C# 带有webview savedInstanceState的Android片段选项卡在方向更改时始终为空
经过许多天的搜索和尝试,我仍然没有找到答案 使用ActionBarSherlock,我有一个基本的SherlockFragmentActivity实现ActionBar.ITabListener 这些片段包含一个简单的webview。在配置更改(屏幕方向更改)期间,savedInstanceState的onCreateView参数始终为空,因此我无法恢复状态 我已经尽可能地简化了,希望能得到更多的帮助。所以名字很傻 TabFragWebActivityC# 带有webview savedInstanceState的Android片段选项卡在方向更改时始终为空,c#,android-fragments,xamarin.android,actionbarsherlock,C#,Android Fragments,Xamarin.android,Actionbarsherlock,经过许多天的搜索和尝试,我仍然没有找到答案 使用ActionBarSherlock,我有一个基本的SherlockFragmentActivity实现ActionBar.ITabListener 这些片段包含一个简单的webview。在配置更改(屏幕方向更改)期间,savedInstanceState的onCreateView参数始终为空,因此我无法恢复状态 我已经尽可能地简化了,希望能得到更多的帮助。所以名字很傻 TabFragWebActivity public class TabFragW
public class TabFragWebActivity : SherlockFragmentActivity, Com.Actionbarsherlock.App.ActionBar.ITabListener
{
protected override void OnCreate (Bundle savedInstanceState)
{
base.OnCreate (savedInstanceState);
SetContentView (Resource.Layout.fragment_tabs);
LoadTabs();
}
public void LoadTabs ()
{
this.RunOnUiThread (() => {
SupportActionBar.NavigationMode = Com.Actionbarsherlock.App.ActionBar.NavigationModeTabs;
var tab = SupportActionBar.NewTab ();
tab.SetContentDescription ("desc 1");
tab.SetText ("tab 1");
tab.SetTag ("tab1id");
tab.SetTabListener (this);
SupportActionBar.AddTab (tab);
tab = SupportActionBar.NewTab ();
tab.SetContentDescription ("desc 2");
tab.SetText ("tab 2");
tab.SetTag ("tab2id");
tab.SetTabListener (this);
SupportActionBar.AddTab (tab);
});
}
#region ITabListener implementation
public void OnTabReselected (Com.Actionbarsherlock.App.ActionBar.Tab tab, Android.Support.V4.App.FragmentTransaction transAction)
{
//throw new NotImplementedException ();
}
public void OnTabSelected (Com.Actionbarsherlock.App.ActionBar.Tab tab, Android.Support.V4.App.FragmentTransaction transAction)
{
string tag = tab.Tag.ToString();
var fragment = SupportFragmentManager.FindFragmentByTag (tag);
if (fragment != null) {
transAction.Show(fragment);
return;
}
fragment = new WebFragment("http://www.google.com");
transAction.Add(Resource.Id.realtabcontent, fragment, tag);
}
public void OnTabUnselected (Com.Actionbarsherlock.App.ActionBar.Tab tab, Android.Support.V4.App.FragmentTransaction transAction)
{
string tag = tab.Tag.ToString();
HideFragment(transAction, tag);
}
public void HideFragment (Android.Support.V4.App.FragmentTransaction transAction, string tag)
{
Android.Support.V4.App.Fragment fragment;
fragment = SupportFragmentManager.FindFragmentByTag (tag);
if (fragment != null) {
transAction.Hide (fragment);
}
}
#endregion
}
网络碎片
public class WebFragment : SherlockFragment
{
string _webURL;
WebView _webview;
Activity _activity;
public WebFragment (string webURL)
{
_webURL = webURL;
}
public override void OnAttach (Android.App.Activity activity)
{
_activity = activity;
base.OnAttach (activity);
}
public override void OnActivityCreated (Bundle savedInstanceState)
{
base.OnActivityCreated (savedInstanceState);
RetainInstance = true;
if (_webview == null)
initUI();
}
public void initUI ()
{
_webview = (WebView)_activity.FindViewById (Resource.Id.webView);
if (_webview != null) {
_webview.SetWebChromeClient (new ROSWebChromeClient ());
_webview.SetWebViewClient (new ROSWebViewClient ());
_webview.Settings.JavaScriptEnabled = true;
_webview.LoadUrl (_webURL);
}
}
public override Android.Views.View OnCreateView (LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
var mainView = (View)inflater.Inflate (Resource.Layout.fragment_web, container, false);
//the savedInstanceState is always null
if (_webview != null) {
_webview.RestoreState (savedInstanceState);
}
return mainView;
}
}
我希望我做了一些简单的错误。但我不知道这是什么。我已经应用了Jake上面概述的更改,并编译了一个新的支持库,直到Google发布他的修复程序
从您的项目以及操作栏sherlock library项目中替换此jar我在OnActivityCreated事件期间设置此jar。但我也在OnAbsSelected期间将其添加到实例创建中。没有帮助,savedInstanceState仍然为空。根据您最近的更新/编辑。我真的不知道Jake是谁以及修复程序是什么Jake是一位作家,他创建了action bar sherlock library和android-support-v4.jar。我想试试你的override retainInstance,但我不确定我会为哪个类这么做,然后用它做什么?