private void SetMaterialHeight()
{
//get the MaterialViewPagerAnimator attached to this activity
//to retrieve the declared header height
//and set it as current view height (+10dp margin)
MaterialViewPagerAnimator animator = MaterialViewPagerHelper.GetAnimator(Context);
if (animator != null)
{
ViewGroup.LayoutParams param = LayoutParameters;
param.Height = (int)Math.Round(Utils.DpToPx(animator.GetHeaderHeight() + 10, Context));
LayoutParameters = param;
}
}
/**
* Have to be called from WebView.WebViewClient.onPageFinished
* ex : mWebView.setWebViewClient(new WebViewClient() { onPageFinished(WebView view, String url) { [HERE] }});
* Inject a header to a webview : add a margin-top="**dpx"
* Had to have a transparent background with a placeholder on top
* So inject js for placeholder and setLayerType(WebView.LAYER_TYPE_SOFTWARE, null); for transparency
* TODO : inject JavaScript for Pre-Lolipop with loadUrl("js:...")
*
* @param webView
* @param withAnimation if true, disapear with a fadein
*/
public static void InjectHeader(WebView webView, bool withAnimation)
{
if (webView != null)
{
MaterialViewPagerAnimator animator = GetAnimator(webView.Context);
if (animator != null)
{
WebSettings webSettings = webView.Settings;
#pragma warning disable 618
webSettings.SetRenderPriority(WebSettings.RenderPriority.High);
#pragma warning restore 618
webSettings.CacheMode = CacheModes.NoCache;
webSettings.JavaScriptEnabled = true;
webSettings.DomStorageEnabled = true;
if (Build.VERSION.SdkInt >= BuildVersionCodes.Honeycomb)
{
//transparent background
webView.SetLayerType(LayerType.Software, null);
}
{ //inject margin top
int marginTop = animator.GetHeaderHeight() + 10;
string js = string.Format("document.body.style.marginTop= \"{0}px\"", marginTop);
WebViewLoadJs(webView, js);
}
{
string js = "document.body.style.backround-color= white";
WebViewLoadJs(webView, js);
}
if (withAnimation)
{
webView.PostDelayed(() => {
webView.Visibility = ViewStates.Visible;
ObjectAnimator.OfFloat(webView, "alpha", 0, 1).Start();
}, 400);
}
}
}
}