[EXPERIMENTAL] fitting webview when the software keyboard is displayed.

[KojiNakamaru]

cf. #244

[antoniohof]

hi! I have notest that IOS does that automatically. On Android, I was using this solution and so far it is working good:

if (webView.IsKeyboardVisible) {
      keyboardVisible = true;
      using(AndroidJavaClass UnityClass = new AndroidJavaClass("com.unity3d.player.UnityPlayer"))
      {
	   AndroidJavaObject View = UnityClass.GetStatic<AndroidJavaObject>("currentActivity").Get<AndroidJavaObject>("mUnityPlayer").Call<AndroidJavaObject>("getView");

	   using(AndroidJavaObject Rct = new AndroidJavaObject("android.graphics.Rect"))
		{
			View.Call("getWindowVisibleDisplayFrame", Rct);

			keyboardHeight = Screen.height - Rct.Call<int>("height");
		}
	}
	//Debug.Log ("set keyboard visible " + keyboardHeight);
	webView.SetMargins (0, 0, 0, keyboardHeight);

}else if(keyboardVisible != webView.IsKeyboardVisible){
	webView.SetMargins (0, 0, 0, 0);
}

[KojiNakamaru]

Thanks! I'll later check whether your approach can be applied to the master branch.

[KojiNakamaru]

I've finally implemented #300 based on your code. Thanks!