我有一個簡單的Android應用程序與選項卡設置使用Tabhost和碎片。在其中一個標籤頁上,該片段是一個列表視圖。我想要做的是,當用戶點擊列表視圖中的一個項目時,打開一個新視圖,其中包含基於點擊項目的更多特定信息,但保留它以便標籤仍然存在。Android的片段,沒有發現id內TabHost
我的方法是,當用戶在列表視圖中點擊一個項目時,創建一個新的片段,然後從擁有所有這些片段的主FragmentActivity類中處理標籤邏輯,它將分離當前顯示的片段和添加這個「新」(singleStationListItem)片段。我遇到的問題是,我無法將新片段添加到帶有R.id.realtab內容的fragmentTransaction中,因此未正確添加。我得到:
十月3日至21日:50:01.862:E/FragmentManager(1136):未發現ID 0x1010000(機器人:ATTR /主題)視圖中的片段singleStationListItem {40d090a0#2的ID = 0x1010000}
其中R.id.realtabcontent = 0x01010000;
我可以附加它沒有Id,但然後用戶無法返回(調用addtobackstash())。我已經搜索了這個錯誤,但其他解決方案不涉及到tabhost,我似乎做了什麼是必需的,比如在onCreate()中調用setContextView(...)到包含我的framelayout標籤的佈局的xml文件試圖附加我的片段。我可以將標籤片段添加到R.id.realtab內容中,而不會出現問題。有誰知道什麼可能導致我的錯誤,我怎麼能解決它?
注意:我遵循本教程以獲取我的選項卡的工作。我的代碼非常相似。 http://thepseudocoder.wordpress.com/2011/10/04/android-tabs-the-fragment-way/
我的代碼: activiy_main.xml從我的片段活動類
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/main_body"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TabHost
android:id="@android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_weight="0"
android:padding="5dp" />
<FrameLayout
android:id="@+android:id/realtabcontent" <--id that I want to set to
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1" />
<TabWidget
android:id="@android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="-4dp"
android:layout_weight="0"
android:orientation="horizontal" />
</LinearLayout>
</TabHost>
</LinearLayout>
main_activity.java //部分
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Step 1: Inflate layout
setContentView(R.layout.activity_main);
// Step 2: Setup TabHost
initialiseTabHost(savedInstanceState);
if (savedInstanceState != null) {
mTabHost.setCurrentTabByTag(savedInstanceState.getString("tab")); //set the tab as per the saved state
}
}
public void onTabChanged(String tag) { //handles tab changes
TabInfo newTab = (TabInfo) this.mapTabInfo.get(tag);
if (mLastTab != newTab) {
FragmentTransaction ft = this.getSupportFragmentManager().beginTransaction();
if (mLastTab != null) {
if (mLastTab.fragment != null) {
ft.detach(mLastTab.fragment);
}
}
if (newTab != null) {
if (newTab.fragment == null) {
newTab.fragment = Fragment.instantiate(this,
newTab.clss.getName(), newTab.args);
ft.add(R.id.realtabcontent, newTab.fragment, newTab.tag); //note it uses the R.id.realtabcontent without any issues here
} else {
ft.attach(newTab.fragment);
}
}
Log.d("fragment manager in activity: ", "" + ft.isEmpty());
mLastTab = newTab;
ft.commit();
this.getSupportFragmentManager().executePendingTransactions();
Log.d("ft ID: ", ft.toString());
}
}
//This is the callback function inside the listview fragment. I created an interface and it is overwritten in here as suggested by the Android SDK guide
public void onStationSelected(String station) {
FragmentTransaction ft = this.getSupportFragmentManager().beginTransaction();
ft.addToBackStack(null);
ft.addToBackStack(null);
//create argument for new fragment that will be created
Bundle b = new Bundle();
b.putString("station", station);
Fragment displayStationInfo = Fragment.instantiate(this, singleStationListItem.class.getName(), b);
Fragment cur = getSupportFragmentManager().findFragmentById(R.id.realtabcontent);
ft.detach(cur);
ft.add(R.id.realtabcontent, displayStationInfo); <-- this line causes the error
ft.commit();
this.getSupportFragmentManager().executePendingTransactions();
}
singleStationListItem.java在這裏
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Bundle b = this.getArguments();
getActivity().setContentView(R.layout.single_station_item_view);
TextView txtStation = (TextView) getActivity().findViewById(R.id.station_label);
String station = b.getString("station");
// displaying selected product name
Log.d(TAG, "passed in station information: " + station);
txtStation.setText(station);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = (LinearLayout)inflater.inflate(R.layout.single_station_item_view, container, false);
return v;
}
任何幫助將是gre非常感謝。