Android 在 Fragment 中添加 Tab

Question

我正在尝试在 fragment 中添加一个 TabHost ...下面给出了代码。在 fragment 中我正在尝试添加 TabHost 以显示两个选项卡

public class TablesFragment extends Fragment {

TabHost tabHost;
TabHost.TabSpec spec;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {

    View rootView = inflater.inflate(R.layout.tables_fragment, container,
            false);
    tabHost = (TabHost) rootView.findViewById(android.R.id.tabhost);
    tabHost.setup();

    Intent intentAndroid = new Intent().setClass(getActivity(),
            NewsFragment.class);
    spec = tabHost.newTabSpec("Android").setContent(intentAndroid)
            .setIndicator("Android");
    tabHost.addTab(spec);

    Intent intentBus = new Intent().setClass(getActivity(), NewsFragment.class);
    spec = tabHost.newTabSpec("Welcome").setIndicator("Welcome")
            .setContent(intentBus).setIndicator("Welcome");
    tabHost.addTab(spec);
    return rootView;
}

这给我错误...需要此代码的助手...

日志:

01-26 16:21:27.092: E/AndroidRuntime(5597): FATAL EXCEPTION: main
01-26 16:21:27.092: E/AndroidRuntime(5597): java.lang.IllegalStateException: Did you    forget to call 'public void setup(LocalActivityManager activityGroup)'?
01-26 16:21:27.092: E/AndroidRuntime(5597):     at android.widget.TabHost$IntentContentStrategy.getContentView(TabHost.java:692)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at android.widget.TabHost.setCurrentTab(TabHost.java:358)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at android.widget.TabHost.addTab(TabHost.java:236)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at com.fifaworldcup2014.TablesFragment.onCreateView(TablesFragment.java:31)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at android.support.v4.app.Fragment.performCreateView(Fragment.java:1500)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:927)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1467)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:472)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at com.fifaworldcup2014.MainActivity.onTabChanged(MainActivity.java:164)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at android.widget.TabHost.invokeOnTabChangeListener(TabHost.java:391)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at android.widget.TabHost.setCurrentTab(TabHost.java:376)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at android.widget.TabHost$2.onTabSelectionChanged(TabHost.java:150)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at android.widget.TabWidget$TabClickListener.onClick(TabWidget.java:546)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at android.view.View.performClick(View.java:4084)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at android.view.View$PerformClick.run(View.java:16966)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at android.os.Handler.handleCallback(Handler.java:615)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at android.os.Handler.dispatchMessage(Handler.java:92)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at android.os.Looper.loop(Looper.java:137)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at android.app.ActivityThread.main(ActivityThread.java:4745)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at java.lang.reflect.Method.invokeNative(Native Method)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at java.lang.reflect.Method.invoke(Method.java:511)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
01-26 16:21:27.092: E/AndroidRuntime(5597):     at dalvik.system.NativeStart.main(Native Method)

Answer 1

如果您的目标是 API17 +，我相信这对您有用。如果不是，你应该看看 ViewContainers, and swipeable views .

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTabHost;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class TabHostParentFragment extends Fragment {

private FragmentTabHost tabHost;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
tabHost = new FragmentTabHost(getActivity());
tabHost.setup(getActivity(), getChildFragmentManager(), R.layout.my_parent_fragment);

Bundle arg1 = new Bundle();
arg1.putInt("Arg for Frag1", 1);
tabHost.addTab(tabHost.newTabSpec("Tab1").setIndicator("Frag Tab1"),
    NewsFragment.class, arg1);

Bundle arg2 = new Bundle();
arg2.putInt("Arg for Frag2", 2);
tabHost.addTab(tabHost.newTabSpec("Tab2").setIndicator("Frag Tab2"),
    MyNestedFragment2.class, arg2);

return tabHost;
}