Android Program to Delete a Calendar Event

package com.example.deletecaendarevent;
 
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.ContentValues;
import android.net.Uri;
import android.os.Bundle;
import android.provider.CalendarContract.Events;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
 
public class MainActivity extends Activity {
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button del = (Button) findViewById(R.id.delbut);
        del.setOnClickListener(new View.OnClickListener() {
 
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                delevent();
            }
        });
    }
 
    @SuppressLint("NewApi")
    public void delevent() {
 
        final String DEBUG_TAG = "MyActivity";
        long eventID = 760;
        ContentResolver cr = getContentResolver();
        ContentValues values = new ContentValues();
        Uri deleteUri = null;
        deleteUri = ContentUris.withAppendedId(Events.CONTENT_URI, eventID);
        int rows = getContentResolver().delete(deleteUri, null, null);
        Log.i(DEBUG_TAG, "Rows deleted: " + rows);
        Toast.makeText(this, "Event deleted", Toast.LENGTH_LONG).show();
    }
 
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
 
}