如何获得屏幕密度编程在android?
我的意思是:如何找到当前设备的屏幕dpi ?
如何获得屏幕密度编程在android?
我的意思是:如何找到当前设备的屏幕dpi ?
当前回答
这应该有助于你的活动……
void printSecreenInfo(){
Display display = getWindowManager().getDefaultDisplay();
DisplayMetrics metrics = new DisplayMetrics();
display.getMetrics(metrics);
Log.i(TAG, "density :" + metrics.density);
// density interms of dpi
Log.i(TAG, "D density :" + metrics.densityDpi);
// horizontal pixel resolution
Log.i(TAG, "width pix :" + metrics.widthPixels);
// actual horizontal dpi
Log.i(TAG, "xdpi :" + metrics.xdpi);
// actual vertical dpi
Log.i(TAG, "ydpi :" + metrics.ydpi);
}
输出:
I/test( 1044): density :1.0
I/test( 1044): D density :160
I/test( 1044): width pix :800
I/test( 1044): xdpi :160.0
I/test( 1044): ydpi :160.42105
其他回答
科特林
LocalContext.current.resources.displayMetrics.density
得到密度乘数。
你应该试试这个。刚刚添加了一个方法,它将找到并显示吐司。设备属于哪个类别。
public static int differentDensityAndScreenSize(Context context) {
int value = 20;
String str = "";
if ((context.getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_SMALL) {
switch (context.getResources().getDisplayMetrics().densityDpi) {
case DisplayMetrics.DENSITY_LOW:
str = "small-ldpi";
value = 20;
break;
case DisplayMetrics.DENSITY_MEDIUM:
str = "small-mdpi";
value = 20;
break;
case DisplayMetrics.DENSITY_HIGH:
str = "small-hdpi";
value = 20;
break;
case DisplayMetrics.DENSITY_XHIGH:
str = "small-xhdpi";
value = 20;
break;
case DisplayMetrics.DENSITY_XXHIGH:
str = "small-xxhdpi";
value = 20;
break;
case DisplayMetrics.DENSITY_XXXHIGH:
str = "small-xxxhdpi";
value = 20;
break;
case DisplayMetrics.DENSITY_TV:
str = "small-tvdpi";
value = 20;
break;
default:
str = "small-unknown";
value = 20;
break;
}
} else if ((context.getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_NORMAL) {
switch (context.getResources().getDisplayMetrics().densityDpi) {
case DisplayMetrics.DENSITY_LOW:
str = "normal-ldpi";
value = 82;
break;
case DisplayMetrics.DENSITY_MEDIUM:
str = "normal-mdpi";
value = 82;
break;
case DisplayMetrics.DENSITY_HIGH:
str = "normal-hdpi";
value = 82;
break;
case DisplayMetrics.DENSITY_XHIGH:
str = "normal-xhdpi";
value = 90;
break;
case DisplayMetrics.DENSITY_XXHIGH:
str = "normal-xxhdpi";
value = 96;
break;
case DisplayMetrics.DENSITY_XXXHIGH:
str = "normal-xxxhdpi";
value = 96;
break;
case DisplayMetrics.DENSITY_TV:
str = "normal-tvdpi";
value = 96;
break;
default:
str = "normal-unknown";
value = 82;
break;
}
} else if ((context.getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_LARGE) {
switch (context.getResources().getDisplayMetrics().densityDpi) {
case DisplayMetrics.DENSITY_LOW:
str = "large-ldpi";
value = 78;
break;
case DisplayMetrics.DENSITY_MEDIUM:
str = "large-mdpi";
value = 78;
break;
case DisplayMetrics.DENSITY_HIGH:
str = "large-hdpi";
value = 78;
break;
case DisplayMetrics.DENSITY_XHIGH:
str = "large-xhdpi";
value = 125;
break;
case DisplayMetrics.DENSITY_XXHIGH:
str = "large-xxhdpi";
value = 125;
break;
case DisplayMetrics.DENSITY_XXXHIGH:
str = "large-xxxhdpi";
value = 125;
break;
case DisplayMetrics.DENSITY_TV:
str = "large-tvdpi";
value = 125;
break;
default:
str = "large-unknown";
value = 78;
break;
}
} else if ((context.getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) == Configuration.SCREENLAYOUT_SIZE_XLARGE) {
switch (context.getResources().getDisplayMetrics().densityDpi) {
case DisplayMetrics.DENSITY_LOW:
str = "xlarge-ldpi";
value = 125;
break;
case DisplayMetrics.DENSITY_MEDIUM:
str = "xlarge-mdpi";
value = 125;
break;
case DisplayMetrics.DENSITY_HIGH:
str = "xlarge-hdpi";
value = 125;
break;
case DisplayMetrics.DENSITY_XHIGH:
str = "xlarge-xhdpi";
value = 125;
break;
case DisplayMetrics.DENSITY_XXHIGH:
str = "xlarge-xxhdpi";
value = 125;
break;
case DisplayMetrics.DENSITY_XXXHIGH:
str = "xlarge-xxxhdpi";
value = 125;
break;
case DisplayMetrics.DENSITY_TV:
str = "xlarge-tvdpi";
value = 125;
break;
default:
str = "xlarge-unknown";
value = 125;
break;
}
}
// The Toast will show the Device falls in Which Categories.
Toast.makeText(MainActivity.this, ""+str, Toast.LENGTH_SHORT).show();
return value;
}
http://www.androidwarriors.com/2016/01/how-to-find-different-devices-screen.html
DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
switch(metrics.densityDpi) {
case DisplayMetrics.DENSITY_LOW:
break;
case DisplayMetrics.DENSITY_MEDIUM:
break;
case DisplayMetrics.DENSITY_HIGH:
break;
}
这将在API级别4和更高的级别上工作。
另一个答案是:
/**
* @return "ldpi", "mdpi", "hdpi", "xhdpi", "xhdpi", "xxhdpi", "xxxhdpi", "tvdpi", or "unknown".
*/
public static String getDensityBucket(Resources resources) {
switch (resources.getDisplayMetrics().densityDpi) {
case DisplayMetrics.DENSITY_LOW:
return "ldpi";
case DisplayMetrics.DENSITY_MEDIUM:
return "mdpi";
case DisplayMetrics.DENSITY_HIGH:
return "hdpi";
case DisplayMetrics.DENSITY_XHIGH:
return "xhdpi";
case DisplayMetrics.DENSITY_XXHIGH:
return "xxhdpi";
case DisplayMetrics.DENSITY_XXXHIGH:
return "xxxhdpi";
case DisplayMetrics.DENSITY_TV:
return "tvdpi";
default:
return "unknown";
}
}
得到dpi:
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
// will either be DENSITY_LOW, DENSITY_MEDIUM or DENSITY_HIGH
int dpiClassification = dm.densityDpi;
// these will return the actual dpi horizontally and vertically
float xDpi = dm.xdpi;
float yDpi = dm.ydpi;