[android-developers] Re: Replace the current view by an other view
you are probably calling from a seperate thread..after thread has done its wrk...use the handler and change the view.. On Wed, Jan 21, 2009 at 7:49 PM, Nico nicolas.d...@gmail.com 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 ? Thx --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Replace the current view by an other view
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 mmur...@commonsware.comwrote:
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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[android-developers] Re: Replace the current view by an other view
I did it :
// Create a thread to change the view
final Grid f_grid = grid;
Runnable mainThreadRunnable = new Runnable() {
public void run() {
m_activity.setContentView(f_grid);
}
};
// Run the thread
m_activity.runOnUiThread(mainThreadRunnable);
It works great, is it a correct way ?
On 21 jan, 15:23, for android forandr...@gmail.com wrote:
you are probably calling from a seperate thread..after thread has done its
wrk...use the handler and change the view..
On Wed, Jan 21, 2009 at 7:49 PM, Nico nicolas.d...@gmail.com 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 ?
Thx
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[android-developers] Re: Replace the current view by an other view
Thx a lot for help.
On 21 jan, 16:02, Mark Murphy mmur...@commonsware.com wrote:
Nico wrote:
I did it :
// Create a thread to change the view
final Grid f_grid = grid;
Runnable mainThreadRunnable = new Runnable() {
public void run() {
m_activity.setContentView(f_grid);
}
};
// Run the thread
m_activity.runOnUiThread(mainThreadRunnable);
That should work fine, AFAIK.
--
Mark Murphy (a Commons Guy)http://commonsware.com
Android Training in Sweden --http://www.sotrium.com/training.php
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You received this message because you are subscribed to the Google
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[android-developers] Re: Replace the current view by an other view
any help on this ??
On Wed, Jan 21, 2009 at 8:13 PM, for android forandr...@gmail.com 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 mmur...@commonsware.comwrote:
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
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google
Groups Android Developers group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers-unsubscr...@googlegroups.com
For more options, visit this group at
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[android-developers] Re: Replace the current view by an other view
The point of runOnUiThread() *is* to run code on the UI thread.
Therefore it must NOT be used for long running operations. Usually
runOnUiThread() is invoked from another thread.
On Wed, Jan 21, 2009 at 7:50 PM, for android forandr...@gmail.com wrote:
any help on this ??
On Wed, Jan 21, 2009 at 8:13 PM, for android forandr...@gmail.com 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 mmur...@commonsware.com
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
--
Romain Guy
Android framework engineer
romain...@android.com
Note: please don't send private questions to me, as I don't have time
to provide private support. All such questions should be posted on
public forums, where I and others can see and answer them
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google
Groups Android Developers group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers-unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
-~--~~~~--~~--~--~---
[android-developers] Re: Replace the current view by an other view
Oh ok..I think I understand it now..
On Thu, Jan 22, 2009 at 9:23 AM, Romain Guy romain...@google.com wrote:
The point of runOnUiThread() *is* to run code on the UI thread.
Therefore it must NOT be used for long running operations. Usually
runOnUiThread() is invoked from another thread.
On Wed, Jan 21, 2009 at 7:50 PM, for android forandr...@gmail.com wrote:
any help on this ??
On Wed, Jan 21, 2009 at 8:13 PM, for android forandr...@gmail.com
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 mmur...@commonsware.com
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
--
Romain Guy
Android framework engineer
romain...@android.com
Note: please don't send private questions to me, as I don't have time
to provide private support. All such questions should be posted on
public forums, where I and others can see and answer them
--~--~-~--~~~---~--~~
You received this message because you are subscribed to the Google
Groups Android Developers group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers-unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
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