ax1, ay1, ar, paintFull);
canvas.drawText("0", ax1 - getTextW() * 3, ay1 + getTextH() / 2, textPaint)...;
float ax2 = -range;
float ay2 = 0;
canvas.drawCircle(ax2, ay2, ar, paintFull);
canvas.drawText("50"...float ax4 = 0;
float ay4 = -range;
canvas.drawCircle(ax4, ay4, ar, paintFull);
canvas.drawText("150",...range;
float ay6 = 0;
canvas.drawCircle(ax6, ay6, ar, paintFull);
canvas.drawText("300", ax6 + getTextW...Math.sin((airValue * 0.45 + 45) * Math.PI / 180));
} else if (airValue 300 && airValue <= 500) {//此处有问题