設置numberpicker、DatePicker中間分割線顏色

import java.lang.reflect.Field;
import android.annotation.SuppressLint;
import android.content.res.Resources;
import android.content.res.Resources.NotFoundException;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.widget.DatePicker;
import android.widget.LinearLayout;
import android.widget.NumberPicker;

/**
 * 設置numberpicker ，DatePicker中間分割線顏色
 *
 */
public class HalvingLineUtils {
    /**
     * 設置numberpicker分割線顏色
     * color 爲空默認爲藍色
     * @param numberPicker
     * @param color 顏色  “#000000”
     */
    @SuppressLint("NewApi")
    public static void setNumberPickerDividerColor(NumberPicker numberPicker,String color) {
        if(color==null || color.equals("")){
            color="#0000FF";
        }
        NumberPicker picker = numberPicker;
        Field[] pickerFields = NumberPicker.class.getDeclaredFields();
        for (Field pf : pickerFields) {
            if (pf.getName().equals("mSelectionDivider")) {
                pf.setAccessible(true);
                try {
                    //設置分割線的顏色值
                    pf.set(picker, new ColorDrawable(Color.parseColor(color)));
                } catch (IllegalArgumentException e) {
                    e.printStackTrace();
                } catch (Resources.NotFoundException e) {
                    e.printStackTrace();
                } catch (IllegalAccessException e) {
                    e.printStackTrace();
                }
                break;
            }
        }
    }

    /**
     * 設置時間選擇器DatePicker的分割線顏色
     *  color 爲空默認爲藍色
     * @param datePicker
     * @param color 顏色 “#000000”
     */
    @SuppressLint("NewApi")
    public static void setDatePickerDividerColor(DatePicker datePicker,String color){
        if(color==null || color.equals("")){
            color="#0000FF";
        }
        // Divider changing:

        // 獲取 mSpinners
        LinearLayout llFirst = (LinearLayout) datePicker.getChildAt(0);

        // 獲取 NumberPicker 
        LinearLayout mSpinners = (LinearLayout) llFirst.getChildAt(0);
        for (int i = 0; i < mSpinners.getChildCount(); i++) {
            NumberPicker picker = (NumberPicker) mSpinners.getChildAt(i); 

            Field[] pickerFields = NumberPicker.class.getDeclaredFields();
            for (Field pf : pickerFields) {
                if (pf.getName().equals("mSelectionDivider")) {
                    pf.setAccessible(true);
                    try {
                        pf.set(picker, new ColorDrawable(Color.parseColor(color)));
                    } catch (IllegalArgumentException e) {
                        e.printStackTrace();
                    } catch (NotFoundException e) {
                        e.printStackTrace();
                    } catch (IllegalAccessException e) {
                        e.printStackTrace();
                    }
                    break;
                }
            }
        }
    }
}