为什么适配器无法显示颜色数组？

Question

我有一个适配器，我传递数组的颜色和文本数组>它不显示颜色数组的任何项目？

public class HoursFromToAdapter extends BaseAdapter{ 
     private Context context; 
     private String[] mHoursRenge; 
     private int[] mColors; 

     private TextView mHoursRangeTxt; 
     private CardView mCardView; 

     public HoursFromToAdapter(Context context, String[] hoursRenge , int[] colors) { 
      this.context=context; 
      this.mHoursRenge=hoursRenge; 
      this.mColors=colors; 
     } 
     @Override 
     public int getCount() { 
      /*return number of elements inside this array*/ 
      return mHoursRenge.length; 
     } 
     @Override 
     public Object getItem(int position) { 
      /*return the item at posion -position-*/ 
      return null; 
     } 

     @Override 
     public long getItemId(int position) { 
      /*return the id of the row which in this case the index of the array*/ 
      return 0; 
     } 


     @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP) 
     @Override 
     public View getView(int position, View convertView, ViewGroup parent) { 
      LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      inflater.inflate(R.layout.day_item,parent,false); 
      View v; 

      LinearLayout ln; 
      if(convertView == null) { 
       v = new View(context); 
       v = inflater.inflate(R.layout.day_item, null); 
       ln=(LinearLayout)v.findViewById(R.id.card_containner); 

       mHoursRangeTxt= (TextView) v.findViewById(R.id.text_hours_from_to); 
       mHoursRangeTxt.setText(mHoursRenge[position]); 

       mCardView=(CardView)v.findViewById(R.id.card_day_item); 
       mCardView.setCardBackgroundColor(mColors[position]); 


      }else { 
       v = convertView; 
      } 


      return v; 
     } 
    } 

时，我的色彩传递数组从其它类岂不显示，但显示的文本的阵列以及

String hoursArray[]={"7 am : 8 am" ,"8 am : 9 am","9 am : 10 am","10 am : 11 am","11 am : 12 pm","12 pm : 1 pm","1 pm : 2 pm","2 pm : 3 pm"}; 
     int colorsArray[]={R.color.colorOrange,R.color.colorRed,R.color.colorOrange,R.color.colorOrange,R.color.colorRed,R.color.colorOrange,R.color.colorRed,R.color.colorOrange}; 
     mHoursFromToAdapter=new HoursFromToAdapter(HomeActivity.this,hoursArray,colorsArray); 

什么是不能显示对cardView颜色阵列的问题？

Answer 1

setCardBackgroundColor预计颜色，而不是resId呈现颜色。

变化

mCardView.setCardBackgroundColor(mColors[position]) 

与

mCardView.setCardBackgroundColor(ContextCompat.getColor(context, mColors[position])) 

我也动

mHoursRangeTxt= (TextView) v.findViewById(R.id.text_hours_from_to); 
mHoursRangeTxt.setText(mHoursRenge[position]); 

mCardView=(CardView)v.findViewById(R.id.card_day_item); 
mCardView.setCardBackgroundColor(mColors[position]); 

的if else条款外，实施持有者模式