我想在不扩展 TabActivity 的情况下创建选项卡。(原因是 TabActivity 无法处理看起来的自定义标题栏)。我有
public class startTab extends Activity {
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.mylayout);
Resources res = getResources();
LocalActivityManager mlam = new LocalActivityManager(this, false);
TabHost tabHost = (TabHost) findViewById(R.id.tabhost);
tabHost.setup(mlam);
TabHost.TabSpec spec;
Intent intent;
intent = new Intent().setClass(this, Show1.class);
spec = tabHost.newTabSpec("Items").setIndicator("Items", res.getDrawable(R.drawable.items32_ldpi)).setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this, Show2.class);
spec = tabHost.newTabSpec("Users").setIndicator("Users",res.getDrawable(R.drawable.user32_ldpi)).setContent(intent);
tabHost.addTab(spec);
}
}
我得到的错误是
07-02 07:11:12.715: ERROR/AndroidRuntime(411):
Caused by: java.lang.IllegalStateException: Activities can't be added until the containing group has been created.
视图的 xml 是
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/tabhost" android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout android:orientation="vertical"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:paddingTop="5dip">
<TabWidget android:id="@android:id/tabs"
android:layout_width="fill_parent" android:layout_height="fill_parent"></TabWidget>
<FrameLayout android:id="@android:id/tabcontent"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:paddingTop="5dip">
</FrameLayout>
</LinearLayout>
</TabHost>
我在某处读到我必须使用 LocalActivityManager,我认为我在那里遗漏了一些东西。任何人的想法?
谢谢!