any help on this ??
On Wed, Jan 21, 2009 at 8:13 PM, for android <[email protected]> wrote:
> i have one question around the runOnUiThread...Basically when i used this
> method in the onCreate/onStart of the Activity,i found that it works quite
> differently than i expect..
>
> For example in the onCreate/onStart..say I have long running operation
> before which i want to render the UI with a progress bar.and after the long
> runnin operation is complete remove the progress bar and show the view..In
> this case I found that the UI is rendered only after the long running
> operation...so i end up not seeing the progress bar..I ended up using the
> handler...Am i going wrong in my understanding of this method?
>
>
>
> protected void onStart(){
> super.onStart();
> ////Progress Bar Visible
> runOnUiThread( new Thread() {
> // go get our feed!
> public void run() {
> //longrunning operation
> //Progress Bar Gone
> //show the required view
>
> }
> });
>
> }
>
> On Wed, Jan 21, 2009 at 7:55 PM, Mark Murphy <[email protected]>wrote:
>
>>
>> Nico wrote:
>> > Hi,
>> > I need to replace the current View (set by the activity.setContentView
>> > method) by an other.
>> > When I call activity.setContentView two times, I get this exception :
>> > 01-21 14:13:54.747: WARN/System.err(1156): android.view.ViewRoot
>> > $CalledFromWrongThreadException: Only the original thread that created
>> > a view hierarchy can touch its views.
>> > 01-21 14:13:54.757: WARN/System.err(1156): at
>> > android.view.ViewRoot.checkThread(ViewRoot.java:1849)
>> > 01-21 14:13:54.757: WARN/System.err(1156): at
>> > android.view.ViewRoot.requestLayout(ViewRoot.java:455)
>> > 01-21 14:13:54.767: WARN/System.err(1156): at
>> > android.view.View.requestLayout(View.java:6575)
>> > 01-21 14:13:54.767: WARN/System.err(1156): at
>> > android.view.View.requestLayout(View.java:6575)
>> > 01-21 14:13:54.777: WARN/System.err(1156): at
>> > android.view.View.requestLayout(View.java:6575)
>> > 01-21 14:13:54.777: WARN/System.err(1156): at
>> > android.view.ViewGroup.removeAllViews(ViewGroup.java:2033)
>> > What is problem ?
>>
>> As the exception says: "Only the original thread that created
>> a view hierarchy can touch its views".
>>
>> Are you attempting to call setContentView() from a background thread? If
>> so, arrange to call it on the UI thread, via post(), runOnUiThread(), or
>> a Handler.
>>
>> --
>> Mark Murphy (a Commons Guy)
>> http://commonsware.com
>> Android Training in Sweden -- http://www.sotrium.com/training.php
>>
>> >>
>>
>
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