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();

                     }

                 });