誰かが以下の問題の解決策を教えてもらえますか？フラグメントを使用して複数のチャットウィンドウを開きたい簡単なチャットアプリケーションを作成しました。私はこれを実行しましたが、問題は、チャットフラグメントを分離できず、すべてが互いにオーバーラップすることです。最小化ボタンと最大化ボタンでこれらのフラグメントを分離できるように、解決策を提案してください。私はアドロイド開発に不慣れなので、コードスニペットを提供すると役に立ちます。
ありがとう＆ragards、AnandJagtap。
タブリスナーを使用し、チャット履歴を静的変数に保存しました。
/// <summary>
/// Listener that handles the selection of a tab in the user interface
/// </summary>
/// <typeparam name="T"></typeparam>
public class TabListener<T> : Java.Lang.Object, ActionBar.ITabListener
where T : Fragment
{
private T _fragment;
/// <summary>
/// Initializes a new instance of the tab listener
/// </summary>
/// <param name="fragment"></param>
public TabListener(T fragment)
{
_fragment = fragment;
}
/// <summary>
/// Handles the reselection of the tab
/// </summary>
/// <param name="tab"></param>
/// <param name="ft"></param>
public void OnTabReselected(ActionBar.Tab tab, FragmentTransaction ft)
{
}
/// <summary>
/// Adds the fragment when the tab was selected
/// </summary>
/// <param name="tab"></param>
/// <param name="ft"></param>
public void OnTabSelected(ActionBar.Tab tab, FragmentTransaction ft)
{
Fragment fragment = null;
if (tab.Text == "Users")
{
fragment = Global.UserFragment;
}
else
{
fragment = Global.ChatWindows.FirstOrDefault(chat => chat.User.Name == tab.Text);
tab.SetIcon(Resource.Drawable.message);
}
Global.CurrentFragment = fragment;
FragmentManager fm = Global.QActivity.FragmentManager;
fm.BeginTransaction().Add(Resource.Id.Frame_container, fragment, tab.Text).Commit();
}
/// <summary>
/// Removes the fragment when the tab was deselected
/// </summary>
/// <param name="tab"></param>
/// <param name="ft"></param>
public void OnTabUnselected(ActionBar.Tab tab, FragmentTransaction ft)
{
Fragment fragment = null;
if (tab.Text == "Users")
{
fragment = Global.UserFragment;
}
else
{
fragment = Global.ChatWindows.FirstOrDefault(chat => chat.User.Name == tab.Text);
tab.SetIcon(Resource.Drawable.QChatOffline);
}
FragmentManager fm = Global.QActivity.FragmentManager;
fm.BeginTransaction().Remove(fragment).Commit();
}
}
private void StartChat（string userName、bool selectedFromList）{try {User user = GetUserByName（userName）; ChatFragment chatFragment = Global.ChatWindows.Find（chatWindow => chatWindow.User.Name == user.Name）; var ft = this.activity.FragmentManager.BeginTransaction（）; if（chatFragment == null）{chatFragment = new ChatFragment（）; chatFragment.User=ユーザー; chatFragment.CurrentUser = Global.Host.Username;
var chatTab = this.activity.ActionBar.NewTab();
chatFragment.TabListener = new TabListener<ChatFragment>(chatFragment);
chatTab.SetTabListener(chatFragment.TabListener);
chatTab.SetIcon(Resource.Drawable.message);
chatTab.SetText(userName);
// Add the new tab to the action bar
this.activity.ActionBar.AddTab(chatTab);
ft.Add(Resource.Id.Frame_container, chatFragment, user.Name);
Global.ChatWindows.Add(chatFragment);
this.activity.ActionBar.SelectTab(chatTab);
Global.CurrentFragment = chatFragment;
ft.Commit();
}
else
{
int index = Global.ChatWindows.FindIndex(chat => chat.User.Name == chatFragment.User.Name);
ActionBar.Tab tab = this.activity.ActionBar.GetTabAt(index + 1);
tab.SetIcon(Resource.Drawable.message);
if (selectedFromList)
{
ft.Remove(chatFragment);
ft.Commit();
Global.CurrentFragment = chatFragment;
try
{
var fragmentTransaction = this.activity.FragmentManager.BeginTransaction();
this.activity.ActionBar.SelectTab(tab);
fragmentTransaction.Commit();
}
catch (Exception ex)
{
}
}
else
{
ft.Remove(chatFragment);
ft.Add(Resource.Id.Frame_container, chatFragment, user.Name);
ft.Commit();
}
}
chatFragment.ChatHistory.Add(new ChatHistory()
{
FirstPartColor = Android.Graphics.Color.Red,
FirstPartMessage = DateTime.Now.ToString("HH:mm:ss"),
SecondPartMessage = String.Format(" {0} is {1}.", user.Name, m_chatWindowManager.GetStatusText(user.Status).Replace("%@RN@%", "\r\n" + "\r\n")),
SecondPartColor = Android.Graphics.Color.Red
});
Global.ChatStarted = true;
}
catch (Exception exception)
{
((QChatActivity)this.activity).ShowMessage("Failed StartChat(string userName) for user " + userName + " Exception : " + exception.Message + exception.StackTrace);
}
}