Monday, 24 October 2016

ContextMenu

A Context menu is a skimming menu that shows up when the client plays out a long-tap on a    
    component. It gives activities that influence the chose substance or setting outline.

   Example :-
                     @override
                        public boolean onContextItemSelected(MenuItem item)
                        {
                        AdapterContextMenuInfo info = (AdapterContextMenuInfo)item.getMenuInfo();
                        Switch (item.getItemId())
                       {
                        case R.id.contacts:
                        contacts(info.id);
                        return true;
                        case R.id.settings:
                        settings(info.id);
                        return true;
                        default:
                        return super.onContextItemSelected(item);
                        }

Code for ContextMenu in android below shown .

activity_main.xml :-

<?xml version="1.0" encoding="utf-8"?>
 <LinearLayout 
  xmlns:android="http://schemas.android.com/apk/res/android" 
  xmlns:tools="http://schemas.android.com/tools"  
  android:layout_width="match_parent" 
  android:layout_height="match_parent"  
  android:orientation="vertical"  
  tools:context="com.kiranapp.MainActivity">

<ListView
 android:layout_width="match_parent" 
 android:layout_height="wrap_content" 
 android:id="@+id/listView" 
 android:layout_marginTop="20dp" 
 android:layout_gravity="center_horizontal" />
</LinearLayout>

MainActivity.java :-

package com.kiranapp;

import android.os.Bundle;
import android.support.v7.app.Activity;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ArrayAdapter;
import android.view.AdapterView;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends Activity {
    ListView lv;
String Courses[]={"ANDROID","IOS","PHONEGAP","BLACKBERRY","WINDOWS","MICROSOFT"};

@Override protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 lv=(ListView)findViewById(R.id.listView);
 ArrayAdapter<String> adapter=new ArrayAdapter<String>
                           (this,android.R.layout.simple_list_item_1,Courses);
 lv.setAdapter(adapter);
 registerForContextMenu(lv);
 }

@Overridepublic void onCreateContextMenu(ContextMenu menu, View v, 
                                       ContextMenu.ContextMenuInfo menuInfo)
{
super.onCreateContextMenu(menu, v, menuInfo);
menu.setHeaderTitle("Select The movement");
menu.add(0,v.getId(),0,"view");
menu.add(0,v.getId(),0,"send sms");
}

@Override public boolean onContextItemSelected(MenuItem item)
 {
 if (item.getTitle()=="view")
 {
 Toast.makeText(getApplicationContext(),"view code",Toast.LENGTH_LONG).show();
 }
 else if (item.getTitle()=="send sms"){
Toast.makeText(getApplicationContext(),"sendingsmscode",Toast.LENGTH_LONG).show();
 }
 else {
 return false;
 }
 return true;
 }
}

Output :-

Select the Run option we will get the result of the context menu app and it will show the output on emulator or on mobile phone.






































 

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