Android绘图API自定义View（三）

运行效果：

自定义View类：CustomViewDraw.java

public class CustomViewDraw extends View {    private Paint paint;    private float degrees=0;    public CustomViewDraw(Context context) {        super(context);        initProperties();    }    public CustomViewDraw(Context context,AttributeSet attrs) {        super(context, attrs);        initProperties();    }    public CustomViewDraw(Context context,AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);        initProperties();    }    private void initProperties(){//初始化数据        paint=new Paint();        paint.setColor(Color.RED);    }    @Override    public void draw(Canvas canvas) {        super.draw(canvas);        canvas.save();//保存当前画布状态        canvas.translate(400,400);//view的位置        canvas.rotate(degrees,50,50);//视图旋转        canvas.drawRect(0,0,100,100,paint);//绘制的图形        degrees++;        canvas.restore();//恢复画布状态        invalidate();//视图重绘，结束视图    }}

View视图布局：

<?xml version="1.0" encoding="utf-8"?>

参考博客：

https://www.jianshu.com/p/afa06f716ca6

https://www.jianshu.com/p/f69873371763

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