[android-developers] Re: Programmatically Update Flash Setting (or any Camera.Parameters)
I found the solution:
/** Note: _flashButton and _poladroidCamera are decleared outside the
scope for this method in the same Activity class. **/
/**
* Set's the flash icon's drawable and updates the camera
instance's settings to reflect the new flash state.
* NOTE This method is called on an ImageButton click.
*
* @param drawableId
* @param flashMode
*/
private void setFlashIcon(int drawableId, String flashMode)
{
_flashButton.setBackgroundDrawable(getResources().getDrawable(drawableId));
_poladroidCamera.setCurrentFlashMode(flashMode);
_poladroidCamera.surfaceChanged(null, 0, 0,0); // this is the
magic sauce
}
Let me know if you have any questions.
On Feb 10, 3:00 pm, Joe McCann wrote:
> Kevin,
>
> You are spot on and I'm yet to find the right/most efficient
> solution. I really don't want to have to do some silly hack as I
> would think there's a way (maybe with threads?) that is the most
> efficient approach.
>
> joe
>
> On Feb 10, 2:15 pm, Kevin Duffey wrote:
>
>
>
>
>
>
>
> > He's saying that calling that after the preview has been set up.. doesn't
> > seem to immediately take affect. You either have to recreate the surface to
> > change camera parameters, or use a separate activity to "pause" the current
> > camera preview activity, then when that activity closes, it causes a
> > onSurfaceChanged() call which then picks up the change. I am guessing the OP
> > wants to do something like the camera app does (at least on my original
> > droid) where you can flip some switches/buttons while the preview is running
> > and they affect how the camera works without having to recreate the preview
> > surfaceview each time a change occurs. If you can turn flash on/off, zoom,
> > auto focus on/off, etc with immediate changes that when the picture is
> > taken, are applied.
>
> > On Thu, Feb 10, 2011 at 11:42 AM, Stephen Lebed wrote:
> > > Unless I dont understand the question correctly,
> > > Camera.setParameters() should do what you need.
>
> > > Hope this helps.
>
> > > Stephen Lebed
> > > Developer
> > >http://apps.mechnology.com
>
> > > On Feb 10, 9:28 am, Joe McCann wrote:
> > > > I'm trying to avoid having to rewrite the Android source for the
> > > > native camera app (as it is a cluster***k of code), but am curious as
> > > > to the proper, most efficient away of being able to update the Camera
> > > > Parameters AFTER the SurfaceView of the Camera has been created and
> > > > "opened".
>
> > > > For example, if you have a button that toggles the setting of On, Off,
> > > > or Auto for the Flash, this initial parameter value is set when the
> > > > Camera is initialized (let's say Auto by default, if, of course, the
> > > > device supports it). If you want to switch it to Off, WHILE the
> > > > current view is the instance of the Camera/SurfaceView, you press the
> > > > button and it "sets" the new parameter to the camera to "OFF";
> > > > however, the CURRENT instance of the camera does not update it's
> > > > camera settings, meaning if you take the picture the Auto flash
> > > > setting is still enabled.
>
> > > > Now, if you say launch a new Activity, like a Preferences screen, and
> > > > then go back to the Camera view, the camera now has the "OFF"
> > > > setting. This clearly has to do with the surfaceChanged() method as
> > > > it is grabbing the NEW camera parameters and updating the camera
> > > > settings to reflect that.
>
> > > > In a nutshell, I'm wondering if there is a way inside to update the
> > > > CURRENT instance of the Camera and what a preferred approach would be.
>
> > > > Thanks!
>
> > > --
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[android-developers] Re: Programmatically Update Flash Setting (or any Camera.Parameters)
Kevin, You are spot on and I'm yet to find the right/most efficient solution. I really don't want to have to do some silly hack as I would think there's a way (maybe with threads?) that is the most efficient approach. joe On Feb 10, 2:15 pm, Kevin Duffey wrote: > He's saying that calling that after the preview has been set up.. doesn't > seem to immediately take affect. You either have to recreate the surface to > change camera parameters, or use a separate activity to "pause" the current > camera preview activity, then when that activity closes, it causes a > onSurfaceChanged() call which then picks up the change. I am guessing the OP > wants to do something like the camera app does (at least on my original > droid) where you can flip some switches/buttons while the preview is running > and they affect how the camera works without having to recreate the preview > surfaceview each time a change occurs. If you can turn flash on/off, zoom, > auto focus on/off, etc with immediate changes that when the picture is > taken, are applied. > > > > > > > > On Thu, Feb 10, 2011 at 11:42 AM, Stephen Lebed wrote: > > Unless I dont understand the question correctly, > > Camera.setParameters() should do what you need. > > > Hope this helps. > > > Stephen Lebed > > Developer > >http://apps.mechnology.com > > > On Feb 10, 9:28 am, Joe McCann wrote: > > > I'm trying to avoid having to rewrite the Android source for the > > > native camera app (as it is a cluster***k of code), but am curious as > > > to the proper, most efficient away of being able to update the Camera > > > Parameters AFTER the SurfaceView of the Camera has been created and > > > "opened". > > > > For example, if you have a button that toggles the setting of On, Off, > > > or Auto for the Flash, this initial parameter value is set when the > > > Camera is initialized (let's say Auto by default, if, of course, the > > > device supports it). If you want to switch it to Off, WHILE the > > > current view is the instance of the Camera/SurfaceView, you press the > > > button and it "sets" the new parameter to the camera to "OFF"; > > > however, the CURRENT instance of the camera does not update it's > > > camera settings, meaning if you take the picture the Auto flash > > > setting is still enabled. > > > > Now, if you say launch a new Activity, like a Preferences screen, and > > > then go back to the Camera view, the camera now has the "OFF" > > > setting. This clearly has to do with the surfaceChanged() method as > > > it is grabbing the NEW camera parameters and updating the camera > > > settings to reflect that. > > > > In a nutshell, I'm wondering if there is a way inside to update the > > > CURRENT instance of the Camera and what a preferred approach would be. > > > > Thanks! > > > -- > > 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 -- 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
Re: [android-developers] Re: Programmatically Update Flash Setting (or any Camera.Parameters)
He's saying that calling that after the preview has been set up.. doesn't seem to immediately take affect. You either have to recreate the surface to change camera parameters, or use a separate activity to "pause" the current camera preview activity, then when that activity closes, it causes a onSurfaceChanged() call which then picks up the change. I am guessing the OP wants to do something like the camera app does (at least on my original droid) where you can flip some switches/buttons while the preview is running and they affect how the camera works without having to recreate the preview surfaceview each time a change occurs. If you can turn flash on/off, zoom, auto focus on/off, etc with immediate changes that when the picture is taken, are applied. On Thu, Feb 10, 2011 at 11:42 AM, Stephen Lebed wrote: > Unless I dont understand the question correctly, > Camera.setParameters() should do what you need. > > Hope this helps. > > Stephen Lebed > Developer > http://apps.mechnology.com > > > On Feb 10, 9:28 am, Joe McCann wrote: > > I'm trying to avoid having to rewrite the Android source for the > > native camera app (as it is a cluster***k of code), but am curious as > > to the proper, most efficient away of being able to update the Camera > > Parameters AFTER the SurfaceView of the Camera has been created and > > "opened". > > > > For example, if you have a button that toggles the setting of On, Off, > > or Auto for the Flash, this initial parameter value is set when the > > Camera is initialized (let's say Auto by default, if, of course, the > > device supports it). If you want to switch it to Off, WHILE the > > current view is the instance of the Camera/SurfaceView, you press the > > button and it "sets" the new parameter to the camera to "OFF"; > > however, the CURRENT instance of the camera does not update it's > > camera settings, meaning if you take the picture the Auto flash > > setting is still enabled. > > > > Now, if you say launch a new Activity, like a Preferences screen, and > > then go back to the Camera view, the camera now has the "OFF" > > setting. This clearly has to do with the surfaceChanged() method as > > it is grabbing the NEW camera parameters and updating the camera > > settings to reflect that. > > > > In a nutshell, I'm wondering if there is a way inside to update the > > CURRENT instance of the Camera and what a preferred approach would be. > > > > Thanks! > > -- > 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 > -- 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: Programmatically Update Flash Setting (or any Camera.Parameters)
Unless I dont understand the question correctly, Camera.setParameters() should do what you need. Hope this helps. Stephen Lebed Developer http://apps.mechnology.com On Feb 10, 9:28 am, Joe McCann wrote: > I'm trying to avoid having to rewrite the Android source for the > native camera app (as it is a cluster***k of code), but am curious as > to the proper, most efficient away of being able to update the Camera > Parameters AFTER the SurfaceView of the Camera has been created and > "opened". > > For example, if you have a button that toggles the setting of On, Off, > or Auto for the Flash, this initial parameter value is set when the > Camera is initialized (let's say Auto by default, if, of course, the > device supports it). If you want to switch it to Off, WHILE the > current view is the instance of the Camera/SurfaceView, you press the > button and it "sets" the new parameter to the camera to "OFF"; > however, the CURRENT instance of the camera does not update it's > camera settings, meaning if you take the picture the Auto flash > setting is still enabled. > > Now, if you say launch a new Activity, like a Preferences screen, and > then go back to the Camera view, the camera now has the "OFF" > setting. This clearly has to do with the surfaceChanged() method as > it is grabbing the NEW camera parameters and updating the camera > settings to reflect that. > > In a nutshell, I'm wondering if there is a way inside to update the > CURRENT instance of the Camera and what a preferred approach would be. > > Thanks! -- 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
