public class Change_Password extends Activity {


     public SharedPreferences prefs;
      private String prefName = "MyPref";
      private static final String TEXT_VALUE_KEY = "nothing";
  String passtemp="";





@Override
protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.change_password);


    Button btnCancel=(Button)findViewById(R.id.btnCancel);
    btnCancel.setOnClickListener(new OnClickListener() {

        public void onClick(View arg0) {

            finish();
        }
    });

    final EditText txtNewPassword=(EditText)findViewById(R.id.txtNewPassword);
    final EditText txtCurrentPassword=(EditText)findViewById(R.id.txtCurrentPassword);
    final EditText txtConfirmPassword=(EditText)findViewById(R.id.txtConfirmNewPassword);
    Button btnSave=(Button)findViewById(R.id.btnSave);
    btnSave.setOnClickListener(new OnClickListener() {

        public void onClick(View arg0) {
            prefs = getSharedPreferences(prefName, MODE_PRIVATE);
                 passtemp = prefs.getString(TEXT_VALUE_KEY, "nothing");
            if(txtConfirmPassword.getText().toString().equalsIgnoreCase("") |
                    txtCurrentPassword.getText().toString().equalsIgnoreCase("") |
                    txtCurrentPassword.getText().toString().equalsIgnoreCase(""))
                {
                    Toast.makeText(getBaseContext(),"Please Complete the Information", Toast.LENGTH_SHORT).show();
                }
                 else
                 if(!txtNewPassword.getText().toString().equalsIgnoreCase(txtConfirmPassword.getText().toString()))
                  {
                    Toast.makeText(getBaseContext(),
                    "These Passwords Don't Match !", Toast.LENGTH_SHORT).show();
                   }
                 else
                 if(!passtemp.equalsIgnoreCase(txtCurrentPassword.getText().toString()))
                    {
                         Toast.makeText(getBaseContext(),
                            "Current Password is Incorrect!", Toast.LENGTH_SHORT).show();
                     }
                   else
                    {
                     ///------- //---save the values in the EditText view to preferences---
                    prefs = getPreferences(MODE_PRIVATE);
                     SharedPreferences.Editor editor = prefs.edit();
                     editor.putString(TEXT_VALUE_KEY, txtNewPassword.getText().toString());
                     //---saves the values---
                        editor.commit();
                     ///--------
                      //Password=txtNewPassword.getText().toString();
                      Toast.makeText(getBaseContext(),
                              Password, Toast.LENGTH_SHORT).show();
                      }

                 }
           });

}

@Override
public void onAttachedToWindow() {
   this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);
  super.onAttachedToWindow();


}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
   if(keyCode == KeyEvent.KEYCODE_HOME)

       BackToMainIntent();

 else if(keyCode==KeyEvent.KEYCODE_BACK)
   {
     BackToMainIntent();
  }
   return false;
}



public void BackToMainIntent()
{
    Intent intent = new Intent(this, Main.class);
       intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
       startActivity(intent);
  }
}