Question

我正在尝试根据内容来绘制行ListView。我有一个int数组 - int[] State= new int[] {1,1,1,1,1,1,0,0,0,0}; 我需要根据数组中的值绘制红色或绿色的每一行。绿色标志为0，红色标志为1。例如：int[] State= new int[] {1,1,1,1,1,1,0,0,0,0};

编号为0-5的行必须为红色，5-9必须为红色。

我有适配器：

public class SpecialAdapter extends SimpleAdapter {
    private int[] colors = new int[] {Color.RED, Color.GREEN };

    private int[] State= new int[] {1,1,1,1,1,1,0,0,0,0};


    public SpecialAdapter(Context context, List<HashMap<String, String>> items, int resource, String[] from, int[] to) {
        super(context, items, resource, from, to);

    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
      View view = super.getView(position, convertView, parent);
      ///It makes my list red-green, like zebra, but I need to paint depending on flags in State
      int colorPos = position % colors.length;      
      view.setBackgroundColor(colors[colorPos]);
      return view;
    }
}

在主要活动中：

SpecialAdapter adapter = new SpecialAdapter(getBaseContext(), myArrList, R.layout.list_item, 
                        new String[] {"State", "Name"},

                        new int[] {R.id.text1, R.id.text2});
                 ListView lvMain = (ListView)findViewById(R.id.listView1);        
                 lvMain.setAdapter(adapter);

Answer 1

您应该更改getView方法。 int colorPos = position % colors.length;返回“0”或“1”。所以colors[colorPos]按顺序返回红色和绿色。请试试这个;

    public class SpecialAdapter extends SimpleAdapter {
    private int[] colors = new int[] {Color.RED, Color.GREEN };

    private int[] State= new int[] {1,1,1,1,1,1,0,0,0,0};


    public SpecialAdapter(Context context, List<HashMap<String, String>> items, int resource, String[] from, int[] to) {
        super(context, items, resource, from, to);

    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
      View view = super.getView(position, convertView, parent); 

view.setBackgroundColor(colors[State[position]]);

      return view;
    }
}

如何根据内容绘制ListView

1 个答案: