我不知道爲什麼我的webview無法加載到我的tabhost/tabwidget中。對於tabhost/tabwidget,我使用的是Android Developer提供的教程。另外,在我的logcat中,警告似乎是在tab1Activity.java,將警告指向「wv.loadDataWithBaseURL(」http://lovetherings.livejournal.com/961.html「,myString,」text/html「, 「UTF-8」,「about:blank」);「無法在標籤視圖中加載webview
以下是我的代碼。誰能幫我?非常感謝! :d
這裏是我的main.xml
<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"
>
<WebView
android:id="@+id/webview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
</FrameLayout>
</LinearLayout>
我的主要活動
public class HelloTabWidgetMain extends TabActivity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Resources res = getResources(); // Resource object to get Drawables
TabHost tabHost = getTabHost(); // The activity 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(this, ArtistsActivity.class);
// Initialize a TabSpec for each tab and add it to the TabHost
spec = tabHost.newTabSpec("tab1").setIndicator("tab1",
res.getDrawable(R.drawable.ic_tab_tab1))
.setContent(intent);
tabHost.addTab(spec);
// Do the same for the other tabs
intent = new Intent().setClass(this, tab2Activity.class);
spec = tabHost.newTabSpec("tab2").setIndicator("tab2",
res.getDrawable(R.drawable.ic_tab_tab2))
.setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this, tab3Activity.class);
spec = tabHost.newTabSpec("tab3").setIndicator("tab3",
res.getDrawable(R.drawable.ic_tab_tab3))
.setContent(intent);
tabHost.addTab(spec);
tabHost.setCurrentTab(0);
}
}
和我的標籤活動(在這裏我想我的WebView要顯示的內容)
public class tab1Activity extends Activity{
WebView wv;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
try {
URL url = new URL("http://lovetherings.livejournal.com/961.html");
// Make the connection
URLConnection conn = url.openConnection();
BufferedReader reader = new BufferedReader(
new InputStreamReader(conn.getInputStream()));
// Read the contents line by line (assume it is text),
// storing it all into one string
String content ="";
String line = reader.readLine();
while (line != null) {
content += line + "\n";
line = reader.readLine();
}
reader.close();
String myString = content.substring(content.indexOf("<newcollection>"));
int start = myString.indexOf("<newcollection>");
if (start < 0) {
Log.d(this.toString(), "collection start tag not found");
}
else {
int end = myString.indexOf("</newcollection>", start) + 8;
if (end < 0) {
Log.d(this.toString(), "collection end tag not found");
} else {
myString = "<html><body>" + myString.substring(start, end) + "</body></html>";
}
WebView wv = (WebView)findViewById(R.id.webview);
wv.loadDataWithBaseURL("http://lovetherings.livejournal.com/961.html", myString, "text/html", "UTF-8", "about:blank");
}
} catch (Exception ex) {
ex.printStackTrace();
// Display the string in txt_content
//TextView txtContent = (TextView)findViewById(R.id.txt_content);
//txtContent.setText(myString);
}
}
}
請幫幫我!提前致謝!
不,我確實有那個根節點。只是當我複製到這裏時,它消失了,我可能錯過了複製根節點。 – Winona 2011-06-03 15:33:58