Android实例 圆角图片加阴影

Android实例]圆角图片加阴影Android实例]圆角图片加阴影/NUMPAGES13Android实例]圆角图片加阴影Android实例]圆角图片加阴影Android实现圆角图片并添加阴影此方法可实现圆角图片加阴影背景，先上图看下效果：主要的代码在MyCoverImageView类里面，具体实现是对bitmap的转换合成过程！废话少说，下面直接贴代码工具类 publicclassMyCoverImageViewextendsImageView{ privateBitmapsrc=null; publicPaintpaint=newPaint(Paint.ANTI_ALIAS_FLAG); privatevoidinit(Contextcontext){// src=zoomImg(src,300,300);// src=toRoundCorner(src,30); } publicMyCoverImageView(Contextcontext){ super(context); init(context); } publicMyCoverImageView(Contextcontext,AttributeSetattrs){ super(context,attrs); init(context); } publicMyCoverImageView(Contextcontext,AttributeSetattrs,intdefStyle){ super(context,attrs,defStyle); init(context); } @Override protectedvoidonSizeChanged(intw,inth,intoldw,intoldh){ super.onSizeChanged(w,h,oldw,oldh); } @Override protectedvoidonDraw(Canvascanvas){ super.onDraw(canvas); } publicvoidsetImageBitmapWithCoverIn(Bitmapbm){ Bitmapout=toRoundCorner(bm,20);// intw=bm.getWidth();// inth=bm.getHeight(); //cover// Canvascanvas_cover=newCanvas(cover);// NinePatchnp=newNinePatch(dd,dd.getNinePatchChunk(),null);// Rectr=newRect(0,0,w,h);// np.draw(canvas_cover,r);// Canvascanvas_out=newCanvas(out);// paint.setAntiAlias(false);// canvas_out.drawBitmap(cover,0,0,paint);//dst// paint.setXfermode(newPorterDuffXfermode(Mode.SRC_IN));// canvas_out.drawBitmap(bm,0,0,paint);//src// try{// FilemyCaptureFile=newFile("/sdcard/test.png");// myCaptureFile.deleteOnExit();// myCaptureFile.createNewFile();// BufferedOutputStreambos=newBufferedOutputStream(newFileOutputStream(myCaptureFile));// bos.flush();// bos.close();// }catch(FileNotFoundExceptione){// e.printStackTrace();// }catch(IOExceptione){// e.printStackTrace();// } super.setImageBitmap(out); } staticvoidsetCornerRadii(GradientDrawabledrawable,floatr0,floatr1, floatr2,floatr3){ drawable.setCornerRadii(newfloat[]{r0,r0,r1,r1,r2,r2,r3,r3}); } /** *@parambitmap *@parampixels *@return */ publicstaticBitmaptoRoundCorner(Bitmapbitmap,intpixels){ Paintpaint=newPaint(Paint.ANTI_ALIAS_FLAG); Bitmapoutput_shadow=Bitmap.createBitmap(bitmap.getWidth(),bitmap.getHeight(),Config.ARGB_8888);Bitmapoutput=Bitmap.createBitmap(bitmap.getWidth(),bitmap.getHeight(),Config.ARGB_8888);Rectrect=newRect(0,0,bitmap.getWidth(),bitmap.getHeight());RectFrectF=newRectF(rect);Canvascanvas=newCanvas(output);//Canvascanvas_shadow=newCanvas(output_shadow);//这里画一个渐变的图形canvas.drawColor(0x00000000);mDrawable.setBounds(rect);mDrawable.setShape(GradientDrawable.RECTANGLE);mDrawable.setGradientRadius((float)(Math.sqrt(2)*60));mDrawable.setGradientType(GradientDrawable.LINEAR_GRADIENT);//这里设置圆角。这里不是四边圆角的，要的话可以自己设置喔.可参加setCornerRadii方法setCornerRadii(mDrawable,0,pixels,0,pixels);//paint.setShadowLayer(5f,5.0f,5.0f,0xFF909090);//canvas.saveLayer(rectF,paint,Canvas.ALL_SAVE_FLAG);mDrawable.draw(canvas);paint.setXfermode(newPorterDuffXfermode(Mode.SRC_IN));paint.setShadowLayer(0,5.0f,5.0f,0xFF909090);canvas.saveLayer(rectF,paint,Canvas.ALL_SAVE_FLAG);BitmapDrawableimageDrawable=newBitmapDrawable(bitmap);imageDrawable.setBounds(rect);imageDrawable.draw(canvas);canvas.restore();output_shadow=drawImageDropShadow(output);output.recycle();//PaintshadowPaint=newPaint();////canvas_shadow.drawColor(0xFF000000);//shadowPaint.setShadowLayer(10.0f,0.0f,2.0f,0xFF000000);//canvas_shadow.drawBitmap(output,0,0,shadowPaint);returnoutput_shadow;}/***zoombitmaptocertainsize**@parambitmap*@paramwidth*@paramheight*@return*/publicstaticBitmapzoomBitmap(Bitmapbitmap,intwidth,intheight){if(bitmap==null){returnnull;}intw=bitmap.getWidth();inth=bitmap.getHeight();Matrixmatrix=newMatrix();floatscaleWidth=((float)width/w);floatscaleHeight=((float)height/h);matrix.postScale(scaleWidth,scaleHeight);Bitmapnewbmp=Bitmap.createBitmap(bitmap,0,0,w,h,matrix,true);returnnewbmp;}/***@paramoriginalBitmap*@return*/privatestaticBitmapdrawImageDropShadow(BitmaporiginalBitmap){ floatradius=8f; floatreadiusHalf=radius/2;// EmbossMaskFilterfilter=newEmbossMaskFilter(newfloat[]{0,0,1},0.1f,20,20.0f);PaintshadowPaint=newPaint();shadowPaint.setAlpha(10);shadowPaint.setColor(Color.WHITE);//shadowPaint.setAntiAlias(true);shadowPaint.setMaskFilter(filter);int[]offsetXY=newint[2];BitmapshadowBitmap=originalBitmap.extractAlpha(shadowPaint,offsetXY);Canvasc=newCanvas(shadowBitmap32);Log.d("flydy","px:"+offsetXY[0]+"py:"+offsetXY[1]);c.drawBitmap(originalBitmap,offsetXY[0],offsetXY[1],null);shadowBitmap.recycle();returnshadowBitmap32;} publicstaticBitmapzoomImg(Bitmapbm,intnewWidth,intnewHeight){ intwidth=bm.getWidth(); intheight=bm.getHeight(); floatscaleWidth=((float)new