先上个图:
我将整个View分为三个大的模块,并对他们分别进行绘制。包块外面有一个完整的圆环、一段弧(弧度的终点是一个小圆) 以及中间的文字
首先是外面的圆环,圆环很简单直接调用canvas.drawCircle(),这个方法提供圆心半径和画笔就ok。
private void drawBlackCircle(Canvas canvas){
mPaint.setColor(Color.parseColor("#535353"));
mPaint.setStrokeWidth(circleRingWidth);
mPaint.setStyle(Paint.Style.STROKE);
canvas.drawCircle(getWidth()/2,getHeight()/2,Math.min(getWidth(),getHeight())/2-ringWidth,mPaint);
}
(2)弧
外面的弧带颜色的弧,首先要确定画弧的位置,API里给我们提供的确定弧度位置的方式是一个RectF也就是一个矩形的区域;当View的形状不为正方形的时候 长度和宽度不相同的时候,我们要取小边,也就是长度和宽度里比较短的作为半径,并且弧始终出去view的中心。
正常的弧度位置是在如图位置0度,顺时针方向叠加相应的度数绘制。而当前我们绘制的view是正方位置逆时针绘制的。所以要对canvas进行旋转处理,绘制弧度。具体代码如下
private void drawRing(Canvas canvas){
mPaint.setColor(ringColor);
mPaint.setStrokeWidth(ringWidth);
mPaint.setStyle(Paint.Style.STROKE);
canvas.save();
canvas.rotate(-90,getWidth()/2,getHeight()/2) ;
int radus = Math.min(getWidth(),getHeight())/2 -ringWidth;
RectF rectF = new RectF(getWidth()/2-radus,getHeight()/2-radus,getWidth()/2+radus,getHeight()/2+radus);
canvas.drawArc(rectF,0,deGree*-1,false,mPaint);
canvas.restore();
}
(3)内容文字
上半部分文字使用了自定义的字体,具体设置的方式参照代码。
下半部分由于字体个数不确定在适当的时候需要换行,使用StaticLayout 可实现这一效果,需要注意的是StaticLayout 不能指定绘制的位置 所以需要通过移动画布实现这一效果。
private void drawOrderNumberText(Canvas canvas){
/*
* 上半部分
*/
Typeface typeface = Typeface.createFromAsset(getContext().getAssets(),"fonts/DIN1451EF_EngAlt.otf");
textPaint.setTypeface(typeface);
textPaint.setTextSize(ScreenUtil.sp2px(orderTextSize));
canvas.drawText(orderNum,getWidth()/2-textPaint.measureText(orderNum),getHeight()/2-ScreenUtil.dip2px(totalTextSize)/3,textPaint);
textPaint.setTextSize(ScreenUtil.sp2px(totalTextSize));
textPaint.setColor(Color.parseColor("#bbbbbb"));
canvas.drawText("/"+totalNum,getWidth()/2,getHeight()/2-ScreenUtil.dip2px(totalTextSize)/3,textPaint);
/*
* 中间线
*/
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setStrokeWidth(ScreenUtil.dip2px(1));
mPaint.setColor(Color.parseColor("#cccccc"));
int radius = Math.min(getWidth(),getHeight())/2;
canvas.drawLine((getWidth()/2-radius)+ringWidth*2,getHeight()/2,getWidth()/2+radius-ringWidth*2,getHeight()/2,mPaint);
/*
* 下半部分
*/
canvas.save();
textPaint.setTextSize(ScreenUtil.sp2px(nameTextSize));
textPaint.setTypeface(Typeface.DEFAULT);
textPaint.setColor(Color.parseColor("#6f6f6f"));
canvas.translate(getWidth()/2-getWidth()/4,getHeight()/2);
StaticLayout staticLayout = new StaticLayout(workName,textPaint,getWidth()/2, Layout.Alignment.ALIGN_CENTER,1.0f,0f,true);
staticLayout.draw(canvas);
canvas.restore();
}
最后完成的代码
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.RectF;
import android.graphics.Typeface;
import android.support.annotation.Nullable;
import android.text.Layout;
import android.text.StaticLayout;
import android.text.TextPaint;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import java.util.Queue;
import weshape.com.ifactory.util.ScreenUtil;
/**
* Created by 李不凡 on 2017/5/10.
*/
public class OrderCircleView extends View {
private int deGree = 90;
private int ringWidth = ScreenUtil.dip2px(8);
private int circleRingWidth =ScreenUtil.dip2px(2);
private int ringColor = Color.parseColor("#FB0103");
private int nameTextSize = 13;
private int totalTextSize = 14;
private int orderTextSize = 30;
private String totalNum = "";
private String orderNum = "";
private String workName = "";
/**
* 初始化数据
*/
public void initData(int totalNum,int orderNum,String workName,int ringColor){
this.totalNum = totalNum+"";
this.orderNum = String.format("%02d",orderNum);
this.workName = workName;
this.ringColor = ringColor;
this.deGree = (int) (360*(orderNum/(totalNum*1f)));
Log.d("drummor",orderNum/(totalNum*0.1f)+"deg"+deGree);
invalidate();
}
/**
*
* @param ringWidth 外面狐的宽度
* @param circleRingWidth 下面圆环的宽度
*/
public void setting(int ringWidth,int circleRingWidth){
this.ringWidth = ringWidth;
this.circleRingWidth = circleRingWidth;
invalidate();
}
/**
* 画环
* @param canvas
*/
private void drawBlackCircle(Canvas canvas){
mPaint.setColor(Color.parseColor("#535353"));
mPaint.setStrokeWidth(circleRingWidth);
mPaint.setStyle(Paint.Style.STROKE);
canvas.drawCircle(getWidth()/2,getHeight()/2,Math.min(getWidth(),getHeight())/2-ringWidth,mPaint);
}
/**
* 画狐
* @param canvas
*/
private void drawRing(Canvas canvas){
mPaint.setColor(ringColor);
mPaint.setStrokeWidth(ringWidth);
mPaint.setStyle(Paint.Style.STROKE);
canvas.save();
canvas.rotate(-90,getWidth()/2,getHeight()/2) ;
int radus = Math.min(getWidth(),getHeight())/2 -ringWidth;
RectF rectF = new RectF(getWidth()/2-radus,getHeight()/2-radus,getWidth()/2+radus,getHeight()/2+radus);
canvas.drawArc(rectF,0,deGree*-1,false,mPaint);
canvas.restore();
}
/**
* 画球
* @param canvas
*/
private void drawLittePoint(Canvas canvas){
mPaint.setColor(Color.parseColor("#f1f1f1"));
mPaint.setStyle(Paint.Style.FILL);
canvas.save();
canvas.rotate(-deGree,getWidth()/2,getHeight()/2);
canvas.drawCircle(getWidth()/2,ringWidth,ringWidth/2,mPaint);
canvas.restore();
}
/**
* 写字 内容
* @param canvas
*/
private void drawOrderNumberText(Canvas canvas){
/*
* 上半部分
*/
Typeface typeface = Typeface.createFromAsset(getContext().getAssets(),"fonts/DIN1451EF_EngAlt.otf");
textPaint.setTypeface(typeface);
textPaint.setTextSize(ScreenUtil.sp2px(orderTextSize));
canvas.drawText(orderNum,getWidth()/2-textPaint.measureText(orderNum),getHeight()/2-ScreenUtil.dip2px(totalTextSize)/3,textPaint);
textPaint.setTextSize(ScreenUtil.sp2px(totalTextSize));
textPaint.setColor(Color.parseColor("#bbbbbb"));
canvas.drawText("/"+totalNum,getWidth()/2,getHeight()/2-ScreenUtil.dip2px(totalTextSize)/3,textPaint);
/*
* 中间线
*/
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setStrokeWidth(ScreenUtil.dip2px(1));
mPaint.setColor(Color.parseColor("#cccccc"));
int radius = Math.min(getWidth(),getHeight())/2;
canvas.drawLine((getWidth()/2-radius)+ringWidth*2,getHeight()/2,getWidth()/2+radius-ringWidth*2,getHeight()/2,mPaint);
/*
* 下半部分
*/
canvas.save();
textPaint.setTextSize(ScreenUtil.sp2px(nameTextSize));
textPaint.setTypeface(Typeface.DEFAULT);
textPaint.setColor(Color.parseColor("#6f6f6f"));
canvas.translate(getWidth()/2-getWidth()/4,getHeight()/2);
StaticLayout staticLayout = new StaticLayout(workName,textPaint,getWidth()/2, Layout.Alignment.ALIGN_CENTER,1.0f,0f,true);
staticLayout.draw(canvas);
canvas.restore();
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
drawBlackCircle(canvas);//绘制黑圆圈
drawRing(canvas);
drawLittePoint(canvas);
drawOrderNumberText(canvas);
}
public OrderCircleView(Context context) {
this(context,null);
}
public OrderCircleView(Context context, @Nullable AttributeSet attrs) {
this(context, attrs,0);
}
public OrderCircleView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
initView();
}
private Paint mPaint;
private TextPaint textPaint;
private void initView(){
mPaint = new Paint();
mPaint.setAntiAlias(true);
textPaint = new TextPaint();
textPaint.setAntiAlias(true);
textPaint.setColor(Color.parseColor("#535353"));
textPaint.setTextSize(ScreenUtil.dip2px(10));
}
}