is it possible to create listview inside dialog?

i have created a custom dialog class

public class NewPost extends Dialog
{
// functionality

}

now my requirement is to create listview inside it. i know we can create textboxes,buttons,dropdown list inside it.

but in order to create list view we should inher开发者_开发百科it our class from listActivity class

what you suggest is it possible or not if yes then how to achieve this using any interface or what?

this implementation doesn't require you to make any xml layouts. it was written as a case statement in "onCreateDialog" override, but you can adapt if for your purposes very easily:

AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Select Color Mode");

ListView modeList = new ListView(this);
String[] stringArray = new String[] { "Bright Mode", "Normal Mode" };
ArrayAdapter<String> modeAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, android.R.id.text1, stringArray);
modeList.setAdapter(modeAdapter);

builder.setView(modeList);
final Dialog dialog = builder.create();

dialog.show();

because you are making a dialog with only a ListView, you set the onItemClickListener of the ListView, as there isn't one for the basic dialog class.

modeList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
            switch(i) {
                case 0:
                    //do something for first selection
                    break;
                case 1:
                    //do something for second selection
                    break;
            }
            dialog.dismiss();
        }
    });

Yes.

You can always use a ListView inside a Dialog. And you definitely don't necessarily need ListActivity to create ListView.

Code may be something like this:

Dialog dlg = new Dialog(context);
LayoutInflater li = context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = li.inflate(R.layout.my_layout, null, false);
dlg.setContentView(v);
dlg.show();

my_layout.xml:

<ScrollView xmlns:android="blah"
   android:id="xid"
   android:layout_height="h"
   android:layout_width="w">

  <ListView blah blah blah attributes
  />

 </ScrollView>

You don't really have to extend listActivity in order to use listviews.

Extending listActivity will give you some functionality for free, such as getListView() (if I recall the method name correctly), but that can just as well be done manually with findViewById() just as any other view.

The simplest possible way:

    ListView listView = new ListView(this);
    listView.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, new String[] {"item 1", "item 2", "item 3"}));
    Dialog dialog = new Dialog(this);
    dialog.setContentView(listView);
    dialog.show();

You can create a custom dialog with this layout:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:gravity="center_vertical|center_horizontal"
    android:background="@drawable/dialogs">
    <RelativeLayout 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:paddingLeft="20dip"
        android:paddingRight="20dip"
        android:paddingTop="10dip">
        <ImageView 
            android:id="@+id/dialog_title_image"
            android:layout_alignParentLeft="true"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/info"/>
        <TextView 
            android:id="@+id/dialog_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="10dip"
            android:layout_marginTop="20dp"
            android:layout_centerInParent="true"
            android:text="Title"
            android:layout_toRightOf="@id/dialog_title_image"
            android:textColor="@android:color/black"
            android:textSize="20sp"/>

        <!-- Lista -->
    </RelativeLayout>
    <TextView 
            android:layout_width="fill_parent"
            android:layout_height="3dip"
            android:background="#1e90ff"/>
    <ListView
            android:id="@+id/component_list"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />

    <!-- Fine lista -->

    <RelativeLayout 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:paddingTop="10dip"
        android:paddingLeft="10dp"
        android:paddingRight="10dp"
        android:layout_marginLeft="20dp"
        android:layout_marginRight="20dp"
        android:gravity="bottom|center_horizontal"
        android:paddingBottom="20dip">
        <Button 
            android:id="@+id/positive_button"
            android:layout_alignParentLeft="true"
            android:layout_width="120dip"
            android:layout_height="wrap_content"
            android:background="#1e90ff"
            android:textColor="@android:color/white"
            android:text="@string/close"/>

    </RelativeLayout>
</LinearLayout>

create a custom layout also for each item if you want:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingTop="10dp"
    android:paddingBottom="10dp"
    android:paddingLeft="10dp"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Large Text"
        android:textStyle="bold"
        android:textAppearance="?android:attr/textAppearanceLarge" />


    <TextView
        android:id="@+id/subtitle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Small Text"
        android:textAppearance="?android:attr/textAppearanceSmall" />


</LinearLayout>

and then use an arraylist to populate the list and set the view:

        //creation and population of the list
        List<Component> my_list = new ArrayList<Component>();
        createComponents();

        //adapter
        array_adapter = new ComponentAdapter(context, R.layout.component,my_list);

        //button to show the dialog
        Button button = (Button)findViewById(R.id.button1);

        button.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                list_dialog = new Dialog(context);
                list_dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
                list_dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
                list_dialog.setContentView(R.layout.list_dialog);

                ListView list = (ListView)list_dialog.findViewById(R.id.component_list);
                list.setAdapter(array_adapter);

                Button positiveButton = (Button) list_dialog.findViewById(R.id.positive_button);

                positiveButton.setOnClickListener(new OnClickListener(){

                    @Override
                    public void onClick(View arg0) {

                        list_dialog.dismiss();  
                    }
                });

                list_dialog.show();     
            }
        });


    }

References: http://pillsfromtheweb.blogspot.it/2014/10/android-listview-inside-alertdialog.html#links

Result:

You can use any layout for alert dialogs. If you want a listview I would do it like here