Showing posts with label android examples. Show all posts
Showing posts with label android examples. Show all posts

Wednesday, 2 October 2013

Android : how to check if device has camera

// siddhu vydyabhushana // 5 comments
In Android, you can use PackageManager , hasSystemFeature() method to check if a device has camera, gps or other features.
See full example of using PackageManager in an activity class.
package com.mkyong.android;
 
import android.app.Activity;
import android.content.Context;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.util.Log;
 
public class FlashLightActivity extends Activity {
 
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		//setContentView(R.layout.main);
 
		Context context = this;
		PackageManager packageManager = context.getPackageManager();
 
		// if device support camera?
		if (packageManager.hasSystemFeature(PackageManager.FEATURE_CAMERA)) {
			//yes
			Log.i("camera", "This device has camera!");
		}else{
			//no
			Log.i("camera", "This device has no camera!");
		}
 
 
	}
}
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How to Send SMS Message Android

// siddhu vydyabhushana // 11 comments
n Android, you can use SmsManager API or device’s Built-in SMS application to send a SMS message. In this tutorial, we show you two basic examples to send SMS message :
  1. SmsManager API
    	SmsManager smsManager = SmsManager.getDefault();
    	smsManager.sendTextMessage("phoneNo", null, "sms message", null, null);
  2. Built-in SMS application
    	Intent sendIntent = new Intent(Intent.ACTION_VIEW);
    	sendIntent.putExtra("sms_body", "default content"); 
    	sendIntent.setType("vnd.android-dir/mms-sms");
    	startActivity(sendIntent);
Of course, both need SEND_SMS permission.
<uses-permission android:name="android.permission.SEND_SMS" />
P.S This project is developed in Eclipse 3.7, and tested with Samsung Galaxy S2 (Android 2.3.3).
Note
The Built-in SMS application solution is the easiest way, because you let device handle everything for you.

1. SmsManager Example

Android layout file to textboxes (phone no, sms message) and button to send the SMS message.
File : res/layout/main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/linearLayout1"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
 
    <TextView
        android:id="@+id/textViewPhoneNo"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Enter Phone Number : "
        android:textAppearance="?android:attr/textAppearanceLarge" />
 
    <EditText
        android:id="@+id/editTextPhoneNo"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:phoneNumber="true" >
    </EditText>
 
    <TextView
        android:id="@+id/textViewSMS"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Enter SMS Message : "
        android:textAppearance="?android:attr/textAppearanceLarge" />
 
    <EditText
        android:id="@+id/editTextSMS"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:inputType="textMultiLine"
        android:lines="5"
        android:gravity="top" />
 
    <Button
        android:id="@+id/buttonSend"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Send" />
 
</LinearLayout>
File : SendSMSActivity.java – Activity to send SMS via SmsManager.
package com.mkyong.android;
 
import android.app.Activity;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
 
public class SendSMSActivity extends Activity {
 
	Button buttonSend;
	EditText textPhoneNo;
	EditText textSMS;
 
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
 
		buttonSend = (Button) findViewById(R.id.buttonSend);
		textPhoneNo = (EditText) findViewById(R.id.editTextPhoneNo);
		textSMS = (EditText) findViewById(R.id.editTextSMS);
 
		buttonSend.setOnClickListener(new OnClickListener() {
 
			@Override
			public void onClick(View v) {
 
			  String phoneNo = textPhoneNo.getText().toString();
			  String sms = textSMS.getText().toString();
 
			  try {
				SmsManager smsManager = SmsManager.getDefault();
				smsManager.sendTextMessage(phoneNo, null, sms, null, null);
				Toast.makeText(getApplicationContext(), "SMS Sent!",
							Toast.LENGTH_LONG).show();
			  } catch (Exception e) {
				Toast.makeText(getApplicationContext(),
					"SMS faild, please try again later!",
					Toast.LENGTH_LONG).show();
				e.printStackTrace();
			  }
 
			}
		});
	}
}
File : AndroidManifest.xml , need SEND_SMS permission.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.mkyong.android"
    android:versionCode="1"
    android:versionName="1.0" >
 
    <uses-sdk android:minSdkVersion="10" />
 
    <uses-permission android:name="android.permission.SEND_SMS" />
 
    <application
        android:debuggable="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:label="@string/app_name"
            android:name=".SendSMSActivity" >
            <intent-filter >
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
 
</manifest>
See demo :

2. Built-in SMS application Example

This example is using the device’s build-in SMS application to send out the SMS message.
File : res/layout/main.xml – A button only.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/linearLayout1"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
 
    <Button
        android:id="@+id/buttonSend"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Send" />
 
</LinearLayout>
File : SendSMSActivity.java – Activity class to use build-in SMS intent to send out the SMS message.
package com.mkyong.android;
 
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
 
public class SendSMSActivity extends Activity {
 
	Button buttonSend;
 
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
 
		buttonSend = (Button) findViewById(R.id.buttonSend);
 
		buttonSend.setOnClickListener(new OnClickListener() {
 
			@Override
			public void onClick(View v) {
 
				try {
 
				     Intent sendIntent = new Intent(Intent.ACTION_VIEW);
				     sendIntent.putExtra("sms_body", "default content"); 
				     sendIntent.setType("vnd.android-dir/mms-sms");
				     startActivity(sendIntent);
 
				} catch (Exception e) {
					Toast.makeText(getApplicationContext(),
						"SMS faild, please try again later!",
						Toast.LENGTH_LONG).show();
					e.printStackTrace();
				}
			}
		});
	}
}
See demo :
send sms via build-in sms application
send sms via build-in sms application

Download Source Code

Download it – 1. Android-Send-SMS-Example.zip (16 KB)
send sms message via smsmanager
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How to send email in android

// siddhu vydyabhushana // 8 comments
In Android, you can use Intent.ACTION_SEND to call an existing email client to send an Email.
See following code snippets :
	Intent email = new Intent(Intent.ACTION_SEND);
	email.putExtra(Intent.EXTRA_EMAIL, new String[]{"youremail@yahoo.com"});		  
	email.putExtra(Intent.EXTRA_SUBJECT, "subject");
	email.putExtra(Intent.EXTRA_TEXT, "message");
	email.setType("message/rfc822");
	startActivity(Intent.createChooser(email, "Choose an Email client :"));
P.S This project is developed in Eclipse 3.7, and tested with Samsung Galaxy S2 (Android 2.3.3).
Run & test on real device only.
If you run this on emulator, you will hit error message : “No application can perform this action“. This code only work on real device.

1. Android Layout

File : res/layout/main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/linearLayout1"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
 
    <TextView
        android:id="@+id/textViewPhoneNo"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="To : "
        android:textAppearance="?android:attr/textAppearanceLarge" />
 
    <EditText
        android:id="@+id/editTextTo"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:inputType="textEmailAddress" >
 
        <requestFocus />
 
    </EditText>
 
    <TextView
        android:id="@+id/textViewSubject"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Subject : "
        android:textAppearance="?android:attr/textAppearanceLarge" />
 
    <EditText
        android:id="@+id/editTextSubject"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
         >
    </EditText>
 
    <TextView
        android:id="@+id/textViewMessage"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Message : "
        android:textAppearance="?android:attr/textAppearanceLarge" />
 
    <EditText
        android:id="@+id/editTextMessage"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="top"
        android:inputType="textMultiLine"
        android:lines="5" />
 
    <Button
        android:id="@+id/buttonSend"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Send" />
 
</LinearLayout>

2. Activity

Full activity class to send an Email. Read the onClick() method, it should be self-explanatory.
package com.mkyong.android;
 
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
 
public class SendEmailActivity extends Activity {
 
	Button buttonSend;
	EditText textTo;
	EditText textSubject;
	EditText textMessage;
 
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
 
		buttonSend = (Button) findViewById(R.id.buttonSend);
		textTo = (EditText) findViewById(R.id.editTextTo);
		textSubject = (EditText) findViewById(R.id.editTextSubject);
		textMessage = (EditText) findViewById(R.id.editTextMessage);
 
		buttonSend.setOnClickListener(new OnClickListener() {
 
			@Override
			public void onClick(View v) {
 
			  String to = textTo.getText().toString();
			  String subject = textSubject.getText().toString();
			  String message = textMessage.getText().toString();
 
			  Intent email = new Intent(Intent.ACTION_SEND);
			  email.putExtra(Intent.EXTRA_EMAIL, new String[]{ to});
			  //email.putExtra(Intent.EXTRA_CC, new String[]{ to});
			  //email.putExtra(Intent.EXTRA_BCC, new String[]{to});
			  email.putExtra(Intent.EXTRA_SUBJECT, subject);
			  email.putExtra(Intent.EXTRA_TEXT, message);
 
			  //need this to prompts email client only
			  email.setType("message/rfc822");
 
			  startActivity(Intent.createChooser(email, "Choose an Email client :"));
 
			}
		});
	}
}

3. Demo

See default scree, fill in the detail, and click on the “send” button.
send email in android
It will prompts your existing Email client to select.
send email in android
In this case, i selected Gmail, and all previous filled in detail will be populated to Gmail client automatically.
send email in android
Note
Android does not provide API to send Email directly, you have to call the existing Email client to send Email.

Download Source Code

Download it – Android-Send-Email-Example.zip (16 KB)
 
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Wednesday, 25 September 2013

Upload a file to SERVER(Remore database) -Android Example

// siddhu vydyabhushana // 8 comments

 In this example uploading an image from sdcard to web server.
Steps :
      1.  place an image on sdcard.
      2.  place sdcard image path and image name in UploadToServer.java. ( see below )
      3.  create a php script (UploadToServer.php) at server. ( see below )
      4.  place php script path in UploadToServer.java. ( see below )
      5.  create folder name uploads on server where you have placed php script.
      6.  give permission 777 (read/write/execute) to uploads folder.

Project Structure :

 
Upload_file_project_sketch


Upload Image Sdcard View :

 
Upload_image_sdcard_path

File : AndroidManifest.xml


<?xml version="1.0" encoding="utf-8"?>
  <manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.androidexample.uploadtoserver"
      android:versionCode="1"
      android:versionName="1.0" >
   
      <uses-sdk
          android:minSdkVersion="8"/>
       
      <uses-permission android:name="android.permission.INTERNET"/>
   
      <application
          android:allowBackup="true"
          android:icon="@drawable/ic_launcher"
          android:label="@string/app_name"
          android:theme="@style/AppTheme" >
          <activity
              android:name="com.androidexample.uploadtoserver.UploadToServer"
              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>

File : res/layout/activity_upload_to_server.xml


<?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:orientation="vertical"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent"
     >
     <Button
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:text="Click To Upload File"
         android:id="@+id/uploadButton"
     />
       
     <TextView
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:text=""
         android:id="@+id/messageText"
         android:textColor="#000000"
         android:textStyle="bold"
     />
  </LinearLayout>

File : src/UploadToServer.java


import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
  
public class UploadToServer extends Activity {
     
    TextView messageText;
    Button uploadButton;
    int serverResponseCode = 0;
    ProgressDialog dialog = null;
        
    String upLoadServerUri = null;
     
    /**********  File Path *************/
    final String uploadFilePath = "/mnt/sdcard/";
    final String uploadFileName = "service_lifecycle.png";
     
    @Override
    public void onCreate(Bundle savedInstanceState) {
         
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_upload_to_server);
          
        uploadButton = (Button)findViewById(R.id.uploadButton);
        messageText  = (TextView)findViewById(R.id.messageText);
         
        messageText.setText("Uploading file path :- '/mnt/sdcard/"+uploadFileName+"'");
         
        /************* Php script path ****************/
        upLoadServerUri = "http://www.androidexample.com/media/UploadToServer.php";
         
        uploadButton.setOnClickListener(new OnClickListener() {           
            @Override
            public void onClick(View v) {
                 
                dialog = ProgressDialog.show(UploadToServer.this, "", "Uploading file...", true);
                 
                new Thread(new Runnable() {
                        public void run() {
                             runOnUiThread(new Runnable() {
                                    public void run() {
                                        messageText.setText("uploading started.....");
                                    }
                                });                     
                           
                             uploadFile(uploadFilePath + "" + uploadFileName);
                                                      
                        }
                      }).start();       
                }
            });
    }
      
    public int uploadFile(String sourceFileUri) {
           
           
          String fileName = sourceFileUri;
  
          HttpURLConnection conn = null;
          DataOutputStream dos = null
          String lineEnd = "\r\n";
          String twoHyphens = "--";
          String boundary = "*****";
          int bytesRead, bytesAvailable, bufferSize;
          byte[] buffer;
          int maxBufferSize = 1 * 1024 * 1024;
          File sourceFile = new File(sourceFileUri);
           
          if (!sourceFile.isFile()) {
               
               dialog.dismiss();
                
               Log.e("uploadFile", "Source File not exist :"
                                   +uploadFilePath + "" + uploadFileName);
                
               runOnUiThread(new Runnable() {
                   public void run() {
                       messageText.setText("Source File not exist :"
                               +uploadFilePath + "" + uploadFileName);
                   }
               });
                
               return 0;
            
          }
          else
          {
               try {
                    
                     // open a URL connection to the Servlet
                   FileInputStream fileInputStream = new FileInputStream(sourceFile);
                   URL url = new URL(upLoadServerUri);
                    
                   // Open a HTTP  connection to  the URL
                   conn = (HttpURLConnection) url.openConnection();
                   conn.setDoInput(true); // Allow Inputs
                   conn.setDoOutput(true); // Allow Outputs
                   conn.setUseCaches(false); // Don't use a Cached Copy
                   conn.setRequestMethod("POST");
                   conn.setRequestProperty("Connection", "Keep-Alive");
                   conn.setRequestProperty("ENCTYPE", "multipart/form-data");
                   conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
                   conn.setRequestProperty("uploaded_file", fileName);
                    
                   dos = new DataOutputStream(conn.getOutputStream());
          
                   dos.writeBytes(twoHyphens + boundary + lineEnd);
                   dos.writeBytes("Content-Disposition: form-data; name="uploaded_file";filename=""
                                             + fileName + """ + lineEnd);
                    
                   dos.writeBytes(lineEnd);
          
                   // create a buffer of  maximum size
                   bytesAvailable = fileInputStream.available();
          
                   bufferSize = Math.min(bytesAvailable, maxBufferSize);
                   buffer = new byte[bufferSize];
          
                   // read file and write it into form...
                   bytesRead = fileInputStream.read(buffer, 0, bufferSize); 
                      
                   while (bytesRead > 0) {
                        
                     dos.write(buffer, 0, bufferSize);
                     bytesAvailable = fileInputStream.available();
                     bufferSize = Math.min(bytesAvailable, maxBufferSize);
                     bytesRead = fileInputStream.read(buffer, 0, bufferSize);  
                      
                    }
          
                   // send multipart form data necesssary after file data...
                   dos.writeBytes(lineEnd);
                   dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
          
                   // Responses from the server (code and message)
                   serverResponseCode = conn.getResponseCode();
                   String serverResponseMessage = conn.getResponseMessage();
                     
                   Log.i("uploadFile", "HTTP Response is : "
                           + serverResponseMessage + ": " + serverResponseCode);
                    
                   if(serverResponseCode == 200){
                        
                       runOnUiThread(new Runnable() {
                            public void run() {
                                 
                                String msg = "File Upload Completed.\n\n See uploaded file here : \n\n"
                                              +" http://www.androidexample.com/media/uploads/"
                                              +uploadFileName;
                                 
                                messageText.setText(msg);
                                Toast.makeText(UploadToServer.this, "File Upload Complete.",
                                             Toast.LENGTH_SHORT).show();
                            }
                        });               
                   }   
                    
                   //close the streams //
                   fileInputStream.close();
                   dos.flush();
                   dos.close();
                     
              } catch (MalformedURLException ex) {
                   
                  dialog.dismiss(); 
                  ex.printStackTrace();
                   
                  runOnUiThread(new Runnable() {
                      public void run() {
                          messageText.setText("MalformedURLException Exception : check script url.");
                          Toast.makeText(UploadToServer.this, "MalformedURLException",
                                                              Toast.LENGTH_SHORT).show();
                      }
                  });
                   
                  Log.e("Upload file to server", "error: " + ex.getMessage(), ex); 
              } catch (Exception e) {
                   
                  dialog.dismiss(); 
                  e.printStackTrace();
                   
                  runOnUiThread(new Runnable() {
                      public void run() {
                          messageText.setText("Got Exception : see logcat ");
                          Toast.makeText(UploadToServer.this, "Got Exception : see logcat ",
                                  Toast.LENGTH_SHORT).show();
                      }
                  });
                  Log.e("Upload file to server Exception", "Exception : "
                                                   + e.getMessage(), e); 
              }
              dialog.dismiss();      
              return serverResponseCode;
               
           } // End else block
         }
}

Php script at server :

 File : UploadToServer.php


<?php
  
    $file_path = "uploads/";
     
    $file_path = $file_path . basename( $_FILES['uploaded_file']['name']);
    if(move_uploaded_file($_FILES['uploaded_file']['tmp_name'], $file_path)) {
        echo "success";
    } else{
        echo "fail";
    }
 ?>

Show uploaded image at server :


Showing_uploaded_file_at_server

Check apk file in phone  :

UploadToServer.apk
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