getting javax.crypto.BadPaddingException exception while decryption but i am using same padding method(ENCRYPTION_PADDING_PKCS7) for both enc and dec

- getting javax.crypto.BadPaddingException exception while decryption 

but i am using same padding method(ENCRYPTION_PADDING_PKCS7) in android

- i am using fingerprint authorization API to enrypt the password. i am

storing cipher IV in android preferrence and using same iv to decrpt the password

 ***cipher initlization***
<code>
private static boolean initCipher() {
//For encryption 
mCipher.init(Cipher.ENCRYPT_MODE, key);
mCipherIV = mCipher.getIV();
Log.e("SUNIL","finger::flag=="+flag+mCipherIV+"====="+key+"+"+mClientId+"+ 
"+mUsername+"-"+mContext);
setStringPreference(mContext, mClientId + mUsername,
FINGERPRINT_PREF_IV, new String(Base64.encode(mCipherIV, 
Base64.NO_WRAP)));

//for decryption
mCipherIV = Base64.decode(getStringPreference(mContext, mClientId + 
mUsername,
FINGERPRINT_PREF_IV), Base64.NO_WRAP);
IvParameterSpec ivspec = new IvParameterSpec(mCipherIV);
mCipher.init(Cipher.DECRYPT_MODE, key, ivspec);
 </code>

 ***ENCRYPTION & DEC PART***
  bytes = cryptoObject.getCipher()
.doFinal(Base64.decode(mClientSecret, Base64.NO_WRAP));

 ***SECRET KEY GEN***
private static SecretKey getSecretKey() {
mKeyStore.load(null);
key = (SecretKey) mKeyStore.getKey(mClientId, null);
return key;
}