ContentProvider

package dradev.pocs.mycontatos;

import java.io.File;
import java.io.FileOutputStream;
import java.util.Calendar;

import android.app.Activity;
import android.app.ProgressDialog;
import android.database.Cursor;
import android.database.MatrixCursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.support.v4.widget.SimpleCursorAdapter;
import android.util.Log;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends Activity {

    SimpleCursorAdapter mAdapter;
    MatrixCursor mMatrixCursor;
    int quantidade;


    private static final String CAT = "@Dradev";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // The contacts from the contacts content provider is stored in this cursor
        mMatrixCursor = new MatrixCursor(new String[] { "_id","name","photo","details"} );


     // Adapter to set data in the listview
        mAdapter = new SimpleCursorAdapter(getBaseContext(),
            R.layout.lv_contatos_layout2,
            null,
            new String[] { "name","photo","details"},
            new int[] { R.id.contato_nome,R.id.contato_foto,R.id.contato_detalhes}, 0);

        ListView lstContatos = (ListView)findViewById(R.id.lv_contatos);
        lstContatos.setAdapter(mAdapter);

        // Creating an AsyncTask object to retrieve and load listview with contacts
        ListViewContactsLoader listViewContactsLoader = new ListViewContactsLoader();

        // Starting the AsyncTask process to retrieve and load listview with contacts
        listViewContactsLoader.execute();

    }

    ////////////////////////////////////////////////
        /** An AsyncTask class to retrieve and load listview with contacts */
        private class ListViewContactsLoader extends AsyncTask<Void, Void, Cursor>{

            Calendar dataInicial;
            Calendar dataFinal;
            private ProgressDialog progressDialog;

            @Override
            protected void onPreExecute() {
                Log.i(CAT, "Mostrando Progress Dialog");
                progressDialog = new ProgressDialog(MainActivity.this);
                progressDialog.setMessage("Aguarde...");
                progressDialog.show();

                dataInicial = Calendar.getInstance();
            }

            @Override
            protected Cursor doInBackground(Void... params) {
                Log.i(CAT, "Iniciando doInBackgorund");
                Uri contactsUri = ContactsContract.Contacts.CONTENT_URI;

                // Querying the table ContactsContract.Contacts to retrieve all the contacts
                Cursor contactsCursor = getContentResolver().query(contactsUri, null, null, null,
                ContactsContract.Contacts.DISPLAY_NAME + " ASC ");

                quantidade = contactsCursor.getCount();

                if(contactsCursor.moveToFirst()){
                    do{
                        long contactId = contactsCursor.getLong(contactsCursor.getColumnIndex("_ID"));

                        Uri dataUri = ContactsContract.Data.CONTENT_URI;

                        // Querying the table ContactsContract.Data to retrieve individual items like
                        // home phone, mobile phone, work email etc corresponding to each contact
                        Cursor dataCursor = getContentResolver().query(dataUri, null,
                                            ContactsContract.Data.CONTACT_ID + "=" + contactId,
                                            null, null);

                        String displayName="";
                        String nickName="";
                        String homePhone="";
                        String mobilePhone="";
                        String workPhone="";
                        String photoPath="" + R.drawable.boneco;
                        byte[] photoByte;
                        String homeEmail="";
                        String workEmail="";
                        String companyName="";
                        String title="";
                        byte[] isPhoto;

                        if(dataCursor.moveToFirst()){
                            // Getting Display Name
                            displayName = dataCursor.getString(dataCursor.getColumnIndex(ContactsContract.Data.DISPLAY_NAME ));
                            do{

                                // Getting NickName
                                if(dataCursor.getString(dataCursor.getColumnIndex("mimetype")).equals(ContactsContract.CommonDataKinds.Nickname.CONTENT_ITEM_TYPE))
                                    nickName = dataCursor.getString(dataCursor.getColumnIndex("data1"));

                                // Getting Phone numbers
                                if(dataCursor.getString(dataCursor.getColumnIndex("mimetype")).equals(ContactsContract.CommonDataKinds.Phone.CONTENT_ITEM_TYPE)){
                                    switch(dataCursor.getInt(dataCursor.getColumnIndex("data2"))){
                                        case ContactsContract.CommonDataKinds.Phone.TYPE_HOME :
                                            homePhone = dataCursor.getString(dataCursor.getColumnIndex("data1"));
                                            break;
                                        case ContactsContract.CommonDataKinds.Phone.TYPE_MOBILE :
                                            mobilePhone = dataCursor.getString(dataCursor.getColumnIndex("data1"));
                                            break;
                                        case ContactsContract.CommonDataKinds.Phone.TYPE_WORK :
                                            workPhone = dataCursor.getString(dataCursor.getColumnIndex("data1"));
                                            break;
                                    }
                                }

                                // Getting EMails
                                if(dataCursor.getString(dataCursor.getColumnIndex("mimetype")).equals(ContactsContract.CommonDataKinds.Email.CONTENT_ITEM_TYPE ) ) {
                                    switch(dataCursor.getInt(dataCursor.getColumnIndex("data2"))){
                                        case ContactsContract.CommonDataKinds.Email.TYPE_HOME :
                                            homeEmail = dataCursor.getString(dataCursor.getColumnIndex("data1"));
                                            break;
                                        case ContactsContract.CommonDataKinds.Email.TYPE_WORK :
                                            workEmail = dataCursor.getString(dataCursor.getColumnIndex("data1"));
                                            break;
                                    }
                                }

                                // Getting Organization details
                                if(dataCursor.getString(dataCursor.getColumnIndex("mimetype")).equals(ContactsContract.CommonDataKinds.Organization.CONTENT_ITEM_TYPE)){
                                    companyName = dataCursor.getString(dataCursor.getColumnIndex("data1"));
                                    title = dataCursor.getString(dataCursor.getColumnIndex("data4"));
                                }

                                // Pega Foto
                                if(dataCursor.getString(dataCursor.getColumnIndex("mimetype")).equals(ContactsContract.CommonDataKinds.Photo.CONTENT_ITEM_TYPE)){
                                    isPhoto = dataCursor.getBlob(dataCursor.getColumnIndex("data15"));

                                    if(isPhoto != null) {
                                        photoByte = isPhoto;
                                        Bitmap bitmap = BitmapFactory.decodeByteArray(photoByte, 0, photoByte.length);

                                        // Getting Caching directory
                                        File cacheDirectory = getBaseContext().getCacheDir();

                                        // Temporary file to store the contact image
                                        File tmpFile = new File(cacheDirectory.getPath() + "/wpta_"+contactId+".png");

                                        // The FileOutputStream to the temporary file
                                        try {
                                            FileOutputStream fOutStream = new FileOutputStream(tmpFile);

                                            // Writing the bitmap to the temporary file as png file
                                            bitmap.compress(Bitmap.CompressFormat.PNG,100, fOutStream);

                                            // Flush the FileOutputStream
                                            fOutStream.flush();

                                            //Close the FileOutputStream
                                            fOutStream.close();

                                        } catch (Exception e) {
                                            e.printStackTrace();
                                        }
                                        photoPath = tmpFile.getPath();
                                    }

                                }
                            }while(dataCursor.moveToNext());
                            String details = "";

                            // Concatenating various information to single string
                            if(homePhone != null && !homePhone.equals("") )
                                details = "HomePhone : " + homePhone + "\n";
                            if(mobilePhone != null && !mobilePhone.equals("") )
                                details += "MobilePhone : " + mobilePhone + "\n";
                            if(workPhone != null && !workPhone.equals("") )
                                details += "WorkPhone : " + workPhone + "\n";
                            if(nickName != null && !nickName.equals("") )
                                details += "NickName : " + nickName + "\n";
                            if(homeEmail != null && !homeEmail.equals("") )
                                details += "HomeEmail : " + homeEmail + "\n";
                            if(workEmail != null && !workEmail.equals("") )
                                details += "WorkEmail : " + workEmail + "\n";
                            if(companyName != null && !companyName.equals("") )
                                details += "CompanyName : " + companyName + "\n";
                            if(title != null && !title.equals("") )
                                details += "Title : " + title + "\n";

                            // Adding id, display name, path to photo and other details to cursor
                            mMatrixCursor.addRow(new Object[]{ Long.toString(contactId),displayName,photoPath,details});
                        }
                    }while(contactsCursor.moveToNext());
                }


                return mMatrixCursor;
            }

            ///////////////////////////////////////////////////////////

            @Override
            protected void onPostExecute(Cursor result) {
                // Setting the cursor containing contacts to listview
                Log.i(CAT, "Finalizando AsynkTask");
                mAdapter.swapCursor(result);
                progressDialog.dismiss();

                dataFinal = Calendar.getInstance();

                long diferenca = dataFinal.getTimeInMillis() - dataInicial.getTimeInMillis();

                Toast.makeText(MainActivity.this, "Tempo decorrido: " + diferenca , Toast.LENGTH_LONG).show();

                Toast.makeText(MainActivity.this, "Quantidade de Contatos: " + quantidade, Toast.LENGTH_SHORT).show();
            }


        }
    }