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Comment déterminer la catégorie de taille d'écran du périphérique (petite, normale, grande, xlarge) à l'aide du code?

Existe-t-il un moyen de déterminer la catégorie de taille d'écran du périphérique actuel, telle que petit, normal, grand, xlarge?

Pas la densité, mais la taille de l'écran.

androidscreenandroid-screen-support
295
vieux

Vous pouvez utiliser le Configuration.screenLayout bitmask.

Exemple:

if ((getResources().getConfiguration().screenLayout & 
    Configuration.SCREENLAYOUT_SIZE_MASK) == 
        Configuration.SCREENLAYOUT_SIZE_LARGE) {
    // on a large screen device ...

}
416
Jeff Gilfelt

Le code ci-dessous reprend la réponse ci-dessus, affichant le taille de l'écran sous forme de pain grillé.

//Determine screen size
if ((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_LARGE) {
    Toast.makeText(this, "Large screen", Toast.LENGTH_LONG).show();
}
else if ((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_NORMAL) {
    Toast.makeText(this, "Normal sized screen", Toast.LENGTH_LONG).show();
}
else if ((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_SMALL) {
    Toast.makeText(this, "Small sized screen", Toast.LENGTH_LONG).show();
}
else {
    Toast.makeText(this, "Screen size is neither large, normal or small", Toast.LENGTH_LONG).show();
}

Ce code ci-dessous affiche la densité d'écran sous forme de pain grillé.

//Determine density
DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
int density = metrics.densityDpi;

if (density == DisplayMetrics.DENSITY_HIGH) {
    Toast.makeText(this, "DENSITY_HIGH... Density is " + String.valueOf(density), Toast.LENGTH_LONG).show();
}
else if (density == DisplayMetrics.DENSITY_MEDIUM) {
    Toast.makeText(this, "DENSITY_MEDIUM... Density is " + String.valueOf(density), Toast.LENGTH_LONG).show();
}
else if (density == DisplayMetrics.DENSITY_LOW) {
    Toast.makeText(this, "DENSITY_LOW... Density is " + String.valueOf(density), Toast.LENGTH_LONG).show();
}
else {
    Toast.makeText(this, "Density is neither HIGH, MEDIUM OR LOW.  Density is " + String.valueOf(density), Toast.LENGTH_LONG).show();
}
148
Mel

Jeff Gilfelt answer en tant que méthode d'assistance statique:

private static String getSizeName(Context context) {
    int screenLayout = context.getResources().getConfiguration().screenLayout;
    screenLayout &= Configuration.SCREENLAYOUT_SIZE_MASK;

    switch (screenLayout) {
    case Configuration.SCREENLAYOUT_SIZE_SMALL:
        return "small";
    case Configuration.SCREENLAYOUT_SIZE_NORMAL:
        return "normal";
    case Configuration.SCREENLAYOUT_SIZE_LARGE:
        return "large";
    case 4: // Configuration.SCREENLAYOUT_SIZE_XLARGE is API >= 9
        return "xlarge";
    default:
        return "undefined";
    }
}
67
qwertzguy

Merci pour les réponses ci-dessus, cela m'a beaucoup aidé :-) Mais pour ceux (comme moi) contraints de toujours supporter Android 1.5, nous pouvons utiliser la réflexion Java pour les versions antérieures compatibles:

Configuration conf = getResources().getConfiguration();
int screenLayout = 1; // application default behavior
try {
    Field field = conf.getClass().getDeclaredField("screenLayout");
    screenLayout = field.getInt(conf);
} catch (Exception e) {
    // NoSuchFieldException or related stuff
}
// Configuration.SCREENLAYOUT_SIZE_MASK == 15
int screenType = screenLayout & 15;
// Configuration.SCREENLAYOUT_SIZE_SMALL == 1
// Configuration.SCREENLAYOUT_SIZE_NORMAL == 2
// Configuration.SCREENLAYOUT_SIZE_LARGE == 3
// Configuration.SCREENLAYOUT_SIZE_XLARGE == 4
if (screenType == 1) {
    ...
} else if (screenType == 2) {
    ...
} else if (screenType == 3) {
    ...
} else if (screenType == 4) {
    ...
} else { // undefined
    ...
}
11
A. Masson
private String getDeviceDensity() {
    int density = mContext.getResources().getDisplayMetrics().densityDpi;
    switch (density)
    {
        case DisplayMetrics.DENSITY_MEDIUM:
            return "MDPI";
        case DisplayMetrics.DENSITY_HIGH:
            return "HDPI";
        case DisplayMetrics.DENSITY_LOW:
            return "LDPI";
        case DisplayMetrics.DENSITY_XHIGH:
            return "XHDPI";
        case DisplayMetrics.DENSITY_TV:
            return "TV";
        case DisplayMetrics.DENSITY_XXHIGH:
            return "XXHDPI";
        case DisplayMetrics.DENSITY_XXXHIGH:
            return "XXXHDPI";
        default:
            return "Unknown";
    }
}
11
Pawan Maheshwari

Si vous souhaitez connaître facilement la densité et la taille de l'écran d'un appareil Android, vous pouvez utiliser cette application gratuite (aucune autorisation requise): https://market.Android.com/details?id=com.jotabout .screeninfo

9
mmathieum

Besoin de vérifier pour les grands écrans et les densités x..high? C'est le code modifié de la réponse choisie.

//Determine screen size
if ((getResources().getConfiguration().screenLayout &      Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_LARGE) {     
    Toast.makeText(this, "Large screen",Toast.LENGTH_LONG).show();
} else if ((getResources().getConfiguration().screenLayout &      Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_NORMAL) {     
    Toast.makeText(this, "Normal sized screen" , Toast.LENGTH_LONG).show();
} else if ((getResources().getConfiguration().screenLayout &      Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_SMALL) {     
    Toast.makeText(this, "Small sized screen" , Toast.LENGTH_LONG).show();
} else if ((getResources().getConfiguration().screenLayout &      Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_XLARGE) {     
    Toast.makeText(this, "XLarge sized screen" , Toast.LENGTH_LONG).show();
} else {
    Toast.makeText(this, "Screen size is neither large, normal or small" , Toast.LENGTH_LONG).show();
}

//Determine density
DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
int density = metrics.densityDpi;

if (density==DisplayMetrics.DENSITY_HIGH) {
    Toast.makeText(this, "DENSITY_HIGH... Density is " + String.valueOf(density),  Toast.LENGTH_LONG).show();
} else if (density==DisplayMetrics.DENSITY_MEDIUM) {
    Toast.makeText(this, "DENSITY_MEDIUM... Density is " + String.valueOf(density),  Toast.LENGTH_LONG).show();
} else if (density==DisplayMetrics.DENSITY_LOW) {
    Toast.makeText(this, "DENSITY_LOW... Density is " + String.valueOf(density),  Toast.LENGTH_LONG).show();
} else if (density==DisplayMetrics.DENSITY_XHIGH) {
    Toast.makeText(this, "DENSITY_XHIGH... Density is " + String.valueOf(density),  Toast.LENGTH_LONG).show();
} else if (density==DisplayMetrics.DENSITY_XXHIGH) {
    Toast.makeText(this, "DENSITY_XXHIGH... Density is " + String.valueOf(density),  Toast.LENGTH_LONG).show();
} else if (density==DisplayMetrics.DENSITY_XXXHIGH) {
    Toast.makeText(this, "DENSITY_XXXHIGH... Density is " + String.valueOf(density),  Toast.LENGTH_LONG).show();
} else {
    Toast.makeText(this, "Density is neither HIGH, MEDIUM OR LOW.  Density is " + String.valueOf(density),  Toast.LENGTH_LONG).show();
}
5
Tom McFarlin

Voici une version Xamarin.Android de La réponse de Tom McFarlin 

        //Determine screen size
        if ((Application.Context.Resources.Configuration.ScreenLayout & ScreenLayout.SizeMask) == ScreenLayout.SizeLarge) {
            Toast.MakeText (this, "Large screen", ToastLength.Short).Show ();
        } else if ((Application.Context.Resources.Configuration.ScreenLayout & ScreenLayout.SizeMask) == ScreenLayout.SizeNormal) {
            Toast.MakeText (this, "Normal screen", ToastLength.Short).Show ();
        } else if ((Application.Context.Resources.Configuration.ScreenLayout & ScreenLayout.SizeMask) == ScreenLayout.SizeSmall) {
            Toast.MakeText (this, "Small screen", ToastLength.Short).Show ();
        } else if ((Application.Context.Resources.Configuration.ScreenLayout & ScreenLayout.SizeMask) == ScreenLayout.SizeXlarge) {
            Toast.MakeText (this, "XLarge screen", ToastLength.Short).Show ();
        } else {
            Toast.MakeText (this, "Screen size is neither large, normal or small", ToastLength.Short).Show ();
        }
        //Determine density
        DisplayMetrics metrics = new DisplayMetrics();
        WindowManager.DefaultDisplay.GetMetrics (metrics);
        var density = metrics.DensityDpi;
        if (density == DisplayMetricsDensity.High) {
            Toast.MakeText (this, "DENSITY_HIGH... Density is " + density, ToastLength.Long).Show ();
        } else if (density == DisplayMetricsDensity.Medium) {
            Toast.MakeText (this, "DENSITY_MEDIUM... Density is " + density, ToastLength.Long).Show ();
        } else if (density == DisplayMetricsDensity.Low) {
            Toast.MakeText (this, "DENSITY_LOW... Density is " + density, ToastLength.Long).Show ();
        } else if (density == DisplayMetricsDensity.Xhigh) {
            Toast.MakeText (this, "DENSITY_XHIGH... Density is " + density, ToastLength.Long).Show ();
        } else if (density == DisplayMetricsDensity.Xxhigh) {
            Toast.MakeText (this, "DENSITY_XXHIGH... Density is " + density, ToastLength.Long).Show ();
        } else if (density == DisplayMetricsDensity.Xxxhigh) {
            Toast.MakeText (this, "DENSITY_XXXHIGH... Density is " + density, ToastLength.Long).Show ();
        } else {
            Toast.MakeText (this, "Density is neither HIGH, MEDIUM OR LOW.  Density is " + density, ToastLength.Long).Show ();
        }
3
ellechino

Copiez et collez ce code dans votre Activity et lorsqu'il sera exécuté, il variera Toast dans la catégorie de taille d'écran du périphérique.

int screenSize = getResources().getConfiguration().screenLayout &
        Configuration.SCREENLAYOUT_SIZE_MASK;

String toastMsg;
switch(screenSize) {
    case Configuration.SCREENLAYOUT_SIZE_LARGE:
        toastMsg = "Large screen";
        break;
    case Configuration.SCREENLAYOUT_SIZE_NORMAL:
        toastMsg = "Normal screen";
        break;
    case Configuration.SCREENLAYOUT_SIZE_SMALL:
        toastMsg = "Small screen";
        break;
    default:
        toastMsg = "Screen size is neither large, normal or small";
}
Toast.makeText(this, toastMsg, Toast.LENGTH_LONG).show();
1
Alireza Ghanbarinia

En 2018, si vous avez besoin de la réponse de Jeff à Kotlin, la voici:

  private fun determineScreenSize(): String {
    // Thanks to https://stackoverflow.com/a/5016350/2563009.
    val screenLayout = resources.configuration.screenLayout
    return when {
      screenLayout and Configuration.SCREENLAYOUT_SIZE_MASK == Configuration.SCREENLAYOUT_SIZE_SMALL -> "Small"
      screenLayout and Configuration.SCREENLAYOUT_SIZE_MASK == Configuration.SCREENLAYOUT_SIZE_NORMAL -> "Normal"
      screenLayout and Configuration.SCREENLAYOUT_SIZE_MASK == Configuration.SCREENLAYOUT_SIZE_LARGE -> "Large"
      screenLayout and Configuration.SCREENLAYOUT_SIZE_MASK == Configuration.SCREENLAYOUT_SIZE_XLARGE -> "Xlarge"
      screenLayout and Configuration.SCREENLAYOUT_SIZE_MASK == Configuration.SCREENLAYOUT_SIZE_UNDEFINED -> "Undefined"
      else -> error("Unknown screenLayout: $screenLayout")
    }
  }
1
Thuy Trinh

Ne pourriez-vous pas faire cela en utilisant une ressource chaîne et des énumérations? Vous pouvez définir une ressource chaîne portant le nom de la taille de l'écran, telle que SMALL, MEDIUM ou LARGE. Vous pouvez ensuite utiliser la valeur de la ressource chaîne pour créer une instance de l'énum.

  1. Définissez un Enum dans votre code pour les différentes tailles d'écran qui vous intéressent.

    public Enum ScreenSize {
    SMALL,
    MEDIUM,
    LARGE,;
}

  2. Définissez une ressource de chaîne, par exemple, screensize, dont la valeur sera SMALL, MEDIUM ou LARGE.

    <string name="screensize">MEDIUM</string>
  3. Placez une copie de screensize dans une ressource chaîne dans chaque dimension qui vous tient à cœur.
    Par exemple, <string name="screensize">MEDIUM</string> irait dans values-sw600dp/strings.xml et values-medium/strings.xml et <string name="screensize">LARGE</string> irait dans sw720dp/strings.xml et values-large/strings.xml.
  4. Dans le code, écrivez
    ScreenSize size = ScreenSize.valueOf(getReources().getString(R.string.screensize);
1
Prof Mo

Essayez cette fonctionisLayoutSizeAtLeast (int screenSize)

Pour vérifier le petit écran, au moins 320x426 dp et plus GetResources (). GetConfiguration (). IsLayoutSizeAtLeast (Configuration.SCREENLAYOUT_SIZE_SMALL);

Pour vérifier l'écran normal, au moins 320x470 dp et plus GetResources (). GetConfiguration (). IsLayoutSizeAtLeast (Configuration.SCREENLAYOUT_SIZE_NORMAL);

Pour vérifier le grand écran, au moins 480x640 dp et plus GetResources (). GetConfiguration (). IsLayoutSizeAtLeast (Configuration.SCREENLAYOUT_SIZE_LARGE);

Pour vérifier un très grand écran, au moins 720x960 dp et plus GetResources (). GetConfiguration (). IsLayoutSizeAtLeast (Configuration.SCREENLAYOUT_SIZE_XLARGE);

0
Devendra Vaja