Re: [android-developers] XML Layout SERIOUSLY misbehaving

[Jim Graham]

On Sun, Mar 25, 2012 at 02:25:20PM -0700, Romain Guy wrote:
> If your ImageView has a LinearLayout parent then you would write:
> 
> myImageView.setLayoutParams(new LinearLayout.LayoutParams());
> 
> If your ImageView has a FrameLayout parent, then you would write:
> 
> myImageView.setLayoutParams(new FrameLayout.LayoutParams());

[]

Ok, now THAT makes more sense.  :-)   And now I'm wishing I'd asked
here a few weeks ago...I was, however, thinking it might belong in
the beginner's group.  Now I wonder which group I should have posted
it in.

Thanks,
   --jim

-- 
THE SCORE:  ME:  2  CANCER:  0
73 DE N5IAL (/4)| Peter da Silva:  No, try "rm -rf /"
spooky1...@gmail.com| Dave Aronson:As your life flashes before
< Running FreeBSD 7.0 > |  your eyes, in the unit of time known as an
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Re: [android-developers] XML Layout SERIOUSLY misbehaving

[Romain Guy]

If your ImageView has a LinearLayout parent then you would write:

myImageView.setLayoutParams(new LinearLayout.LayoutParams());

If your ImageView has a FrameLayout parent, then you would write:

myImageView.setLayoutParams(new FrameLayout.LayoutParams());

And so on. This is why the LayoutInflater.inflate() method takes a
parent as an argument. The parent parameter is used to infer the type
of LayoutParams. That might be your bug if you are not building your
UI from Java code.

On Sun, Mar 25, 2012 at 2:17 PM, Jim Graham  wrote:
> On Sun, Mar 25, 2012 at 01:55:12PM -0700, Romain Guy wrote:
>> LinearLayout is not a FrameLayout. I just remembered that ScrollView
>> *is* a FrameLayout, my bad. The layout params of the ScrollView's
>> child should be ScrollView.LayoutParams (or FrameLayout.LayoutParams.)
>> A child must always use the layout params type declared in its parent.
>
> Ok, now I'm REALLY confused.  Let me see if I've got this right (and I'm
> not the least bit sure that I do).  If I have the following,
>
> 
>   
>   
> 
>
> To set parameters (e.g., scaleType, width, height, alpha (for the whole
> ImageView), etc., for the ImageView, I'm supposed to be setting it using
> LinearLayout.LayoutParams?  That's how I read the text above, but it
> sounds very, VERY strange.
>
> Later,
>   --jim
>
> --
> THE SCORE:  ME:  2  CANCER:  0
> 73 DE N5IAL (/4)        MiSTie #49997  < Running FreeBSD 7.0 >
> spooky1...@gmail.com ICBM/Hurricane: 30.44406N 86.59909W
>
>      "'Wrong' is one of those concepts that depends on witnesses."
>     --Catbert:  Evil Director of Human Resources (Dilbert, 05Nov09)
>
> Android Apps Listing at http://www.jstrack.org/barcodes.html
>
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Re: [android-developers] XML Layout SERIOUSLY misbehaving

[YuviDroid]

Actually.you need to use LinearLayout.LayoutParams to set the "layout
parameters". scaleType, alpha are the ImageView parameters. Basically,
anything that start with "layout_" is a layout parameter.

On Sun, Mar 25, 2012 at 11:22 PM, YuviDroid  wrote:

> To set parameters (e.g., scaleType, width, height, alpha (for the whole
>> ImageView), etc., for the ImageView, I'm supposed to be setting it using
>> LinearLayout.LayoutParams?  That's how I read the text above, but it
>> sounds very, VERY strange.
>
>
> Yep, that's right.
>
> On Sun, Mar 25, 2012 at 11:17 PM, Jim Graham  wrote:
>
>> On Sun, Mar 25, 2012 at 01:55:12PM -0700, Romain Guy wrote:
>> > LinearLayout is not a FrameLayout. I just remembered that ScrollView
>> > *is* a FrameLayout, my bad. The layout params of the ScrollView's
>> > child should be ScrollView.LayoutParams (or FrameLayout.LayoutParams.)
>> > A child must always use the layout params type declared in its parent.
>>
>> Ok, now I'm REALLY confused.  Let me see if I've got this right (and I'm
>> not the least bit sure that I do).  If I have the following,
>>
>> 
>>   
>>   
>> 
>>
>> To set parameters (e.g., scaleType, width, height, alpha (for the whole
>> ImageView), etc., for the ImageView, I'm supposed to be setting it using
>> LinearLayout.LayoutParams?  That's how I read the text above, but it
>> sounds very, VERY strange.
>>
>> Later,
>>   --jim
>>
>> --
>> THE SCORE:  ME:  2  CANCER:  0
>> 73 DE N5IAL (/4)MiSTie #49997  < Running FreeBSD 7.0 >
>> spooky1...@gmail.com ICBM/Hurricane: 30.44406N 86.59909W
>>
>>  "'Wrong' is one of those concepts that depends on witnesses."
>> --Catbert:  Evil Director of Human Resources (Dilbert, 05Nov09)
>>
>> Android Apps Listing at http://www.jstrack.org/barcodes.html
>>
>> --
>> 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
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>> android-developers+unsubscr...@googlegroups.com
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>>
>
>
>
> --
> YuviDroid
> Check out Launch-X  (a widget
> to quickly access your favorite apps and contacts!)
> http://android.yuvalsharon.net
>
>


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Re: [android-developers] XML Layout SERIOUSLY misbehaving

[Romain Guy]

No it's not. Only layout_* attributes map to LayoutParams.

On Sun, Mar 25, 2012 at 2:22 PM, YuviDroid  wrote:
>> To set parameters (e.g., scaleType, width, height, alpha (for the whole
>> ImageView), etc., for the ImageView, I'm supposed to be setting it using
>> LinearLayout.LayoutParams?  That's how I read the text above, but it
>> sounds very, VERY strange.
>
>
> Yep, that's right.
>
> On Sun, Mar 25, 2012 at 11:17 PM, Jim Graham  wrote:
>>
>> On Sun, Mar 25, 2012 at 01:55:12PM -0700, Romain Guy wrote:
>> > LinearLayout is not a FrameLayout. I just remembered that ScrollView
>> > *is* a FrameLayout, my bad. The layout params of the ScrollView's
>> > child should be ScrollView.LayoutParams (or FrameLayout.LayoutParams.)
>> > A child must always use the layout params type declared in its parent.
>>
>> Ok, now I'm REALLY confused.  Let me see if I've got this right (and I'm
>> not the least bit sure that I do).  If I have the following,
>>
>> 
>>   
>>   
>> 
>>
>> To set parameters (e.g., scaleType, width, height, alpha (for the whole
>> ImageView), etc., for the ImageView, I'm supposed to be setting it using
>> LinearLayout.LayoutParams?  That's how I read the text above, but it
>> sounds very, VERY strange.
>>
>> Later,
>>   --jim
>>
>> --
>> THE SCORE:  ME:  2  CANCER:  0
>> 73 DE N5IAL (/4)        MiSTie #49997  < Running FreeBSD 7.0 >
>> spooky1...@gmail.com ICBM/Hurricane: 30.44406N 86.59909W
>>
>>      "'Wrong' is one of those concepts that depends on witnesses."
>>     --Catbert:  Evil Director of Human Resources (Dilbert, 05Nov09)
>>
>> Android Apps Listing at http://www.jstrack.org/barcodes.html
>>
>> --
>> You received this message because you are subscribed to the Google
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>> http://groups.google.com/group/android-developers?hl=en
>
>
>
>
> --
> YuviDroid
> Check out Launch-X (a widget to quickly access your favorite apps and
> contacts!)
> http://android.yuvalsharon.net
>
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Re: [android-developers] XML Layout SERIOUSLY misbehaving

[YuviDroid]

>
> To set parameters (e.g., scaleType, width, height, alpha (for the whole
> ImageView), etc., for the ImageView, I'm supposed to be setting it using
> LinearLayout.LayoutParams?  That's how I read the text above, but it
> sounds very, VERY strange.


Yep, that's right.

On Sun, Mar 25, 2012 at 11:17 PM, Jim Graham  wrote:

> On Sun, Mar 25, 2012 at 01:55:12PM -0700, Romain Guy wrote:
> > LinearLayout is not a FrameLayout. I just remembered that ScrollView
> > *is* a FrameLayout, my bad. The layout params of the ScrollView's
> > child should be ScrollView.LayoutParams (or FrameLayout.LayoutParams.)
> > A child must always use the layout params type declared in its parent.
>
> Ok, now I'm REALLY confused.  Let me see if I've got this right (and I'm
> not the least bit sure that I do).  If I have the following,
>
> 
>   
>   
> 
>
> To set parameters (e.g., scaleType, width, height, alpha (for the whole
> ImageView), etc., for the ImageView, I'm supposed to be setting it using
> LinearLayout.LayoutParams?  That's how I read the text above, but it
> sounds very, VERY strange.
>
> Later,
>   --jim
>
> --
> THE SCORE:  ME:  2  CANCER:  0
> 73 DE N5IAL (/4)MiSTie #49997  < Running FreeBSD 7.0 >
> spooky1...@gmail.com ICBM/Hurricane: 30.44406N 86.59909W
>
>  "'Wrong' is one of those concepts that depends on witnesses."
> --Catbert:  Evil Director of Human Resources (Dilbert, 05Nov09)
>
> Android Apps Listing at http://www.jstrack.org/barcodes.html
>
> --
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>



-- 
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to quickly access your favorite apps and contacts!)
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Re: [android-developers] XML Layout SERIOUSLY misbehaving

[Jim Graham]

On Sun, Mar 25, 2012 at 01:55:12PM -0700, Romain Guy wrote:
> LinearLayout is not a FrameLayout. I just remembered that ScrollView
> *is* a FrameLayout, my bad. The layout params of the ScrollView's
> child should be ScrollView.LayoutParams (or FrameLayout.LayoutParams.)
> A child must always use the layout params type declared in its parent.

Ok, now I'm REALLY confused.  Let me see if I've got this right (and I'm
not the least bit sure that I do).  If I have the following,


   
   


To set parameters (e.g., scaleType, width, height, alpha (for the whole
ImageView), etc., for the ImageView, I'm supposed to be setting it using
LinearLayout.LayoutParams?  That's how I read the text above, but it
sounds very, VERY strange.

Later,
   --jim

-- 
THE SCORE:  ME:  2  CANCER:  0
73 DE N5IAL (/4)MiSTie #49997  < Running FreeBSD 7.0 >
spooky1...@gmail.com ICBM/Hurricane: 30.44406N 86.59909W

  "'Wrong' is one of those concepts that depends on witnesses."
 --Catbert:  Evil Director of Human Resources (Dilbert, 05Nov09)

Android Apps Listing at http://www.jstrack.org/barcodes.html

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Re: [android-developers] XML Layout SERIOUSLY misbehaving

[Romain Guy]

LinearLayout is not a FrameLayout. I just remembered that ScrollView
*is* a FrameLayout, my bad. The layout params of the ScrollView's
child should be ScrollView.LayoutParams (or FrameLayout.LayoutParams.)
A child must always use the layout params type declared in its parent.

On Sun, Mar 25, 2012 at 1:46 PM, Jim Graham  wrote:
> On Sun, Mar 25, 2012 at 01:35:14PM -0700, Romain Guy wrote:
>> It might now be a FrameLayout but a subclass of a FrameLayout. You can
>> see that the problem happens inside a ScrollView. What ScrollViews do
>> you have and what do you put in them?
>
> I should have mentioned---it happened before I put in the ScrollView,
> too.
>
> But to answer your question, as per the ScrollView docs, it can only wrap
> one item, and that's a LinearLayout.
>
> So is LinearLayout a subclass of FrameLayout, then?  I would never have
> guessed that (and if it's in the docs, I never saw it).  So should I
> change the cast for the LinearLayout params to FrameLayout, then?
> And do I need to import android.widget.FrameLayout?
>
> Sorry if any of these are stupid questions---I'm in unexplored territory
> with these problems, and have been for (how many weeks has this been
> driving me crazy, going from one set of documentation material to
> another, and another, and another, and ... ad nauseum?).  As I said in
> my first post, I finally gave up and had to post here.
>
> Thanks,
>   --jim
>
> PS:  no need to CC me...gmail nukes the duplicate copy when it sees
>     the duplicate Message-ID...and it'd still end up in this mbox
>     file instead of in /var/mail thanks to my procmail filters
>     that redirect all from this group here.  :-)
>
> --
> THE SCORE:  ME:  2  CANCER:  0
> 73 DE N5IAL (/4)            MiSTie #49997      < Running FreeBSD 7.0 >
> spooky1...@gmail.com                    ICBM/Hurr.: 30.44406N 86.59909W
>
>   "Now what *you* need is a proper pint of porter poured in a proper
>   pewter porter pot.."     --Peter Dalgaard in alt.sysadmin.recovery
>
> Android Apps Listing at http://www.jstrack.org/barcodes.html
>
> --
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Re: [android-developers] XML Layout SERIOUSLY misbehaving

[Jim Graham]

On Sun, Mar 25, 2012 at 01:35:14PM -0700, Romain Guy wrote:
> It might now be a FrameLayout but a subclass of a FrameLayout. You can
> see that the problem happens inside a ScrollView. What ScrollViews do
> you have and what do you put in them?

I should have mentioned---it happened before I put in the ScrollView,
too.

But to answer your question, as per the ScrollView docs, it can only wrap
one item, and that's a LinearLayout.

So is LinearLayout a subclass of FrameLayout, then?  I would never have
guessed that (and if it's in the docs, I never saw it).  So should I
change the cast for the LinearLayout params to FrameLayout, then?
And do I need to import android.widget.FrameLayout?

Sorry if any of these are stupid questions---I'm in unexplored territory
with these problems, and have been for (how many weeks has this been
driving me crazy, going from one set of documentation material to
another, and another, and another, and ... ad nauseum?).  As I said in
my first post, I finally gave up and had to post here.

Thanks,
   --jim

PS:  no need to CC me...gmail nukes the duplicate copy when it sees
 the duplicate Message-ID...and it'd still end up in this mbox
 file instead of in /var/mail thanks to my procmail filters
 that redirect all from this group here.  :-)

-- 
THE SCORE:  ME:  2  CANCER:  0
73 DE N5IAL (/4)MiSTie #49997  < Running FreeBSD 7.0 >
spooky1...@gmail.comICBM/Hurr.: 30.44406N 86.59909W

   "Now what *you* need is a proper pint of porter poured in a proper
   pewter porter pot.." --Peter Dalgaard in alt.sysadmin.recovery

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Re: [android-developers] XML Layout SERIOUSLY misbehaving

[Romain Guy]

It might now be a FrameLayout but a subclass of a FrameLayout. You can
see that the problem happens inside a ScrollView. What ScrollViews do
you have and what do you put in them?

On Sun, Mar 25, 2012 at 1:20 PM, Jim Graham  wrote:
> On Sun, Mar 25, 2012 at 10:14:12PM +0200, YuviDroid wrote:
>> By reading this:  android.widget.LinearLayout$LayoutParams cannot be cast
>> to android.widget.FrameLayout$LayoutParams
>>
>> I'd say you need to change this:
>>  msettingsLayout.setLayoutParams(new LinearLayout.LayoutParams(settingsw,
>> settingsh));
>> into:
>>  msettingsLayout.setLayoutParams(new *FrameLayout*.LayoutParams(settingsw,
>> settingsh));
>>
>> This is most probably because your LinearLayout  msettingsLayout  is inside
>> a FrameLayout, and so its layout params must be of its parent class.
>It might n
> Ok, where's the FrameLayout?  I haven't define one.  As I said in the
> original post, even the word "Frame" is *NOWHERE* in my project.  It''s
> not in the Java file.  It's not in the XML files..  It's not in the
> Manifest.  Basically (in Zsh):
>
>      $ cd Android/workspace/DroidProCam
>      $ frep -i frame **/*.xml **/*.java
>      $
>
> Nothing found.
>
> So, again, where IS this frame layout defined?
>
> Thanks,
>   --jim
>
> --
> THE SCORE:  ME:  2  CANCER:  0
> 73 DE N5IAL (/4)        | Tux (E Cat):  DS B+Wd Y 6 Y L+++ W+ C++/C++ I+++
> spooky1...@gmail.com    | T++ A E H+ S V- F++ Q+++ P/P+ B++ PA+ PL SC---
> < Running FreeBSD 7.0 > |
> ICBM / Hurricane:       | Tiggerbelle:  DS W+S+Bts % 1.5 X L W C+++/C+
>   30.44406N 86.59909W  | I+++  T A E++ H S++ V+++ Q+++ P  B++ PA++ PL+ SC
>
> Android Apps Listing at http://www.jstrack.org/barcodes.html
>
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Re: [android-developers] XML Layout SERIOUSLY misbehaving

[Jim Graham]

On Sun, Mar 25, 2012 at 10:14:12PM +0200, YuviDroid wrote:
> By reading this:  android.widget.LinearLayout$LayoutParams cannot be cast
> to android.widget.FrameLayout$LayoutParams
> 
> I'd say you need to change this:
>  msettingsLayout.setLayoutParams(new LinearLayout.LayoutParams(settingsw,
> settingsh));
> into:
>  msettingsLayout.setLayoutParams(new *FrameLayout*.LayoutParams(settingsw,
> settingsh));
> 
> This is most probably because your LinearLayout  msettingsLayout  is inside
> a FrameLayout, and so its layout params must be of its parent class.

Ok, where's the FrameLayout?  I haven't define one.  As I said in the
original post, even the word "Frame" is *NOWHERE* in my project.  It''s
not in the Java file.  It's not in the XML files..  It's not in the
Manifest.  Basically (in Zsh):

  $ cd Android/workspace/DroidProCam
  $ frep -i frame **/*.xml **/*.java
  $

Nothing found.

So, again, where IS this frame layout defined?

Thanks,
   --jim

-- 
THE SCORE:  ME:  2  CANCER:  0
73 DE N5IAL (/4)| Tux (E Cat):  DS B+Wd Y 6 Y L+++ W+ C++/C++ I+++
spooky1...@gmail.com| T++ A E H+ S V- F++ Q+++ P/P+ B++ PA+ PL SC---
< Running FreeBSD 7.0 > | 
ICBM / Hurricane:   | Tiggerbelle:  DS W+S+Bts % 1.5 X L W C+++/C+
   30.44406N 86.59909W  | I+++  T A E++ H S++ V+++ Q+++ P  B++ PA++ PL+ SC

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Re: [android-developers] XML Layout SERIOUSLY misbehaving

[YuviDroid]

By reading this:  android.widget.LinearLayout$LayoutParams cannot be cast
to android.widget.FrameLayout$LayoutParams

I'd say you need to change this:
 msettingsLayout.setLayoutParams(new LinearLayout.LayoutParams(settingsw,
settingsh));
into:
 msettingsLayout.setLayoutParams(new *FrameLayout*.LayoutParams(settingsw,
settingsh));

This is most probably because your LinearLayout  msettingsLayout  is inside
a FrameLayout, and so its layout params must be of its parent class.


Cheers,
Yuvi

DroidAhead
http://www.droidahead.com

On Sun, Mar 25, 2012 at 10:09 PM, Jim Graham  wrote:

> I'm trying to build the layout for my camera app.  The camera preview
> goes on the left, and is set to the largest supported size that fits
> within 65% of the display width and 100% of the display height.
>
> The remaining 35% of the width is for two things:  first, a TableLayout
> (set inside of a ScrollView) with textviews and spinners (side by side)
> for spinner labels and the spinners themselves.  Below that is a
> LinearLayout (horizontal) for a TextView and the shutter release image.
>
> The left side works fine.  No problem.  The right side works fine on my
> tablet, but not on my phone (Motorold Bravo MB520).  What inevitably
> happens with the layout on my phone is the textviews/spinners taking
> the full screen, and the shutter release button is nowhere to be seen.
>
> I've played around with the weights, and nothing seems to change the
> end result.
>
> I've tried setting the width and height of the image from Java...nothing.
>
> I've tried resizing the image and changing its density...no change.
>
> I've tried setting the width and height of the two layouts on the left
> (when both were LinearLayouts ... before the TableLayout), and every
> time I've tried to do this, I get a force close with the logcat data
> shown below, saying that "android.widget.LinearLayout$LayoutParams cannot
> be cast to android.widget.FrameLayout$LayoutParams".  Just one
> problem:  NOWHERE in any my project will you find the word "Frame"
> (ignoring case for the fgrep).
>
> Logcat output (relevant to the force close):
>
> ---  CUT HERE  ---
>
> 2012-03-25 14:43:42.320 E 24222/AndroidRuntime: FATAL EXCEPTION: main
> java.lang.ClassCastException: android.widget.LinearLayout$LayoutParams
> cannot be cast to android.widget.FrameLayout$LayoutParams
>at android.widget.FrameLayout.onMeasure(FrameLayout.java:268)
>at android.widget.ScrollView.onMeasure(ScrollView.java:308)
>at android.view.View.measure(View.java:10828)
>at
> android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4351)
>at
> android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1284)
>at
> android.widget.LinearLayout.measureVertical(LinearLayout.java:613)
>at android.widget.LinearLayout.onMeasure(LinearLayout.java:519)
>at android.view.View.measure(View.java:10828)
>at
> android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4351)
>at
> android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1284)
>at
> android.widget.LinearLayout.measureHorizontal(LinearLayout.java:956)
>at android.widget.LinearLayout.onMeasure(LinearLayout.java:521)
>at android.view.View.measure(View.java:10828)
>at
> android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4351)
>at android.widget.FrameLayout.onMeasure(FrameLayout.java:267)
>at android.view.View.measure(View.java:10828)
>at
> android.widget.LinearLayout.measureVertical(LinearLayout.java:764)
>at android.widget.LinearLayout.onMeasure(LinearLayout.java:519)
>at android.view.View.measure(View.java:10828)
>at
> android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4351)
>at android.widget.FrameLayout.onMeasure(FrameLayout.java:267)
>at
> com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:1912)
>at android.view.View.measure(View.java:10828)
>at android.view.ViewRoot.performTraversals(ViewRoot.java:938)
>at android.view.ViewRoot.handleMessage(ViewRoot.java:2040)
>at android.os.Handler.dispatchMessage(Handler.java:99)
>at android.os.Looper.loop(Looper.java:132)
>at android.app.ActivityThread.main(ActivityThread.java:4123)
>at java.lang.reflect.Method.invokeNative(Native Method)
>at java.lang.reflect.Method.invoke(Method.java:491)
>at
> com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
>at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
>at dalvik.system.NativeStart.main(Native Method)
>
> ---  CUT HERE  ---
>
> I should point out that I have imported android.widget.LinearLayout and
> android.widget.LinearLayout.LayoutParams, and the variables for the layouts
> are def

[android-developers] XML Layout SERIOUSLY misbehaving

[Jim Graham]

I'm trying to build the layout for my camera app.  The camera preview
goes on the left, and is set to the largest supported size that fits
within 65% of the display width and 100% of the display height.

The remaining 35% of the width is for two things:  first, a TableLayout
(set inside of a ScrollView) with textviews and spinners (side by side)
for spinner labels and the spinners themselves.  Below that is a
LinearLayout (horizontal) for a TextView and the shutter release image.

The left side works fine.  No problem.  The right side works fine on my
tablet, but not on my phone (Motorold Bravo MB520).  What inevitably
happens with the layout on my phone is the textviews/spinners taking
the full screen, and the shutter release button is nowhere to be seen.

I've played around with the weights, and nothing seems to change the
end result.

I've tried setting the width and height of the image from Java...nothing.

I've tried resizing the image and changing its density...no change.

I've tried setting the width and height of the two layouts on the left
(when both were LinearLayouts ... before the TableLayout), and every
time I've tried to do this, I get a force close with the logcat data
shown below, saying that "android.widget.LinearLayout$LayoutParams cannot
be cast to android.widget.FrameLayout$LayoutParams".  Just one
problem:  NOWHERE in any my project will you find the word "Frame"
(ignoring case for the fgrep).

Logcat output (relevant to the force close):

---  CUT HERE  ---

2012-03-25 14:43:42.320 E 24222/AndroidRuntime: FATAL EXCEPTION: main
java.lang.ClassCastException: android.widget.LinearLayout$LayoutParams cannot 
be cast to android.widget.FrameLayout$LayoutParams
at android.widget.FrameLayout.onMeasure(FrameLayout.java:268)
at android.widget.ScrollView.onMeasure(ScrollView.java:308)
at android.view.View.measure(View.java:10828)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4351)
at 
android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1284)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:613)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:519)
at android.view.View.measure(View.java:10828)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4351)
at 
android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1284)
at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:956)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:521)
at android.view.View.measure(View.java:10828)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4351)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:267)
at android.view.View.measure(View.java:10828)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:764)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:519)
at android.view.View.measure(View.java:10828)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4351)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:267)
at 
com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:1912)
at android.view.View.measure(View.java:10828)
at android.view.ViewRoot.performTraversals(ViewRoot.java:938)
at android.view.ViewRoot.handleMessage(ViewRoot.java:2040)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:132)
at android.app.ActivityThread.main(ActivityThread.java:4123)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:491)
at 
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
at dalvik.system.NativeStart.main(Native Method)

---  CUT HERE  ---

I should point out that I have imported android.widget.LinearLayout and
android.widget.LinearLayout.LayoutParams, and the variables for the layouts
are defined, e.g.,

   LinearLayout msettingsLayout;

and set by reference to their resource ID, e.g.,

   msettingsLayout = (LinearLayout) findViewById(R.id.settingsLayout);"

Changes to the width and height are set:

   msettingsLayout.setLayoutParams(new LinearLayout.LayoutParams(settingsw, 
settingsh));

And this is where the force close happens; comment out this line (and the
other one that differs only in variable/layout names), no force close.


I've double-checked my use of the above in the Dev Guide, and in several
Android programming books that I have (print versions and eBook
versions, as well as online tutorials and old apps of mine), and unless
I've just missed something (like a typo, etc.), it