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Context menu in android


Program to create context menu in android/Context menu in android

Ø  A context menu is a floating menu that appears when the user performs a long-click on an element

main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView 
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/hello"
    />
<Button
android:text="Button"
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</Button>
</LinearLayout>

Context_menu.xml
<?xml version="1.0" encoding="utf-8"?>
<menu
  xmlns:android="http://schemas.android.com/apk/res/android">
 <item android:id="@+id/edit"
              android:title="@string/edit" />
      <item android:id="@+id/save"
            android:title="@string/save" />
      <item android:id="@+id/delete"
            android:title="@string/delete" />
      <item android:id="@+id/view"
            android:title="@string/view" />
</menu>

ContextmenuActivity.java

package com.example;

import android.app.Activity;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.Button;
import android.widget.Toast;

public class ContextMenuActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Button button=(Button)findViewById(R.id.button1);
        registerForContextMenu(button);
    }
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
      super.onCreateContextMenu(menu, v, menuInfo);
      MenuInflater inflater = getMenuInflater();
      inflater.inflate(R.menu.context_menu, menu);
    }
   
    public boolean onContextItemSelected(MenuItem item) {
      AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
     
      switch(item.getItemId()) {
      case R.id.edit:
            Toast.makeText(this, "You have chosen the " + getResources().getString(R.string.edit),
                        Toast.LENGTH_SHORT).show();
            return true;
      case R.id.save:
            Toast.makeText(this, "You have chosen the " + getResources().getString(R.string.save),
                        Toast.LENGTH_SHORT).show();
            return true;
      case R.id.delete:
            Toast.makeText(this, "You have chosen the " + getResources().getString(R.string.delete) ,
                        Toast.LENGTH_SHORT).show();
            return true;
      case R.id.view:
            Toast.makeText(this, "You have chosen the " + getResources().getString(R.string.view),
                        Toast.LENGTH_SHORT).show();
            return true;
      default:
            return super.onContextItemSelected(item);
      }
    }
   
     
}
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