Contact Manager coding
<p>I'm trying out the Contact Manager coding:</p>

<p>There are 2 classes:</p>

<p>First Class is Contact Manager:</p>

<pre><code>package com.contact;

import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;

public final class ContactManager extends Activity
{    
    public static final String TAG = "ContactManager";

    private Button mAddAccountButton;
    private ListView mContactList;
    private boolean mShowInvisible;
    private CheckBox mShowInvisibleControl;

    // Called when the activity is first created. Responsible for initializing the UI.
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        Log.v(TAG, "Activity State: onCreate()");
        super.onCreate(savedInstanceState);
        setContentView(R.layout.contact_manager);

        // Obtain handles to UI objects
        mAddAccountButton = (Button) findViewById(R.id.addContactButton);
        mContactList = (ListView) findViewById(R.id.contactList);
        mShowInvisibleControl = (CheckBox) findViewById(R.id.showInvisible);

        // Initialize class properties
        mShowInvisible = false;
        mShowInvisibleControl.setChecked(mShowInvisible);

        // Register handler for UI elements
        mAddAccountButton.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                Log.d(TAG, "mAddAccountButton clicked");
                launchContactAdder();
            }
        });
        mShowInvisibleControl.setOnCheckedChangeListener(new OnCheckedChangeListener() {
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                Log.d(TAG, "mShowInvisibleControl changed: " + isChecked);
                mShowInvisible = isChecked;
                populateContactList();
            }
        });

        // Populate the contact list
        populateContactList();
    }

    // Populate the contact list based on account currently selected in the account spinner.
    private void populateContactList() {
        // Build adapter with contact entries
        Cursor cursor = getContacts();
        String[] fields = new String[] {
                ContactsContract.Data.DISPLAY_NAME
        };
        SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.contact_entry, cursor,
                fields, new int[] {R.id.contactEntryText});
        mContactList.setAdapter(adapter);
    }

    // Obtains the contact list for the currently selected account.
    // @return A cursor for for accessing the contact list.
    private Cursor getContacts()
    {
        // Run query
        Uri uri = ContactsContract.Contacts.CONTENT_URI;
        String[] projection = new String[] {
                ContactsContract.Contacts._ID,
                ContactsContract.Contacts.DISPLAY_NAME
        };
        String selection = ContactsContract.Contacts.IN_VISIBLE_GROUP + " = '" +
                (mShowInvisible ? "0" : "1") + "'";
        String[] selectionArgs = null;
        String sortOrder = ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC";

        return managedQuery(uri, projection, selection, selectionArgs, sortOrder);
    }

    // Launches the ContactAdder activity to add a new contact to the selected accont.
    protected void launchContactAdder() {
        Intent i = new Intent(this, ContactAdder.class);
        startActivityForResult(i, 0);;
    }
}    
</code></pre>

<p>Second class is Contact Address:</p>

<pre><code>package com.contact;

import android.accounts.Account;
import android.accounts.AccountManager;
import android.accounts.AuthenticatorDescription;
import android.accounts.OnAccountsUpdateListener;
import android.app.Activity;
import android.content.ContentProviderOperation;
import android.content.Context;
import android.content.pm.PackageManager;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemSelectedListener;

import java.util.ArrayList;
import java.util.Iterator;

public final class ContactAdder extends Activity implements OnAccountsUpdateListener
{
    public static final String TAG = "ContactsAdder";
    public static final String ACCOUNT_NAME = "com.example.android.contactmanager.ContactsAdder.ACCOUNT_NAME";
    public static final String ACCOUNT_TYPE = "com.example.android.contactmanager.ContactsAdder.ACCOUNT_TYPE";

    private ArrayList&lt;AccountData&gt; mAccounts;
    private AccountAdapter mAccountAdapter;
    private Spinner mAccountSpinner;
    private EditText mContactEmailEditText;
    private ArrayList&lt;Integer&gt; mContactEmailTypes;
    private Spinner mContactEmailTypeSpinner;
    private EditText mContactNameEditText;
    private EditText mContactPhoneEditText;
    private ArrayList&lt;Integer&gt; mContactPhoneTypes;
    private Spinner mContactPhoneTypeSpinner;
    private Button mContactSaveButton;
    private AccountData mSelectedAccount;

    // Called when the activity is first created. Responsible for initializing the UI.
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        Log.v(TAG, "Activity State: onCreate()");
        super.onCreate(savedInstanceState);
        setContentView(R.layout.contact_adder);

        // Obtain handles to UI objects
        mAccountSpinner = (Spinner) findViewById(R.id.accountSpinner);
        mContactNameEditText = (EditText) findViewById(R.id.contactNameEditText);
        mContactPhoneEditText = (EditText) findViewById(R.id.contactPhoneEditText);
        mContactEmailEditText = (EditText) findViewById(R.id.contactEmailEditText);
        mContactPhoneTypeSpinner = (Spinner) findViewById(R.id.contactPhoneTypeSpinner);
        mContactEmailTypeSpinner = (Spinner) findViewById(R.id.contactEmailTypeSpinner);
        mContactSaveButton = (Button) findViewById(R.id.contactSaveButton);

        // Prepare list of supported account types
        // Note: Other types are available in ContactsContract.CommonDataKinds
        // Also, be aware that type IDs differ between Phone and Email, and MUST be computed separately.
        mContactPhoneTypes = new ArrayList&lt;Integer&gt;();
        mContactPhoneTypes.add(ContactsContract.CommonDataKinds.Phone.TYPE_HOME);
        mContactPhoneTypes.add(ContactsContract.CommonDataKinds.Phone.TYPE_WORK);
        mContactPhoneTypes.add(ContactsContract.CommonDataKinds.Phone.TYPE_MOBILE);
        mContactPhoneTypes.add(ContactsContract.CommonDataKinds.Phone.TYPE_OTHER);
        mContactEmailTypes = new ArrayList&lt;Integer&gt;();
        mContactEmailTypes.add(ContactsContract.CommonDataKinds.Email.TYPE_HOME);
        mContactEmailTypes.add(ContactsContract.CommonDataKinds.Email.TYPE_WORK);
        mContactEmailTypes.add(ContactsContract.CommonDataKinds.Email.TYPE_MOBILE);
        mContactEmailTypes.add(ContactsContract.CommonDataKinds.Email.TYPE_OTHER);

        // Prepare model for account spinner
        mAccounts = new ArrayList&lt;AccountData&gt;();
        mAccountAdapter = new AccountAdapter(this, mAccounts);
        mAccountSpinner.setAdapter(mAccountAdapter);

        // Populate list of account types for phone
        ArrayAdapter&lt;String&gt; adapter;
        adapter = new ArrayAdapter&lt;String&gt;(this, android.R.layout.simple_spinner_item);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        Iterator&lt;Integer&gt; iter;
        iter = mContactPhoneTypes.iterator();
        while (iter.hasNext()) {
            adapter.add(ContactsContract.CommonDataKinds.Phone.getTypeLabel(
                    this.getResources(),
                    iter.next(),
                    getString(R.string.undefinedTypeLabel)).toString());
        }
        mContactPhoneTypeSpinner.setAdapter(adapter);
        mContactPhoneTypeSpinner.setPrompt(getString(R.string.selectLabel));

        // Populate list of account types for email
        adapter = new ArrayAdapter&lt;String&gt;(this, android.R.layout.simple_spinner_item);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        iter = mContactEmailTypes.iterator();
        while (iter.hasNext()) {
            adapter.add(ContactsContract.CommonDataKinds.Email.getTypeLabel(
                    this.getResources(),
                    iter.next(),
                    getString(R.string.undefinedTypeLabel)).toString());
        }
        mContactEmailTypeSpinner.setAdapter(adapter);
        mContactEmailTypeSpinner.setPrompt(getString(R.string.selectLabel));

        // Prepare the system account manager. On registering the listener below, we also ask for
        // an initial callback to pre-populate the account list.
        AccountManager.get(this).addOnAccountsUpdatedListener(this, null, true);

        // Register handlers for UI elements
        mAccountSpinner.setOnItemSelectedListener(new OnItemSelectedListener() {
            public void onItemSelected(AdapterView&lt;?&gt; parent, View view, int position, long i) {
                updateAccountSelection();
            }

            public void onNothingSelected(AdapterView&lt;?&gt; parent) {
                // We don't need to worry about nothing being selected, since Spinners don't allow
                // this.
            }
        });
        mContactSaveButton.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                onSaveButtonClicked();
            }
        });
    }

    // Actions for when the Save button is clicked. Creates a contact entry and terminates the activity.
    private void onSaveButtonClicked() {
        Log.v(TAG, "Save button clicked");
        createContactEntry();
        finish();
    }

    // Creates a contact entry from the current UI values in the account named by mSelectedAccount.
    protected void createContactEntry() {
        // Get values from UI
        String name = mContactNameEditText.getText().toString();
        String phone = mContactPhoneEditText.getText().toString();
        String email = mContactEmailEditText.getText().toString();
        int phoneType = mContactPhoneTypes.get(
                mContactPhoneTypeSpinner.getSelectedItemPosition());
        int emailType = mContactEmailTypes.get(
                mContactEmailTypeSpinner.getSelectedItemPosition());;

        // Prepare contact creation request
        //
        // Note: We use RawContacts because this data must be associated with a particular account.
        //       The system will aggregate this with any other data for this contact and create a
        //       coresponding entry in the ContactsContract.Contacts provider for us.
        ArrayList&lt;ContentProviderOperation&gt; ops = new ArrayList&lt;ContentProviderOperation&gt;();
        ops.add(ContentProviderOperation.newInsert(ContactsContract.RawContacts.CONTENT_URI)
                .withValue(ContactsContract.RawContacts.ACCOUNT_TYPE, mSelectedAccount.getType())
                .withValue(ContactsContract.RawContacts.ACCOUNT_NAME, mSelectedAccount.getName())
                .build());
        ops.add(ContentProviderOperation.newInsert(ContactsContract.Data.CONTENT_URI)
                .withValueBackReference(ContactsContract.Data.RAW_CONTACT_ID, 0)
                .withValue(ContactsContract.Data.MIMETYPE,
                        ContactsContract.CommonDataKinds.StructuredName.CONTENT_ITEM_TYPE)
                .withValue(ContactsContract.CommonDataKinds.StructuredName.DISPLAY_NAME, name)
                .build());
        ops.add(ContentProviderOperation.newInsert(ContactsContract.Data.CONTENT_URI)
                .withValueBackReference(ContactsContract.Data.RAW_CONTACT_ID, 0)
                .withValue(ContactsContract.Data.MIMETYPE,
                        ContactsContract.CommonDataKinds.Phone.CONTENT_ITEM_TYPE)
                .withValue(ContactsContract.CommonDataKinds.Phone.NUMBER, phone)
                .withValue(ContactsContract.CommonDataKinds.Phone.TYPE, phoneType)
                .build());
        ops.add(ContentProviderOperation.newInsert(ContactsContract.Data.CONTENT_URI)
                .withValueBackReference(ContactsContract.Data.RAW_CONTACT_ID, 0)
                .withValue(ContactsContract.Data.MIMETYPE,
                        ContactsContract.CommonDataKinds.Email.CONTENT_ITEM_TYPE)
                .withValue(ContactsContract.CommonDataKinds.Email.DATA, email)
                .withValue(ContactsContract.CommonDataKinds.Email.TYPE, emailType)
                .build());

        // Ask the Contact provider to create a new contact
        Log.i(TAG,"Selected account: " + mSelectedAccount.getName() + " (" +
                mSelectedAccount.getType() + ")");
        Log.i(TAG,"Creating contact: " + name);
        try {
            getContentResolver().applyBatch(ContactsContract.AUTHORITY, ops);
        } catch (Exception e) {
            // Display warning
            Context ctx = getApplicationContext();
            CharSequence txt = getString(R.string.contactCreationFailure);
            int duration = Toast.LENGTH_SHORT;
            Toast toast = Toast.makeText(ctx, txt, duration);
            toast.show();

            // Log exception
            Log.e(TAG, "Exceptoin encoutered while inserting contact: " + e);
        }
    }

   // Called when this activity is about to be destroyed by the system.
    @Override
    public void onDestroy() {
        // Remove AccountManager callback
        AccountManager.get(this).removeOnAccountsUpdatedListener(this);
        super.onDestroy();
    }

    // Updates account list spinner when the list of Accounts on the system changes. Satisfies OnAccountsUpdateListener implementation.
    public void onAccountsUpdated(Account[] a) {
        Log.i(TAG, "Account list update detected");
        // Clear out any old data to prevent duplicates
        mAccounts.clear();

        // Get account data from system
        AuthenticatorDescription[] accountTypes = AccountManager.get(this).getAuthenticatorTypes();

        // Populate tables
        for (int i = 0; i &lt; a.length; i++) {
            // The user may have multiple accounts with the same name, so we need to construct a
            // meaningful display name for each.
            String systemAccountType = a[i].type;
            AuthenticatorDescription ad = getAuthenticatorDescription(systemAccountType,
                    accountTypes);
            AccountData data = new AccountData(a[i].name, ad);
            mAccounts.add(data);
        }

        // Update the account spinner
        mAccountAdapter.notifyDataSetChanged();
    }

    // Obtain the AuthenticatorDescription for a given account type.
    // @param type The account type to locate.
    // @param dictionary An array of AuthenticatorDescriptions, as returned by AccountManager.
    // @return The description for the specified account type.
    private static AuthenticatorDescription getAuthenticatorDescription(String type,
            AuthenticatorDescription[] dictionary) {
        for (int i = 0; i &lt; dictionary.length; i++) {
            if (dictionary[i].type.equals(type)) {
                return dictionary[i];
            }
        }
        // No match found
        throw new RuntimeException("Unable to find matching authenticator");
    }

    // Update account selection. If NO_ACCOUNT is selected, then we prohibit inserting new contacts.
    private void updateAccountSelection() {
        // Read current account selection
        mSelectedAccount = (AccountData) mAccountSpinner.getSelectedItem();
    }

    // A container class used to repreresent all known information about an account.
    private class AccountData {
        private String mName;
        private String mType;
        private CharSequence mTypeLabel;
        private Drawable mIcon;

        // @param name The name of the account. This is usually the user's email address or username.
        // @param description The description for this account. This will be dictated by the type of account returned, and can be obtained from the system AccountManager.
        public AccountData(String name, AuthenticatorDescription description) {
            mName = name;
            if (description != null) {
                mType = description.type;

                // The type string is stored in a resource, so we need to convert it into something
                // human readable.
                String packageName = description.packageName;
                PackageManager pm = getPackageManager();

                if (description.labelId != 0) {
                    mTypeLabel = pm.getText(packageName, description.labelId, null);
                    if (mTypeLabel == null) {
                        throw new IllegalArgumentException("LabelID provided, but label not found");
                    }
                } else {
                    mTypeLabel = "";
                }

                if (description.iconId != 0) {
                    mIcon = pm.getDrawable(packageName, description.iconId, null);
                    if (mIcon == null) {
                        throw new IllegalArgumentException("IconID provided, but drawable not " +
                                "found");
                    }
                } else {
                    mIcon = getResources().getDrawable(android.R.drawable.sym_def_app_icon);
                }
            }
        }

        public String getName() {
            return mName;
        }

        public String getType() {
            return mType;
        }

        public CharSequence getTypeLabel() {
            return mTypeLabel;
        }

        public Drawable getIcon() {
            return mIcon;
        }

        public String toString() {
            return mName;
        }
    }

    // Custom adapter used to display account icons and descriptions in the account spinner.
    private class AccountAdapter extends ArrayAdapter&lt;AccountData&gt; {
        public AccountAdapter(Context context, ArrayList&lt;AccountData&gt; accountData) {
            super(context, android.R.layout.simple_spinner_item, accountData);
            setDropDownViewResource(R.layout.account_entry);
        }

        public View getDropDownView(int position, View convertView, ViewGroup parent) {
            // Inflate a view template
            if (convertView == null) {
                LayoutInflater layoutInflater = getLayoutInflater();
                convertView = layoutInflater.inflate(R.layout.account_entry, parent, false);
            }
            TextView firstAccountLine = (TextView) convertView.findViewById(R.id.firstAccountLine);
            TextView secondAccountLine = (TextView) convertView.findViewById(R.id.secondAccountLine);
            ImageView accountIcon = (ImageView) convertView.findViewById(R.id.accountIcon);

            // Populate template
            AccountData data = getItem(position);
            firstAccountLine.setText(data.getName());
            secondAccountLine.setText(data.getTypeLabel());
            Drawable icon = data.getIcon();
            if (icon == null) {
                icon = getResources().getDrawable(android.R.drawable.ic_menu_search);
            }
            accountIcon.setImageDrawable(icon);
            return convertView;
        }
    }
}
</code></pre>

<p>I am getting <code>forceclose</code> when I run this code. </p>

<p>This is <a href="http://developer.android.com/resources/samples/ContactManager/index.html" rel="nofollow">the website</a> where I found this code.</p>

<p>Please Help!</p>
