android - Custom ImageView fits to its parent width and height -

i've been creating image processing application. image get's blackened(technically drawing on canvas paint , path on touchevent).

here's layout used blackened screen

<?xml version="1.0" encoding="utf-8"?> <framelayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent">  <framelayout     android:id="@+id/blacken_imageview"     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:layout_gravity="center"      /> </framelayout> 

in blacken activity :

public void oncreate(bundle savedinstancestate) {  super.oncreate(savedinstancestate);  setcontentview(r.layout.drawingpad_layout);  drawingpadlayout = (framelayout) findviewbyid(r.id.blacken_imageview);  mdrawingview=new drawingview(this);  mdrawingview.setbackgrounddrawable(drawable.createfrompath(imagepath)); // getting imagepath previous activity.  mdrawingview.setscaletype(scaletype.fit_center);//i tried center, center_inside i.e every scaletype. it's doesn't change imageview background scale type @  drawingpadlayout.addview(mdrawingview);  } 

q.

no matter scaletype applied drawingview. drawingview background tht's image getting streched fit screen. seems drawingview background tries match it's parent i.e framelayout how should avoid these?.

i want image background shouldn't stretched match screen. should remain intact.

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here's custom imageview used blacken on touch of it.

class drawingview extends imageview { paint mpaint; bitmap mbitmap; canvas mcanvas; path mpath; paint mbitmappaint;  public drawingview(context context) {     super(context);     // todo auto-generated constructor stub     mpaint = new paint();     mpaint.setantialias(true);     mpaint.setdither(true);     mpaint.setcolor(color.black);     mpaint.setstyle(paint.style.stroke);     mpaint.setstrokejoin(paint.join.round);     mpaint.setstrokecap(paint.cap.round);     mpaint.setstrokewidth(20);      mpath = new path();     mbitmappaint = new paint();     mbitmappaint.setcolor(color.black); } @override protected void onsizechanged(int w, int h, int oldw, int oldh) {     super.onsizechanged(w, h, oldw, oldh);     mbitmap = bitmap.createbitmap(w, h, bitmap.config.argb_8888);     mcanvas = new canvas(mbitmap); }  @override public void draw(canvas canvas) {     // todo auto-generated method stub     super.draw(canvas);     canvas.drawbitmap(mbitmap, 0, 0, mbitmappaint);     canvas.drawpath(mpath, mpaint); }  private float mx, my; private static final float touch_tolerance = 4;  private void touch_start(float x, float y) {     // mpath.reset();     mpath.moveto(x, y);     mx = x;     = y; }  private void touch_move(float x, float y) {     float dx = math.abs(x - mx);     float dy = math.abs(y - my);     if (dx >= touch_tolerance || dy >= touch_tolerance) {         mpath.quadto(mx, my, (x + mx) / 2, (y + my) / 2);         mx = x;         = y;     } }  private void touch_up() {     mpath.lineto(mx, my);     // commit path our offscreen     mcanvas.drawpath(mpath, mpaint);     // mpaint.setxfermode(new porterduffxfermode(porterduff.mode.screen));     // kill don't double draw     mpath.reset();     // mpath= new path(); }  @override public boolean ontouchevent(motionevent event) {     float x = event.getx();     float y = event.gety();      switch (event.getaction()) {     case motionevent.action_down:         touch_start(x, y);         invalidate();         break;     case motionevent.action_move:         touch_move(x, y);         invalidate();         break;     case motionevent.action_up:         touch_up();         invalidate();         break;     }     return true; }  } 

as per pskink,

replacing setbackgrounddrawable setimagedrawable resolved issue. image not getting streched more. remains intact.

mdrawingview.setimagedrawable(drawable.createfrompath(imagepath));