标记为从未使用过的 Android 类

Question

I have a really easy class (ColorTool.java):

import android.graphics.Color;

public class ColorTool {

    public boolean closeMatch (int color1, int color2, int tolerance) {
        if (Math.abs (Color.red (color1) - Color.red (color2)) > tolerance ) return false;
        if (Math.abs (Color.green (color1) - Color.green (color2)) > tolerance ) return false;
        return Math.abs(Color.blue(color1) - Color.blue(color2)) <= tolerance;
    }
}

And I'm using it in the Main class:

private final ColorTool ct = new ColorTool ();

And using it:

int tolerance = 25;
        switch (action) {
            case MotionEvent.ACTION_DOWN :
                break;
            case MotionEvent.ACTION_UP :
                v.performClick();
                int touchColor = getHotspotColor (R.id.imgMainAreas, evX, evY);
                if(x == 1){
                    if (ct.closeMatch (Color.BLUE, touchColor, tolerance)){
                        x = 2;
                        animStart();
                    }
                }
...

Anyway, the Class is marked as never used, the function within too. (closeMatch) When I analyze the whole code of the App this happens too. Maybe I forgive something? I updated to latest Android Studio version.

Answer 1

在不同的地方可能有两个同名的类，而 Main 使用另一个。