Android--LinearGradient线性渐变

Paint paint = new Paint();
		LinearGradient gradient = new LinearGradient(0, 0, 100, 100, Color.RED, Color.YELLOW, Shader.TileMode.MIRROR);
		paint.setShader(gradient);
		canvas.drawRect(0, 0, 100, 100, paint);
		canvas.drawText("This is the shader", 100, 100, paint);