Android自定义带圆角的ImageView

2023-08-16 22:08:04 73

packagecom.yizooo.yizooo.ui; importandroid.content.Context; importandroid.graphics.Bitmap; importandroid.graphics.Bitmap.Config; importandroid.graphics.Canvas; importandroid.graphics.Paint; importandroid.graphics.PixelFormat; importandroid.graphics.RectF; importandroid.graphics.PorterDuff.Mode; importandroid.graphics.PorterDuffXfermode; importandroid.graphics.Rect; importandroid.graphics.drawable.BitmapDrawable; importandroid.graphics.drawable.Drawable; importandroid.util.AttributeSet; importandroid.widget.ImageView; importcom.lidroid.xutils.bitmap.core.AsyncDrawable; /** *Createdby雪宝宝on2016/3/27. *自定义圆角工具 */ publicclassRoundImageViewextendsImageView{ privatePaintpaint; publicRoundImageView(Contextcontext){ this(context,null); } publicRoundImageView(Contextcontext,AttributeSetattrs){ this(context,attrs,0); } publicRoundImageView(Contextcontext,AttributeSetattrs,intdefStyle){ super(context,attrs,defStyle); paint=newPaint(); } /** *绘制圆角矩形图片 */ @Override protectedvoidonDraw(Canvascanvas){ Drawabledrawable=getDrawable(); Bitmapbitmap=null; if(null!=drawable&&drawableinstanceofBitmapDrawable){ BitmapDrawablebitmapDrawable=(BitmapDrawable)drawable; bitmap=bitmapDrawable.getBitmap(); //Bitmapbitmap=((BitmapDrawable)drawable).getBitmap(); Bitmapb=getRoundBitmap(bitmap,10); finalRectrectSrc=newRect(0,0,b.getWidth(),b.getHeight()); finalRectrectDest=newRect(0,0,getWidth(),getHeight()); paint.reset(); canvas.drawBitmap(b,rectSrc,rectDest,paint); }//防止出现类型转换异常 elseif(this.getDrawable()instanceofAsyncDrawable){ bitmap=Bitmap .createBitmap( getWidth(), getHeight(), drawable.getOpacity()!=PixelFormat.OPAQUE?Bitmap.Config.ARGB_8888 :Bitmap.Config.RGB_565); Canvascanvas1=newCanvas(bitmap); //canvas.setBitmap(bitmap); drawable.setBounds(0,0,getWidth(), getHeight()); drawable.draw(canvas1); } else{ super.onDraw(canvas); } } /** *获取圆角矩形图片方法 *@parambitmap *@paramroundPx,一般设置成14 *@returnBitmap *@authorcaizhiming */ privateBitmapgetRoundBitmap(Bitmapbitmap,introundPx){ Bitmapoutput=Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(),Config.ARGB_8888); Canvascanvas=newCanvas(output); finalintcolor=0xff424242; finalRectrect=newRect(0,0,bitmap.getWidth(),bitmap.getHeight()); finalRectFrectF=newRectF(rect); paint.setAntiAlias(true); canvas.drawARGB(0,0,0,0); paint.setColor(color); intx=bitmap.getWidth(); canvas.drawRoundRect(rectF,roundPx,roundPx,paint); paint.setXfermode(newPorterDuffXfermode(Mode.SRC_IN)); canvas.drawBitmap(bitmap,rect,rect,paint); returnoutput; } }

Android自定义带圆角的ImageView

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