使用Spinner Android对自定义Listview项进行排序

我尝试使用微调框选择排序方式时，按字母顺序和数字顺序对列表视图中的项目进行排序。基本上，无论何时用户选择微调器项目，列表视图都将根据他们选择的选项进行排序。由于这是带有自定义适配器的自定义列表视图，因此我一直在寻找一种方法来对它进行正确排序时遇到一些问题。如果有人可以给我一些建议，我将不胜感激。下面是我现在要处理显示列表视图的主类的内容：

    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_repetition_progress);

    /**
     * The database used to pull all exercises for this workout routine
     */
    DatabaseHandler db = new DatabaseHandler(this);
    SQLiteDatabase database = db.getReadableDatabase();

    context = this;


    /**
     * Get all exercises from Triceps and Chest workout and put in arraylist
     */
    ListView workoutExerciseList = (ListView)findViewById(R.id.listView7);
    final List<String> arrayRepetitionProgress = new ArrayList<String>();
    exListAdapter = new ArrayAdapter<String>(this,
           android.R.layout.simple_spinner_item, arrayRepetitionProgress);
    workoutExerciseList.setAdapter(exListAdapter);

    //Holds all the available exercises
    final List<WorkoutTracker> exerciseList = db.getRepProgress(context, database);

    /**
     * Populates the listView with each exercise for this workout routine. This includes the
     * each exercise name, the distance, the time of the workout, and any
     * comments included.
     */
    repProgressList = new ArrayList<RepetitionProgress.ListViewItem>();
    for(int i = 0; i<exerciseList.size(); i++) {
        final int j = i;
        repProgressList.add(new ListViewItem()
        {{
                REPETITIONS = exerciseList.get(j).getReps();
                WEIGHT = exerciseList.get(j).getWeight();
                COMMENT = exerciseList.get(j).getComment();
                EXERCISE_NAME = exerciseList.get(j).getExerciseName();
                DATE = exerciseList.get(j).getDate();
            }});


    }
    final RepetitionProgressAdapter adapter = new RepetitionProgressAdapter(this, repProgressList);
    workoutExerciseList.setAdapter(adapter);


    //Spinner used to select sorting method
    SortOptions = (Spinner)findViewById(R.id.sortOption);
    SortOptions.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {

            //If the Sort by exercise name option is chosen
            if(SortOptions.getSelectedItem().toString().equals("Sort by exercise name")) {
                Toast.makeText(context.getApplicationContext(), "Sort by exercise name", Toast.LENGTH_LONG).show();
                exListAdapter.sort(new Comparator<String>() {
                    @Override
                    public int compare(String lhs, String rhs) {
                        return lhs.compareTo(rhs);
                    }
                });
                //Refresh the listview
                adapter.notifyDataSetChanged();
                exListAdapter.notifyDataSetChanged();
            }


            //If the Sort by date option is chosen
            if(SortOptions.getSelectedItem().toString().equals("Sort by date")) {
                Toast.makeText(context.getApplicationContext(), "Sort by date", Toast.LENGTH_LONG).show();
            }

            //If the Sort by number of repetitions option is chosen
            if(SortOptions.getSelectedItem().toString().equals("Sort by number of repetitions")) {
                Toast.makeText(context.getApplicationContext(), "Sort by number of repetitions", Toast.LENGTH_LONG).show();
            }

            //If the Sort by weight option is chosen
            if(SortOptions.getSelectedItem().toString().equals("Sort by weight")) {
                Toast.makeText(context.getApplicationContext(), "Sort by weight", Toast.LENGTH_LONG).show();
            }
        }

        @Override
        public void onNothingSelected(AdapterView<?> parent) {

        }
    });


    Back = (Button)findViewById(R.id.back);
    Back.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            finish();
        }
    });
}

以下是我的自定义适配器类的一部分，该部分处理设置在每个listview项中看到的属性：

public View getView(final int position, View convertView, ViewGroup parent) {
    // TODO Auto-generated method stub

    ListViewItem item = items.get(position);
    View vi=convertView;

    if(convertView==null)
        vi = inflater.inflate(R.layout.rep_progress_view, null);


    TextView exerciseName = (TextView)vi.findViewById(R.id.FullProgress);
    TextView exerciseComment = (TextView)vi.findViewById(R.id.Comment);


    exerciseName.setText(item.EXERCISE_NAME + "    Date: " + item.DATE + "    Reps: " + item.REPETITIONS + "    Weight: " +item.WEIGHT + " Pounds    ");
    exerciseComment.setText(item.COMMENT);

    return vi;
}