Question

我从变量缓冲区的数据库获取数据，我希望这些数据显示在ListView

这是我的adaper

private void setAdapterData() {

    DBHelper db = new DBHelper(this);

            for (students stud : CustomListViewValuesArr) {
                db.insertContact(stud.getrollno(), stud.getfirst(), stud.getsecond(), stud.getper());


            }

            Log.d("Reading: ", "Reading all contacts..");

            ArrayList<students> stu = db.getAllCotacts();
            res = getResources();

            adapter = new CustomAdapter(CustomListView, stu, res);
            studentlist.setAdapter((ListAdapter) adapter);
        }

Answer 1

我完成了，

使用Cursor

将此活动的意图发送到另一个活动

Cursor c = db.rawQuery（＆＃34; SELECT * FROM student＆＃34;，null）;

                    if (c.getCount() == 0) {
                        showMessage("No records found");
                        return;
                    }

                //   convert array list to string

                List<String> buffer = new ArrayList<String>();

                    while (c.moveToNext())
                        {

                            buffer.add("" + c.getString(1)+ " "+ c.getString(2));

                        }

                            Intent intent = new Intent(this, viewdetails.class);
                            intent.putStringArrayListExtra(EXTRA_MESSAGE, (ArrayList<String>) buffer);
                            startActivity(intent);
            }

在另一个列表活动中

    Intent intent=getIntent();

    ArrayList<String> buffer = intent.getStringArrayListExtra(MainActivity.EXTRA_MESSAGE);
    ListView lListView = new ListView(this);
    lListView = (ListView)findViewById(R.id.content);

    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,buffer);

    lListView.setAdapter(adapter);

我从变量缓冲区的数据库中获取数据，我希望这些数据显示在listview中

1 个答案: