1.
Develope a program to send and receive mail
Ans-
Android Application that can be used to send email through your android application.
You can do so with the help of Intent with action as ACTION_SEND with extra fields:
● email id to which you want to send mail,
● the subject of the email and
● body of the email.
Basically Intent is a simple message object that is used to communicate between android
components such as activities, content providers, broadcast receivers, and services, here use
to send the email. This application basically contains one activity with EditText to take input of
email address, subject, and body of the email from the user and button to send that email.
Step 1: Create a New Project in Android Studio
Step 2: Working with the XML Files
<?xml version="1.0" encoding="utf-8"?>
<!-- Relative Layout -->
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<!-- Edit text for email id -->
<EditText
android:id="@+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentRight="true"
android:layout_marginTop="18dp"
android:layout_marginRight="22dp" />
<!-- Edit text for email subject -->
<EditText
android:id="@+id/editText2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/editText1"
android:layout_alignLeft="@+id/editText1"
android:layout_marginTop="20dp" />
<!-- Edit text for email body -->
<EditText
android:id="@+id/editText3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/editText2"
android:layout_alignLeft="@+id/editText2"
android:layout_marginTop="30dp" />
<!-- text Views for label -->
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/editText1"
android:layout_alignBottom="@+id/editText1"
android:layout_alignParentLeft="true"
android:text="Send To:"
android:textColor="#0F9D58" />
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/editText2"
android:layout_alignBottom="@+id/editText2"
android:layout_alignParentLeft="true"
android:text="Email Subject:"
android:textColor="#0F9D58" />
<TextView
android:id="@+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/editText3"
android:layout_alignBottom="@+id/editText3"
android:text="Email Body:"
android:textColor="#0F9D58" />
<!-- Button to send email -->
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/editText3"
android:layout_alignLeft="@+id/editText3"
android:layout_marginLeft="76dp"
android:layout_marginTop="20dp"
android:text="Send email!!" />
</RelativeLayout>
step 3: Working with the MainActivity File
In MainActivity Intent object is created and its action is defined to ACTION_SEND to send an
email, with Intent three extra fields are also added using the putExtra function. These fields
are: Email of receiver
● Subject of email
● Body of email
2. Develope a program for providing Bluetooth connectivity.
Ans-
Android provides Bluetooth API to perform these different operations.
Scan for other Bluetooth devices
Get a list of paired devices
Connect to other devices through service discovery
Android provides BluetoothAdapter class to communicate with Bluetooth. Create an
object of this calling by calling the static method getDefaultAdapter(). Its syntax is
given below.
private BluetoothAdapter BA;
BA = BluetoothAdapter.getDefaultAdapter();
In order to enable the Bluetooth of your device, call the intent with the following
Bluetooth constant ACTION_REQUEST_ENABLE. Its syntax is.
Intent turnOn = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(turnOn, 0);
Methods:
Once you enable the Bluetooth , you can get a list of paired devices by calling
getBondedDevices() method. It returns a set of bluetooth devices. Its syntax is.
private Set<BluetoothDevice>pairedDevices;
pairedDevices = BA.getBondedDevices();
3. program on Google Map location
Add the permissions to the app manifest
If approximate location is only needed for your app to function, then add the
ACCESS_COARSE_LOCATION permission to your app's manifest file:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.myapp" >
...
<uses-permission
android:name="android.permission.ACCESS_COARSE_LOCATION"/>
...
</manifest>
However, if precise location is needed, then add both ACCESS_COARSE_LOCATION
and ACCESS_FINE_LOCATION permissions to your app's manifest file:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.myapp" >
...
<uses-permissionandroid:name="android.permission.ACCESS_COARSE_LOCATION"/
>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
...
</manifest>
4. WAP to capture an image using camera
Ans-
The opening of the Camera from inside our app is achieved with the help of
the ACTION_IMAGE_CAPTURE Intent of MediaStore class.
Step 1: Create a New Project in Android Studio
Step 2: Working with the XML Files
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<!-- add Camera Button to open the Camera -->
<Button
android:id="@+id/camera_button"
android:layout_width="100dp"
android:layout_height="50dp"
android:layout_marginStart="150dp"
android:text="Camera" />
<!-- add ImageView to display the captured image -->
<ImageView
android:id="@+id/click_image"
android:layout_width="350dp"
android:layout_height="450dp"
android:layout_marginStart="30dp"
android:layout_marginTop="70dp"
android:layout_marginBottom="10dp" />
</RelativeLayout>
Step 3: Working with the MainActivity File
