java在表格布局中按行排序表格？

Question

我正在使用TableLayout在Android中显示一个表。我想在点击按钮时对表格进行排序。这就是我试过的。但它会对每一列进行排序。我想要的是基于列对行进行排序

private View.OnClickListener msg = new View.OnClickListener() {
 public void onClick(View v) {

  ArrayList < String > sortobj = new ArrayList < String > ();
  ArrayList < String > sortobj1 = new ArrayList < String > ();
  ArrayList < String > sortobj2 = new ArrayList < String > ();
  ArrayList < String > sortobj3 = new ArrayList < String > ();

  for (int i = 0; i <= listobj.size(); i++) {

   sortobj.add(listobj.get(i).get(TAG_Name));
   sortobj1.add(listobj.get(i).get(TAG_Abbr));
   sortobj2.add(listobj.get(i).get(TAG_Area));
   sortobj3.add(listobj.get(i).get(TAG_Capital));

   if (listobj.get(i).get(TAG_Name).equals("West Bengal"))

    break;
  }

  Collections.sort(sortobj, Collections.reverseOrder());
  Collections.sort(sortobj1, Collections.reverseOrder());
  Collections.sort(sortobj2, Collections.reverseOrder());
  Collections.sort(sortobj3, Collections.reverseOrder());

  table = (TableLayout) findViewById(R.id.mytable);

  Log.e(TAG, "Sorted in reverse order................ :");

  for (int i = 0; i < sortobj.size(); i++) {
   TableRow row = new TableRow(getApplicationContext());

   TextView tv0 = new TextView(getApplicationContext());
   TextView tv1 = new TextView(getApplicationContext());
   TextView tv2 = new TextView(getApplicationContext());
   TextView tv3 = new TextView(getApplicationContext());
   row.setLayoutParams(new TableRow.LayoutParams(
    TableRow.LayoutParams.WRAP_CONTENT,
    TableRow.LayoutParams.MATCH_PARENT));

   tv0.setText(sortobj.get(i));
   tv1.setText(sortobj1.get(i));
   tv2.setText(sortobj2.get(i));
   tv3.setText(sortobj3.get(i));

   row.addView(tv0);
   row.addView(tv1);
   row.addView(tv2);
   row.addView(tv3);

   table.addView(row, new TableLayout.LayoutParams(
    TableLayout.LayoutParams.WRAP_CONTENT,
    TableLayout.LayoutParams.MATCH_PARENT));
  }
 }
};

Answer 1

问题1:

每一列都在被排序

解决方案：

排序行而不是单元格
插入这个类并像这样创建ArrayList List < Row > rows= new ArrayList < Row > ();

class Row implements Comparable<Row>{
    String Abb;
    String Area;
    String Capital;
    
    public String getName() {
        return Name;
    }

    public void setName(String name) {
        Name = name;
    }

    String Name;

    public String getAbb() {
        return Abb;
    }

    public void setAbb(String abb) {
        Abb = abb;
    }

    public String getArea() {
        return Area;
    }

    public void setArea(String area) {
        Area = area;
    }

    public String getCapital() {
        return Capital;
    }

    public void setCapital(String capital) {
        Capital = capital;
    }

    
    @Override
    public int compareTo(@NonNull Row o) {
        return this.Name.compareTo(o.Name);
    }
}

现在您可以通过以下方式访问每一列：String Name = rows.get(index).getName();
rows.get(index).setName("Kerala");

然后要排序，只需将rows.sort();

问题2:

行正在附加到现有表

解决方案：

在添加已排序的行之前，在循环中使用removeView（）删除所有行