android-为什么总是使屏幕英寸尺寸错误?
作者:互联网
我想按英寸计算设备尺寸.我正在使用此代码,每次搜索都会出现.但是问题是当我将4.5英寸的设备放在android studio中时,我的答案是4.我尝试了5.2英寸的设备,然后又得到了4.3英寸和10.1英寸->答案是9.0.那么如何获得准确的答案?
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
double wi=(double)dm.widthPixels/dm.xdpi;
double hi=(double)dm.heightPixels/dm.ydpi;
double x = Math.pow(wi,2);
double y = Math.pow(hi,2);
double screenInches = Math.sqrt(x+y);
Log.e("hello"," "+screenInches);
解决方法:
您的代码存在的问题是它没有考虑在内
动作条
软键
屏幕方向
使用以下答案
WindowManager windowManager = getWindowManager();
Display display = windowManager.getDefaultDisplay();
DisplayMetrics displayMetrics = new DisplayMetrics();
display.getMetrics(displayMetrics);
// since SDK_INT = 1;
mWidthPixels = displayMetrics.widthPixels;
mHeightPixels = displayMetrics.heightPixels;
// includes window decorations (statusbar bar/menu bar)
if (Build.VERSION.SDK_INT >= 14 && Build.VERSION.SDK_INT < 17)
{
try
{
mWidthPixels = (Integer) Display.class.getMethod("getRawWidth").invoke(display);
mHeightPixels = (Integer) Display.class.getMethod("getRawHeight").invoke(display);
}
catch (Exception ignored)
{
}
}
// includes window decorations (statusbar bar/menu bar)
if (Build.VERSION.SDK_INT >= 17)
{
try
{
Point realSize = new Point();
Display.class.getMethod("getRealSize", Point.class).invoke(display, realSize);
mWidthPixels = realSize.x;
mHeightPixels = realSize.y;
}
catch (Exception ignored)
{
}
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
double x = Math.pow(mWidthPixels/dm.xdpi,2);
double y = Math.pow(mHeightPixels/dm.ydpi,2);
double screenInches = Math.sqrt(x+y);
Log.d("debug","Screen inches : " + screenInches);
归功于him
标签:screen-size,android-screen,android 来源: https://codeday.me/bug/20191111/2020378.html