Question

例如，请参阅以下tutorial，了解我的标签最初的设置方式。

我想要另一个TabActivity而不是在其中一个选项卡上运行的正常活动。所以我要做的是在TabActivity中运行TabActivity。我认为问题在于ID的冲突。我试图通过更改辅助活动的xml文件中的ID并在活动中手动调用它来解决这个问题，但是没有运气。

我一直在寻找解决方案的时间，但却什么也没有。

Answer 1

可以使用应用程序进行多个标签活动。

例如：应用程序包含一个带有两个选项卡的Launcher TabActivity（HomeTabActivity）：选项卡1和选项卡2

Tab 1 can be a TabActivity with two or more tabs.
Tab 2 can be a TabActivity with two or more tabs. 

FirstTab, SecondTab, ThirdTab and FourthTab are simple activities actings as child for child of HomeTabActivity.

xml files containing TabHost as parent element
1. hometab.xml
2. tab1.xml
3. tab2.xml

To differentiate between HomeTabActivity and Its child TabActivities i.e Tab1 and Tab2 
I have put TabWidget at top for HomeTabActivity and at bottom for Tab1 and Tab2.

HomeTabActivity（非常第一个主要标签活动）：

public class HomeTabActivity extends TabActivity 
{
    private TabHost mTabHost = null;
    private Intent mIntent = null;
    private TabHost.TabSpec mTabSpec = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.hometab); 
        initializeTabs();
    }

    private void initializeTabs() {
        mTabHost = getTabHost();

        mIntent = new Intent().setClass(this, Tab1.class);
        mTabSpec = mTabHost
                .newTabSpec("Tab1")
                .setIndicator("Tab1",
                        getResources().getDrawable(R.drawable.ic_launcher))
                .setContent(mIntent);
        mTabHost.addTab(mTabSpec);

        mIntent = new Intent().setClass(this, Tab2.class);
        mTabSpec = mTabHost
                .newTabSpec("Tab2")
                .setIndicator("Tab2",
                        getResources().getDrawable(R.drawable.ic_launcher))
                .setContent(mIntent);
        mTabHost.addTab(mTabSpec);

        mTabHost.setCurrentTab(0);
    }

}

Tab1（HomeTabActivity中嵌入的TabActivity）：

public class Tab1 extends TabActivity 
{
    private TabHost mTabHost = null;
    private Intent mIntent = null;
    private TabHost.TabSpec mTabSpec = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.tab1);
        initializeTabs();
    }

    private void initializeTabs() {
        mTabHost = getTabHost();
        mIntent = new Intent().setClass(this, FirstTab.class);

        mTabSpec = mTabHost
                .newTabSpec("Tab1 Child 1")
                .setIndicator("Tab1 Child 1",
                        getResources().getDrawable(R.drawable.ic_launcher))
                .setContent(mIntent);
        mTabHost.addTab(mTabSpec);

        mIntent = new Intent().setClass(this, SecondTab.class);
        mTabSpec = mTabHost
                .newTabSpec("Tab1 Child 2")
                .setIndicator("Tab1 Child 2",
                        getResources().getDrawable(R.drawable.ic_launcher))
                .setContent(mIntent);
        mTabHost.addTab(mTabSpec);
        mTabHost.setCurrentTab(0);
    }
}

Tab2（HomeTabActivity中嵌入的另一个TabActivity）：

public class Tab2 extends TabActivity 
{
    private TabHost mTabHost = null;
    private Intent mIntent = null;
    private TabHost.TabSpec mTabSpec = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.tab2);
        initializeTabs();
    }

    private void initializeTabs() {
        mTabHost = getTabHost();
        mIntent = new Intent().setClass(this, ThirdTab.class);

        mTabSpec = mTabHost
                .newTabSpec("Tab2 Child 1")
                .setIndicator("Tab2 Child 1",
                        getResources().getDrawable(R.drawable.ic_launcher))
                .setContent(mIntent);
        mTabHost.addTab(mTabSpec);

        mIntent = new Intent().setClass(this, FourthTab.class);
        mTabSpec = mTabHost
                .newTabSpec("Tab2 Child 2")
                .setIndicator("Tab2 Child 2",
                        getResources().getDrawable(R.drawable.ic_launcher))
                .setContent(mIntent);
        mTabHost.addTab(mTabSpec);
        mTabHost.setCurrentTab(1);
    }
}

<强> hometab.xml

<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/tabhost"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >

        <TabWidget
            android:id="@android:id/tabs"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" >
        </TabWidget>

        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="match_parent"
            android:layout_height="match_parent" >
        </FrameLayout>
    </LinearLayout>

</TabHost>

tab1.xml和tab2.xml

<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/tabhost"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >

        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="match_parent"
            android:layout_height="match_parent" 
            android:background="@color/androidblue"
            android:layout_weight="1">
        </FrameLayout>

        <TabWidget
            android:id="@android:id/tabs"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" 
            android:layout_weight="0">
        </TabWidget>
    </LinearLayout>

</TabHost>

一个应用程序中的多个Tab活动

1 个答案: