Yanıtlar:
Configuration.screenLayout
Bit maskesini kullanabilirsiniz .
Misal:
if ((getResources().getConfiguration().screenLayout &
Configuration.SCREENLAYOUT_SIZE_MASK) ==
Configuration.SCREENLAYOUT_SIZE_LARGE) {
// on a large screen device ...
}
Aşağıdaki kod, yukarıdaki cevabı işaretleyerek ekran boyutunu Tost olarak gösterir.
//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();
}
Aşağıdaki bu kod ekran yoğunluğunu Tost olarak gösterir .
//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();
}
Jeff Gilfelt'in statik bir yardımcı yöntem olarak cevabı:
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";
}
}
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";
}
}
Yukarıdaki cevaplar için teşekkürler, bu bana çok yardımcı oldu :-) Ama yine de (benim gibi) Android 1.5'i desteklemeye zorlananlar için geriye doğru uyumlu java yansımasını kullanabiliriz:
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
...
}
Configuration
sınıftaki sabitlere başvurabilirsiniz . Bunlar, derleme zamanında satır içine alınacak statik son değerlerdir (yani, gerçek değerleriyle değiştirileceklerdir), böylece kodunuz platformun eski sürümlerinde bozulmayacaktır.
targetSdkVersion
en son sürüme ayarladı .
Bir Android cihazın ekran yoğunluğunu ve boyutunu kolayca bilmek istiyorsanız, bu ücretsiz uygulamayı kullanabilirsiniz (izin gerekmez): https://market.android.com/details?id=com.jotabout.screeninfo
Xlarge ekranları ve x..high yoğunluklarını kontrol etmeniz mi gerekiyor? Bu, seçilen cevaptan değiştirilen koddur.
//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();
}
İşte Tom McFarlin'in cevabının bir Xamarin.Android sürümü
//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 ();
}
Bu işlevi deneyin isLayoutSizeAtLeast (int screenSize)
Küçük ekranı kontrol etmek için en az 320x426 dp ve üstü getResources (). GetConfiguration (). İsLayoutSizeAtLeast (Configuration.SCREENLAYOUT_SIZE_SMALL);
Normal ekranı kontrol etmek için en az 320x470 dp ve üstü getResources (). GetConfiguration (). İsLayoutSizeAtLeast (Configuration.SCREENLAYOUT_SIZE_NORMAL);
Büyük ekranı kontrol etmek için en az 480x640 dp ve üstü getResources (). GetConfiguration (). İsLayoutSizeAtLeast (Configuration.SCREENLAYOUT_SIZE_LARGE);
Ekstra büyük ekranı kontrol etmek için en az 720x960 dp ve üstü getResources (). GetConfiguration (). İsLayoutSizeAtLeast (Configuration.SCREENLAYOUT_SIZE_XLARGE);
2018'de Jeff'in Kotlin'de cevabına ihtiyacınız varsa, işte burada:
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")
}
}
Bunu bir dize kaynağı ve numaralandırmalar kullanarak yapamaz mıydınız? SMALL, MEDIUM veya LARGE gibi ekran boyutu adına sahip bir dize kaynağı tanımlayabilirsiniz. Sonra numaralandırma örneği oluşturmak için dize kaynağının değerini kullanabilirsiniz.
Değer verdiğiniz farklı ekran boyutları için kodunuzda bir Numaralandırma tanımlayın.
public Enum ScreenSize {
SMALL,
MEDIUM,
LARGE,;
}
Ekran boyutu diyelim, değeri KÜÇÜK, ORTA veya BÜYÜK olacak dize kaynağı tanımlayın.
<string name="screensize">MEDIUM</string>
screensize
her boyutta bir dize kaynağına bir kopyasını ekleyin . <string name="screensize">MEDIUM</string>
değerler-sw600dp / strings.xml ve değerler-orta / strings.xml değerlerine <string name="screensize">LARGE</string>
gider ve sw720dp / strings.xml ve değerler-büyük / strings.xml değerlerine gider.ScreenSize size = ScreenSize.valueOf(getReources().getString(R.string.screensize);
Bu kodu kopyalayıp kendinize yapıştırın Activity
ve yürütüldüğünde Toast
cihazın ekran boyutu kategorisi olacaktır.
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();