private void InitUIComponents(View rootView)
{
mListView = rootView.FindViewById(Resource.Id.list) as ListView;
TurnOffListViewDecoration(mListView);
mListView.Adapter = mAdapter;
mBtnChannel = rootView.FindViewById(Resource.Id.btn_channel) as ImageButton;
mBtnChannel.Click += (sender, e) => {
if (OnChannelListClicked != null)
{
OnChannelListClicked(this, new EventArgs());
}
};
mBtnSend = rootView.FindViewById(Resource.Id.btn_send) as Button;
mBtnUpload = rootView.FindViewById(Resource.Id.btn_upload) as ImageButton;
mProgressBtnUpload = rootView.FindViewById(Resource.Id.progress_btn_upload) as ProgressBar;
mEtxtMessage = rootView.FindViewById(Resource.Id.etxt_message) as EditText;
mEtxtMessage.KeyPress += (object sender, View.KeyEventArgs e) => {
if (e.KeyCode == Keycode.Enter)
{
if (e.Event.Action == KeyEventActions.Down)
{
Send();
e.Handled = true;
}
}
else
{
e.Handled = false;
}
};
mBtnSend.Enabled = false;
mBtnSend.Click += (object sender, EventArgs e) => {
Send();
};
mEtxtMessage.AfterTextChanged += (object sender, AfterTextChangedEventArgs e) => {
mBtnSend.Enabled = e.Editable.Length() > 0 ? true : false;
if (e.Editable.Length() > 0)
{
SendBirdSDK.TypeStart();
}
else
{
SendBirdSDK.TypeEnd();
}
};
mListView.Touch += (object sender, View.TouchEventArgs e) => {
Helper.HideKeyboard(this.Activity);
e.Handled = false;
};
mListView.ScrollStateChanged += (s, args) => {
if (args.ScrollState == ScrollState.Idle)
{
if (args.View.FirstVisiblePosition == 0 && args.View.ChildCount > 0 && args.View.GetChildAt(0).Top == 0)
{
var mMessageListQuery = SendBirdSDK.QueryMessageList(SendBirdSDK.GetChannelUrl());
mMessageListQuery.OnResult += (sender, e) => {
mSyncContext.Post(delegate {
foreach (var messageModel in e.Messages)
{
mAdapter.AddMessageModel(messageModel);
}
mAdapter.NotifyDataSetChanged();
mListView.SetSelection(e.Messages.Count);
}, null);
};
mMessageListQuery.Prev(mAdapter.GetMinMessageTimestamp(), 30); // Excute Query
}
else if (args.View.FirstVisiblePosition == args.View.ChildCount - 1 && args.View.ChildCount > 0)
{
var mMessageListQuery = SendBirdSDK.QueryMessageList(SendBirdSDK.GetChannelUrl());
mMessageListQuery.OnResult += (sender, e) => {
mSyncContext.Post(delegate {
foreach (var messageModel in e.Messages)
{
mAdapter.AddMessageModel(messageModel);
}
mAdapter.NotifyDataSetChanged();
}, null);
};
mMessageListQuery.Next(mAdapter.GetMaxMessageTimestamp(), 30); // Excute Query
}
}
};
}