[android-developers] Density independent values through code for views

2011-02-15 Thread Deepak Kumar 
Hi All,


   I have added views to layout in xml through code(i.e
dynamically).And given properties for button such as topMargin,leftMargin
etc.Yeah it will appear properly in one device.Because I gave values as per
adjustment to the current device(hdpi854) but if I will run the same code on
other screen devices i.e for mdpi it will give more gap.

   If we write views in xml ,we use to give values such as
100dp,100dpi etc.So, it can adjust according to the screen size.But if we
give these values dynamically ,it always I think take in terms of pixels.

   One of the solution can be multiplying these values with
ratio (according to device).Is there any other way to do the same?

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Re: [android-developers] Density independent values through code for views

2011-02-15 Thread Marcin Orlowski 
On 15 February 2011 15:03, Deepak Kumar deepak.kumar...@gmail.com wrote:

                One of the solution can be multiplying these values with
 ratio (according to device).Is there any other way to do the same?

Don't think there're much alternatives. What I do is keep all the
values in dip in my code (for items I need to draw/adjust etc from
code) and on setting/drawing have them multiplied by
getResources().getDisplayMetrics().density and that's shall do the
trick ( +0.5f for rounding).

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Marcin

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Re: [android-developers] Density independent values through code for views

2011-02-15 Thread Pepijn Van Eeckhoudt 

On 15/02/2011 15:03, Deepak Kumar wrote:
   One of the solution can be multiplying these values 
with ratio (according to device).Is there any other way to do the same?
In code, I define constants in 'dp' and then multiply with 
DisplayMetrics#density 
http://developer.android.com/reference/android/util/DisplayMetrics.html#density 
at runtime to get the correct pixel value.


Pepijn

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Re: [android-developers] Density independent values through code for views

2011-02-15 Thread Richard Leggett 
You can look into writing a utility method e.g. :

public class Util {
private static float DIP_SCALE = -1;

public static int dipsToPx(int dips, Context context) {
if(DIP_SCALE == -1) DIP_SCALE = 
context.getResources().getDisplayMetrics().density; 
return (int)(dips * DIP_SCALE + 0.5f); 
}
}

and using that in your code...

On 15 Feb 2011, at 14:13, Pepijn Van Eeckhoudt wrote:

 On 15/02/2011 15:03, Deepak Kumar wrote:
 
One of the solution can be multiplying these values with 
 ratio (according to device).Is there any other way to do the same?
 In code, I define constants in 'dp' and then multiply with 
 DisplayMetrics#density at runtime to get the correct pixel value.
 
 Pepijn
 
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Re: [android-developers] Density independent values through code for views

2011-02-15 Thread Deepak Kumar 
   Thanks for the code.It is proper for view alignment within layout in
different devices.But for textSize of textview its not happening properly.


I am using following code:-

TextView txtForIcon=new TextView(this);
txtForIcon.setLayoutParams(new
RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT));

 txtForIcon.setTextSize(*Utils.dipsToPx(11,this))*;
txtForIcon.setText(name);

size 11 is for hdpi(480*854) but for mdpi(320*480).It is appearing
very small.


   Thanks,

On Tue, Feb 15, 2011 at 7:54 PM, Richard Leggett
richard.legg...@gmail.comwrote:

 You can look into writing a utility method e.g. :

 *public* *class* Util {
 *private* *static* *float* *DIP_SCALE* = -1;

 *public* *static* *int* dipsToPx(*int* dips, Context context) {
 *if*(*DIP_SCALE* == -1) *DIP_SCALE* =
 context.getResources().getDisplayMetrics().density;
 *return* (*int*)(dips * *DIP_SCALE* + 0.5f);
 }
 }

 and using that in your code...

 On 15 Feb 2011, at 14:13, Pepijn Van Eeckhoudt wrote:

  On 15/02/2011 15:03, Deepak Kumar wrote:

One of the solution can be multiplying these values with
 ratio (according to device).Is there any other way to do the same?

 In code, I define constants in 'dp' and then multiply with
 DisplayMetrics#densityhttp://developer.android.com/reference/android/util/DisplayMetrics.html#densityat
  runtime to get the correct pixel value.

 Pepijn

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Re: [android-developers] Density independent values through code for views

2011-02-15 Thread Dianne Hackborn 
That is the correct code.  What do you mean by appearing very small?  Of
course at mdpi it will be significantly smaller than hdpi.

On Tue, Feb 15, 2011 at 8:29 AM, Deepak Kumar deepak.kumar...@gmail.comwrote:


Thanks for the code.It is proper for view alignment within layout in
 different devices.But for textSize of textview its not happening properly.


 I am using following code:-

 TextView txtForIcon=new TextView(this);
 txtForIcon.setLayoutParams(new
 RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT));

  txtForIcon.setTextSize(*Utils.dipsToPx(11,this))*;
 txtForIcon.setText(name);

 size 11 is for hdpi(480*854) but for mdpi(320*480).It is appearing
 very small.


Thanks,


 On Tue, Feb 15, 2011 at 7:54 PM, Richard Leggett 
 richard.legg...@gmail.com wrote:

 You can look into writing a utility method e.g. :

 *public* *class* Util {
  *private* *static* *float* *DIP_SCALE* = -1;

 *public* *static* *int* dipsToPx(*int* dips, Context context) {
  *if*(*DIP_SCALE* == -1) *DIP_SCALE* =
 context.getResources().getDisplayMetrics().density;
  *return* (*int*)(dips * *DIP_SCALE* + 0.5f);
  }
 }

 and using that in your code...

 On 15 Feb 2011, at 14:13, Pepijn Van Eeckhoudt wrote:

  On 15/02/2011 15:03, Deepak Kumar wrote:

One of the solution can be multiplying these values with
 ratio (according to device).Is there any other way to do the same?

 In code, I define constants in 'dp' and then multiply with
 DisplayMetrics#densityhttp://developer.android.com/reference/android/util/DisplayMetrics.html#densityat
  runtime to get the correct pixel value.

 Pepijn

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hack...@android.com

Note: please don't send private questions to me, as I don't have time to
provide private support, and so won't reply to such e-mails.  All such
questions should be posted on public forums, where I and others can see and
answer them.

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Re: [android-developers] Density independent values through code for views

2011-02-15 Thread Dianne Hackborn 
(For the code you have, at mdpi the density scale is 1, so you just end up
with a size of 11, which yes is pretty small.)

On Tue, Feb 15, 2011 at 9:07 AM, Dianne Hackborn hack...@android.comwrote:

 That is the correct code.  What do you mean by appearing very small?  Of
 course at mdpi it will be significantly smaller than hdpi.


 On Tue, Feb 15, 2011 at 8:29 AM, Deepak Kumar 
 deepak.kumar...@gmail.comwrote:


Thanks for the code.It is proper for view alignment within layout in
 different devices.But for textSize of textview its not happening properly.


 I am using following code:-

 TextView txtForIcon=new TextView(this);
 txtForIcon.setLayoutParams(new
 RelativeLayout.LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT));

  txtForIcon.setTextSize(*Utils.dipsToPx(11,this))*;
 txtForIcon.setText(name);

 size 11 is for hdpi(480*854) but for mdpi(320*480).It is appearing
 very small.


Thanks,


 On Tue, Feb 15, 2011 at 7:54 PM, Richard Leggett 
 richard.legg...@gmail.com wrote:

 You can look into writing a utility method e.g. :

 *public* *class* Util {
  *private* *static* *float* *DIP_SCALE* = -1;

 *public* *static* *int* dipsToPx(*int* dips, Context context) {
  *if*(*DIP_SCALE* == -1) *DIP_SCALE* =
 context.getResources().getDisplayMetrics().density;
  *return* (*int*)(dips * *DIP_SCALE* + 0.5f);
  }
 }

 and using that in your code...

 On 15 Feb 2011, at 14:13, Pepijn Van Eeckhoudt wrote:

  On 15/02/2011 15:03, Deepak Kumar wrote:

One of the solution can be multiplying these values with
 ratio (according to device).Is there any other way to do the same?

 In code, I define constants in 'dp' and then multiply with
 DisplayMetrics#densityhttp://developer.android.com/reference/android/util/DisplayMetrics.html#densityat
  runtime to get the correct pixel value.

 Pepijn

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 --
 Dianne Hackborn
 Android framework engineer
 hack...@android.com

 Note: please don't send private questions to me, as I don't have time to
 provide private support, and so won't reply to such e-mails.  All such
 questions should be posted on public forums, where I and others can see and
 answer them.




-- 
Dianne Hackborn
Android framework engineer
hack...@android.com

Note: please don't send private questions to me, as I don't have time to
provide private support, and so won't reply to such e-mails.  All such
questions should be posted on public forums, where I and others can see and
answer them.

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