getting the screen density programmatically in android

Question

How to get the screen density programmatically in android    I mean  How to find the screen dpi of the current device

User · Answer

Another way to get the density loaded by the device:

Create values folders for each density

values (default mdpi)
values-hdpi
values-xhdpi
values-xxhdpi
values-xxxhdpi

Add a string resource in their respective strings.xml:

<string name="screen_density">MDPI</string>    <!-- ..\res\values\strings.xml -->
<string name="screen_density">HDPI</string>    <!-- ..\res\values-hdpi\strings.xml -->
<string name="screen_density">XHDPI</string>   <!-- ..\res\values-xhdpi\strings.xml -->
<string name="screen_density">XXHDPI</string>  <!-- ..\res\values-xxhdpi\strings.xml -->
<string name="screen_density">XXXHDPI</string> <!-- ..\res\values-xxxhdpi\strings.xml -->

Then simply get the string resource, and you have your density:

String screenDensity = getResources().getString(R.string.screen_density);

If the density is larger than XXXHDPI, it will default to XXXHDPI or if it is lower than HDPI it will default to MDPI

I left out LDPI, because for my use case it isn't necessary.

User · Answer

You Should Try This  Just Added a Method which will find and Show the Toast  That in Which Category the Device Falls   public static int differentDensityAndScreenSize Context context      int value   20    String str         if   context getResources   getConfiguration   screenLayout  amp  Configuration SCREENLAYOUT SIZE MASK     Configuration SCREENLAYOUT SIZE SMALL       switch  context getResources   getDisplayMetrics   densityDpi       case DisplayMetrics DENSITY LOW      str    small-ldpi       value   20      break     case DisplayMetrics DENSITY MEDIUM      str    small-mdpi       value   20      break     case DisplayMetrics DENSITY HIGH      str    small-hdpi       value   20      break     case DisplayMetrics DENSITY XHIGH      str    small-xhdpi       value   20      break     case DisplayMetrics DENSITY XXHIGH      str    small-xxhdpi       value   20      break     case DisplayMetrics DENSITY XXXHIGH      str    small-xxxhdpi       value   20      break     case DisplayMetrics DENSITY TV      str    small-tvdpi       value   20      break     default      str    small-unknown       value   20      break            else if   context getResources   getConfiguration   screenLayout  amp  Configuration SCREENLAYOUT SIZE MASK     Configuration SCREENLAYOUT SIZE NORMAL       switch  context getResources   getDisplayMetrics   densityDpi       case DisplayMetrics DENSITY LOW      str    normal-ldpi       value   82      break     case DisplayMetrics DENSITY MEDIUM      str    normal-mdpi       value   82      break     case DisplayMetrics DENSITY HIGH      str    normal-hdpi       value   82      break     case DisplayMetrics DENSITY XHIGH      str    normal-xhdpi       value   90      break     case DisplayMetrics DENSITY XXHIGH      str    normal-xxhdpi       value   96      break     case DisplayMetrics DENSITY XXXHIGH      str    normal-xxxhdpi       value   96      break     case DisplayMetrics DENSITY TV      str    normal-tvdpi       value   96      break     default      str    normal-unknown       value   82      break           else if   context getResources   getConfiguration   screenLayout  amp  Configuration SCREENLAYOUT SIZE MASK     Configuration SCREENLAYOUT SIZE LARGE       switch  context getResources   getDisplayMetrics   densityDpi       case DisplayMetrics DENSITY LOW      str    large-ldpi       value   78      break     case DisplayMetrics DENSITY MEDIUM      str    large-mdpi       value   78      break     case DisplayMetrics DENSITY HIGH      str    large-hdpi       value   78      break     case DisplayMetrics DENSITY XHIGH      str    large-xhdpi       value   125      break     case DisplayMetrics DENSITY XXHIGH      str    large-xxhdpi       value   125      break     case DisplayMetrics DENSITY XXXHIGH      str    large-xxxhdpi       value   125      break     case DisplayMetrics DENSITY TV      str    large-tvdpi       value   125      break     default      str    large-unknown       value   78      break            else if   context getResources   getConfiguration   screenLayout  amp  Configuration SCREENLAYOUT SIZE MASK     Configuration SCREENLAYOUT SIZE XLARGE       switch  context getResources   getDisplayMetrics   densityDpi       case DisplayMetrics DENSITY LOW      str    xlarge-ldpi       value   125      break     case DisplayMetrics DENSITY MEDIUM      str    xlarge-mdpi       value   125      break     case DisplayMetrics DENSITY HIGH      str    xlarge-hdpi       value   125      break     case DisplayMetrics DENSITY XHIGH      str    xlarge-xhdpi       value   125      break     case DisplayMetrics DENSITY XXHIGH      str    xlarge-xxhdpi       value   125      break     case DisplayMetrics DENSITY XXXHIGH      str    xlarge-xxxhdpi       value   125      break     case DisplayMetrics DENSITY TV      str    xlarge-tvdpi       value   125      break     default      str    xlarge-unknown       value   125      break              The Toast will show the Device falls in Which Categories  Toast makeText MainActivity this     str  Toast LENGTH SHORT  show       return value       http   www androidwarriors com 2016 01 how-to-find-different-devices-screen html

User · Answer

Blundell s answer as a static helper method   private static String getDensityName Context context        float density   context getResources   getDisplayMetrics   density      if  density  gt   4 0            return  xxxhdpi             if  density  gt   3 0            return  xxhdpi             if  density  gt   2 0            return  xhdpi             if  density  gt   1 5            return  hdpi             if  density  gt   1 0            return  mdpi             return  ldpi

User · Answer

Yet another answer          return  ldpi    mdpi    hdpi    xhdpi    xhdpi    xxhdpi    xxxhdpi    tvdpi   or  unknown      public static String getDensityBucket Resources resources        switch  resources getDisplayMetrics   densityDpi            case DisplayMetrics DENSITY LOW              return  ldpi           case DisplayMetrics DENSITY MEDIUM              return  mdpi           case DisplayMetrics DENSITY HIGH              return  hdpi           case DisplayMetrics DENSITY XHIGH              return  xhdpi           case DisplayMetrics DENSITY XXHIGH              return  xxhdpi           case DisplayMetrics DENSITY XXXHIGH              return  xxxhdpi           case DisplayMetrics DENSITY TV              return  tvdpi           default              return  unknown

User · Answer

public static String getDensity Context context        String r      DisplayMetrics metrics   new DisplayMetrics         if    context instanceof Activity             r    hdpi         else           Activity activity    Activity  context          activity getWindowManager   getDefaultDisplay   getMetrics metrics            if  metrics densityDpi  lt   DisplayMetrics DENSITY LOW                r    ldpi             else if  metrics densityDpi  lt   DisplayMetrics DENSITY MEDIUM                r    mdpi             else               r    hdpi                        return r

User · Answer

To get dpi   DisplayMetrics dm   new DisplayMetrics    getWindowManager   getDefaultDisplay   getMetrics dm       will either be DENSITY LOW  DENSITY MEDIUM or DENSITY HIGH int dpiClassification   dm densityDpi      these will return the actual dpi horizontally and vertically float xDpi   dm xdpi  float yDpi   dm ydpi

User · Answer

Try this   DisplayMetrics dm   context getResources   getDisplayMetrics    int densityDpi   dm densityDpi

User · Answer

DisplayMetrics metrics   new DisplayMetrics    getWindowManager   getDefaultDisplay   getMetrics metrics    switch metrics densityDpi         case DisplayMetrics DENSITY LOW           break        case DisplayMetrics DENSITY MEDIUM           break        case DisplayMetrics DENSITY HIGH           break      This will work on API level 4 and higher

User · Answer

You can get info on the display from the DisplayMetrics struct   DisplayMetrics metrics   getResources   getDisplayMetrics      Though Android doesn t use a direct pixel mapping  it uses a handful of quantized Density Independent Pixel values then scales to the actual screen size  So the metrics densityDpi property will be one of the DENSITY xxx constants  120  160  213  240  320  480 or 640 dpi    If you need the actual lcd pixel density  perhaps for an OpenGL app  you can get it from the metrics xdpi and metrics ydpi properties for horizontal and vertical density respectively   If you are targeting API Levels earlier than 4  The metrics density property is a floating point scaling factor from the reference density  160dpi   The same value now provided by metrics densityDpi can be calculated  int densityDpi    int  metrics density   160f

User · Answer

This should work   DisplayMetrics dm   new DisplayMetrics    getWindowManager   getDefaultDisplay   getMetrics dm   int width   dm widthPixels    320 int height   dm heightPixels    480

User · Answer

The following answer is a small improvement based upon qwertzguy s answer    double density   getResources   getDisplayMetrics   density  if  density  gt   4 0          xxxhdpi     else if  density  gt   3 0  amp  amp  density  lt  4 0         xxhdpi   else if  density  gt   2 0         xhdpi   else if  density  gt   1 5  amp  amp  density  lt  2 0         hdpi   else if  density  gt   1 0  amp  amp  density  lt  1 5         mdpi

User · Answer

In Android you can get the screen density like this   public static String getScreenDensity Context context        String density      switch  context getResources   getDisplayMetrics   densityDpi                case DisplayMetrics DENSITY LOW              density    LDPI               break          case DisplayMetrics DENSITY 140              density    LDPI - MDPI               break          case DisplayMetrics DENSITY MEDIUM              density    MDPI               break          case DisplayMetrics DENSITY 180          case DisplayMetrics DENSITY 200          case DisplayMetrics DENSITY 220              density    MDPI - HDPI               break          case DisplayMetrics DENSITY HIGH              density    HDPI               break          case DisplayMetrics DENSITY 260          case DisplayMetrics DENSITY 280          case DisplayMetrics DENSITY 300              density    HDPI - XHDPI               break          case DisplayMetrics DENSITY XHIGH              density    XHDPI               break          case DisplayMetrics DENSITY 340          case DisplayMetrics DENSITY 360          case DisplayMetrics DENSITY 400          case DisplayMetrics DENSITY 420          case DisplayMetrics DENSITY 440              density    XHDPI - XXHDPI               break          case DisplayMetrics DENSITY XXHIGH              density    XXHDPI               break          case DisplayMetrics DENSITY 560          case DisplayMetrics DENSITY 600              density    XXHDPI - XXXHDPI               break          case DisplayMetrics DENSITY XXXHIGH              density    XXXHDPI               break          case DisplayMetrics DENSITY TV              density    TVDPI               break          default              density    UNKNOWN               break             return density      And in Kotlin like this   fun getScreenDensity context  Context   String       val density  String     when  context resources displayMetrics densityDpi            DisplayMetrics DENSITY LOW - gt  density    LDPI          DisplayMetrics DENSITY 140 - gt  density    LDPI - MDPI          DisplayMetrics DENSITY MEDIUM - gt  density    MDPI          DisplayMetrics DENSITY 180  DisplayMetrics DENSITY 200  DisplayMetrics DENSITY 220 - gt  density    MDPI - HDPI          DisplayMetrics DENSITY HIGH - gt  density    HDPI          DisplayMetrics DENSITY 260  DisplayMetrics DENSITY 280  DisplayMetrics DENSITY 300 - gt  density    HDPI - XHDPI          DisplayMetrics DENSITY XHIGH - gt  density    XHDPI          DisplayMetrics DENSITY 340  DisplayMetrics DENSITY 360  DisplayMetrics DENSITY 400  DisplayMetrics DENSITY 420  DisplayMetrics DENSITY 440 - gt  density                XHDPI - XXHDPI          DisplayMetrics DENSITY XXHIGH - gt  density    XXHDPI          DisplayMetrics DENSITY 560  DisplayMetrics DENSITY 600 - gt  density    XXHDPI - XXXHDPI          DisplayMetrics DENSITY XXXHIGH - gt  density    XXXHDPI          DisplayMetrics DENSITY TV - gt  density    TVDPI          else - gt  density    UNKNOWN             return density     Make sure to regularly check if new densities are added

User · Answer

Try this      In kotlin  fun determineScreenDensityCode    String         return when  resources displayMetrics densityDpi             DisplayMetrics DENSITY LOW - gt   ldpi           DisplayMetrics DENSITY MEDIUM - gt   mdpi           DisplayMetrics DENSITY HIGH - gt   hdpi           DisplayMetrics DENSITY XHIGH  DisplayMetrics DENSITY 280 - gt   xhdpi           DisplayMetrics DENSITY XXHIGH  DisplayMetrics DENSITY 360  DisplayMetrics DENSITY 400  DisplayMetrics DENSITY 420 - gt   xxhdpi           DisplayMetrics DENSITY XXXHIGH  DisplayMetrics DENSITY 560 - gt   xxxhdpi           else - gt   Unknown code   resources displayMetrics densityDpi              You can call by println  density    determineScreenDensityCode      and the output will be System out  density  xxxhdpi

User · Answer

If you want to retrieve the density from a Service it works like this   WindowManager wm    WindowManager  this getSystemService Context WINDOW SERVICE   DisplayMetrics metrics   new DisplayMetrics    wm getDefaultDisplay   getMetrics metrics

User · Answer

Actualy if you want to have the real display dpi the answer is somewhere in between if you query for display metrics   DisplayMetrics dm   new DisplayMetrics    getWindowManager   getDefaultDisplay   getMetrics dm   int dpiClassification   dm densityDpi  float xDpi   dm xdpi  float yDpi   dm ydpi    densityDpi   160 will give you the values suggestion which density you should use  0 75 - ldpi - 120 dpi 1 0 - mdpi - 160 dpi 1 5 - hdpi - 240 dpi 2 0 - xhdpi - 320 dpi 3 0 - xxhdpi - 480 dpi 4 0 - xxxhdpi - 640 dpi   as specified in previous posts  but dm xdpi won t give you always the REAL dpi of given display  Example   Device  Sony ericsson xperia mini pro  SK17i  Density  1 0  e g  suggests you use 160dpi resources  xdpi  193 5238 Real device ppi is arround 193ppi   Device  samsung GT-I8160  Samsung ace 2  Density 1 5  e g  suggests you use 240dpi resources  xdpi 160 42105 Real device ppi is arround 246ppi   so maybe real dpi of the display should be Density xdpi    but i m not sure if this is the correct way to do

User · Answer

This also works    getResources   getDisplayMetrics   density    This will give you   0 75 - ldpi  1 0 - mdpi  1 5 - hdpi  2 0 - xhdpi  3 0 - xxhdpi  4 0 - xxxhdpi    ref  density    ref 2

User · Answer

This should help on your activity      void printSecreenInfo         Display display   getWindowManager   getDefaultDisplay        DisplayMetrics metrics   new DisplayMetrics        display getMetrics metrics        Log i TAG   density       metrics density           density interms of dpi     Log i TAG   D density       metrics densityDpi           horizontal pixel resolution     Log i TAG   width pix       metrics widthPixels            actual horizontal dpi     Log i TAG   xdpi       metrics xdpi           actual vertical dpi     Log i TAG   ydpi       metrics ydpi        OUTPUT     I test  1044   density  1 0  I test  1044   D density  160  I test  1044   width pix  800  I test  1044   xdpi  160 0  I test  1044   ydpi  160 42105

User · Answer

Here are some density constants  source   There are  in addition to the standard densities  5 Intermediate ones  Taking into account this fact  the following code will be a complete working example  float density   getResources   getDisplayMetrics   density   if  density    0 75f           LDPI   else if  density  gt   1 0f  amp  amp  density  lt  1 5f           MDPI   else if  density    1 5f           HDPI   else if  density  gt  1 5f  amp  amp  density  lt   2 0f           XHDPI   else if  density  gt  2 0f  amp  amp  density  lt   3 0f           XXHDPI   else          XXXHDPI     Alternatively  you can find density constants using the densityDpi  int densityDpi   getResources   getDisplayMetrics   densityDpi   switch  densityDpi        case DisplayMetrics DENSITY LOW             LDPI         break       case DisplayMetrics DENSITY MEDIUM             MDPI         break       case DisplayMetrics DENSITY TV      case DisplayMetrics DENSITY HIGH             HDPI         break       case DisplayMetrics DENSITY XHIGH      case DisplayMetrics DENSITY 280             XHDPI         break       case DisplayMetrics DENSITY XXHIGH      case DisplayMetrics DENSITY 360      case DisplayMetrics DENSITY 400      case DisplayMetrics DENSITY 420             XXHDPI         break       case DisplayMetrics DENSITY XXXHIGH      case DisplayMetrics DENSITY 560             XXXHDPI         break

User · Answer

I am using following code to access DPI from modules  no need for having access to a context object     Resources getSystem   getDisplayMetrics   xdpi Resources getSystem   getDisplayMetrics   ydpi  2

[android] getting the screen density programmatically in android?

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