关闭对话框后如何刷新listView？

Question

我创建了一个打开对话框的布局,进入对话框后,用户选择ok/cancel.我想刷新listView以重新查询数据

这是我打开对话框的布局:

 button.setOnClickListener(new OnClickListener() {
            public void onClick(View arg0) { 
                Intent myIntent = new Intent(SchoolActivity.this, InsertSchool.class);
                update();
                startActivity(myIntent);
                updateList();
            }
        });
        update();
        cursor.requery();
        String[] from = new String[]{Database.KEY_ID2, Database.KSCHOOL, Database.KSCHOOLCODE};
        int[] to = new int[]{R.id.rid, R.id.rt1, R.id.rt2};

        cursorAdapter =
            new SimpleCursorAdapter(this, R.layout.row_school, cursor, from, to);
        listContent.setAdapter(cursorAdapter);

单击该按钮后,我想刷新listView.这是对话框(我认为刷新将在ok和cancel按钮上完成).

            ib.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent intent=new Intent(InsertSchool.this, SchoolActivity.class);
                startActivity(intent);
            }
        });
        update();
        mySQLiteAdapter = new Database(this);
        mySQLiteAdapter.openToWrite();
        cursor = mySQLiteAdapter.queueSchoolAll();

        ib1.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                // TODO Auto-generated method stub

                String data1 = ie1.getText().toString();
                String data2 = ie2.getText().toString();
                mySQLiteAdapter.insertSchool(data1, data2);
                updateList();

                Toast.makeText(getApplicationContext(), "Saved",
                           Toast.LENGTH_SHORT).show();

                Intent myIntent = new Intent(InsertSchool.this, SchoolActivity.class);
                update();
                startActivity(myIntent);

                mySQLiteAdapter.close();
                }
            }
        });

Answer 1

要刷新，您应该调用列表适配器上的listView方法。notifyDataSetChanged()何时调用该方法取决于您......也许在您的onClickListener.