自定义雷达统计控件

因为刚刚学习了Android画布操作，为了巩固一下，写了一个自定义雷达控件这个控件只暴露了一个一个最基本的接口，设置数据，对坐标轴数量，单位长度等统计要素都没考虑，如果以后有时间可能会添加进去。先上个截图

截图

上个核心代码

packagehuiyan.com.costomview_learn2;

importandroid.content.Context;

importandroid.graphics.Canvas;

importandroid.graphics.Color;

importandroid.graphics.Paint;

importandroid.graphics.Path;

importandroid.support.annotation.Nullable;

importandroid.util.AttributeSet;

importandroid.view.View;

importjava.util.ArrayList;

/**

* Created by lenovo on 2017/7/5.

*/

publicclassMyViewextendsView{

privatePaintmPaint;//绘制放射线的画笔

privatePainthexPaint;//绘制六边形的画笔

privatePaintpoPaint;//绘制数据的画笔

privateArrayListdatas=newArrayList<>();

publicMyView(Contextcontext) {

super(context);

init();

}

publicMyView(Contextcontext, @NullableAttributeSetattrs) {

super(context,attrs);

init();

}

publicMyView(Contextcontext, @NullableAttributeSetattrs,intdefStyleAttr) {

super(context,attrs,defStyleAttr);

init();

}

publicMyView(Contextcontext, @NullableAttributeSetattrs,intdefStyleAttr,intdefStyleRes) {

super(context,attrs,defStyleAttr,defStyleRes);

init();

}

publicvoidinit() {

/*

*对画笔进行初始化，进行各种设置

*/

mPaint=newPaint();

mPaint.setStyle(Paint.Style.STROKE);

mPaint.setStrokeWidth(5);

mPaint.setColor(Color.BLUE);

hexPaint=newPaint();

hexPaint.setStyle(Paint.Style.STROKE);

hexPaint.setColor(Color.GRAY);

poPaint=newPaint();

poPaint.setStyle(Paint.Style.FILL);

poPaint.setColor(getResources().getColor(R.color.red));

poPaint.setStrokeWidth(5);

poPaint.setAlpha(100);

}

@Override

protectedvoidonDraw(Canvascanvas) {

/*

*画图

*/

floatwidth=getWidth();

floatheight=getHeight();

super.onDraw(canvas);

datas.add((float)300);

datas.add((float)300);

datas.add((float)300);

datas.add((float)300);

datas.add((float)300);

datas.add((float)300);

canvas.translate(width/2,height/2);

PathLpath=newPath();

drawRad(Lpath,canvas,mPaint);

canvas.rotate(-120);//坐标系复位

canvas.scale(1,-1);//坐标系复位

//drawHex(canvas, hexPaint, 300);

for(inti=0;i<7;i++) {

drawHex(canvas,hexPaint,i*50);

canvas.rotate(-30);//坐标系复位

canvas.translate(-i*50,0);//坐标系复位

canvas.rotate(60);//坐标系复位

}

for(inti=0;i<5;i++) {

canvas.drawLine((float) (datas.get(i)*Math.cos(i*Math.PI/3)), (float) (datas.get(i)*Math.sin(i*Math.PI/3))

, (float) (datas.get(i+1)*Math.cos((i+1)*Math.PI/3)), (float) (datas.get(i+1)*Math.sin((i+1)*Math.PI/3)),poPaint);

}

canvas.drawLine((float) (datas.get(5)*Math.cos(-Math.PI/3)), (float) (datas.get(5)*Math.sin(-Math.PI/3))

, (float) (datas.get(0)*Math.cos(6*Math.PI/3)), (float) (datas.get(0)*Math.sin(6*Math.PI/3)),poPaint);

}

publicvoidsetDatas(ArrayListdatas) {

/*

*设置数据进行重绘

*/

this.datas=datas;

invalidate();

}

privatevoiddrawHex(Canvascanvas,Paintpaint,intx) {

canvas.translate(x,0);

canvas.rotate(30);

canvas.drawLine(0,0,0,x,paint);

for(inti=0;i<5;i++) {

canvas.translate(0,x);

canvas.rotate(60);

canvas.drawLine(0,0,0,x,paint);

}

}

privatevoiddrawRad(Pathpath,Canvascanvas,Paintpaint) {

path.moveTo(-300,0);

path.lineTo(300,0);

canvas.drawPath(path,paint);

canvas.rotate(60);

canvas.drawPath(path,paint);

canvas.rotate(60);

canvas.drawPath(path,paint);

}

}