Android: couldn't save which view has focus because the focused view ### has no ID

Problem:

Android: couldn't save which view has focus because the focused view ### has no ID

There are two possible causes:

Solution 1:

<Application

Android: icon = "@ drawable/icon" Android: Label = "@ string/app_name">

<Activity

Android: Label = "@ string/app_name"

Android: configchanges ="Orientation | keyboardhidden | keyboard | screenlayout"

Android: Name = ". Main">

<Intent-filter>

<Action Android: Name = "android. Intent. Action. Main"/>

<Category Android: Name = "android. Intent. Category. launcher"/>

</Intent-filter>

</Activity>

</Application>

Solution 2:

What probably happened is that you created a thread in the surfacecreated () method but didn't stop it or get rid of it in the surfacedestroy () method.

When you didn't give a theme for the preferences, it took over the whole screen and your old surface was destroyed. but when you specified a dialog-like theme, the old surface was still there because it was visible underneath the preferences.

Public void surfacecreated (surfaceholder holder)
{
If (_ thread = NULL| _ Thread. getstate () = thread. state. Terminated)
{
_ Thread = new tutorialthread (getholder (), this );
_ Thread. setrunning (true );
_ Thread. Start ();
}
Else
{
_ Thread. setrunning (true );
_ Thread. Start ();
}
}

This solved the problem for me, a thread's start method cannot be called twice, so I had to reallocate...

Http://forums.pragprog.com/forums/138/topics/4085