Android Tutorials for Beginners

Saturday, August 24, 2013

Android Custom ListView

We can customize the ListView and can add TextView, ImageView, Buttons etc.

Android Custom ListView Example

In this example we have populated our ListView with Custom Adapter

ListView can also be populated by ArrayAdapter, Database, ArrayList etc
In this post I will describe how to populate ListView using a Custom Adapter.

Have a look at my previous post
Populating ListView with Database
Populating ListView with ArrayList

In this example I have created a listView and populated it with Custom Adapter.
Each of the ListView item contain two views
TextView SMS Sender : to show SMS Sender Number
TextView SMSBody : to show the SMS Body/content

Here the ListView shows the all the SMSes with Sender Number and SMSBody.

What we need to do ..
Create a Custom Adapter
and add/set the adapter to ListView.

Add the following permission in your manifest file to read the SMS..
<uses-permission android:name="android.permission.READ_SMS"/>
<uses-permission android:name="android.permission.WRITE_SMS"/>

listview_activity_main.xml

listview_each_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/textViewSMSSender"
        android:paddingLeft="2dp"
        android:textSize="20dp"
        android:textStyle="bold"
        android:textColor="#0000FF"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TextView" />

    <TextView
        android:id="@+id/textViewMessageBody"
        android:paddingLeft="5dp"
        android:textColor="#5C002E"
        android:textSize="17dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TextView" />

</LinearLayout>

</LinearLayout>

ListViewMainActivity.java

public class ListViewMainActivity extends Activity
{
            ListView listViewSMS;
            Cursor cursor;
            SMSListAdapter smsListAdapter;
            Context context;
            @Override
            protected void onCreate(Bundle savedInstanceState)
            {
                    super.onCreate(savedInstanceState);
                    setContentView(R.layout.listview_activity_main);

                    context=this;
                    listViewSMS=(ListView)findViewById(R.id.listViewSMS);

                    cursor = getContentResolver().query(Uri.parse("content://sms/inbox"), null, null, null, null);

                    // Create the Adapter
                    smsListAdapter=new SMSListAdapter(this,cursor);

                    // Set The Adapter to ListView
                    listViewSMS.setAdapter(smsListAdapter);

                    // to handle click event on listView item
                    listViewSMS.setOnItemClickListener(new OnItemClickListener()
                    {
                            public void onItemClick(AdapterView<?> arg0, View v,int position, long arg3)
                            {
                                // when user clicks on ListView Item , onItemClick is called
                                // with position and View of the item which is clicked
                                // we can use the position parameter to get index of clicked item
                                TextView textViewSMSSender=(TextView)v.findViewById(R.id.textViewSMSSender);
                                TextView textViewSMSBody=(TextView)v.findViewById(R.id.textViewMessageBody);
                                String smsSender=textViewSMSSender.getText().toString();
                                String smsBody=textViewSMSBody.getText().toString();

                                // Show The Dialog with Selected SMS
                                AlertDialog dialog = new AlertDialog.Builder(context).create();
                                dialog.setTitle("SMS From : "+smsSender);
                                dialog.setIcon(android.R.drawable.ic_dialog_info);
                                dialog.setMessage(smsBody);
                                dialog.setButton(DialogInterface.BUTTON_POSITIVE, "OK",
                                        new DialogInterface.OnClickListener() {
                                    public void onClick(DialogInterface dialog, int which)
                                    {

                                            dialog.dismiss();
                                            return;
                                }
                                });
                                dialog.show();
                            }
                        });

            }
}

SMSListAdapter.java : The Custom Adapter

public class SMSListAdapter extends BaseAdapter
{

    private Context mContext;
    Cursor cursor;
    public SMSListAdapter(Context context,Cursor cur)
    {
            super();
            mContext=context;
            cursor=cur;

    }

    public int getCount()
    {
        // return the number of records in cursor
        return cursor.getCount();
    }

    // getView method is called for each item of ListView
    public View getView(int position, View view, ViewGroup parent)
    {
                    // inflate the layout for each item of listView
                    LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                    view = inflater.inflate(R.layout.listview_each_item, null);

                    // move the cursor to required position
                    cursor.moveToPosition(position);

                    // fetch the sender number and sms body from cursor
                    String senderNumber=cursor.getString(cursor.getColumnIndex("address"));
                    String smsBody=cursor.getString(cursor.getColumnIndex("body"));

                    // get the reference of textViews
                    TextView textViewConatctNumber=(TextView)view.findViewById(R.id.textViewSMSSender);
                    TextView textViewSMSBody=(TextView)view.findViewById(R.id.textViewMessageBody);

                    // Set the Sender number and smsBody to respective TextViews
                    textViewConatctNumber.setText(senderNumber);
                    textViewSMSBody.setText(smsBody);


                    return view;
    }

    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return position;
    }

    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return position;
    }
}

Wednesday, August 7, 2013

Most Viewed Android Topics

Friday, August 2, 2013

Android Permission List With Example

Call Related Permissions

<uses-permission android:name="android.permission.CALL_PHONE" />
Allows an application to initiate a phone call without going through the Dialer user interface for the user to confirm the call being placed.

<uses-permission android:name="android.permission.CALL_PRIVILEGED" />
Allows an application to call any phone number, including emergency numbers, without going through the Dialer user interface for the user to confirm the call being placed.

<uses-permission android:name="com.android.voicemail.permission.ADD_VOICEMAIL" />
Allows an application to add voicemails into the system.

<uses-permission android:name="android.permission.READ_PHONE_STATE" />
Allows read only access to phone state. You can get states like "Phone Ringing", "Call Received" etc using this permission.

Follow the post for running Example of this Permission

<uses-permission android:name="android.permission.READ_CALL_LOG" />
Allows an application to read the user's call log . You can get the information like phone number, name, call duration, call type(incoming, outgoing, missed call) etc

SMS/MMS related permissions

<uses-permission android:name="android.permission.RECEIVE_MMS" />
Allows an application to monitor incoming MMS messages, to record or perform processing on them.

<uses-permission android:name="android.permission.RECEIVE_SMS" />
This permission allows an application to Receive the SMS

Follow the post for running Example of RECEIVE_SMS Permission

<uses-permission android:name="android.permission.READ_SMS" />
This permission allows you read the SMS ,and get SMS Sender's number SMS Body, Sent time etc.

Follow the post for running Example of READ_SMS Permission

<uses-permission android:name="android.permission.SEND_SMS" />
This permission allows an application to Recive the SMS

Follow the post for running Example of SEND_SMS Permission

Network/Internet/Location related permission

<uses-permission android:name="android.permission.INTERNET" />
Allows applications to open network sockets.With this permission your application can use 2G/3G internet .

Follow the post for running Example of INTERNET Permission

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
Allows an app to access approximate location derived from network location sources such as cell towers and Wi-Fi.

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
Allows an app to access precise location from location sources such as GPS,
cell towers, and Wi-Fi.

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
Allows applications to access information about networks

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
Allows applications to access information about Wi-Fi networks

Media Related Permissions

<uses-permission android:name="android.permission.CAMERA" />
Required to be able to access the camera device

<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
Allows an application to modify global audio settings

<uses-permission android:name="android.permission.RECORD_AUDIO" />
this permision allows you to record some audio or sound

Phonebook Related Permissions:

<uses-permission android:name="android.permission.READ_CONTACTS" />
Allows an application to read the user's contacts data.You can get Name, Number, etc of a Saved Contact

Follow the post for running Example of this Permission

<uses-permission android:name="android.permission.WRITE_CONTACTS" />
Allows an application to add a new Contact in Phonebook

<uses-permission android:name="android.permission.READ_PROFILE" />
Allows an application to read the user's personal profile data.

SD Card related Permissions

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
Allows an application to read from external storage/SD card.

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
Allows an application to write to external storage

Follow the post for running Example of this Permission

Other Important Manifest Permissions

<uses-permission android:name="android.permission.BATTERY_STATS" />
Allows an application to collect battery statistics

<uses-permission android:name="android.permission.BLUETOOTH" />
Allows applications to connect to paired bluetooth devices

<uses-permission android:name="android.permission.READ_CALENDAR" />
Allows an application to read the user's calendar data.

<uses-permission android:name="com.android.browser.permission.READ_HISTORY_BOOKMARKS" />
Allows an application to read (but not write) the user's browsing history and bookmarks

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
Allows an application to receive Boot_Completed broadcast

Follow the post for running Example of this Permission

<uses-permission android:name="com.android.alarm.permission.SET_ALARM" />
Allows an application to broadcast an Intent to set an alarm for the user.

Follow the post for running Example of this SET_ALARM Permission

<uses-permission android:name="android.permission.SET_WALLPAPER" />
Allows an Application to set the Wallpaper
Running Example : How to Set an Image as Wallpaper.

<uses-permission android:name="android.permission.VIBRATE" />
Allows an application to Vibrate the phone

Follow the post for running Example of VIBRATE Permission

New Advance Topics:                   Android LiveWallpaer Tutorial
Android ImageSwitcher                  Android TextSwitcher                Android ViewFlipper
Android Gesture Detector         Handling/Detecting Swipe Events              Gradient Drawable
Detecting Missed Calls              Hide Title Bar                             GridView Animation
Android AlarmManager                 Android BootReceiver                   Vibrate Phone In a Desirable Pattern
Developing for Different Screen Sizes     Showing Toast for Longer Time       Publishing your App
How to publish Android App on Google Play
Android TextWatcher                               Android ExpandableListView

Beginning With Android
Android : Introduction(What is Android)                                                Configuring Eclipse for Android Development
   Creating Your First Android Project                   Understanding Android Manifest File of your android app

Advance Android Topics                                                            Customizing Android Views

Customizing Toast In Android Customizing Radio Buttons

Showing Toast for Longer Time Customizing Checkboxes In Android

Customizing the Display Time of Toast Customizing ProgressBar

Using TimePickerDialog and DatePickerDialog In android Customizing Toast In Android

Animating A Button In Android

Populating ListView With DataBase Android Animation

Increasin Size of Checkboxes Using Android ImageSwitcher

Android ProgressBar Using Android TextSwitcher

Designing For Different Screen Sizes GridView Animation

Handling Keyboard Events Animating A Button In Android

Alarm Manager
Android AlarmManger
Scheduling Task Using AlarmManger

Working With Layouts                                                                Working With Views

Understanding Layouts in Android                                                   Using Buttons and EditText in Android
Working with Linear Layout (With Example)                                     Using CheckBoxes in Android
Nested Linear Layout (With Example)                                              Using AutoCompleteTextView in Android                                                                                          Grid View
Relative Layout In Android                                                               ListView
Table Layout                                                                                   Android ProgressBar
Frame Layout(With Example)                                                          Customizing ProgressBar
Absolute Layout                                                                             Customizing Radio Buttons
Grid Layout                                                                                    Customizing Checkboxes In Android

Android Advance Views
Android Spinner                                                                           Android GalleryView
Android TabWidget                                                                      Android ExpandableListView

Android Components                                                                 Dialogs In Android

Activity In Android                                                                    Working With Alert Dialog
Activity Life Cycle                                                                    Adding Radio Buttons In Dialog
Starting Activity For Result                                                     Adding Check Boxes In Dialog
Sending Data from One Activity to Other in Android                Creating Customized Dialogs in Android
Returning Result from Activity                                               Creating Dialog To Collect User Input
Android : Service                                                                     DatePicker and TimePickerDialog
BroadcastReceiver                                                                   Using TimePickerDialog and DatePickerDialog In android

Menus In Android                                                                ListView:
Creating Option Menu                                 Populating ListView With DataBase
Creating Context Menu In Android            Populating ListView with ArrayList
                                                                                               ListView with Custom Adapter

Toast                                                                                      Working With SMS
Customizing Toast In Android                                               How to Send SMS in Android
Customizing the Display Time of Toast                                  How To Receive SMS
Customizing Toast At Runtime                                                Accessing Inbox In Android
Adding Image in Toast
Showing Toast for Longer Time

TelephonyManager                                                            Storage: Storing Data In Android
Using Telephony Manager In Android                                SharedPreferences In Android
                                                                                              Reading and Writing files to Internal Stoarage

Working With Incoming Calls                                       DataBase :  Introduction of SQLiteDataBase
How To Handle Incoming Calls in Android                          Working With Database in Android
How to Forward an Incoming Call In Android                            Creating Table In Android
CALL States In Android                                                          Inserting, Deleting and Updating Records In Table in Android

Miscellaneous
Notifications In Android
How To Vibrate The Android Phone
Sending Email In Android
Opening a webpage In Browser
How to Access PhoneBook In Android
Prompt User Input with an AlertDialog
How to Hide Title Bar In Android
How to show an Activity in Landscape or Portrait Mode only.
How to Set an Image as Wallpaper.

Wednesday, July 31, 2013

Show Activity in Portrait or Landscape mode only

In Android, some times we need to show an Activity/Screen in portrait or Landscape mode only. Specially while developing game, we want a particular game to be played in Landscape or Portfrait mode only.

for this we need to set the android:screenOrientation attribute in manifest

To show the Screen/Activity in Landscape mode only

<activity android:name=".MainActivity"
android:screenOrientation="landscape"/>

To show the Screen/Activity in Portrait mode only.

<activity android:name=".MainActivity"
android:screenOrientation="portrait"/>

How to Set WallPaper in Android

In this tutorial I will explain how to set Wallpaper.

To Set the Wallpaper we must declare following permission in manifest file

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

If you use an Image to set as wallpaper, The image may not fit to the Screen, it may be smaller or larger than the device screen, To overcome this problem or if we want that Image should to the screen for all the devices with different screen sizes, we need to use DisplayMatrics.

// get the Image to as Bitmap
Bitmap bitmap = BitmapFactory.decodeStream(getResources().openRawResource(R.id.image));

                DisplayMetrics metrics = new DisplayMetrics();
                getWindowManager().getDefaultDisplay().getMetrics(metrics);
                // get the height and width of screen
                int height = metrics.heightPixels;
                int width = metrics.widthPixels;

                WallpaperManager wallpaperManager = WallpaperManager.getInstance(this);
                try {
                wallpaperManager.setBitmap(bitmap);

                wallpaperManager.suggestDesiredDimensions(width, height);
                    Toast.makeText(this, "Wallpaper Set", Toast.LENGTH_SHORT).show();
                } catch (IOException e) {
                e.printStackTrace();
                }

Tuesday, July 30, 2013

Important Android Manifest Permission Details

Call Related Permissions

SMS/MMS related permissions

Network/Internet/Location related permission

Media Related Permissions

Phonebook Related Permissions:

SD Card related Permissions

Other Important Manifest Permissions

Common Android Topics

How to Hide Title Bar In Android
How to show an Activity in Landscape or Portrait Mode only.
How to open Web Browser with given http link.
How to Send an EMail
How to Set an Image as Wallpaper.
Android Permission List With Example

Monday, July 29, 2013

Fill or Populate ListView with SQLiteDataBase

In this post I will describe how to connect ListView with database.
ListView can be populated by ArrayAdapter, Custom Adapter, ArrayList etc

Have a look at my previous post
Populating ListView with Custom Adapter
Populating ListView with ArrayList

ListView with DataBase Example

In this example I have created a listView and populated it with DataBAse.
Each of the ListView item contain two views
TextView SMS Sender : to show SMS Sender Number
TextView SMSBody : to show the SMS Body/content

Here the ListView shows the all the SMSes with Sender Number and SMSBody.

Add the following permission in your manifest file to read the SMS..
<uses-permission android:name="android.permission.READ_SMS"/>
<uses-permission android:name="android.permission.WRITE_SMS"/>

listview_activity_main.xml

listview_each_item.xml

ListViewWithDatabaseActivity

public class ListViewWithDatabaseActivity extends Activity
{


        ListView listViewPhoneBook;
        Context context;
         @Override
        protected void onCreate(Bundle savedInstanceState)
         {
                 super.onCreate(savedInstanceState);
                 setContentView(R.layout.listview_activity_main);
                 context=this;
                 //get the ListView Reference
                 listViewSMS=(ListView)findViewById(R.id.listViewSMS);


                 //arrayColumns is the column name in your cursor where you're getting the data
                 // here we are displaying SMSsender Number i.e. address and SMSBody i.e. body
                 String[] arrayColumns = new String[]{"address","body"};
                 //arrayViewID contains the id of textViews
                 // you can add more Views as per Requirement
                 // textViewSMSSender is connected to "address" of arrayColumns
                 // textViewMessageBody is connected to "body"of arrayColumns
                 int[] arrayViewIDs = new int[]{R.id.textViewSMSSender,R.id.textViewMessageBody};


                 Cursor cursor;

                   cursor = getContentResolver().query(Uri.parse("content://sms/inbox"), null, null, null, null);

                // create an Adapter with arguments layoutID, Cursor, Array Of Columns, and Array of ViewIds which is to be Populated

                 SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.listview_each_item, cursor, arrayColumns, arrayViewIDs);
                 listViewSMS.setAdapter(adapter);



                 // To handle the click on List View Item
                 listViewSMS.setOnItemClickListener(new OnItemClickListener()
                {

                                public void onItemClick(AdapterView<?> arg0, View v,int position, long arg3)
                                {
                                    // when user clicks on ListView Item , onItemClick is called
                                    // with position and View of the item which is clicked
                                    // we can use the position parameter to get index of clicked item
                                    TextView textViewSMSSender=(TextView)v.findViewById(R.id.textViewSMSSender);
                                    TextView textViewSMSBody=(TextView)v.findViewById(R.id.textViewMessageBody);
                                    String smsSender=textViewSMSSender.getText().toString();
                                    String smsBody=textViewSMSBody.getText().toString();

                                    // Show The Dialog with Selected SMS
                                    AlertDialog dialog = new AlertDialog.Builder(context).create();
                                    dialog.setTitle("SMS From : "+smsSender);
                                    dialog.setIcon(android.R.drawable.ic_dialog_info);
                                    dialog.setMessage(smsBody);
                                    dialog.setButton(DialogInterface.BUTTON_POSITIVE, "OK",
                                            new DialogInterface.OnClickListener() {
                                        public void onClick(DialogInterface dialog, int which)
                                        {

                                                dialog.dismiss();
                                                return;
                                    }
                                    });
                                    dialog.show();
                                }

                            });
             }
}

10 Tips to Increase Windows 10 Performnace

Saturday, August 24, 2013

Monday, August 12, 2013

Android Custom ListView Example

listview_activity_main.xml

listview_each_item.xml

ListViewMainActivity.java

SMSListAdapter.java : The Custom Adapter

Wednesday, August 7, 2013

Friday, August 2, 2013

Call Related Permissions

SMS/MMS related permissions

Network/Internet/Location related permission

Media Related Permissions

Phonebook Related Permissions:

SD Card related Permissions

Other Important Manifest Permissions

Wednesday, July 31, 2013

Tuesday, July 30, 2013

Call Related Permissions

SMS/MMS related permissions

Network/Internet/Location related permission

Media Related Permissions

Phonebook Related Permissions:

SD Card related Permissions

Other Important Manifest Permissions

Monday, July 29, 2013

ListView with DataBase Example

listview_activity_main.xml

listview_each_item.xml

ListViewWithDatabaseActivity