-height, initial-scale=1.0, maximum-scale=1.0, target-densityDpi=device-dpi" />

I faced the same issue. In my case i am using jquery mobile and to solve this issue i added the attribute "autofocus" to the input field.
This seems to simulate a first tap on the field whereas the tap by the user opens the keyboard and he will be able to write to the field.
Hope this helps.