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About supporting multiple screen.

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By Pryato, Junior Member on 16th May 2014, 11:25 PM
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Hi,
About support for multiple screens , I have understood to be based on the dpi , screen density .
As I read there are 4 types of density in android devices, approximately:

low - 120 dpi
medium - 160 dpi
high - 240 dpi
xhigh - 320 dpi

Also, I would have to define everything that uses , in my application, ' dp ' rather than pixels , okey .

Now what?

Different screen sizes , with different densities .

Put yourself in the situation that I want to make a game and I want to start by making a background and sprite.
It would have to do 4 sprites and 4 different funds for different types of densities, ok ? But, who would actually scale ? I mean, to work in any image editor like photoshop.
That dimension should have , for example , the background ?

I'll start with the high density ( 240dpi ) .

I have three devices with different sizes but same density.
The first is of 480x800 , 320x480 second and third 768x1280 .
Well, for example , to make the background of the game , that dimension would have to have ? A be the average of the three ? 784x1280 ?
If this is true, now would have to convert the pixels in pd to have an intermediate dimension depending on the dpi and I can work with , using the formula p = dp * ( dpi/160 ), where 'p' are pixels, 'dp' density-independent pixels, and dpi are dpi

And I would have , rounding , 523dp x 854dp .
This would be my size in pixels with which would make my background in photoshop.

All this is correct ? If I make a real background with dimensions 523x854 pixels , which conventiran in ' dp ' in the android devices, will look good on all those screens whose density is high ?

Please, correct me and help me

Thanks

PD: Sorry for my english, I used translate google
 
 
17th May 2014, 07:23 AM |#2  
mohamedrashad's Avatar
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Quote:
Originally Posted by Pryato

Hi,
About support for multiple screens , I have understood to be based on the dpi , screen density .
As I read there are 4 types of density in android devices, approximately:

low - 120 dpi
medium - 160 dpi
high - 240 dpi
xhigh - 320 dpi

Also, I would have to define everything that uses , in my application, ' dp ' rather than pixels , okey .

Now what?

Different screen sizes , with different densities .

Put yourself in the situation that I want to make a game and I want to start by making a background and sprite.
It would have to do 4 sprites and 4 different funds for different types of densities, ok ? But, who would actually scale ? I mean, to work in any image editor like photoshop.
That dimension should have , for example , the background ?

I'll start with the high density ( 240dpi ) .

I have three devices with different sizes but same density.
The first is of 480x800 , 320x480 second and third 768x1280 .
Well, for example , to make the background of the game , that dimension would have to have ? A be the average of the three ? 784x1280 ?
If this is true, now would have to convert the pixels in pd to have an intermediate dimension depending on the dpi and I can work with , using the formula p = dp * ( dpi/160 ), where 'p' are pixels, 'dp' density-independent pixels, and dpi are dpi

And I would have , rounding , 523dp x 854dp .
This would be my size in pixels with which would make my background in photoshop.

All this is correct ? If I make a real background with dimensions 523x854 pixels , which conventiran in ' dp ' in the android devices, will look good on all those screens whose density is high ?

Please, correct me and help me

Thanks

PD: Sorry for my english, I used translate google





Make 5 folders in res folder

drawable-ldpi
drawable-mdpi
drawable-hdpi
drawable-xhdpi
drawable-xxhdpi

and put every thing on them and andrioid resize them automatically.


also...for best results use "wrap_content"
in layout_width and layout_height
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17th May 2014, 09:15 AM |#3  
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Quote:
Originally Posted by Pryato

Hi,
About support for multiple screens , I have understood to be based on the dpi , screen density .
As I read there are 4 types of density in android devices, approximately:

low - 120 dpi
medium - 160 dpi
high - 240 dpi
xhigh - 320 dpi

Also, I would have to define everything that uses , in my application, ' dp ' rather than pixels , okey .

Now what?

Different screen sizes , with different densities .

Put yourself in the situation that I want to make a game and I want to start by making a background and sprite.
It would have to do 4 sprites and 4 different funds for different types of densities, ok ? But, who would actually scale ? I mean, to work in any image editor like photoshop.
That dimension should have , for example , the background ?

I'll start with the high density ( 240dpi ) .

I have three devices with different sizes but same density.
The first is of 480x800 , 320x480 second and third 768x1280 .
Well, for example , to make the background of the game , that dimension would have to have ? A be the average of the three ? 784x1280 ?
If this is true, now would have to convert the pixels in pd to have an intermediate dimension depending on the dpi and I can work with , using the formula p = dp * ( dpi/160 ), where 'p' are pixels, 'dp' density-independent pixels, and dpi are dpi

And I would have , rounding , 523dp x 854dp .
This would be my size in pixels with which would make my background in photoshop.

All this is correct ? If I make a real background with dimensions 523x854 pixels , which conventiran in ' dp ' in the android devices, will look good on all those screens whose density is high ?

Please, correct me and help me

Thanks

PD: Sorry for my english, I used translate google

Just make one image of xxhdpi dimensions and resize it using Google android asset studio

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17th May 2014, 10:21 AM |#4  
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Quote:
Originally Posted by arpitkh96

Just make one image of xxhdpi dimensions and resize it using Google android asset studio

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No need to resize manually. Android itself resize them

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17th May 2014, 10:38 AM |#5  
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Originally Posted by mohamedrashad

No need to resize manually. Android itself resize them

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Yeah but it would cause more resource consumption

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18th May 2014, 07:21 PM |#6  
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Thanks to all
19th May 2014, 02:49 AM |#7  
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Bitmap decodeStream by multiple screen. Only need one picture
19th May 2014, 04:57 PM |#8  
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You should also include a drawable-xxxhdpi folder. This is only required for 1080p devices with the KitKat launcher, and only the app icon is needed here, it should have a resolution of 192 x 192 pixels.
20th May 2014, 02:25 PM |#9  
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Quote:
Originally Posted by andras_k

You should also include a drawable-xxxhdpi folder. This is only required for 1080p devices with the KitKat launcher, and only the app icon is needed here, it should have a resolution of 192 x 192 pixels.

Thanks, I will do it
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