看到的一段安卓代码不解，希望得到帮助

Question

int count = cursor.getCount();
gsname = new String[count];
BaseAdapter ba = new BaseAdapter() {
@Override
public int getCount() {
// 指定一共包含10个选项
return gsname.length;
}
@Override

        public Object getItem(int position) {
            return null;
        }

@Override

        public long getItemId(int position) {
            // TODO Auto-generated method stub
            return 0;
        }

// 重写该方法，该方法返回的View将作为列表框的每项

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            TextView text = new TextView(Tianjiac.this);
            text.setText(gsname[position]);
            text.setTextSize(20);
            text.setTextColor(R.color.red);
            return text;

}

};

    gsmc.setAdapter(ba);

gsmc.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override

        public void onItemSelected(AdapterView<?> arg0, View arg1,
                int arg2, long arg3) {
            // TODO Auto-generated method stub
            gs = gsname[arg2];
            String selectStr2 = "select pername,tel from guke where comname='"
                    + gs + "'";
            Cursor cursor2 = sDatabase.rawQuery(selectStr2, null);
            cursor2.moveToFirst();
            String name = null;
            String tel = null;
            do {
                try {
                    name = cursor2.getString(0);
                    tel = cursor2.getString(1);
                    System.out.println("3333333333333333333333");
                } catch (Exception e) {
                    // TODO: handle exception
                    name = "";
                    tel = "";

}

} while (cursor2.moveToNext());

            lxr.setText(name);
            lxdh.setText(tel);

}

@Override

        public void onNothingSelected(AdapterView<?> arg0) {
            // TODO Auto-generated method stub

}

    });

看到的一段安卓代码不解，编译环境eclipse，不明白里面BaseAdapter类是什么意思，也搜索了一些资料但是总是弄不明白，求大神帮忙，非常感谢

Answer 1

BaseAdapter简单的说就是一个数据源。为你需要显示在手机端的view提供数据。view有一个setAdepter方法用来显示指定adapter的。建议你看下李刚的android。里面有一章讲解listveiw会详细讲到adapter