android 通过点击上下文菜单采用intent启动activity

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_activity_view);
 
    dataSource = new DBDataSource(this);
 
    dataSource.open();
 
    values = dataSource.getAllMahasiswa();
 
    ArrayAdapter<mahasiswa> adapter = new ArrayAdapter<mahasiswa>     (this, android.R.layout.simple_list_item_1, values);
 
    setListAdapter(adapter);
 
    listView=(ListView) findViewById(android.R.id.list);
    registerForContextMenu(listView);
 
 
 
}
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
        super.onCreateContextMenu(menu, v, menuInfo);
 
        menu.add(0, 1000, 0, "Edit");
        menu.add(0, 1001, 0, "Hapus");
 
}
 
public boolean onContextMenuItemSelected(MenuItem item){
     switch (item.getItemId()) {
       case 1000:
           Intent i = new Intent(ActivityView.this, Tes.class);
 
           startActivity(i);
       break;
       case 1001:
          //not yet
       break;
       }
       return super.onContextItemSelected(item);
 
 }</mahasiswa></mahasiswa>