Java tutorial
//package com.java2s; import android.content.Context; import android.content.Intent; import android.net.Uri; import android.provider.ContactsContract; public class Main { public static void openContactInfo(final Context context, final long contactid) { final Intent intent = new Intent(Intent.ACTION_VIEW); final Uri uri = Uri.withAppendedPath(ContactsContract.Contacts.CONTENT_URI, String.valueOf(contactid)); intent.setData(uri); context.startActivity(intent); } }