1 package com.android.deskclock; 2 3 import android.annotation.TargetApi; 4 import android.content.Context; 5 import android.content.res.TypedArray; 6 import android.graphics.Color; 7 import android.graphics.drawable.Drawable; 8 import android.os.Build; 9 import android.util.AttributeSet; 10 import android.widget.NumberPicker; 11 12 import java.lang.reflect.Field; 13 14 /** 15 * Subclass of NumberPicker that allows customizing divider color. 16 */ 17 public class NumberPickerCompat extends NumberPicker { 18 19 private static Field sSelectionDivider; 20 private static boolean sTrySelectionDivider = true; 21 22 public NumberPickerCompat(Context context) { 23 this(context, null /* attrs */); 24 } 25 26 public NumberPickerCompat(Context context, AttributeSet attrs) { 27 super(context, attrs); 28 tintSelectionDivider(context); 29 } 30 31 public NumberPickerCompat(Context context, AttributeSet attrs, int defStyleAttr) { 32 super(context, attrs, defStyleAttr); 33 tintSelectionDivider(context); 34 } 35 36 @TargetApi(Build.VERSION_CODES.LOLLIPOP) 37 private void tintSelectionDivider(Context context) { 38 if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP 39 || Build.VERSION.SDK_INT > Build.VERSION_CODES.M) { 40 // Accent color in KK will stay system blue, so leave divider color matching. 41 // The divider is correctly tinted to controlColorNormal in M. 42 return; 43 } 44 45 if (sTrySelectionDivider) { 46 final TypedArray a = context.obtainStyledAttributes( 47 new int[] { android.R.attr.colorControlNormal }); 48 // White is default color if colorControlNormal is not defined. 49 final int color = a.getColor(0, Color.WHITE); 50 a.recycle(); 51 52 try { 53 if (sSelectionDivider == null) { 54 sSelectionDivider = NumberPicker.class.getDeclaredField("mSelectionDivider"); 55 sSelectionDivider.setAccessible(true); 56 } 57 final Drawable selectionDivider = (Drawable) sSelectionDivider.get(this); 58 if (selectionDivider != null) { 59 // setTint is API21+, but this will only be called in API21 60 selectionDivider.setTint(color); 61 } 62 } catch (NoSuchFieldException | IllegalArgumentException | IllegalAccessException e) { 63 LogUtils.e("Unable to set selection divider", e); 64 sTrySelectionDivider = false; 65 } 66 } 67 } 68 69 } 70
