public void OnGlobalLayout()
{
// the wrapper must have 1 or 2 children, any more or less
// is an error
if (ChildCount == 0 || ChildCount > 2) {
throw new ArgumentOutOfRangeException(String.Format("Wrapper must have 1 or 2 children, found {0}",
ChildCount));
}
if (ChildCount == 1) {
// inject our header
var header = LayoutInflater.FromContext(Context)
.Inflate(Resource.Layout.ptrsharp_header, this, false);
// set any custom icon drawable here so the next layout pass
// will have already accounted for it's dimensions
if (pulldown_icon_drawable_res_id > 0) {
var icon = header.FindViewById<ImageView>(Resource.Id.icon);
icon.SetImageResource(pulldown_icon_drawable_res_id);
}
// set the header height to be as tall as the display
var lp = new ViewGroup.LayoutParams(header.LayoutParameters);
lp.Height = Context.Resources.DisplayMetrics.HeightPixels;
header.LayoutParameters = lp;
AddView(header, 0);
// return now and this will get called again and we can
// proceed as usual
return;
}
// find our children and glean the measured size of the header
if (header_measured_height == 0) {
if (header_res_id > 0) {
Header = FindViewById<ViewGroup>(header_res_id);
} else {
Header = (ViewGroup)GetChildAt(0);
}
if (header_background_res_id > 0) {
Header.SetBackgroundResource(header_background_res_id);
}
if (header_text_color != null) {
var text_view = Header.FindViewById<TextView>(Resource.Id.text);
if (text_view != null) {
text_view.SetTextColor(header_text_color);
}
}
// Header should not be null at this point, if it is something is totally wrong
// so I'm not checking for null.
// TODO: Possibly add an attribute to define the id of the inner header
inner_header = (ViewGroup)Header.GetChildAt(0);
if (content_view_res_id > 0) {
ContentView = (IPullToRefresharpWrappedView)FindViewById<View>(content_view_res_id);
} else {
ContentView = (IPullToRefresharpWrappedView)GetChildAt(1);
}
if (pulldown_progress_indicator_res_id > 0) {
pulldown_progress_indicator = FindPullDownProgressIndicator(pulldown_progress_indicator_res_id);
} else {
pulldown_progress_indicator = FindPullDownProgressIndicator(Resource.Id.pullDownProgressIndicator);
}
ContentView.RefreshCompleted += ptrView_RefreshCompleted;
header_measured_height = inner_header.Height;
UpdateHeaderTopMargin(-Header.Height);
// set initial text
refresh_text = FindViewById<TextView>(Resource.Id.text);
refresh_text.Text = Resources.GetString(pull_to_refresh_string_id);
}
if (header_measured_height > 0) {
Header.ViewTreeObserver.RemoveGlobalOnLayoutListener(this);
}
}
public void OnGlobalLayout()
{
// the wrapper must have 1 or 2 children, any more or less
// is an error
if (ChildCount == 0 || ChildCount > 2)
{
throw new ArgumentOutOfRangeException(String.Format("Wrapper must have 1 or 2 children, found {0}",
ChildCount));
}
if (ChildCount == 1)
{
// inject our header
var header = LayoutInflater.FromContext(Context)
.Inflate(Resource.Layout.ptrsharp_header, this, false);
// set any custom icon drawable here so the next layout pass
// will have already accounted for it's dimensions
if (pulldown_icon_drawable_res_id > 0)
{
var icon = header.FindViewById <ImageView>(Resource.Id.icon);
icon.SetImageResource(pulldown_icon_drawable_res_id);
}
// set the header height to be as tall as the display
var lp = new ViewGroup.LayoutParams(header.LayoutParameters);
lp.Height = Context.Resources.DisplayMetrics.HeightPixels;
header.LayoutParameters = lp;
AddView(header, 0);
// return now and this will get called again and we can
// proceed as usual
return;
}
// find our children and glean the measured size of the header
if (header_measured_height == 0)
{
if (header_res_id > 0)
{
Header = FindViewById <ViewGroup>(header_res_id);
}
else
{
Header = (ViewGroup)GetChildAt(0);
}
if (header_background_res_id > 0)
{
Header.SetBackgroundResource(header_background_res_id);
}
if (header_text_color != null)
{
var text_view = Header.FindViewById <TextView>(Resource.Id.text);
if (text_view != null)
{
text_view.SetTextColor(header_text_color);
}
}
// Header should not be null at this point, if it is something is totally wrong
// so I'm not checking for null.
// TODO: Possibly add an attribute to define the id of the inner header
inner_header = (ViewGroup)Header.GetChildAt(0);
if (content_view_res_id > 0)
{
ContentView = (IPullToRefresharpWrappedView)FindViewById <View>(content_view_res_id);
}
else
{
ContentView = (IPullToRefresharpWrappedView)GetChildAt(1);
}
if (pulldown_progress_indicator_res_id > 0)
{
pulldown_progress_indicator = FindPullDownProgressIndicator(pulldown_progress_indicator_res_id);
}
else
{
pulldown_progress_indicator = FindPullDownProgressIndicator(Resource.Id.pullDownProgressIndicator);
}
ContentView.RefreshCompleted += ptrView_RefreshCompleted;
header_measured_height = inner_header.Height;
UpdateHeaderTopMargin(-Header.Height);
// set initial text
refresh_text = FindViewById <TextView>(Resource.Id.text);
refresh_text.Text = Resources.GetString(pull_to_refresh_string_id);
}
if (header_measured_height > 0)
{
Header.ViewTreeObserver.RemoveGlobalOnLayoutListener(this);
}
}
