android - How to set position for image matrix? -


i have gridview images. on long click screen gets dark (with black half transparent image gets visible) , image become visible has same resource of image long clicked grid.

what want able drag image (which have succeeded), image shows @ top corner (as designed layout in xml) , want show clicked (to precised, want center of dragable picture perfumed long click).

my image fill_parent on framelayout , set on matrix scale control position...

this image part of xml:

<imageview     android:id="@+id/imgmainselectedmovie"     android:layout_width="fill_parent"     android:layout_height="fill_parent"     android:scaletype="matrix"     android:visibility="invisible"     android:src="@drawable/escape" />

and ontouch() part:

public boolean ontouch(view v, motionevent ev) {         switch (ev.getaction()) {         case motionevent.action_down:             x = ev.getx();             y = ev.gety();             if (longclicked) return true;             break;         case motionevent.action_move:             if (longclicked) {                 if (!dragstarted) {                     dragstarted = true;                     myimageview.setx(x);                     myimageview.sety(y);                 }             matrix.posttranslate((ev.getx() - x), (ev.gety() - y));             x = ev.getx();             y = ev.gety();             myimageview.setimagematrix(matrix);             return true;             }             break;         case motionevent.action_up:             if (longclicked) {             dark.setvisibility(view.invisible);             myimageview.setvisibility(view.invisible);             longclicked = false;             return true;             }          }         return false;     }

thist tried solve problem:

if (!dragstarted) {         dragstarted = true; //changed true when onitemlongclick called         myimageview.setx(x);         myimageview.sety(y);             }

but changes "start point" of image layout entered x , y.

problem solved :) did when onitemlongclick calls took x , y measured action_down case in ontouch, took matrix current location , did posttranslate coordinates action_down minus location of image. solution part onitemlongcliick:

matrix.getvalues(values); matrixx = values[matrix.mtrans_x]; matrixy = values[matrix.mtrans_y]; matrix.posttranslate(x-matrixx, y-matrixy); myimageview.setimagematrix(matrix);

i'm wondering why didn't put kind of "setplace" method matrix...


Comments

Post a Comment

Popular posts from this blog

ios - iPhone/iPad different view orientations in different views , and apple approval process -

i force app's home screen portrait , other views landscape. apple rejects app if this? if not , how force first screen launch in portrait mode? , force other screens launch in landscape. this not duplicate question search every possible answer in website. i force app's home screen portrait , other views landscape. apple rejects app if this? no apple not reject app this. have lot of apps doesn't support orientation. forcing on 1 screen won't cause app reject. if not , how force first screen launch in portrait mode? , force other screens launch in landscape. can on write : -(nsuinteger)supportedinterfaceorientations; function.
Read more

java Extracting Zip file -

i'm looking way extract zip file. far have tried java.util.zip , org.apache.commons.compress, both gave corrupted output. basically, input zip file contain 1 single .doc file. java.util.zip: output corrupted. org.apache.commons.compress: output blank file, 2 mb size. so far commercial software winrar work perfectly. there java library make use of this? this method using java.util library: public void extractzipnative(file filezip) { zipinputstream zis; stringbuilder sb; try { zis = new zipinputstream(new fileinputstream(filezip)); zipentry ze = zis.getnextentry(); byte[] buffer = new byte[(int) ze.getsize()]; fileoutputstream fos = new fileoutputstream(this.tempfolderpath+ze.getname()); int len; while ((len=zis.read(buffer))>0) { fos.write(buffer); } fos.flush(); fos.close(); } catch (filenotfoundexception e) { // todo auto-generated catch block ...
Read more

C# WinForm - loading screen -

i ask how make loading screen (just picture or something) appears while program being loaded, , disappears when program has finished loading. in fancier versions, have seen process bar (%) displayed. how can have that, , how calculate % show on it? i know there form_load() event, not see form_loaded() event, or % property / attribute anywhere. all need create 1 form splash screen , show before main start showing landing page , close splash once landing page loaded. class splashform { //delegate cross thread call close private delegate void closedelegate(); //the type of form displayed splash screen. private static splashform splashform; static public void showsplashscreen() { // make sure launched once. if (splashform != null) return; thread thread = new thread(new threadstart(splashform.showform)); thread.isbackground = true; thread.setapartmentstate(apartmentstate.sta); thread....
Read more