ColorUtils.java

package cn.rongcloud.im.ui.widget.switchbutton;

import android.content.res.ColorStateList;

/**
 * Generate thumb and background color state list use tintColor
 * Created by kyle on 15/11/4.
 */
public class ColorUtils {
    private static final int ENABLE_ATTR = android.R.attr.state_enabled;
    private static final int CHECKED_ATTR = android.R.attr.state_checked;
    private static final int PRESSED_ATTR = android.R.attr.state_pressed;

    public static ColorStateList generateThumbColorWithTintColor(final int tintColor) {
        int[][] states = new int[][] {
            { -ENABLE_ATTR, CHECKED_ATTR},
            { -ENABLE_ATTR},
            {PRESSED_ATTR, -CHECKED_ATTR},
            {PRESSED_ATTR, CHECKED_ATTR},
            {CHECKED_ATTR},
            { -CHECKED_ATTR}
        };

        int[] colors = new int[] {
            tintColor - 0xAA000000,
            0xFFBABABA,
            tintColor - 0x99000000,
            tintColor - 0x99000000,
            tintColor | 0xFF000000,
            0xFFEEEEEE
        };
        return new ColorStateList(states, colors);
    }

    public static ColorStateList generateBackColorWithTintColor(final int tintColor) {
        int[][] states = new int[][] {
            { -ENABLE_ATTR, CHECKED_ATTR},
            { -ENABLE_ATTR},
            {CHECKED_ATTR, PRESSED_ATTR},
            { -CHECKED_ATTR, PRESSED_ATTR},
            {CHECKED_ATTR},
            { -CHECKED_ATTR}
        };

        int[] colors = new int[] {
            tintColor - 0xE1000000,
            0x10000000,
            tintColor - 0xD0000000,
            0x20000000,
            tintColor - 0xD0000000,
            0x20000000
        };
        return new ColorStateList(states, colors);
    }
}