java - 如何为每个 GridView 项目赋予不同的背景颜色？

Question

我有一个 GridView 作为我的 MainActivity，它包含 11 个带有可点击监听器的项目。每个单元格都由一个 ImageView 和一个 TextView 组成。我想为这 11 个项目中的每一个提供不同的背景颜色。

这是我的项目数组

public static String [] prgmNameList={"TownHall 1","TownHall 2",
            "TownHall 3","TownHall 4","TownHall 5 ","TownHall 6",
            "TownHall 7","TownHall 8","TownHall 9","TownHall 10","TownHall 11"};
    public static int [] prgmImages={R.drawable.town_hall1,
            R.drawable.town_hall2,R.drawable.town_hall3,
            R.drawable.town_hall4,R.drawable.town_hall5,
            R.drawable.town_hall6,R.drawable.town_hall7,
            R.drawable.town_hall8,R.drawable.town_hall9,
    R.drawable.town_hall10, R.drawable.town_hall11};

这是我的 GridView Adapter 代码

public class CustomAdapterMainActivity extends BaseAdapter {

    String [] result;
    Context context;
    int [] imageId;
    private static LayoutInflater inflater=null;
    public CustomAdapterMainActivity(MainActivity mainActivity, String[] prgmNameList, int[] prgmImages) {
        // TODO Auto-generated constructor stub
        result=prgmNameList;
        context=mainActivity;
        imageId=prgmImages;
        inflater = ( LayoutInflater )context.
                getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    }

    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return result.length;
    }

    @Override
    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return position;
    }

    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return position;
    }

    public class Holder
    {
        TextView tv;
        ImageView img;
    }
    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
        Holder holder=new Holder();
        View rowView;
        ImageView img;

        rowView = inflater.inflate(R.layout.each_item_gridview, null);
        holder.tv=(TextView) rowView.findViewById(R.id.textView1);
        holder.img=(ImageView) rowView.findViewById(R.id.imageView1);

        holder.tv.setText(result[position]);
        holder.img.setImageResource(imageId[position]);



        rowView.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Toast.makeText(context, "You Clicked " + result[position], Toast.LENGTH_LONG).show();
                Class<? extends Activity> activityToStart = null;
                switch (position) {

                    case 0:
                        activityToStart = TownHallElevenActivity.class;
                        break;

                    case 1:
                        activityToStart = TownHallElevenActivity.class;
                        break;

                    case 2:
                        activityToStart = TownHallElevenActivity.class;
                        break;

                    case 3:
                        activityToStart = TownHallElevenActivity.class;
                        break;

                    case 4:
                        activityToStart = TownHallElevenActivity.class;
                        break;

                    case 5:
                        activityToStart = TownHallElevenActivity.class;
                        break;

                    case 6:
                        activityToStart = TownHallElevenActivity.class;
                        break;

                    case 7:
                        activityToStart = TownHallElevenActivity.class;
                        break;

                    case 8:
                        activityToStart = TownHallNineActivity.class;
                        break;

                    case 9:
                        activityToStart = TownHallTenActivity.class;
                        break;

                    case 10:
                        activityToStart = TownHallElevenActivity.class;

                        break;
                    default:
                        break;

                }
                Intent i = new Intent(context.getApplicationContext(), activityToStart);
                i.putExtra("classFrom", activityToStart.toString());
               context.startActivity(i);
            }
        });

        return rowView;
    }

}

Answer 1

将此添加到您的 getView() 中:

rowView.setBackgroundColor(colors[position]));

然后像这样添加一组颜色:

public static int [] colors { 0x225522, 0xff00000, .... }