大家好，又见面了，我是你们的朋友全栈君。如果您正在找激活码,请点击查看最新教程,关注关注公众号 “全栈程序员社区” 获取激活教程,可能之前旧版本教程已经失效.最新Idea2022.1教程亲测有效,一键激活。
Jetbrains全系列IDE使用 1年只要46元 售后保障 童叟无欺
在Activity中
// ME722 测试 480*854 竖屏
Display display = this.getWindowManager().getDefaultDisplay();
int nHeight = display.getHeight(); //569
int nWidth = display.getWidth(); //320
DisplayMetrics metrics = new DisplayMetrics();
display.getMetrics( metrics );
int nDeviceHeight = (int)(metrics.heightPixels * metrics.density); // 569 * 1.5 = 853.5
int nDeviceWidth = (int)(metrics.widthPixels * metrics.density); // 320 * 1.5 = 480
float fPhisycalHeight = metrics.heightPixels * metrics.density / metrics.densityDpi; // 3.55625
float fPhisycalWidth = metrics.widthPixels * metrics.density / metrics.densityDpi; // 2.0
在AndroidManifest.xml中添加 <supports-screens android:anyDensity=”true”/> 之后
或者是添加<uses-sdk android:minSdkVersion=”4″ /> 之后（最小版本号是4以及以上）
Display display = this.getWindowManager().getDefaultDisplay();
int nHeight = display.getHeight(); //854
int nWidth = display.getWidth(); //480
display.getMetrics( metrics );
metrics.heightPixels 854
metrics.widthPixels 480
metrics.density 1.5
多看Dev Guide
Lets you specify the screen dimensions the application supports. By default, a modern application (using API Level 4 or higher) supports all screen sizes; older applications are assumed to support only the “normal” screen size. Screen size is determined as the available pixels to an application after density scaling has been applied. (Note that screen size is a separate axis from screen density.)
Constants
public static final int DENSITY_DEFAULT
The reference density used throughout the system.
public static final int DENSITY_HIGH
Standard quantized DPI for high-density screens.
public static final int DENSITY_LOW
Standard quantized DPI for low-density screens.
public static final int DENSITY_MEDIUM
Standard quantized DPI for medium-density screens.
public static final int DENSITY_XHIGH
Standard quantized DPI for extra-high-density screens.
An application “supports” a given screen size if it fills the entire screen and works as expected. By default, the system will resize your application to fill the screen, if you have set either minSdkVersion or targetSdkVersion to "4" or higher. Resizing works well for most applications and you don’t have to do any extra work to make your application work on larger screens.
发布者：全栈程序员-用户IM，转载请注明出处：https://javaforall.cn/170370.html原文链接：https://javaforall.cn
【正版授权，激活自己账号】： Jetbrains全家桶Ide使用，1年售后保障，每天仅需1毛
【官方授权 正版激活】： 官方授权 正版激活 支持Jetbrains家族下所有IDE 使用个人JB账号...
