我想在Android 2.1中使用AsyncTasks,但在我的代碼上得到錯誤。 我想顯示給用戶的標誌,然後顯示我的標籤,但得到我的AsyncTask錯誤。如果你可以看到我的代碼,並告訴我我的錯誤在哪裏。AsyncTasks和標籤
誤差
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.News/startPakage.tabs}: java.lang.RuntimeException: Your content must have a TabHost whose id attribute is 'android.R.id.tabhost'
在我的代碼是:
public class tabs extends TabActivity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.logoscreen);
new GetDataTask(this).execute();
private class GetDataTask extends AsyncTask<Void, Void, Integer> {
Context context;
GetDataTask(Context context){this.context=context;}
protected Integer doInBackground(Void... params) {
int waited = 0;
while (waited < 5000) {
try {
this.wait(100);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
waited += 100;
}
return 1;
}
protected void onPostExecute(Integer result) {
tabs.this.setContentView(R.layout.tabs);
//setContentView(R.layout.tabs);
TabHost tabHost= (TabHost)tabs.this.findViewById(android.R.id.tabhost);
//
TabHost.TabSpec spec; // Resusable 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(context,start.class);
// Initialize a TabSpec for each tab and add it to the TabHost
spec = tabHost.newTabSpec("Heb news").setIndicator("Heb news").setContent(intent);
tabHost.addTab(spec);
// Do the same for the other tabs
intent = new Intent().setClass(context, rusNewsP.ListRusNews.class);
spec = tabHost.newTabSpec("Rus News").setIndicator("Rus News").setContent(intent);
tabHost.addTab(spec);
tabHost.setCurrentTab(0);
}
}
而且我的XML是:
<?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="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>
非常感謝!
希望當你粘貼你的代碼時,你在結尾處留下了兩個閉合的大括號。如果沒有,那是你的問題。另外,當粘貼代碼時,確保所有標籤都處於良好狀態,當你不知道代碼屬於哪種方法時,很難閱讀代碼。 – dbDev 2012-02-25 18:02:31