xml - How to improve resolution of image on Android -


i have uploaded image on 3000 3000 pixel onto android studios.

when try add image application, image not sharp.

enter image description here

here xml code

 <imageview    android:layout_width="match_parent"    android:layout_height="200dip"    android:scaletype="fitcenter"    android:contentdescription=""    android:layout_margintop="20dip"    android:layout_marginbottom="28dip"    android:src="@mipmap/login_logo" />

i believe image should big enough image view. can advise me on how increase resolution of image?

updated

when uploaded image, 4 different versions of image created automatically in system

enter image description here

the problem creating icon set, wich not have 3000 3000 pixel. check it.

the application using more appropiate size (hdpi, xhdpi, etc). resizing manually. that's why icon not sharp in screen.

when create manual image asset, real size depending on screen size. assistan takes original image , resizze it.

ldpi (low) ~120dpi mdpi (medium) ~160dpi hdpi (high) ~240dpi xhdpi (extra-high) ~320dpi xxhdpi (extra-extra-high) ~480dpi xxxhdpi (extra-extra-extra-high) ~640dpi

in pixels:

36x36 (0.75x) low-density 48x48 (1.0x baseline) medium-density 72x72 (1.5x) high-density 96x96 (2.0x) extra-high-density 144x144 (3.0x) extra-extra-high-density 192x192 (4.0x) extra-extra-extra-high-density

you can solve it, creating custom image asset following instructions:

ldpi - 0.75x mdpi - original size want show hdpi - 1.5x xhdpi - 2.0x xxhdpi - 3x xxxhdpi - 4.0x

https://developer.android.com/guide/practices/screens_support.html

or can use external library, picasso, load original image , fit it. result more professional far can dynamically fit, use placeholders, errorimage, etc.

https://www.google.es/?ion=1&espv=2#q=picasso%20android

picasso.with(getactivity())     .load(new file("path-to-file/file.png"))     .into(imageview);

-

Comments

Post a Comment

Popular posts from this blog

amazon web services - S3 Pre-signed POST validate file type? -

i know it's possible put limit on file size content-length-range header. possible validate file type? https://docs.aws.amazon.com/amazons3/latest/dev/httppostforms.html#policyconditions i see there content-type header, if set say, audio/mp3 allow mp3 files , return error if file not mp3? i found previous question answers mention validating file size: s3 direct upload restricting file size , type you can specify content-type @ post request. you can specify @ signature, post must done content-type: { "expiration": "2007-12-01t12:00:00.000z", "conditions": [ {"acl": "public-read" }, {"bucket": "johnsmith" }, {"content-type: "audio/mp3"} ] } creating html form (using aws signature version 4) edit: @ previous question found, checking content-type.
Read more

c# - Check Keyboard Input Winforms -

i wondering if instead of doing this protected override void onkeydown(keyeventargs e) { if (e.keycode == keys.a) console.writeline("the key down."); } i set bool method , this: if(keydown(keys.a)) // whatever here i've been sitting here ages trying figure out how it. can't wrap head around it. in case wondering, plan call bool inside different method, check input. since want perform action after pressing key, using keydown event enough. but in cases suppose want check if specific key down in middle of process, can use getkeystate method way: [dllimport("user32.dll", charset = charset.auto, exactspelling = true)] public static extern short getkeystate(int keycode); public const int key_pressed = 0x8000; public static bool iskeydown(keys key) { return convert.toboolean(getkeystate((int)key) & key_pressed); } you should know, each time check key state using example iskeydown(keys.a) method returns true if ke...
Read more