[问答] 自定义手表表盘无法显示绘制内容 创建表盘后，复制修改代码后显示不出来，打印了log，方法都有被执行，数据也正常。publicclassWatchFaceMYextendsCanvasWatchFaceService{privatestaticfinalStringTAG="WatchFaced";@OverridepublicEngineonCreateEngine(){returnnewOneEngine(this);}privateclassOneEngineextendsEngine{privateintcircleRadius;privateCalendarmCalendar;privatePaintmSecondPaint;privatePaintmMinPaint;privatePaintmHourPaint;privatePaintmScalePaint;publicOneEngine(Contextcontext){circleRadius=SizeUtils.dip2px(context,15f);}@OverridepublicvoidonCreate(SurfaceHolderholder){super.onCreate(holder);//获取日历mCalendar=Calendar.getInstance();//设置时区mCalendar.setTimeZone(TimeZone.getDefault());//监听时区变化initPaints();}privatevoidinitPaints(){//秒针mSecondPaint=newPaint();mSecondPaint.setColor(getColor(R.color.secondDefaultColor));mSecondPaint.setStyle(Paint.Style.STROKE);mSecondPaint.setStrokeCap(Paint.Cap.ROUND);mSecondPaint.setStrokeWidth(5f);mSecondPaint.setAntiAlias(true);//分针mMinPaint=newPaint();mMinPaint.setColor(getColor(R.color.minDefaultColor));mMinPaint.setStyle(Paint.Style.STROKE);mMinPaint.setStrokeCap(Paint.Cap.ROUND);mMinPaint.setStrokeWidth(10f);mMinPaint.setAntiAlias(true);//时针mHourPaint=newPaint();mHourPaint.setColor(getColor(R.color.hourDefaultColor));mHourPaint.setStyle(Paint.Style.STROKE);mHourPaint.setStrokeWidth(15f);mHourPaint.setStrokeCap(Paint.Cap.ROUND);mHourPaint.setAntiAlias(true);//刻度mScalePaint=newPaint();mScalePaint.setColor(getColor(R.color.scaleDefaultColor));mScalePaint.setStyle(Paint.Style.STROKE);mScalePaint.setStrokeWidth(5f);mScalePaint.setStrokeCap(Paint.Cap.ROUND);mScalePaint.setAntiAlias(true);Log.i(TAG,"initPaints:");}@OverridepublicvoidonDestroy(){super.onDestroy();mSecondPaint=null;mMinPaint=null;mHourPaint=null;mScalePaint=null;}@OverridepublicvoidonDraw(Canvascanvas,Rectbounds){longtimeMillis=System.currentTimeMillis();mCalendar.setTimeInMillis(timeMillis);//绘制背景canvas.drawColor(Color.parseColor("#000000"));//绘制刻度drawScale(canvas,bounds);intsecondV=mCalendar.get(Calendar.SECOND);if(secondV==0){//绘制秒针drawSecondLine(canvas,bounds.centerX());//绘制分针drawMinuteLine(canvas,bounds.centerX());//绘制时针drawHourLine(canvas,bounds.centerX());}else{//绘制时针drawHourLine(canvas,bounds.centerX());//绘制分针drawMinuteLine(canvas,bounds.centerX());//绘制秒针drawSecondLine(canvas,bounds.centerX());}Log.i(TAG,"onDraw:");}privatevoiddrawScale(Canvascanvas,Rectbounds){floatradius=bounds.centerX();floatinnerR=bounds.centerX()*0.85f;floatoutR=bounds.centerX()*0.95f;//for(inti=0;i<12;i++){//doubleth=i*Math.PI*2/12;////doubleinnerB=Math.cos(th)*innerR;//intinnerX=(int)(mHeight/2-innerB);//doubleinnerA=Math.sin(th)*innerR;//intinnerY=(int)(mWidth/2+innerA);////doubleoutB=Math.cos(th)*outR;//intoutX=(int)(mHeight/2-outB);//doubleoutA=Math.sin(th)*outR;//intoutY=(int)(mWidth/2+outA);//canvas.drawLine(innerY,innerX,outY,outX,mScalePaint);////}canvas.drawCircle(radius,radius,circleRadius,mScalePaint);canvas.save();for(inti=0;i<12;i++){canvas.drawLine(radius,radius-outR,radius,radius-innerR,mScalePaint);canvas.rotate(30,radius,radius);}canvas.restore();Log.i(TAG,"drawScale:");}privatevoiddrawSecondLine(Canvascanvas,floatradius){canvas.save();floatsecondRadius=radius*0.8f;intsecondValue=mCalendar.get(Calendar.SECOND);intsecondRotate=secondValue*6;canvas.rotate(secondRotate,radius,radius);canvas.drawLine(radius,radius-secondRadius,radius,radius-circleRadius,mSecondPaint);canvas.restore();Log.i(TAG,"drawSecondLine:");}privatevoiddrawMinuteLine(Canvascanvas,floatradius){canvas.save();floatminRadius=radius*0.7f;intminValue=mCalendar.get(Calendar.MINUTE);intminRotate=minValue*6;canvas.rotate(minRotate,radius,radius);canvas.drawLine(radius,radius-minRadius,radius,radius-circleRadius,mMinPaint);canvas.restore();Log.i(TAG,"drawMinuteLine:");}privatevoiddrawHourLine(Canvascanvas,floatradius){floathourRadius=radius*0.6f;inthourValue=mCalendar.get(Calendar.HOUR);Log.i(TAG,"hourRadius:"+hourRadius);//求旋转角度inthourOffsetRotate=mCalendar.get(Calendar.MINUTE)/2;//60/30inthourRotate=hourValue*30+hourOffsetRotate;canvas.save();canvas.rotate(hourRotate,radius,radius);canvas.drawLine(radius,radius-hourRadius,radius,radius-circleRadius,mHourPaint);canvas.restore();Log.i(TAG,"drawHourLine:");}}}
