Android:AES app

MainActivity.java

package wei.aes;

import wei.aes.R;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends Activity  {
EditText et1,et2;
Button btn1,btn2;
String encrypt,decrypt;


@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findviews();


}

private void findviews(){
et1=(EditText)findViewById(R.id.et1);
et2=(EditText)findViewById(R.id.et2);
btn1=(Button)findViewById(R.id.btn1);
btn2=(Button)findViewById(R.id.btn2);
btn1.setOnClickListener(listener);
btn2.setOnClickListener(listener);

}


OnClickListener listener=new OnClickListener() {

public void onClick(View v) {
// TODO Auto-generated method stub
if(v.getId()==R.id.btn1){
try{
String encrypted=et1.getText().toString();
encrypt= AES_function.encrypt(encrypted);

}catch(Exception e){


}
et2.setText(encrypt);
}

else if(v.getId()==R.id.btn2){

try{
 String decrypted=et2.getText().toString();
 decrypt=AES_function.decrypt(decrypted);
}catch(Exception e){

}

       et1.setText(decrypt);
}


}
};

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}

}

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AES_function.java

package wei.aes;

import javax.crypto.Cipher;

import javax.crypto.spec.SecretKeySpec;

import android.util.Base64;

public class AES_function {

private static String key = "1AF4567SD123TR67";

public static String encrypt(String input)

{

byte[] crypted = null;

try

{

SecretKeySpec skey = new SecretKeySpec(key.getBytes(), "AES");

Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");

cipher.init(Cipher.ENCRYPT_MODE, skey);

crypted = cipher.doFinal(input.getBytes());

}

catch(Exception e)

{

System.out.println(e.toString());

}

return new String(Base64.encode(crypted,Base64.DEFAULT));

}

public static String decrypt(String input) 

{

byte[] output = null;

try 

{

SecretKeySpec skey = new SecretKeySpec(key.getBytes(), "AES");

Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");

cipher.init(Cipher.DECRYPT_MODE, skey);

output = cipher.doFinal(Base64.decode(input, Base64.DEFAULT));

} 

catch (Exception e) 

{

System.out.println(e.toString());

}

return new String(output);

}

}