如何使这条线水平？

Question

for (int x = 0; x < canvas.getHeight(); x += LINE_SPACING) {
canvas.drawLine(0, 0, 0, canvas.getWidth(), paint);

此代码生成一条垂直线。我怎样才能使这个水平

Answer 1

你有x和y颠倒的概念：

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

此外，还不清楚为什么你在循环中有这个。如果你想绘制一堆水平线，它应该是这样的：

for (int y = 0; y < canvas.getHeight(); y += LINE_SPACING) {
    canvas.drawLine(0, y, canvas.getWidth(), y, paint);
}

Answer 2

for (int y = 0; y < canvas.getWidth(); y += LINE_SPACING) {
canvas.drawLine(0, 0, canvas.getHeight(), 0, paint);