android - Logical concurrency issue with Picasso in custom View -


i creating custom view displays image bitmap loaded picasso framework. initialize need both bitmap , view measure. struggling threading cannot predict thread finish earlier.

the view starts picasso custom target in constructor. saves view's width , size in onsizechanged.

public class figureview extends view {  public figureview(context context) {     super(context);     target = new loadpicturetarget();     picasso.with(getcontext()).load(r.drawable.amalka).into(target); }  protected void onsizechanged(int w, int h, int oldw, int oldh) {     super.onsizechanged(w, h, oldw, oldh);     tilesrect.set(0, 0, w, h); }

and target sets bitmap , computes resized picture dimensions fit view's available space:

class loadpicturetarget implements target {     public void onbitmaploaded(bitmap bitmap, picasso.loadedfrom from) {         basebitmap = bitmap;         origpicturerect = new rect(0, 0, basebitmap.getwidth(), basebitmap.getheight());         scaledpicturerect = misc.centerhorizontally(tilesrect.width(), tilesrect.height(), basebitmap.getwidth(), basebitmap.getheight());            invalidate();     }      public void onbitmapfailed(drawable errordrawable) { }      public void onprepareload(drawable placeholderdrawable) {  } }

the problem onbitmaploaded called earlier onsizechanged. not always, cannot move new dimension calculation there either. moved onpaint() not solution need perform intensive bitmap manipulation once have tghe bitmap , available space dimensions.

what proper way implementation custom view picasso when need view size?


-

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