Hi,
Just did this. Actually the problem was not a mSelectedTab = -1,
but rather a mSelectedTab = 1 and a getChildCount = 1. This
problem I do not seen on Android 4.0.3.
The workaround code that works for me is:
public class TabWidgetFix extends TabWidget {
private final View dummy;
/**
* <p>Create a tab widget fix.</p>
* @param c The context.
*/
public TabWidgetFix(Context c) {
super(c);
dummy = new View(c);
}
/**
* <p>Retrieve a child tab view.</p>
*
* @param i The index.
* @return The child tab view.
*/
public View getChildAt(int i) {
if (i < 0 || i >= getChildCount())
return dummy;
return super.getChildAt(i);
}
}
But there remains one minor problem. I use the
clearAllTabs() based code:
tabHost.clearAllTabs();
tabHost.addTab(spec);
Since there is no removeTab API available. But now
some of the sub activities in the activity loose their
blinking cursor.
Bye
Kostya Vasilyev schrieb:
You could try extending the framework class and overriding relevant methods.
16 февраля 2012 г. 15:58 пользователь Jan Burse<[email protected]> написал:
Dear All,
Is there some workaround for a null pointer exception
in TabWidget. It basically happens in the following code:
tabHost.clearAllTabs();
tabHost.addTab(spec);
The clearAllTabs sets the mSelectedTab to -1. The problem is
some sloppy code in the Android 2.3.7 version of TabWidget:
337 public void setCurrentTab(int index) {
[...]
342 getChildTabViewAt(mSelectedTab).setSelected(false);
The crash is in 342 since getChildTabViewAt returns null
when mSelectedTab == -1.
This was fixed in the Android 4.0.3 version or maybe before
of TabWidget:
386 public void [More ...] setCurrentTab(int index) {
[...]
391 if (mSelectedTab != -1) {
392 getChildTabViewAt(mSelectedTab).setSelected(false);
393 }
How would one go about to workaround the problem in Android 2.3.7?
Bye
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