Android drawLine 画虚线

drawLine 是画线的 ，有时候想画虚线可以使用 PathEffect 代码如下

 Paint linePaint = new Paint();
        linePaint.reset();
        linePaint.setAntiAlias(true);
        linePaint.setStyle(Paint.Style.STROKE);
        linePaint.setStrokeWidth(2);
        linePaint.setColor(Color.RED);
        PathEffect pathEffect = new DashPathEffect(new float[]{5, 5, 5, 5}, 2);
        linePaint.setPathEffect(pathEffect);
canvas.drawLine(0, 0, 100, 100, linePaint);

可能由于版本的问题有时候 ，使用这个方法还是实线，

可以把drawLine 改为drawPath 来画虚线

代码如下

 Paint linePaint = new Paint();
        linePaint.reset();
        linePaint.setAntiAlias(true);
        linePaint.setStyle(Paint.Style.STROKE);
        linePaint.setStrokeWidth(2);
        linePaint.setColor(Color.RED);
        PathEffect pathEffect = new DashPathEffect(new float[]{5, 5, 5, 5}, 2);
        linePaint.setPathEffect(pathEffect);
        Path linePath = new Path();
        linePath.moveTo(120, 180);
        linePath.lineTo(360, 360);
        canvas.drawPath(linePath, linePaint);