Ionic Tutorials

	List | Add | Remove | Get | Contains | Next | Data Structure
	---------------------|------|--------|------|----------|------|---------------
	ArrayList | O(1) | O(n) | O(1) | O(n) | O(1) | Array
	LinkedList | O(1) | O(1) | O(n) | O(n) | O(1) | Linked List
	CopyOnWriteArrayList | O(n) | O(n) | O(1) | O(n) | O(1) | Array
	Set | Add | Remove | Contains | Next | Size | Data Structure
	----------------------|----------|----------|----------|----------|------|-------------------------
	HashSet | O(1) | O(1) | O(1) | O(h/n) | O(1) | Hash Table
	LinkedHashSet | O(1) | O(1) | O(1) | O(1) | O(1) | Hash Table + Linked List
	EnumSet | O(1) | O(1) | O(1) | O(1) | O(1) | Bit Vector
	TreeSet | O(log n) | O(log n) | O(log n) | O(log n) | O(1) | Red-black tree
	CopyOnWriteArraySet | O(n) | O(n) | O(n) | O(1) | O(1) | Array
	ConcurrentSkipListSet | O(log n) | O(log n) | O(log n) | O(1) | O(n) | Skip List
	Queue | Offer | Peak | Poll | Remove | Size | Data Structure
	------------------------|----------|------|----------|--------|------|---------------
	PriorityQueue | O(log n) | O(1) | O(log n) | O(n) | O(1) | Priority Heap
	LinkedList | O(1) | O(1) | O(1) | O(1) | O(1) | Linked List
	ArrayDequeue | O(1) | O(1) | O(1) | O(n) | O(1) | Array
	ConcurrentLinkedQueue | O(1) | O(1) | O(1) | O(n) | O(n) | Linked List
	ArrayBlockingQueue | O(1) | O(1) | O(1) | O(n) | O(1) | Array
	PriorirityBlockingQueue | O(log n) | O(1) | O(log n) | O(n) | O(1) | Priority Heap
	SynchronousQueue | O(1) | O(1) | O(1) | O(n) | O(1) | None!
	DelayQueue | O(log n) | O(1) | O(log n) | O(n) | O(1) | Priority Heap
	LinkedBlockingQueue | O(1) | O(1) | O(1) | O(n) | O(1) | Linked List
	Map | Get | ContainsKey | Next | Data Structure
	----------------------|----------|-------------|----------|-------------------------
	HashMap | O(1) | O(1) | O(h / n) | Hash Table
	LinkedHashMap | O(1) | O(1) | O(1) | Hash Table + Linked List
	IdentityHashMap | O(1) | O(1) | O(h / n) | Array
	WeakHashMap | O(1) | O(1) | O(h / n) | Hash Table
	EnumMap | O(1) | O(1) | O(1) | Array
	TreeMap | O(log n) | O(log n) | O(log n) | Red-black tree
	ConcurrentHashMap | O(1) | O(1) | O(h / n) | Hash Tables
	ConcurrentSkipListMap | O(log n) | O(log n) | O(1) | Skip List

Hello friends,
I am once again with very interesting topic in ionic.

So my manager asked me to implement whats app like image change option.After searching allot  finally i implemented the below solution.

HTML Code:-

<input type="button" ngClick="loadImage()">


Angular JS Code :-


$scope.loadImage=function()
            {
                $ionicActionSheet.show({
                    buttons: [
                          { text: '<i class="icon ion-android-camera"></i> Camera' },
                          { text: '<i class="icon ion-android-image"></i> Gallery' }, //Index = 0
                      ],
                        destructiveText:'<i class="icon ion-android-cancel"></i> Cancel',
                                           destructiveButtonClicked: function () {
                                                      return true;
                                              },
                      titleText: 'Choose action',
                  buttonClicked: function(index) {
                       
                          switch(index)
                          {
                              case 0:
                              {
                                  window.plugins.toast.showShortBottom("Camera Selected",function(a){},function(b){});
                                  //Write logic for Camera
                              }
                               break; 
                              case 1:
                              {
                              window.plugins.toast.showShortBottom("Gallery Selected",function(a){},function(b){});
                                  //Write logic for Gallery
                              }
                              break;   
                          }
                          return true; //Close the model?
                      }
                  });
             

            }

Hi friends,here i am once again with one more interesting topic ,

public class AESAlgorithm {  
   
    private byte[] ivBytes;
 
    public String encrypt(String plainText,String sessionKey) throws Exception {
        SecretKeySpec secret = new SecretKeySpec(sessionKey.getBytes(), "AES");
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        cipher.init(Cipher.ENCRYPT_MODE, secret);
        AlgorithmParameters params = cipher.getParameters();
        ivBytes = params.getParameterSpec(IvParameterSpec.class).getIV();
        byte[] encryptedTextBytes = cipher.doFinal(plainText.getBytes("UTF-8"));
        return new String(Base64.encode(encryptedTextBytes));
    }

    public String decrypt(String encryptedText,String sessionKey) throws Exception
    {

        byte[] encryptedTextBytes = Base64.decode(encryptedText.getBytes());
        SecretKeySpec secret = new SecretKeySpec(sessionKey.getBytes(), "AES");

        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        cipher.init(Cipher.DECRYPT_MODE, secret, new IvParameterSpec(ivBytes));
   
        byte[] decryptedTextBytes = null;
        try {
            decryptedTextBytes = cipher.doFinal(encryptedTextBytes);
        } catch (Exception e) {
            e.printStackTrace();
        }

        return new String(decryptedTextBytes);
    }
public String generateSalt() {
        SecureRandom random = new SecureRandom();
        byte bytes[] = new byte[32];
        random.nextBytes(bytes);
        String s = new String(bytes);
        return s;
    }
    public static void main(String[] args) throws Exception
{
AESAlgorithm c=new AESAlgorithm();
String sessionKey=c.generateSalt();
String str="Ashish Shukla";
Strinf encryptedText=c.encrypt(str,sessionKey);
System.out.println("ENCRYPTED text ="+encryptedText);
System.out.println("ENCRYPTED text= "+c.decrypt(encryptedText,sessionKey));
}
}


Till then keep asking-:)
And provide your feedback in comment box.