blocks|key|331129|text|在一些设备上，例如平板电脑，导航栏根本不能隐藏(source，请参阅“控制系统UI可见性”一节)，因为没有硬件按钮作为备份。如果你已经设法在你的设备上隐藏了工具栏，你可以做一个全屏视图，并用getWidth()和getHeight()请求它的大小。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|331130|据我所知，没有一种可靠的方法可以在所有ICS设备上获得屏幕尺寸。|331131|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.android.com/sdk/android-4.0.html^0|O|6|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

On some devices, e.g. tablets, the navigation bar can't be hidden at all (<a href="http://developer.android.com/sdk/android-4.0.html" rel="nofollow">source</a>, see section 'Controls for system UI visibility') because there's no hardware buttons as backup. If on your device you've managed to hide the bar though, you could make a full screen View and request its size with getWidth() and getHeight().

As far as I know, there isn't a reliable way to get the screen size on all ICS devices.

blocks|key|331138|text|尝尝这个|type|unstyled|depth|inlineStyleRanges|entityRanges|data|331139|++++final+DisplayMetrics+metrics+=+new+DisplayMetrics();+
++++Display+display+=+getWindowManager().getDefaultDisplay();+++++
++++Method+mGetRawH+=+null,mGetRawW+=+null;

++++try+{
++++++++++++++++++++//+For+JellyBeans+and+onward
++++++++if(android.os.Build.VERSION.SDK_INT+>=+android.os.Build.VERSION_CODES.JELLY_BEAN){
++++++++++++display.getRealMetrics(metrics);

++++++++++++realWidth+=+metrics.widthPixels;
++++++++++++realHeight+=+metrics.heightPixels;
++++++++}else{
++++++++++++mGetRawH+=+Display.class.getMethod("getRawHeight");
++++++++++++mGetRawW+=+Display.class.getMethod("getRawWidth");

++++++++++++try+{
++++++++++++++++realWidth+=+(Integer)+mGetRawW.invoke(display);
++++++++++++++++realHeight+=+(Integer)+mGetRawH.invoke(display);
++++++++++++}+catch+(IllegalArgumentException+e)+{
++++++++++++++++//+TODO+Auto-generated+catch+block
++++++++++++++++e.printStackTrace();
++++++++++++}+catch+(IllegalAccessException+e)+{
++++++++++++++++//+TODO+Auto-generated+catch+block
++++++++++++++++e.printStackTrace();
++++++++++++}+catch+(InvocationTargetException+e)+{
++++++++++++++++//+TODO+Auto-generated+catch+block
++++++++++++++++e.printStackTrace();
++++++++++++}
++++++++}|code-block|syntax|javascript|331140|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try this 

<pre><code> final DisplayMetrics metrics = new DisplayMetrics(); 
 Display display = getWindowManager().getDefaultDisplay(); 
 Method mGetRawH = null,mGetRawW = null;

 try {
 // For JellyBeans and onward
 if(android.os.Build.VERSION.SDK_INT &gt;= android.os.Build.VERSION_CODES.JELLY_BEAN){
 display.getRealMetrics(metrics);

 realWidth = metrics.widthPixels;
 realHeight = metrics.heightPixels;
 }else{
 mGetRawH = Display.class.getMethod("getRawHeight");
 mGetRawW = Display.class.getMethod("getRawWidth");

 try {
 realWidth = (Integer) mGetRawW.invoke(display);
 realHeight = (Integer) mGetRawH.invoke(display);
 } catch (IllegalArgumentException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 } catch (IllegalAccessException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 } catch (InvocationTargetException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }
 }
</code></pre>

blocks|key|331184|text|根据Ahmed的回答，这是没有错误的完整代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|331185|++++int+width+=+0,+height+=+0;
++++final+DisplayMetrics+metrics+=+new+DisplayMetrics();
++++Display+display+=+getWindowManager().getDefaultDisplay();
++++Method+mGetRawH+=+null,+mGetRawW+=+null;

++++try+{
++++++++//+For+JellyBean+4.2+(API+17)+and+onward
++++++++if+(android.os.Build.VERSION.SDK_INT+>=+android.os.Build.VERSION_CODES.JELLY_BEAN_MR1)+{
++++++++++++display.getRealMetrics(metrics);

++++++++++++width+=+metrics.widthPixels;
++++++++++++height+=+metrics.heightPixels;
++++++++}+else+{
++++++++++++mGetRawH+=+Display.class.getMethod("getRawHeight");
++++++++++++mGetRawW+=+Display.class.getMethod("getRawWidth");

++++++++++++try+{
++++++++++++++++width+=+(Integer)+mGetRawW.invoke(display);
++++++++++++++++height+=+(Integer)+mGetRawH.invoke(display);
++++++++++++}+catch+(IllegalArgumentException+e)+{
++++++++++++++++//+TODO+Auto-generated+catch+block
++++++++++++++++e.printStackTrace();
++++++++++++}+catch+(IllegalAccessException+e)+{
++++++++++++++++//+TODO+Auto-generated+catch+block
++++++++++++++++e.printStackTrace();
++++++++++++}+catch+(InvocationTargetException+e)+{
++++++++++++++++//+TODO+Auto-generated+catch+block
++++++++++++++++e.printStackTrace();
++++++++++++}
++++++++}
++++}+catch+(NoSuchMethodException+e3)+{++
++++++++e3.printStackTrace();
++++}|code-block|syntax|javascript|331186|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

From the answer of Ahmed, this is full code without error:

<pre><code> int width = 0, height = 0;
 final DisplayMetrics metrics = new DisplayMetrics();
 Display display = getWindowManager().getDefaultDisplay();
 Method mGetRawH = null, mGetRawW = null;

 try {
 // For JellyBean 4.2 (API 17) and onward
 if (android.os.Build.VERSION.SDK_INT &gt;= android.os.Build.VERSION_CODES.JELLY_BEAN_MR1) {
 display.getRealMetrics(metrics);

 width = metrics.widthPixels;
 height = metrics.heightPixels;
 } else {
 mGetRawH = Display.class.getMethod("getRawHeight");
 mGetRawW = Display.class.getMethod("getRawWidth");

 try {
 width = (Integer) mGetRawW.invoke(display);
 height = (Integer) mGetRawH.invoke(display);
 } catch (IllegalArgumentException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 } catch (IllegalAccessException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 } catch (InvocationTargetException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }
 }
 } catch (NoSuchMethodException e3) { 
 e3.printStackTrace();
 }
</code></pre>

blocks|key|331198|text|public+static+Point+getRealSize(Display+display)+{
++++++++Point+outPoint+=+new+Point();
++++++++Method+mGetRawH;
++++++++try+{
++++++++++++mGetRawH+=+Display.class.getMethod("getRawHeight");
++++++++++++Method+mGetRawW+=+Display.class.getMethod("getRawWidth");
++++++++++++outPoint.x+=+(Integer)+mGetRawW.invoke(display);
++++++++++++outPoint.y+=+(Integer)+mGetRawH.invoke(display);
++++++++++++return+outPoint;
++++++++}+catch+(Throwable+e)+{
++++++++++++return+null;
++++++++}
++++}

++++public+static+Point+getSize(Display+display)+{
++++++++if+(Build.VERSION.SDK_INT+>=+17)+{
++++++++++++Point+outPoint+=+new+Point();
++++++++++++DisplayMetrics+metrics+=+new+DisplayMetrics();
++++++++++++display.getRealMetrics(metrics);
++++++++++++outPoint.x+=+metrics.widthPixels;
++++++++++++outPoint.y+=+metrics.heightPixels;
++++++++++++return+outPoint;
++++++++}
++++++++if+(Build.VERSION.SDK_INT+>=+14)+{
++++++++++++Point+outPoint+=+getRealSize(display);
++++++++++++if+(outPoint+!=+null)
++++++++++++++++return+outPoint;
++++++++}
++++++++Point+outPoint+=+new+Point();
++++++++if+(Build.VERSION.SDK_INT+>=+13)+{
++++++++++++display.getSize(outPoint);
++++++++}+else+{
++++++++++++outPoint.x+=+display.getWidth();
++++++++++++outPoint.y+=+display.getHeight();
++++++++}
++++++++return+outPoint;
++++}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|331199|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>public static Point getRealSize(Display display) {
 Point outPoint = new Point();
 Method mGetRawH;
 try {
 mGetRawH = Display.class.getMethod("getRawHeight");
 Method mGetRawW = Display.class.getMethod("getRawWidth");
 outPoint.x = (Integer) mGetRawW.invoke(display);
 outPoint.y = (Integer) mGetRawH.invoke(display);
 return outPoint;
 } catch (Throwable e) {
 return null;
 }
 }

 public static Point getSize(Display display) {
 if (Build.VERSION.SDK_INT &gt;= 17) {
 Point outPoint = new Point();
 DisplayMetrics metrics = new DisplayMetrics();
 display.getRealMetrics(metrics);
 outPoint.x = metrics.widthPixels;
 outPoint.y = metrics.heightPixels;
 return outPoint;
 }
 if (Build.VERSION.SDK_INT &gt;= 14) {
 Point outPoint = getRealSize(display);
 if (outPoint != null)
 return outPoint;
 }
 Point outPoint = new Point();
 if (Build.VERSION.SDK_INT &gt;= 13) {
 display.getSize(outPoint);
 } else {
 outPoint.x = display.getWidth();
 outPoint.y = display.getHeight();
 }
 return outPoint;
 }
</code></pre>

blocks|key|331282|text|您可以使用getRealSize来获取屏幕分辨率。API+17及更高版本官方支持，但从API+14开始SDK中实际存在。如果您使用API+17或更高版本的SDK平台，则可以正常访问该方法，只需绕过仅在API+17中可用的警告即可。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|331283|/**
+*+Gets+the+device's+native+screen+resolution+rotated
+*+based+on+the+device's+current+screen+orientation.
+*/
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)+//To+remove+warning+about+using
+++++++++++++++++++++++++++++++++++++++++++++++//getRealSize+prior+to+API+17
private+Point+screenResolution()+{
++++WindowManager+windowManager+=
++++++++(WindowManager)+context.getSystemService(Context.WINDOW_SERVICE);
++++Display+display+=+windowManager.getDefaultDisplay();
++++Point+screenResolution+=+new+Point();

++++if+(Build.VERSION.SDK_INT+<+14)
++++++++throw+new+RuntimeException("Unsupported+Android+version.");
++++display.getRealSize(screenResolution);

++++return+screenResolution;++++
}|code-block|syntax|javascript|331284|我已经在一个真实的Android5.0.2设备和一个运行4.1.1+(可能还有其他版本)的模拟器上测试过了。|331285|感谢pointing+this+out+in+the+comments的benc。|331286|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.android.com/reference/android/view/Display.html#getRealSize%2528android.graphics.Point%2529|1|https://stackoverflow.com/questions/10991194/android-displaymetrics-returns-incorrect-screen-size-in-pixels-on-ics#comment32614508_16276792|2|https://stackoverflow.com/users/642160/benkc^0|5|B|5|B|0|0|0|0|2|X|1|10|4|2|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@$9|13|A|14|1|15]]|E|$]]|$1|F|3|G|5|H|7|16|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|17|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|18|8|@]|D|@$9|19|A|1A|1|1B]|$9|1C|A|1D|1|1E]]|E|$]]|$1|O|3|-4|5|6|7|1F|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]|W|$5|R|S|T|E|$U|X]]|Y|$5|R|S|T|E|$U|Z]]]]

You can use <a href="http://developer.android.com/reference/android/view/Display.html#getRealSize%28android.graphics.Point%29" rel="noreferrer"><code>getRealSize</code></a> to get the screen resolution. It's officially supported in API 17 and higher, but it actually existed in the SDK since API 14. If you use the SDK platform for API 17 or higher, you can access the method normally and just bypass the warning about it only being available in API 17.

<pre><code>/**
 * Gets the device's native screen resolution rotated
 * based on the device's current screen orientation.
 */
@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1) //To remove warning about using
 //getRealSize prior to API 17
private Point screenResolution() {
 WindowManager windowManager =
 (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
 Display display = windowManager.getDefaultDisplay();
 Point screenResolution = new Point();

 if (Build.VERSION.SDK_INT &lt; 14)
 throw new RuntimeException("Unsupported Android version.");
 display.getRealSize(screenResolution);

 return screenResolution; 
}
</code></pre>

I've tested this in a real Android 5.0.2 device and an emulator running 4.1.1 (and possibly others).

Thanks to <a href="https://stackoverflow.com/users/642160/benkc">benc</a> for <a href="https://stackoverflow.com/questions/10991194/android-displaymetrics-returns-incorrect-screen-size-in-pixels-on-ics#comment32614508_16276792">pointing this out in the comments</a>.

I've tried this....

<pre><code>DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
int fullscreenheight = metrics.heightPixels;
int fullscreenwidth = metrics.widthPixels;
</code></pre>

and....

<pre><code>Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int width = size.x;
int height = size.y;
</code></pre>

The Gnex has a display of 720×1280. The returned result for width/height (depending on orientation of course) is never 1280. I thought this might have something to do with the on screen navigation bar in Ice Cream Sandwich, so I hide that with :

<pre><code>getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
</code></pre>

...and then started a thread which continuously logs the screen size height/width. Even after the ICS navigation bar was completely gone....the screen size would never report the 1280 value. I would get numbers like this:

<pre><code>width = 720
height = 1184
</code></pre>

How do you get the true device screen resolution in ICS?

The reason why I need this value is because my app plays video and I would like for the video to take up the entire screen when the device is in landscape orientation. Now I know what you're thinking, why not just give the videoview a value of "match_parent" for the height/width? The reason is because my videos have multiple aspect ratios and I'd like to be able to calculate the correct video size depending on the entire width of the screen.

Android DisplayMetrics returns incorrect screen size in pixels on ICS

Android

我试过了.DisplayMetrics metrics = new DisplayMetrics();getWindowManager().getDefaultDisplay().getMetrics(metrics);int fullscreenheight = metrics.heightPixels;int fu...

问Android DisplayMetrics在ICS上返回以像素为单位的错误屏幕尺寸
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