AutoCompleteTextView可以直接与sqlite数据库绑定 模糊查询


 SQLiteDatabase sqlite = this.openOrCreateDatabase("data", 0, null);

//连接数据库

AutoCompleteTextView actv=(AutoCompleteTextView) findViewById(R.id.actv);

//不解释

actv.setThreshold(1);

//输入一个字符即开始匹配

String[] trainColumns = new String[] {"train_no", "id as _id" };

//欲查询匹配的列放第一,查询结果必须有_id列，因我的表中没有，所以把id as成_id,实践证明，其实随便哪个字段都可以as _id，不用主键，这里也可以train_no as _id.

trainAdpter trainadpter = new trainAdpter(this, null, 0);

//实例化自定义的适配器，代码在下面

actv.setAdapter(trainadpter);

//绑定适配器

 

private class trainAdpter extends CursorAdapter {

                private int columnIndex;

 

                public trainAdpter(Context context, Cursor c, int col) {

                        super(context, c);

                        this.columnIndex = col;

                }

 

                @Override

                public View newView(Context context, Cursor cursor, ViewGroup parent) {

                        final LayoutInflater inflater = LayoutInflater.from(context);

                        final TextView view = (TextView) inflater.inflate(android.R.layout.simple_dropdown_item_1line, parent, false);

                        return view;

                }

 

                @Override

                public void bindView(View view, Context context, Cursor cursor) {