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.

Contact List With Checkbox - Part 2

Got To Previous Step.

• Create new Class file, named Phonebook.java.

Phonebook.java

package com.example.contactlist;

import android.net.Uri;

public class Phonebook {

String number = null,name = null;

boolean isChecked = false;

Uri imgUri = null;

public Phonebook(String name,String number,boolean selected,Uri uri){

super();

this.name = name;

this.imgUri = uri;

this.isChecked = selected;

this.number = number;

}

public String getNumber() {

return number;

}

public void setNumber(String number) {

this.number = number;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public boolean isChecked() {

return isChecked;

}

public void setChecked(boolean isChecked) {

this.isChecked = isChecked;

}

public Uri getImgUri() {

return imgUri;

}

public void setImgUri(Uri imgUri) {

this.imgUri = imgUri;

}

}

• Create another class file,named Utils.java

Utils.java

import android.content.ContentResolver;

import android.content.ContentUris;

import android.content.Context;

import android.database.Cursor;

import android.net.Uri;

import android.provider.ContactsContract;

import android.provider.ContactsContract.PhoneLookup;

public class Utils {

public static String fetchContactIdFromPhoneNumber(String phoneNumber,Context context) {

// TODO Auto-generated method stub

Uri uri = Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI,

Uri.encode(phoneNumber));

Cursor cFetch = context.getContentResolver().query(uri,

new String[] { PhoneLookup.DISPLAY_NAME, PhoneLookup._ID },

null, null, null);

String contactId = "";

if (cFetch.moveToFirst()) {

cFetch.moveToFirst();

contactId = cFetch

.getString(cFetch.getColumnIndex(PhoneLookup._ID));

}

System.out.println(contactId);

return contactId;

}

public static Uri getPhotoUri(long contactId,Context context) {

ContentResolver contentResolver = context.getContentResolver();

try {

Cursor cursor = contentResolver

.query(ContactsContract.Data.CONTENT_URI,

null,

ContactsContract.Data.CONTACT_ID

+ "="

+ contactId

+ " AND "

+ ContactsContract.Data.MIMETYPE

+ "='"

+ ContactsContract.CommonDataKinds.Photo.CONTENT_ITEM_TYPE

+ "'", null, null);

if (cursor != null) {

if (!cursor.moveToFirst()) {

return null; // no photo

}

} else {

return null; // error in cursor process

}

} catch (Exception e) {

e.printStackTrace();

return null;

}

Uri person = ContentUris.withAppendedId(

ContactsContract.Contacts.CONTENT_URI, contactId);

return Uri.withAppendedPath(person,

ContactsContract.Contacts.Photo.CONTENT_DIRECTORY);

}

}

• Create layout xml file in res/layout,named blacklist_layout.xml

blacklist_layout.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="wrap_content"

    android:gravity="center"

    android:orientation="horizontal"

    android:paddingLeft="3dip"

    android:paddingRight="3dip"

    android:paddingTop="3dip"

    android:paddingBottom="1dip" >

    <ImageView

        android:id="@+id/imgView"

        android:layout_width="70dp"

        android:layout_height="70dp"

        android:padding="5dp"

        android:src="@drawable/ic_launcher" />

    <LinearLayout

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_weight="1"

        android:gravity="left|center"

        android:orientation="vertical"

        android:padding="6dip" >

        <TextView

            android:id="@+id/tvName"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="Name"

            android:textStyle="bold"

            android:textSize="15dp"

            android:textColor="#000" />

        <TextView

            android:id="@+id/tvNumber"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="Number"

            android:textSize="15dp"

            android:textColor="#000" />

    </LinearLayout>

    <CheckBox

        android:id="@+id/checkBox1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:focusable="false"

        android:focusableInTouchMode="false"

        android:gravity="right"

        android:textColor="#B40404" />

</LinearLayout>

• Last but not the least, Add following code in styles.xml file.

<style name="titlebar_textview">

        <item name="android:textColor">#fff</item>

        <item name="android:textStyle">bold</item>

        <item name="android:padding">10dp</item>

    </style>

• Done ! Now Run Program.

Download Full Source Code:Download Here !

Build your first Application !

Welcome to Android application development.

This blog teaches you how to develop android application.Before you start,Be sure you have below tools setup.

1. Android SDK 
2. Eclipse any latest version integrated with android SDK
3. ADT plugin and SDK manager

Create a project with Eclipse JUNO:

• Click New  in the toolbar.
• Select Android > Android Application Project, and click Next Button.

• Enter Application Name, Project Name and Package name.

NOTE: Change Package name to upload application on Play store Account.

• Select Minimum Required SDK,Target SDK compile with and Theme and click Next Button.

• Do not change in Configure project window, and click Next Button.
• Configure Launcher Icon - Here you can set application icon in different way.

1. Select image file from system storage.
2. Clipart gives you default icons.
3. Text - It gives you to set text instead of image as a icon.
4.  You can also modify icon with Foreground scaling, shape and background color.Click Next Button.

• Create Activity - Choose "Blank Activity" and click Next Button.
• Blank Activity - You can change your first screen name.By default it is "Main Activity".
• At last Click Finish Button.