是否有办法确定当前设备的屏幕大小的类别,如小,正常,大,xlarge?
不是密度,而是屏幕尺寸。
是否有办法确定当前设备的屏幕大小的类别,如小,正常,大,xlarge?
不是密度,而是屏幕尺寸。
当前回答
这是沙玛林。Tom McFarlin回答的Android版本
//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 ();
}
其他回答
这是沙玛林。Tom McFarlin回答的Android版本
//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 ();
}
感谢上面的回答,这对我帮助很大:-)但对于那些(像我一样)被迫仍然支持Android 1.5的人,我们可以使用java反射来向后兼容:
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
...
}
试试这个函数isLayoutSizeAtLeast(int screenSize)
检查小屏幕,至少320x426 dp及以上 .getConfiguration getresource () () .isLayoutSizeAtLeast (Configuration.SCREENLAYOUT_SIZE_SMALL);
检查正常屏幕,至少320x470 dp及以上 .getConfiguration getresource () () .isLayoutSizeAtLeast (Configuration.SCREENLAYOUT_SIZE_NORMAL);
检查大屏幕,至少480x640 dp及以上 .getConfiguration getresource () () .isLayoutSizeAtLeast (Configuration.SCREENLAYOUT_SIZE_LARGE);
检查超大屏幕,至少720x960 dp及以上 .getConfiguration getresource () () .isLayoutSizeAtLeast (Configuration.SCREENLAYOUT_SIZE_XLARGE);
下面的代码充实了上面的答案,将屏幕大小显示为Toast。
//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();
}
下面的代码将屏幕密度显示为Toast。
//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对静态助手方法的回答是:
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";
}
}