Android Custom ImageView copy image upload

Activity Code

1  PublicclassMainactivity extends Appcompatactivity {2Processimageview Processimageview =NULL; 3intprogress=0; 4   5 @Override6protectedvoidonCreate (Bundle savedinstancestate) {7 super.oncreate (savedinstancestate); 8 Setcontentview (R.layout.activity_main); 9   Tenprocessimageview=(Processimageview) Findviewbyid (r.id.image);  One//simulate picture upload progress ANewThread (NewRunnable () { - @Override - Publicvoidrun () { the while(true){   -if(progress== -){//Image upload Complete -return;  -                     }   +progress++;  - processimageview.setprogress (progress);  +Try{   AThread.Sleep ( $);//pause for 0.2 seconds at}Catch(interruptedexception e) { - E.printstacktrace ();  -                     }   -                 }   -             }   - }). Start ();  in     }   -}

Custom View

1  PublicclassProcessimageview extends imageview{2Privatecontext Context; 3 PrivatePaint paint; 4PrivateLogutil log=logutil.getinstance (); 5intProgress =0; 6PrivateBoolean flag; 7   8 PublicProcessimageview (Context context) {9 super (context); Ten     }   One    A PublicProcessimageview (Context context, AttributeSet attrs) { - This(Context, Attrs,0);  -     }   the    - PublicProcessimageview (context context, AttributeSet attrs,intdefstyleattr) {   - Super (context, attrs, defstyleattr);  - This. context=context;  +Paint=NewPaint ();  -     }   +    A @Override atprotectedvoidOnDraw (canvas canvas) { - Super.ondraw (canvas);  -Paint.setantialias (true);//Anti- aliasing -Paint.setstyle (Paint.Style.FILL);//set Paint to solid, Paint.Style.STROKE to hollow -Paint.setcolor (Color.parsecolor ("#70000000"));//set to Translucent -Canvas.drawrect (0,0, GetWidth (), GetHeight ()-getheight () *progress/ -, paint);//here GetWidth () Gets the image object width height XML value in    -Paint.setcolor (Color.parsecolor ("#00000000"));//fully Transparent toCanvas.drawrect (0, GetHeight ()-getheight () * Progress/ -,   + getwidth (), getheight (), paint);  -    theif(!flag) {   *Paint.settextsize ( -);  $Paint.setcolor (Color.parsecolor ("#FFFFFF")); Panax NotoginsengPaint.setstrokewidth (2);  -Rect rect =NewRect ();  thePaint.gettextbounds ("100%",0,"100%". Length (), rect);//determine the width of text +Canvas.drawtext (Progress +"%", getwidth ()/2-Rect.width ()/2,   AGetHeight ()/2, paint);  the         }   +     }   -    $ PublicvoidSetprogress (intprogress) {   $ This. Progress =progress;  -if(progress== -){   -flag=true;  the         }   - postinvalidate (); Wuyi     }   the}

Look at the custom view class, in the main OnDraw () method.

The drawing is divided into three parts,

The first part is the upper semi-transparent area

Paint.setantialias (TRUE); Anti-aliasing Paint.setstyle (Paint.Style.FILL); Set Paint to solid, Paint.Style.STROKE as Hollow Paint.setcolor (Color.parsecolor ("#70000000")); Set to Translucent Canvas.drawrect (0,0,getwidth (), GetHeight ()-getheight () *progress/100,paint);

Part II is divided into the next fully transparent area

Paint.setcolor (Color.parsecolor ("#00000000"));//Fully transparent Canvas.drawrect (0, GetHeight ()-getheight () * progress/100, GetWidth (), getheight (), paint);

The third part is the progress value change in the middle.

if (!flag) {paint.settextsize (30);        Paint.setcolor (Color.parsecolor ("#FFFFFF"));        Paint.setstrokewidth (2);        Rect rect = new rect (); Paint.gettextbounds ("100%", 0, "100%". Length (), rect);//determines the width of the text Canvas.drawtext (progress + "%", getwidth ()/2-r  Ect.width ()/2, GetHeight ()/2, paint); }

　　

Android Custom ImageView copy image upload