Android Developer Long Press Menu context menu

How to create a pop-up menu in Android development:

1. First give the View Register context menu Registerforcontextmenu ();

2. Add context menu Content Oncreatecontextmenu ():

---can be added dynamically through code;

---can load menu items in the XML file;

3. Set Menu click Response Event oncontextitemselected ();

Run as follows:

The Activity_main.xml code is as follows:

<relativelayout

Android:layout_width= "Match_parent"

...... omitted here

>

<listview

Android:layout_width= "Fill_parent"

android:layout_height= "Fill_parent"

Android:id= "@+id/listview"

/>

</RelativeLayout>

The Mainactivity.java code is as follows:

...... omitted here

@Override

protected void OnCreate (Bundle savedinstancestate) {

Super.oncreate (savedinstancestate);

Setcontentview (R.layout.activity_main);

Showlistview ();

}

/**

* Set the display of the ListView

*/

private void Showlistview () {

ListView ListView = Findviewbyid (R.id.listview);

arrayadapter<string> adapter = new Arrayadapter<string> (this,android. R.layout.simple_list_item_1,getdata ());

Listview.setadapter (adapter);

This.registerforcontextmenu (listview);

}

@Override

public void Oncreatecontextmenu (ContextMenu menu,view v,contextmenuinfo menuinfo) {

Super.oncreatecontextmenu (Menu,v,menuinfo);

Set Menu Display content

Menu.setheadertitle ("file operation");

Menu.setheadericon (R.drawable.ic_launcher);

Menu.add (1,1,1, "copy");

Menu.add (1,2,1, "paste");

Menu.add (1,3,1, "cut");

Menu.add (1,4,1, "renaming");

}

@Override

public boolean oncontextitemselected (MenuItem item) {

Switch (Item.getitemid ()) {

Case 1:

Toast.maketext (Mainactivity.this, "click Copy", Toast.length_short). Show ();

Break

Case 2:

Toast.maketext (Mainactivity.this, "Click to paste", Toast.length_short). Show ();

Break

Case 3:

Toast.maketext (Mainactivity.this, "Click Cut", Toast.length_short). Show ();

Break

Case 4:

Toast.maketext (Mainactivity.this, "Click Rename", Toast.length_short). Show ();

Break

}

return super.oncontextitemselected (item);

}

/**

* Construct the data displayed by the ListView

*/

Private Arraylist<string> GetData () {

arraylist<string> list = new arraylist<string> ();

for (int i=0;i<5;i++) {

List.add ("File" + (i+1));

}

return list;

}

Android Developer Long Press Menu context menu