小编MrJ*_*rJM的帖子

我正在用Knockoutjs设计一个测验.我想一次只显示一个问题.我正在考虑一个全局计数var,每次回答问题时都会加1.但是,我似乎无法找到一种方法来获得当时只有一个问题.我怎么能最好地接近这个？我是Knockoutjs的新手.我尝试了问题()[编号],但似乎没有用.

谢谢

JS

$(document).ready(function(){
function Answer(data) {
    this.answer = ko.observable(data.answer);
    this.correct = ko.observable(data.correct);
}

function Question(data){
    this.id = ko.observable(data.id);
    this.question = ko.observable(data.question);
    this.answers = ko.observableArray([]);
    var mappedAnswers = $.map(data.answers, function(item) {return new Answer(item) });
    this.answers(mappedAnswers);
}


function AnswerViewModel(){
    // Data
    var self = this;

    self.questions =  ko.observableArray([]);

    self.checkAnswer = function(item, event){
            if (item.juist() == true){
               $(event.currentTarget).css("background", "green");

            }else{
                $(event.currentTarget).css("background", "red");
            }
    }

    $.getJSON("../res/json/quiz.json", function(allData) {
        var mappedQuestions = $.map(allData.questions, function(item) {return new Question(item) });
        self.questions(mappedQuestions);
    });
}

ko.applyBindings(AnswerViewModel());
});

HTML …

对于 Android 应用程序，我想在使用 gradle 构建时混淆/加密服务器公钥。

现在我正在使用 Base64 进行混淆，但我需要 AES 作为额外的

task encryptKeys {
    doFirst {

        //Encrypt the server key


        // Load key
        byte[] key = new File('project/keys/server.crt.der').bytes

        // Encode key twice
        String encoded = key.encodeBase64().toString();
        encoded = encoded.bytes.encodeBase64().toString();

        //TODO AES ENCRYPTION HERE

        // Save key
        new File('project/src/main/assets/server.crt.der').bytes = encoded.getBytes()

稍后在运行时使用此密钥时，我会像这样解密它

public static String decrypt(byte[] cipherText) throws Exception{
      Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding", "BC");
      SecretKeySpec key = new SecretKeySpec(encryptionKey.getBytes("UTF-8"), "AES");
      cipher.init(Cipher.DECRYPT_MODE, key, new IvParameterSpec(IV.getBytes("UTF-8")));
      return new String(cipher.doFinal(cipherText),"UTF-8");
}

在 gradle 脚本中使用 AES …