24-bit color and 32-bit color contrast

1.24-bit color and 32-bit color contrast

rgb:24 bit color, (R,G,B) 3 x 16 binary numberargb:32 bit color, (A,R,G,B) 4 x 16 binary numberA value: opacityR value: Red scaleg value: Green ratiob Value: Blue scale32-bit code is best used in ps:android development How to make the control background transparent in 2.Android developmentandroid:background= "#01000000" #01000000 "01" refers to the degree of transparency of the background, this value can only set 01 and above the value, cannot be set to 00, and cannot be set to full transparency, but set to 01 in fact and transparent effect is also very close, the naked eye almost can not see the difference. This method also has no effect on other controls.

24-bit color and 32-bit color contrast