Contact List With Checkbox - Part 1

Go To next Step.

• Create Project named ContactList.
• Add following permission in android menifest file.

<uses-permission android:name="android.permission.READ_CONTACTS" />

• Add Following Code in MainActivity.java file

MainActivity.java

import java.util.ArrayList;

import android.app.Activity;

import android.app.ProgressDialog;

import android.content.ContentResolver;

import android.content.Context;

import android.content.Intent;

import android.database.Cursor;

import android.net.Uri;

import android.os.AsyncTask;

import android.os.Bundle;

import android.provider.ContactsContract;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.ViewGroup;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.CheckBox;

import android.widget.ImageView;

import android.widget.ListView;

import android.widget.TextView;

import android.widget.Toast;

public class MainActivity extends Activity {

MyCustomAdapter dataAdapter = null;

Context context = this;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

new LongOperation().execute();

checkButtonClick();

}

private class MyCustomAdapter extends ArrayAdapter<Phonebook> {

private ArrayList<Phonebook> phonebookList;

public MyCustomAdapter(Context context, int textViewResourceId,

ArrayList<Phonebook> pbList) {

super(context, textViewResourceId, pbList);

this.phonebookList = new ArrayList<Phonebook>();

this.phonebookList.addAll(pbList);

}

private class ViewHolder {

TextView name, number;

CheckBox selected;

ImageView imgView;

}

@Override

public View getView(int position, View convertView, ViewGroup parent) {

ViewHolder holder = null;

Log.v("ConvertView", String.valueOf(position));

if (convertView == null) {

LayoutInflater vi = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);

convertView = vi.inflate(R.layout.blacklist_layout, null);

holder = new ViewHolder();

holder.name = (TextView) convertView.findViewById(R.id.tvName);

holder.number = (TextView) convertView

.findViewById(R.id.tvNumber);

holder.selected = (CheckBox) convertView

.findViewById(R.id.checkBox1);

holder.imgView = (ImageView) convertView

.findViewById(R.id.imgView);

convertView.setTag(holder);

holder.selected.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {

CheckBox cb = (CheckBox) v;

Phonebook _state = (Phonebook) cb.getTag();

_state.setChecked(cb.isChecked());

}

});

} else {

holder = (ViewHolder) convertView.getTag();

}

Phonebook state = phonebookList.get(position);

holder.name.setText(state.getName());

holder.number.setText(state.getNumber());

holder.selected.setChecked(state.isChecked());

Log.v("getImgUri", "" + state.getImgUri());

holder.imgView.setImageURI(state.getImgUri());

if (holder.imgView.getDrawable() == null) {

holder.imgView.setImageResource(R.drawable.ic_launcher);

}

holder.selected.setTag(state);

return convertView;

}

}

private void checkButtonClick() {

Button myButton = (Button) findViewById(R.id.findSelected);

myButton.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

ArrayList<Phonebook> stateList = dataAdapter.phonebookList;

StringBuffer sb = new StringBuffer();

for (int i = 0; i < stateList.size(); i++) {

Phonebook state = stateList.get(i);

if (state.isChecked()) {

//Get selected contact information

//sb.append("\nImage URI:" + state.getImgUri().toString());

sb.append("\nName:" + state.getName());

sb.append("\nNumber:" + state.getNumber());

sb.append("\n-----");

}

}

Toast.makeText(context, ":" + sb.toString(), Toast.LENGTH_LONG)

.show();

}

});

}

ProgressDialog mProgressDialog;

Intent i;

private class LongOperation extends AsyncTask<Void, Void, Void> {

@Override

protected Void doInBackground(Void... params) {

runOnUiThread(new Runnable() {

@Override

public void run() {

ArrayList<Phonebook> phonebookList = new ArrayList<Phonebook>();

ContentResolver cr = getContentResolver();

Cursor cur = cr.query(

ContactsContract.Contacts.CONTENT_URI, null, null,

null, null);

if (cur.getCount() > 0) {

while (cur.moveToNext()) {

String id = cur

.getString(cur

.getColumnIndex(ContactsContract.Contacts._ID));

String name = cur

.getString(cur

.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));

if (Integer

.parseInt(cur.getString(cur

.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {

// get the phone number

Cursor pCur = cr

.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,

null,

ContactsContract.CommonDataKinds.Phone.CONTACT_ID

+ " = ?",

new String[] { id }, null);

while (pCur.moveToNext()) {

String phone = pCur

.getString(pCur

.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));

Uri uri = Utils

.getPhotoUri(

Long.parseLong(Utils

.fetchContactIdFromPhoneNumber(

phone,

context)),

context);

// ---------------------------------------------------------------------------

Phonebook _states = new Phonebook(name,

phone, false, uri);

phonebookList.add(_states);

// ---------------------------------------------------------------------------

}

pCur.close();

}

}

// create an ArrayAdaptar from the String Array

dataAdapter = new MyCustomAdapter(MainActivity.this,

R.layout.blacklist_layout, phonebookList);

ListView listView = (ListView) findViewById(R.id.listView1);

// Assign adapter to ListView

listView.setAdapter(dataAdapter);

listView.setOnItemClickListener(new OnItemClickListener() {

public void onItemClick(AdapterView<?> parent,

View view, int position, long id) {

}

});

}

}

});

return null;

}

@Override

protected void onPostExecute(Void result) {

if (mProgressDialog.isShowing()) {

mProgressDialog.dismiss();

}

}

@Override

protected void onPreExecute() {

ShowLoading();

}

@Override

protected void onProgressUpdate(Void... values) {

}

}

private void ShowLoading() {

mProgressDialog = new ProgressDialog(this);

mProgressDialog.setMessage("Loading Contacts ....");

mProgressDialog.setIndeterminate(false);

mProgressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);

mProgressDialog.setCancelable(false);

mProgressDialog.show();

}

}

• Add XML code in layout file, activity_main.xml

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:background="#fff"

    android:gravity="center"

    android:orientation="vertical" >

    <LinearLayout

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:background="#000"

        android:gravity="center"

        android:orientation="horizontal" >

        <TextView

            style="@style/titlebar_textview"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_weight="0.5"

            android:textSize="18dp"

            android:text="Contacts" />

        <Button

            android:id="@+id/findSelected"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_margin="5dp"

            android:text="Save"

            android:textColor="#ffffff" />

    </LinearLayout>

    <ListView

        android:id="@+id/listView1"

        android:layout_width="fill_parent"

        android:layout_height="fill_parent"

        android:divider="#BC0061"

        android:dividerHeight="2dp"

        android:background="@android:color/transparent"

        android:cacheColorHint="@android:color/transparent"

        android:padding="10dp" />

</LinearLayout>

After Added above code you will get error in some code but don't worry.Go to step 2 and add remaining code.

Go To next Step.