我有一个问题:您的内容必须有一个TabHost其id属性为 'android.R.id.tabhost'
Java代码的
public class VisualizzaListaActivity extends TabActivity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
TabHost tabHost = getTabHost(); // The activity TabHost
TabHost.TabSpec spec; // Reusable TabSpec for each tab
Intent intent; // Reusable Intent for each tab
// Create an Intent to launch an Activity for the tab (to be reused)
intent = new Intent().setClass(this, DaAcquistareActivity.class);
// Initialize a TabSpec for each tab and add it to the TabHost
spec = tabHost.newTabSpec("daAcquistare").setIndicator("Da Acquistare").setContent(intent);
tabHost.addTab(spec);
// Do the same for the other tabs
intent = new Intent().setClass(this, AcquistatiActivity.class);
spec = tabHost.newTabSpec("acquistati").setIndicator("Acquistati").setContent(intent);
tabHost.addTab(spec);
tabHost.setCurrentTab(0);
}
}
XML代码
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/tabhost" <-------------- It's tabhost -.-"
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:padding="5dp">
<TabWidget
android:id="@android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5dp" />
</LinearLayout>
</TabHost>
and LogCat
12-16 15:26:22.519: E/AndroidRuntime(8262): java.lang.RuntimeException: Unable to start activity ComponentInfo{android.smile.matteo.spesaPRO/android.smile.matteo.spesaPRO.VisualizzaListaActivity}: java.lang.RuntimeException: Your content must have a TabHost whose id attribute is 'android.R.id.tabhost'
12-16 15:26:22.519: E/AndroidRuntime(8262): Caused by: java.lang.RuntimeException: Your content must have a TabHost whose id attribute is 'android.R.id.tabhost'
12-16 15:26:22.519: E/AndroidRuntime(8262): at android.smile.matteo.spesaPRO.VisualizzaListaActivity.onCreate(VisualizzaListaActivity.java:13)
问题
有人能告诉我为什么它说
您的内容必须有一个TabHost其id属性为 'android.R.id.tabhost'
当android:id = @android:id/tabhost?
您是否尝试过重建整个项目?有时候eclipse在这些情况下有点buggy – poitroae 2011-12-16 18:23:21
尝试删除你的R文件并重建。 – coder 2011-12-16 18:25:54
我尝试清理该项目,重新启动它,并删除R但没有任何内容。我试图在另一个应用程序中使用此代码,它已启动,但在此不运行 – 2011-12-16 18:33:18