android 基础一 <ListView>

public class ListViewActivity extends AppCompatActivity {
    ListView lvData;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_list_view);
        lvData=(ListView)findViewById(R.id.lvData);
        lvData.setAdapter(new MyAdapter());
        new QueueTest().start();
    }
    public class MyAdapter extends BaseAdapter {
        int count=0;
        @Override
        public int getCount() {
            return 10;
        }
        @Override
        public Object getItem(int position) {
            return null;
        }
        @Override
        public long getItemId(int position) {
            return 0;
        }
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            TextView textView=null;
            if(convertView!=null){
                textView=(TextView)convertView;
            }else{
                textView=new TextView(getApplicationContext());
            }

            textView.setText("测试数据:"+(++count));
            return textView;
        }
        @Override
        public CharSequence[] getAutofillOptions() {
            return new CharSequence[0];
        }
    }

}