安卓：FragmentTabHost - java.lang.IllegalArgumentException：如果你必须指定一个方法来创建选项卡内容 [英] Android: FragmentTabHost - java.lang.IllegalArgumentException: you must specify a way to create the tab content

问题描述

我有以下的类来创建一个 FragmentTabHost ：

I have the following in a class for creating a FragmentTabHost:

public class TabsActivity extends FragmentActivity {
private FragmentTabHost mTabHost;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.tabs);
    mTabHost = (FragmentTabHost)findViewById(android.R.id.tabhost);
    mTabHost.setup(this, getSupportFragmentManager(), R.id.realtabcontent);

    TabHost.TabSpec exploreSpec = mTabHost.newTabSpec("explore").setIndicator("Explore", getResources().getDrawable(R.drawable.exploreicon));
    mTabHost.addTab(exploreSpec);
}

}

我有一个单独的.xml文件，设置主机如在Android支持网站。这一切都是在第二个活动。我的主要活动有一组图像。单击某个加载此活动。该应用程序运行初期。当我点击一个图像加载此活动，虽然它崩溃。里面LogCat中，我发现了以下错误：

I have a separate .xml file for setting up the host as shown in the android support site. This is all in a second activity. My primary activity has a group of images. Clicking one loads this activity. The app runs initially. As soon as I tap an image to load this activity though it crashes. Inside LogCat I found the following error:

java.lang.IllegalArgumentException：如果你必须指定一个方法来创建选项卡内容

我似乎无法找到关于此错误的任何事情。

I can't seem to find any thing on this error.

推荐答案

而不能看到你的XML文件（R.layout.tabs）我会说一些没有设置完全正确。

Without being able to see your xml file (R.layout.tabs) I'd say something is not set up quite right.

相反的：

TabHost.TabSpec exploreSpec = mTabHost.newTabSpec("explore").setIndicator("Explore", getResources().getDrawable(R.drawable.exploreicon));
    mTabHost.addTab(exploreSpec);

尝试：

mTabHost.addTab(mTabHost.newTabSpec("explore").setIndicator("Explore", getResources().getDrawable(R.drawable.exploreicon)), TheAssociatedFragmentTab.class, null);

R.layout.tabs.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="#ffffff" >

    <android.support.v4.app.FragmentTabHost
        android:id="@android:id/tabhost"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#ffffff" >

        <FrameLayout
            android:id="@+id/tabcontent"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />
    </android.support.v4.app.FragmentTabHost>
</LinearLayout>

除此之外，你只需要一个ExplorerFragment类（扩展片段），它重写onCreateView和膨胀的布局，像这​​样的浏览器选项卡。

Beyond that you will just need an ExplorerFragment class (extends fragment) which Overrides onCreateView and inflates the layout for your explorer tab like so..

ExplorerFragment.java

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,  Bundle savedInstanceState) 
{
     super.onCreateView(inflater, container, savedInstanceState);
     return inflater.inflate(R.layout.explorer_fragment, container, false);
}

我并没有试图将一个图像在我的标签，但这code对我的作品。让我知道有没有什么帮助。

I didn't try to incorporate an image on my tabs, but this code works for me. Let me know if that helps.

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