for (int j = 0; j < buffer.size(); j += 4) { if (!mViewPortHandler.isInBoundsLeft(buffer.buffer[j + 2])) continue; if (!mViewPortHandler.isInBoundsRight(buffer.buffer[j])) break; //设置柱状图的颜色为渐变色 LinearGradient linearGradient = new LinearGradient(0, 0, 0, 2000,Color.GREEN, Color.WHITE, Shader.TileMode.CLAMP); mRenderPaint.setShader(linearGradient);//目标Paint即为绘制柱的Paint c.drawRect(buffer.buffer[j], buffer.buffer[j + 1], buffer.buffer[j + 2], buffer.buffer[j + 3], mRenderPaint); if (drawBorder) { c.drawRect(buffer.buffer[j], buffer.buffer[j + 1], buffer.buffer[j + 2], buffer.buffer[j + 3], mBarBorderPaint); } }
效果图：