ArrayAdapter的简单使用

1、创建一个类继承ArrayAdapter

 private class MyAdapter extends ArrayAdapter {
         LayoutInflater in;
         Context context;
         int resource;
         List<Student> students;

         public MyAdapter(Context context, int resource, List<Student> students) {
             super(context, resource, students);
             this.context = context;
             this.resource = resource;
             this.students = students;
         }

         @Override
         public int getCount() {
             return students.size();
         }

         @Override
         public View getView(int position, View convertView, ViewGroup parent) {

             in = LayoutInflater.from(context);
             if (convertView == null) {
                 Log.d("MyAdapter", "创建新的convertView" + position);
                 convertView = in.inflate(resource, null);
             } else {
                 Log.d("MyAdapter", "复用原来的convertView" + position);
             }

             TextView name = (TextView) convertView.findViewById(R.id.name);
             TextView sex = (TextView) convertView.findViewById(R.id.sex);
             TextView Student_id = (TextView) convertView.findViewById(R.id.Student_id);
             TextView Myclass = (TextView) convertView.findViewById(R.id.Myclass);

             Student student = students.get(position);

             name.setText(student.name);
             sex.setText(student.sex);
             Student_id.setText(student.Student_id + "");
             Myclass.setText(student.aClass.name);
             return convertView;
         }

     }

2、在Activity中

                 List<Student> students=.........
                 ListView listView = (ListView) findViewById(R.id.listView);
                 listView.setAdapter(new MyAdapter(MainActivity.this, R.layout.list_item, students));
                 listView.setOnItemClickListener(new OnItemClickListener() {

                     @Override
                     public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                         Toast.makeText(getApplicationContext(), position + "", 0).show();

                     }
                 });