Android将屏幕尺寸定义为Normal Large XLarge等。
它会自动选择适当文件夹中的静态资源。我需要有关我的java代码中当前设备的数据。 DisplayMetrics仅提供有关当前设备密度的信息。没有关于屏幕尺寸的信息。
我确实在grep代码here中找到了ScreenSize枚举 但是，对于4.0 SDK，我似乎无法使用此功能。有没有办法获取这些信息？
答案 0 :(得分：111)
将此代码复制并粘贴到Activity中，一旦执行，它将Toast设备的屏幕尺寸类别。
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();
答案 1 :(得分：47)
private static String getScreenResolution(Context context)
{
WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Display display = wm.getDefaultDisplay();
DisplayMetrics metrics = new DisplayMetrics();
display.getMetrics(metrics);
int width = metrics.widthPixels;
int height = metrics.heightPixels;
return "{" + width + "," + height + "}";
}
答案 2 :(得分：12)
确定屏幕尺寸：
int screenSize = getResources().getConfiguration().screenLayout &Configuration.SCREENLAYOUT_SIZE_MASK;
switch(screenSize) {
case Configuration.SCREENLAYOUT_SIZE_LARGE:
Toast.makeText(this, "Large screen",Toast.LENGTH_LONG).show();
break;
case Configuration.SCREENLAYOUT_SIZE_NORMAL:
Toast.makeText(this, "Normal screen",Toast.LENGTH_LONG).show();
break;
case Configuration.SCREENLAYOUT_SIZE_SMALL:
Toast.makeText(this, "Small screen",Toast.LENGTH_LONG).show();
break;
default:
Toast.makeText(this, "Screen size is neither large, normal or small" , Toast.LENGTH_LONG).show();
}
确定密度：
int density= getResources().getDisplayMetrics().densityDpi;
switch(density)
{
case DisplayMetrics.DENSITY_LOW:
Toast.makeText(context, "LDPI", Toast.LENGTH_SHORT).show();
break;
case DisplayMetrics.DENSITY_MEDIUM:
Toast.makeText(context, "MDPI", Toast.LENGTH_SHORT).show();
break;
case DisplayMetrics.DENSITY_HIGH:
Toast.makeText(context, "HDPI", Toast.LENGTH_SHORT).show();
break;
case DisplayMetrics.DENSITY_XHIGH:
Toast.makeText(context, "XHDPI", Toast.LENGTH_SHORT).show();
break;
}
表示参考： http://devl-android.blogspot.in/2013/10/wifi-connectivity-and-hotspot-in-android.html
答案 3 :(得分：3)
您可以使用此代码获取以像素为单位的显示尺寸。
Display display = getWindowManager().getDefaultDisplay();
SizeUtils.SCREEN_WIDTH = display.getWidth();
SizeUtils.SCREEN_HEIGHT = display.getHeight();
答案 4 :(得分：2)
DisplayMetrics displaymetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
int ht = displaymetrics.heightPixels;
int wt = displaymetrics.widthPixels;
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();
}
// 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();
}
// These are deprecated
Display display = ((WindowManager) getSystemService(Context.WINDOW_SERVICE))
.getDefaultDisplay();
int width = display.getWidth();
int height = display.getHeight();
答案 5 :(得分：2)
我认为这是一段非常直接的简单代码！
public Map<String, Integer> deriveMetrics(Activity activity) {
try {
DisplayMetrics metrics = new DisplayMetrics();
if (activity != null) {
activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
}
Map<String, Integer> map = new HashMap<String, Integer>();
map.put("screenWidth", Integer.valueOf(metrics.widthPixels));
map.put("screenHeight", Integer.valueOf(metrics.heightPixels));
map.put("screenDensity", Integer.valueOf(metrics.densityDpi));
return map;
} catch (Exception err) {
; // just use zero values
return null;
}
}
此方法现在可以独立使用。无论您想获取有关设备屏幕的信息，请按以下步骤操作：
Map<String, Integer> map = deriveMetrics2(this);
map.get("screenWidth");
map.get("screenHeight");
map.get("screenDensity");
希望这可能对那里的人有所帮助，并且可能会发现它更容易使用。 如果我需要重新纠正或改进，请不要犹豫，让我知道！ ： - ）
干杯!!!
答案 6 :(得分：2)
DisplayMetrics displayMetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
int width = displayMetrics.widthPixels;
int height = displayMetrics.heightPixels;
答案 7 :(得分：2)
带有装饰物（包括按钮栏）：
private static String getScreenResolution(Context context) {
DisplayMetrics metrics = new DisplayMetrics();
((WindowManager) context.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getRealMetrics(metrics);
return "{" + metrics.widthPixels + "," + metrics.heightPixels + "}";
}
没有装饰物：
private static String getScreenResolution(Context context) {
DisplayMetrics metrics = new DisplayMetrics();
((WindowManager) context.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getMetrics(metrics);
return "{" + metrics.widthPixels + "," + metrics.heightPixels + "}";
}
区别在于Display类的方法 getMetrics（）与 getRealMetrics（）。
答案 8 :(得分：2)
获取DisplayMetrics的方法：
1。
val dm = activity.resources.displayMetrics
val dm = DisplayMetrics()
activity.windowManager.defaultDisplay.getMetrics(dm)
然后得到
以每英寸点数表示的屏幕密度。可以是DENSITY_LOW，DENSITY_MEDIUM或DENSITY_HIGH
dm.densityDpi
可用显示尺寸的绝对高度（以像素为单位）。
dm.heightPixels
可用显示尺寸的绝对宽度（以像素为单位）。
dm.widthPixels
X维度上每英寸屏幕的确切物理像素。
dm.xdpi
Y尺寸屏幕上每英寸的确切物理像素。
dm.ydpi
答案 9 :(得分：1)
西蒙 -
不同的屏幕尺寸具有不同的像素密度。手机上的4英寸显示屏可能有更多或更少的像素，然后说26英寸电视。如果我正确理解他想要检测当前屏幕中的哪个尺寸组，小，正常，大和超大。我唯一能想到的是检测像素密度并使用它来确定屏幕的实际大小。
答案 10 :(得分：1)
我需要这个用于我的几个应用程序，以下代码是我解决问题的方法。只是在onCreate中显示代码。这是一个独立的应用程序，可以在任何设备上运行以返回屏幕信息。
setContentView(R.layout.activity_main);
txSize = (TextView) findViewById(R.id.tvSize);
density = (TextView) findViewById(R.id.density);
densityDpi = (TextView) findViewById(R.id.densityDpi);
widthPixels = (TextView) findViewById(R.id.widthPixels);
xdpi = (TextView) findViewById(R.id.xdpi);
ydpi = (TextView) findViewById(R.id.ydpi);
Configuration config = getResources().getConfiguration();
if ((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_LARGE) {
Toast.makeText(this, "Large screen", Toast.LENGTH_LONG).show();
txSize.setText("Large screen");
} else if ((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_NORMAL) {
Toast.makeText(this, "Normal sized screen", Toast.LENGTH_LONG)
.show();
txSize.setText("Normal sized screen");
} else if ((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_SMALL) {
Toast.makeText(this, "Small sized screen", Toast.LENGTH_LONG)
.show();
txSize.setText("Small sized screen");
} else if ((getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_XLARGE) {
Toast.makeText(this, "xLarge sized screen", Toast.LENGTH_LONG)
.show();
txSize.setText("Small sized screen");
} else {
Toast.makeText(this,
"Screen size is neither large, normal or small",
Toast.LENGTH_LONG).show();
txSize.setText("Screen size is neither large, normal or small");
}
Display display = getWindowManager().getDefaultDisplay();
DisplayMetrics metrics = new DisplayMetrics();
display.getMetrics(metrics);
Log.i(TAG, "density :" + metrics.density);
density.setText("density :" + metrics.density);
Log.i(TAG, "D density :" + metrics.densityDpi);
densityDpi.setText("densityDpi :" + metrics.densityDpi);
Log.i(TAG, "width pix :" + metrics.widthPixels);
widthPixels.setText("widthPixels :" + metrics.widthPixels);
Log.i(TAG, "xdpi :" + metrics.xdpi);
xdpi.setText("xdpi :" + metrics.xdpi);
Log.i(TAG, "ydpi :" + metrics.ydpi);
ydpi.setText("ydpi :" + metrics.ydpi);
一个简单的XML文件
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity" >
<TextView
android:id="@+id/tvSize"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<TextView
android:id="@+id/density"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<TextView
android:id="@+id/densityDpi"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<TextView
android:id="@+id/widthPixels"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<TextView
android:id="@+id/xdpi"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<TextView
android:id="@+id/ydpi"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
答案 11 :(得分：0)
如果您处于非活动状态，即片段，适配器，模型类或任何其他未扩展Activity的Java类，则getResources()将无效。您可以在片段中使用getActivity()或使用传递给相应类的context。
mContext.getResources()
我建议创建一个类，说具有常用工作方法/方法的Utils。这样做的好处是，您可以通过调用此方法的应用程序中的任意位置获得所需的结果。
答案 12 :(得分：0)
下面的算法可用于识别将在静态资源之间进行选择的类别，并满足较新的XX和XXX高密度
DisplayMetrics displayMetrics = new DisplayMetrics();
activity.getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
mDensityDpi = displayMetrics.densityDpi;
mDensity = displayMetrics.density;
mDisplayWidth = displayMetrics.widthPixels;
mDisplayHeight = displayMetrics.heightPixels;
String densityStr = "Unknown";
int difference, leastDifference = 9999;
difference = Math.abs(mDensityDpi - DisplayMetrics.DENSITY_LOW);
if (difference < leastDifference) {
leastDifference = difference;
densityStr = "LOW";
}
difference = Math.abs(mDensityDpi - DisplayMetrics.DENSITY_MEDIUM);
if (difference < leastDifference) {
leastDifference = difference;
densityStr = "MEDIUM";
}
difference = Math.abs(mDensityDpi - DisplayMetrics.DENSITY_HIGH);
if (difference < leastDifference) {
leastDifference = difference;
densityStr = "HIGH";
}
difference = Math.abs(mDensityDpi - DisplayMetrics.DENSITY_XHIGH);
if (difference < leastDifference) {
leastDifference = difference;
densityStr = "XHIGH";
}
difference = Math.abs(mDensityDpi - DisplayMetrics.DENSITY_XXHIGH);
if (difference < leastDifference) {
leastDifference = difference;
densityStr = "XXHIGH";
}
difference = Math.abs(mDensityDpi - DisplayMetrics.DENSITY_XXXHIGH);
if (difference < leastDifference) {
densityStr = "XXXHIGH";
}
Log.i(TAG, String.format("Display [h,w]: [%s,%s] Density: %s Density DPI: %s [%s]", mDisplayHeight, mDisplayWidth, mDensity, mDensityDpi, densityStr));
答案 13 :(得分：0)
在Kotlin中获取屏幕分辨率或屏幕尺寸
fun getScreenResolution(context: Context): Pair<Int, Int> {
try {
val wm = context.getSystemService(Context.WINDOW_SERVICE) as WindowManager
val display = wm.defaultDisplay
val metrics = DisplayMetrics()
display.getMetrics(metrics)
val width = metrics.widthPixels
val height = metrics.heightPixels
//Log.d(AppData.TAG, "screenSize: $width, $height")
return Pair(width, height)
} catch (error: Exception) {
Log.d(AppData.TAG, "Error : autoCreateTable()", error)
}
return Pair(0, 0)
}
答案 14 :(得分：0)
代码将以以下格式为您提供结果：宽度x高度
String displayResolution = getResources().getDisplayMetrics().widthPixels + "x" + getResources().getDisplayMetrics().heightPixels;