How do I make the ListView clickable and show some text once it gets clicked?

问题

I am practicing ListView and I have placed a few List Items on an activity. Right now I have 3 items of list (in three rows). I want that once a user click one of the row (let's say it's my first row for now) s/he should be able to see some details text about it. That text will be displayed somewhere at at the bottom of the activity , outside the ListView.How could I do that? Like this:

I am working on this code:

MainActivity.java:

public class MainActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        String[] list = {"About Company", "Home Page", "Contact"};

        Adapter adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, list);

        ListView listView = (ListView) findViewById(R.id.listId);

        listView.setAdapter((ListAdapter) adapter);

        listView.setOnItemClickListener(

                new AdapterView.OnItemClickListener() {

                    @Override
                    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                        String listPosition = String.valueOf(parent.getItemAtPosition(position));
                        /*after clicking the first row of the list show the following info :
                        NAME: Some name
                        ADDRESS: Somewhere
                         */
                    }
                }
        );


    }
}

activity_main.xml:

    <ListView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/listId"

    android:background="#f79727"
    android:textFilterEnabled="false"
    android:layout_marginBottom="300dp" />

<ListView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/listView"
    android:layout_alignBottom="@+id/listId"
    android:layout_centerHorizontal="true"
    android:layout_marginBottom="66dp" />

回答1:

I think you need good code working samples and a tutorial. A good link is [Using an ArrayAdapter with ListView][1]

[1]: https://github.com/codepath/android_guides/wiki/Using-an-ArrayAdapter-with-ListView . You asked to populate the Listview, look at the code extending the ArrayAdapter. Since you want to write text on the bottom, you can create a TextView outside the LinearLayout in the res/layout/item_user.xml. That is one simple way. Try some code and see what you get. You'll have to participate half way since you can learn a lot here.

回答2:

Add an onClickListener on the list view. When clicked set the text below.

回答3:

Try this

XML

<ListView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/listView"
    android:layout_alignBottom="@+id/listId"
    android:layout_centerHorizontal="true"
    android:layout_marginBottom="66dp"

    android:choiceMode="singleChoice"

 />

CLick Listener ListView

listView.setOnItemClickListener(new OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> a, View v, int position,
                    long id) {
                 String listPosition = list[position];
                Toast.makeText(MainActivity .this, listPosition , Toast.LENGTH_LONG).show();
            }
        });

回答4:

Change you code to the following

String[] descriptionList = {"Company's Address....", "Home Address....", "Contact no...."};

Your XML file content

<ListView android:layout_width="match_parent"
 android:layout_height="match_parent" 
android:id="@+id/listId"
 android:background="#f79727"
 android:textFilterEnabled="false"
 android:layout_marginBottom="300dp" />

    <TextView android:layout_width="wrap_content"
 android:layout_height="wrap_content" android:id="@+id/textview" android:layout_alignBottom="@+id/listId"
 android:layout_centerHorizontal="true"
 android:layout_marginBottom="66dp" />

initialize the textview in oncreate() method

textView =(TextView)findViewById(R.id.textview);

Your ontemclick listener

 listView.setOnItemClickListener( new AdapterView.OnItemClickListener() {
     @Override
     public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
   textView.setText(descriptionList.get(position));
    } } );

来源：https://stackoverflow.com/questions/28595945/how-do-i-make-the-listview-clickable-and-show-some-text-once-it-gets-clicked