Activity as a dialog box in android

• Create project named ActivityAsDialog.
• Add following code in activity_main.xml layout file.

activity_main.xml

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

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:background="@drawable/border_t"

    android:padding="20dp"

    android:orientation="vertical" >

    

    <TextView

        android:id="@+id/tvsmsNo"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="SMS No"

        android:textSize="28dp"

        android:lines="1"

        android:textColor="#fff" />

    <TextView

        android:id="@+id/tvsmsBody"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:textSize="18dp"

        android:layout_marginTop="15dp"

        android:text="Body"

        android:maxLines="10"

        android:textColor="#fff" />

    <Button

        android:id="@+id/btnOk"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="OK"

        android:textSize="28dp"

        android:padding="14dp"

        android:layout_marginTop="15dp"

        android:scrollbars="vertical"

        android:layout_gravity="center" />

    

</LinearLayout>

NOTE: Change root linear layout background "#000000" or set your image.Otherwise it will throw Exception - NoResourceFound.

• Add following code in MainActivity.java file.

MainActivity.java

public class MainActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

TextView tvNo = (TextView)findViewById(R.id.tvsmsNo);

TextView tvBody = (TextView)findViewById(R.id.tvsmsBody);

Button btnOk = (Button)findViewById(R.id.btnOk);

String body = "Hi, How are you?";

tvNo.setText("SMS:9876543210");

tvBody.setText(body);

tvBody.setMovementMethod(new ScrollingMovementMethod());

btnOk.setOnClickListener(new OnClickListener() {

public void onClick(View v) {

MainActivity.this.finish();

}

});

}

}

• Now Add following code in res/values/styles.xml file.

styles.xml

<style name="Theme.UserDialog" parent="android:style/Theme.Dialog">

        <item name="android:windowFrame">@null</item>

        <item name="android:windowIsFloating">true</item>

        <item name="android:windowIsTranslucent">true</item>

        <item name="android:windowNoTitle">true</item>

        <item name="android:background">@android:color/transparent</item>

        <item name="android:windowBackground">@android:color/transparent</item>

    </style>

    

• At Last Change your activity theme in menifest.xml as below.

Menifest.xml

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

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

    package="com.example.activityasadialogbox"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="8"

        android:targetSdkVersion="17" />

    <application

        android:allowBackup="true"

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/Theme.UserDialog" >

        <activity

            android:name="com.example.activityasadialogbox.MainActivity"

            android:label="@string/app_name" >

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

</manifest>

• Done ! Now Run project.

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 !

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FTP Multiple files download in android

Here is the full source code,To Connect,authenticate and get files from FTP Server.Below requirements are needed for successfully connections.

Requirements:

1. FTP server URL
2. Username and Password

Steps:

1. First of all we need to connect the FTP server using its URL.
2. after successfully connection you need to authenticate and access your files.
3. After login you can get all files and directories list.
4. Now the main part is to get files one by one and save in your local device.

Here is the full source code for this operation, check below source code carefully.

import java.io.File;

import java.io.FileOutputStream;

import java.net.InetAddress;

import org.apache.commons.net.ftp.FTP;

import org.apache.commons.net.ftp.FTPClient;

import org.apache.commons.net.ftp.FTPFile;

import android.content.Context;

import android.os.Environment;

import android.util.Log;

import android.widget.Toast;

public class Downloads implements Runnable{

String TAG = "Downloads";

int fl = 0;

Context c ;

public Downloads(Context context) {

try {

final FTPClient ftp = new FTPClient();

final File dir = new File(Environment.getExternalStorageDirectory()

+ "/Android_guide");

if (!dir.exists()) {

dir.mkdir();

}

FTPFile[] filesList = null;

                        //FTP Server connection

ftp.connect(InetAddress.getByName("FTP file URL"));

//FTP username and password authentication

                        ftp.login("Username", "Password");

ftp.enterLocalPassiveMode();

//To change directory of FTP Server 

                        // ftp.changeWorkingDirectory("/");

filesList = ftp.listFiles("");

ftp.setFileType(FTP.BINARY_FILE_TYPE);

Log.v("Coneection and login", "Successfully");

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

while (fl < filesList.length) {

try {

Log.v("File name", filesList[fl].getName());

boolean status = false;

try {

                          FileOutputStream desFileStream = new FileOutputStream(

dir+ dir.separator+ filesList[fl].getName());

status = ftp.retrieveFile(filesList[fl].getName(),desFileStream);

Log.v("status", "" + status);

desFileStream.close();

} catch (Exception e) {

e.printStackTrace();

}

} catch (Exception e) {

              e.printStackTrace();

}

fl++;

}

ftp.logout();

ftp.disconnect();

} catch (Exception e) {

e.printStackTrace();

}

}

• Thats it. But dont forget to give permission for WRITE EXTERNAL STORAGE

Add following permission in android menifest file.

android.permission.WRITE_EXTERNAL_STORAGE

To configure your project with FTP, You need to download following libraries.

1. org.apache.commons.net_2.0.0.v200905272248.jar
2. commons-net-1.4.1.jar

Download above libraries Here

Seekbar in android

Here is the full tutorial for seekbar in android.It is used to set range of value.You can also set background image of seekbar for some value.

Here is the tutorial for seekbar,It displays the value of seekbar in Edittext and also change the color of seekbar.

Source Code:

• Create one project and copy below code in activity_main.xml file

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:orientation="horizontal"

    android:gravity="center"

    android:padding="20dp" >

    <SeekBar

        android:id="@+id/seek_bar"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_weight="1.71"

        android:max="100"

        android:progress="0" />

    <EditText

        android:id="@+id/et"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_weight="0.21" />

</LinearLayout>

• Write below code in MainActivity.java file.

MainActivity.java

import android.app.Activity;

import android.graphics.Color;

import android.os.Bundle;

import android.widget.EditText;

import android.widget.SeekBar;

import android.widget.SeekBar.OnSeekBarChangeListener;

public class MainActivity extends Activity {

SeekBar sb;

EditText et;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

sb = (SeekBar)findViewById(R.id.seek_bar);

et= (EditText)findViewById(R.id.et);

sb.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

@Override

public void onStopTrackingTouch(SeekBar seekBar) {}

@Override

public void onStartTrackingTouch(SeekBar seekBar) {}

@Override

public void onProgressChanged(SeekBar seekBar, int progress,

boolean fromUser) {

et.setText(""+progress);

if(progress>=50 && progress<70){

sb.setBackgroundColor(Color.RED);

}else if(progress>=70){

sb.setBackgroundColor(Color.YELLOW);

}else if(progress<50){

sb.setBackgroundColor(Color.TRANSPARENT);

}

}

});

}

}

• That's It. Now run the project and see the output.

Download file in Android application

You can download files in your android application without UI freeze.If your application has download file then you have to use threading or AsyncTask function.Which process in back end and without freeze the UI.

Here is the full tutorial,How to set download file function without freeze the UI.

• First of all create new project named it 'Download file'.
• Open activity_main.xml file and add below code in it.

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:orientation="vertical" >

    <Button android:id="@+id/btnProgressBar"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="Download File"

        android:layout_marginTop="50dip"/>

</LinearLayout>

• Now Open MainActivity.java file and add below code.

MainActivity.java

public class MainActivity extends Activity {

Button btnShowProgress;

private ProgressDialog pDialog;

public static final int progress_bar_type = 0; 

private static String file_url = "https://docs.google.com/uc?export=download&id=0B9w-wpPugvRfUUZDdWhtNU5qN1k";

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

btnShowProgress = (Button) findViewById(R.id.btnProgressBar);

btnShowProgress.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

new DownloadFileFromURL().execute(file_url);

}

});

}

@Override

protected Dialog onCreateDialog(int id) {

switch (id) {

case progress_bar_type:

pDialog = new ProgressDialog(this);

pDialog.setMessage("Downloading file. Please wait...");

pDialog.setIndeterminate(false);

pDialog.setMax(100);

pDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);

pDialog.setCancelable(true);

pDialog.show();

return pDialog;

default:

return null;

}

}

class DownloadFileFromURL extends AsyncTask<String, String, String> {

@Override

protected void onPreExecute() {

super.onPreExecute();

showDialog(progress_bar_type);

}

@Override

protected String doInBackground(String... f_url) {

int count;

       try {

           URL url = new URL(f_url[0]);

           URLConnection conection = url.openConnection();

           conection.connect();

           // getting file length

           int lenghtOfFile = conection.getContentLength();

           // input stream to read file - with 8k buffer

           InputStream input = new BufferedInputStream(url.openStream(), 8192);

           

           // Output stream to write file

           OutputStream output = new FileOutputStream("/sdcard/downloadedfile.pdf");

           byte data[] = new byte[1024];

           long total = 0;

           while ((count = input.read(data)) != -1) {

               total += count;

               // publishing the progress....

               // After this onProgressUpdate will be called

               publishProgress(""+(int)((total*100)/lenghtOfFile));

               

               // writing data to file

               output.write(data, 0, count);

           }

           // flushing output

           output.flush();

           

           // closing streams

           output.close();

           input.close();

           

       } catch (Exception e) {

        Log.e("Error: ", e.getMessage());

       }

       

       return null;

}

protected void onProgressUpdate(String... progress) {

// setting progress percentage

            pDialog.setProgress(Integer.parseInt(progress[0]));

       }

@Override

protected void onPostExecute(String file_url) {

// dismiss the dialog after the file was downloaded

dismissDialog(progress_bar_type);

// Displaying downloaded image into image view

// Reading image path from sdcard

String imagePath = Environment.getExternalStorageDirectory().toString() + "/downloadedfile.pdf";

}

}

}

• Add Internet and Write Eternal Storage permissions in AndroidMenifest file.

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

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