How To View Detailed Data Of A Specific List View Item

Let's say i have a list of cities from a country. If the user clicks one of them, i want a new screen to be displayed, with the detailed infos for that list element. Also, that scr

Solution 1:

The City class should implement Parcelable. Its toString() method should return the name of the city. (Rather than simply having the city as a String.)

When you populate your ListView, use an ArrayAdapter<City> instead of an ArrayAdapter<String> (this code assumes that the cities are kept in List<City> list):

City[] cities = new City[list.size()];
list.toArray(cities);
mListView = (ListView) findViewById(R.id.citylist);
mListView.setAdapter(newArrayAdapter<City>(this,
    R.layout.listitem, cities));

In your onItemClick handler, get the selected city and add it as an extra on the intent you use to launch your details activity:

mListView.setOnItemClickListener(newOnItemClickListener() {
    @OverridepublicvoidonItemClick(AdapterView<?> a,
            View v, int position, long id) {
        Citycity= (City) a.getItemAtPosition(position);
        Intentintent=newIntent(v.getContext(), DetailsActivity.class);
        intent.putExtra("com.example.cities.City", city);
        startActivity(intent);
    }
});

In your details activity, get the city from the extras on the intent:

Bundlebundle= getIntent().getExtras();
Citycity= bundle.getParcelable("com.example.cities.City");