Question

我一直在做一个Android测试，所有这些都是我主要工作的。当用户选择他们的答案时，他们会被重定向到结果屏幕，告诉他们有多少是对是错。我想在我的练习模式中添加一个新功能，它会向他们显示他们选择的答案以及正确的答案。但我只是好奇如何调用变量

TextView tv;
Button btnNext;
RadioGroup rg;
RadioButton rb1, rb2, rb3;
String question[] = {"This classes course number", "What is the name of the program we used to make apps", "Android is a Which kind of software?"};
String ans[] = {" 2250", "Android Studio", "Operating System"};
String opt[] = {"2230", "2240", "2250", "Dev Kit 2010", "Android Creation", "Android Studio", "Operating System", "Antivirus", "Application"};


int flag = 0;
public static int marks, correct, wrong;


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


    tv = (TextView) findViewById(R.id.tvque);
    btnNext = (Button) findViewById(R.id.buttonNext);
    rg = (RadioGroup) findViewById(R.id.radioGroup1);
    rb1 = (RadioButton) findViewById(R.id.radioButton1);
    rb2 = (RadioButton) findViewById(R.id.radioButton2);
    rb3 = (RadioButton) findViewById(R.id.radioButton3);

    tv.setText(question[flag]);
    rb1.setText(opt[0]);
    rb2.setText(opt[1]);
    rb3.setText(opt[2]);


    btnNext.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            RadioButton your_answers = (RadioButton) findViewById(rg.getCheckedRadioButtonId());
            String ansText = your_answers.getText().toString();

            marks = correct - wrong;

            if (ansText.equalsIgnoreCase(ans[flag])) {
                correct++;
            } else {
                wrong++;
            }
            flag++;
            if (flag < question.length) {
                tv.setText(question[flag]);
                rb1.setText(opt[flag * 3]);
                rb2.setText(opt[(flag * 3) + 1]);
                rb3.setText(opt[(flag * 3) + 2]);
            } else {
                marks = correct - wrong;
                Intent intent = new Intent(CSITSActivity.this, ResultsActivity.class);
                startActivity(intent);
            }

        }
    });
}

}

Answer 1

不确定这是否是您尝试做的，因为您的问题不是那么清楚，但如果您尝试将值从一个意图传递到另一个意图，您可以将所选答案放在一个数组中并将它们传递给新意图像这样：

String[] chosenAnswers = {"a","a","b"}
Intent startIntent = new Intent(this,ResultsActivity.class);
startIntent.putExtra("chosen", chosenAnswers); //"chosen" is a random tag that can be anything but is used to get back the value of the list in the new intent
this.startActivity(startIntent);

然后，从ResultsActivity.class中，您可以使用以下方法获取该数组的值：

Intent i = getIntent();
String[] chosenAnswers = i.getStringArrayExtra("chosen");

这也可以使用相同的方法使用ArrayList来完成，除非在新的intent使用中获取列表：

i.getStringArrayListExtr(chosen);

不确定这是否是你想要实现的目标，但希望它有所帮助。

在android中显示用户选择的答案

1 个答案: