如何获得Android设备的屏幕尺寸是多少？
问题描述：
我有相同的分辨率两款Android设备
I have two android device with same resolution
设备1 - >分辨率480x800的屏幕对角线尺寸 - >4.7英寸
Device1 -> resolution 480x800 diagonal screen size -> 4.7 inches
设备2 - >分辨率480x800的屏幕对角线尺寸 - >4.0英寸
Device2 -> resolution 480x800 diagonal screen size -> 4.0 inches
如何找到设备的屏幕对角线尺寸？
How to find device diagonal screen size?
Detect 7英寸和10英寸的平板电脑编程
我已经用了上面的链接，但它提供了两种设备屏幕对角线尺寸 - > 5.8
I have used the above link but it gives both device diagonal screen size -> 5.8
答
试试这个code得到的屏幕尺寸以英寸
try this code to get screen size in inch
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
int width=dm.widthPixels;
int height=dm.heightPixels;
int dens=dm.densityDpi;
double wi=(double)width/(double)dens;
double hi=(double)height/(double)dens;
double x = Math.pow(wi,2);
double y = Math.pow(hi,2);
double screenInches = Math.sqrt(x+y);