BallGridPulseIndicator.java 文件源码

@Override
public void draw(Canvas canvas, Paint paint) {
    float circleSpacing=4;
    float radius=(getWidth()-circleSpacing*4)/6;
    float x = getWidth()/ 2-(radius*2+circleSpacing);
    float y = getWidth()/ 2-(radius*2+circleSpacing);

    for (int i = 0; i < 3; i++) {
        for (int j = 0; j < 3; j++) {
            canvas.save();
            float translateX=x+(radius*2)*j+circleSpacing*j;
            float translateY=y+(radius*2)*i+circleSpacing*i;
            canvas.translate(translateX, translateY);
            canvas.scale(scaleFloats[3 * i + j], scaleFloats[3 * i + j]);
            paint.setAlpha(alphas[3 * i + j]);
            canvas.drawCircle(0, 0, radius, paint);
            canvas.restore();
        }
    }
}