为什么我不能创建新颜色

Question

When I try to create a color using the RGB values I get a message saying "Color() in Color cannot be applied to:" and then its says "Expected parameter:" and "Actual Arguments:"

import android.graphics.Color;

Color myColor = new Color (0,0,0); 

When I try to run the program it says:

error: constructor Color in class Color cannot be applied to given types;
required: no arguments
found: int,int,int
reason: actual and formal argument lists differ in length

Answer 1

I'm going to say it's

//Color black
Color myColor = Color.valueOf(0.0f,0.0f,0.0f);

according to @esqew's documentation . Remember that values are in the range [0,1], not [0,255]

Alternatively, as @DaveNewton suggested, we can use either of the following:

//Color white
Color myColor = Color.valueOf(Color.rgb(1.0f,1.0f,1.0f));//floats, [0,1]
Color myColor = Color.valueOf(Color.rgb(255,255,255));//ints, [0,255]

These methods are documented here , here , and here .