如果在Android中解密过程中抛出了java.security.InvalidAlgorithmParameterException: Must specify IV for CBC mode.异常，这意味着在使用CBC模式进行解密时没有指定初始化向量(IV)。下面是一个解决方案的示例代码：

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;

public class DecryptUtil {
    public static String decrypt(String encryptedText, String key, String iv) throws Exception {
        byte[] encryptedData = android.util.Base64.decode(encryptedText, android.util.Base64.DEFAULT);
        byte[] keyBytes = key.getBytes("UTF-8");
        byte[] ivBytes = iv.getBytes("UTF-8");

        SecretKeySpec secretKeySpec = new SecretKeySpec(keyBytes, "AES");
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        IvParameterSpec ivParameterSpec = new IvParameterSpec(ivBytes);
        cipher.init(Cipher.DECRYPT_MODE, secretKeySpec, ivParameterSpec);
        byte[] decryptedBytes = cipher.doFinal(encryptedData);

        return new String(decryptedBytes, "UTF-8");
    }
}

使用示例：

try {
    String encryptedText = "your_encrypted_text";
    String key = "your_key";
    String iv = "your_iv";

    String decryptedText = DecryptUtil.decrypt(encryptedText, key, iv);
    System.out.println("Decrypted Text: " + decryptedText);
} catch (Exception e) {
    e.printStackTrace();
}

确保在调用Cipher.init()方法时，传递正确的密钥和初始化向量(IV)。