I am creating an Application which will run on all Android Devices. I want to create xhdpi Graphics for My App. My App is full screen. I am confused in Creating graphics. can any one tell me the best sizes of my background image in pixels.
- xhdpi: 720×1280 px
- hdpi: 480×800 px
- mdpi: 320×480 px
- ldpi: 240×320 px
Suggest me the best sizes which will appear on all devices good. Because my graphics are the core of my app.
I want that every device get the best image which it want. Android will be not involved in compressing or expanding of image.
The following are the best dimensions for the app to run in all devices. For understanding multiple supporting screens you have to read
xxxhdpi: 1280x1920 px xxhdpi: 960x1600 px xhdpi: 640x960 px hdpi: 480x800 px mdpi: 320x480 px ldpi: 240x320 px
Android Devices Matrices
ldpi mdpi hdpi xhdpi xxhdpi xxxhdpi Launcher And Home 36*36 48*48 72*72 96*96 144*144 192*192 Toolbar And Tab 24*24 32*32 48*48 64*64 96*96 128*128 Notification 18*18 24*24 36*36 48*48 72*72 96*96 Background 240*320 320*480 480*800 768*1280 1080 *1920 1440*2560
(For good approach minus Toolbar Size From total height of Background Screen and then Design Graphics of Screens )
For More Help (This link includes tablets also):
I looked around the internet for correct dimensions for these densities for square images, but couldn’t find anything reliable.
If it’s any consolation, referring to Veerababu Medisetti’s answer I used these dimensions for SQUARES 🙂
xxxhdpi: 1280x1280 px xxhdpi: 960x960 px xhdpi: 640x640 px hdpi: 480x480 px mdpi: 320x320 px ldpi: 240x240 px
GIMP tool is exactly what you need to create the images for different pixel resolution devices.
Follow these steps:
- Open the existing image in GIMP tool.
- Go to “Image” menu, and select “Scale Image…”
Use below pixel dimension that you need:
xxxhdpi: 1280×1920 px
xxhdpi: 960×1600 px
xhdpi: 640×960 px
hdpi: 480×800 px
mdpi: 320×480 px
ldpi: 240×320 px
Then “Export” the image from “File” menu.
My understanding is that if you use a
View object (as supposed to eg.
android:windowBackground) Android will automatically scale your image to the correct size. The problem is that too much scaling can result in artifacts (both during up and down scaling) and blurring. Due to various resolutions and aspects ratios on the market, it’s impossible to create “perfect” fits for every screen, but you can do your best to make sure only a little bit of scaling has to be done, and thus mitigate the unwanted side effects. So what I would do is:
- Keep to the 3:4:6:8:12:16 scaling ratio between the six generalized densities (ldpi, mdpi, hdpi, etc).
- You should not include xxxhdpi elements for your UI elements, this resolution is meant for upscaling launcher icons only (so mipmap folder only) … You should not use the xxxhdpi qualifier for UI elements other than the launcher icon. … although eg. on the Samsung edge 7 calling
getDisplayMetrics().densityreturns 4 (xxxhdpi), so perhaps this info is outdated.
Then look at the new phone models on the market, and find the representative ones. Assumming the new google pixel is a good representation of an android phone: It has a 1080 x 1920 resolution at 441 dpi, and a screen size of 4.4 x 2.5 inches. Then from the the android developer docs:
- ldpi (low) ~120dpi
- mdpi (medium) ~160dpi
- hdpi (high) ~240dpi
- xhdpi (extra-high) ~320dpi
- xxhdpi (extra-extra-high) ~480dpi
- xxxhdpi (extra-extra-extra-high) ~640dpi
This corresponds to an
xxhdpiscreen. From here I could scale these 1080 x 1920 down by the (3:4:6:8:12) ratios above.
- I could also acknowledge that downsampling is generally an easy way to scale and thus I might want slightly oversized bitmaps bundled in my apk (Note: higher memory consumption). Once more assuming that the width and height of the pixel screen is represetative, I would scale up the 1080×1920 by a factor of 480/441, leaving my maximum resolution background image at approx. 1200×2100, which should then be scaled by the 3:4:6:8:12.
- Remember, you only need to provide density-specific drawables for bitmap files (.png, .jpg, or .gif) and Nine-Patch files (.9.png). If you use XML files to define drawable resources (eg. shapes), just put one copy in the default drawable directory.
- If you ever have to accomodate really large or odd aspect ratios, create specific folders for these as well, using the flags for this, eg.
- And no need to draw the background twice. Therefore set a style with