如何进行下一步按钮操作?-移动开发问题

How to do the next button action?(如何进行下一步按钮操作?)

本文介绍了如何进行下一步按钮操作?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

在显示下一个问题时，我在下一个"按钮中遇到问题.

在我第一次设置文本时，我得到了正确的问题并匹配了四个选项答案.我需要的是.

我有一个下一步"按钮，用于显示下一个问题和答案.当我单击下一个按钮时，我可以获得下一个问题的下四个选项.但是我点击next四次后无法得到下一个问题，它显示下一个问题，但答案是正确的.

我做错了什么?我错过了什么?

任何帮助将不胜感激.

<块引用>

 protected String doInBackground(String... Args) {列出<NameValuePair>params = new ArrayList<NameValuePair>();System.out.println("酷");params.add(new BasicNameValuePair("tid", tid));json = jsonParser.makeHttpRequest(url_get_quesurl, "GET", 参数);System.out.println("得到的问题值");Log.d("所有组:", json.toString());System.out.println("问题");尝试 {int 成功 = json.getInt(TAG_SUCCESS);System.out.println("成功");如果(成功 == 1){System.out.println("成功");组 = json.getJSONArray(TAG_GROUP);System.out.println("结果成功++"+groups);for (int i = 0; i < groups.length();i++) {JSONObject c = groups.getJSONObject(i);字符串问题 = c.getString(TAG_QUES);System.out.println("正在检查::"+问题);ques1.add(问题)；字符串答案 = c.getString(TAG_ANSW);System.out.println("正在检查::"+answer);answ1.add(答案);}} 别的 {显示警报()；}} 捕捉(JSONException e){System.out.println("错误"+e.toString());}返回空值；}受保护的无效 onPostExecute(字符串 file_url){pDialog.dismiss();ques1=new ArrayList(new ArrayList(ques1));//j=0;TextView txtque = (TextView) findViewById(R.id.que_txt);txtque.setText(ques1.get(j));//这里我得到了问题//和单选按钮文本中的答案answ1=new ArrayList(new ArrayList(answ1));btn_practice1.setText(answ1.get(0));btn_practice2.setText(answ1.get(1));btn_practice3.setText(answ1.get(2));btn_practice4.setText(answ1.get(3));btn_practicerg.setOnCheckedChangeListener(new OnCheckedChangeListener() {@覆盖公共无效 onCheckedChanged(无线电组组，int checkId){RadioButton radioButton = (RadioButton) findViewById(checkedId);//Toast.makeText(Question.this, "" + radioButton.getText(), 2000).show();TextView txtRadio = (TextView) findViewById(R.id.rdtxt);txtRadio.setText("" + radioButton.getText());}});按钮 nextBtn = (Button) findViewById(R.id.nxt_btn);nextBtn.setOnClickListener(new Button.OnClickListener(){公共无效 onClick(查看 v){j++;TextView txtque = (TextView) findViewById(R.id.que_txt);txtque.setText(ques1.get(j));//这里我没有得到下一个问题//但我可以得到接下来的四个选项//单选按钮文本k++;btn_practice1.setText(answ1.get((k*4)+0));btn_practice2.setText(answ1.get((k*4)+1));btn_practice3.setText(answ1.get((k*4)+2));btn_practice4.setText(answ1.get((k*4)+3));}});Button previousbtn = (Button) findViewById(R.id.prv_btn);previousbtn.setOnClickListener(new Button.OnClickListener(){公共无效 onClick(查看 v){j——；TextView txtque = (TextView) findViewById(R.id.que_txt);txtque.setText(ques1.get(j));//这里我也没有得到敏感的问题//但我无法在其中获得四个选项//单选按钮文本k——；btn_practice1.setText(answ1.get((k*4)+0));btn_practice2.setText(answ1.get((k*4)+1));btn_practice3.setText(answ1.get((k*4)+2));btn_practice4.setText(answ1.get((k*4)+3));}});}

解决方案

我假设，您正在尝试在 next/previous 按钮单击上管理问题及其选项.

我在我的一个应用中实现了你想要的:

Step1@ 取一个 int count=0 全局定义.

Step2@ 最初调用活动时，第一个问题将与选项一起显示.

setValues(count);//这里我在 setValues 命名方法中为 textview 设置问题和选项.

Step3@ onClick of NextButton 检查条件如下:

if (count == question.size() - 1) {结束();休息;}别的 {计数++；设置值(计数)；}

Step4@ onClick of PreviousButton 检查条件如下:

if (count <= 0) {Toast.makeText(OnPurposeUPSQuesAcitivty.this, "第一条记录",Toast.LENGTH_SHORT).show();休息;} 别的 {数数 - ;设置值(计数)；}

您的 setValue 方法如下所示:

public void setValues(int j) {txtque.setText(ques1.get(j));btn_practice1.setText(answ1.get(j);btn_practice2.setText(answ1.get(j);btn_practice3.setText(answ1.get(j);btn_practice4.setText(answ1.get(j);}

...........

最后一点@ 在查看您的代码后，我没有发现您如何为选项设置值.

这个

<块引用>

btn_practice1.setText(answ1.get((k*4)+0));

你会解释上面的代码行吗，会更新我的答案，否则你可以按照我上面提到的步骤明智地使用我的解决方案.

I'm facing a problem in Next button while displaying the next question.

In my first time set text I'm getting the correct question and matched four option answers. What I needed is.

I have a Next button for displaying the next question and answers. When I click on next button I can get the next four options for next question. But I can't get next question after four times I click on next it shows next question, but answers are correct.

What I'm doing wrong? what I'm missing?

Any help would be appreciated.

    protected String doInBackground(String... Args) {
List<NameValuePair> params = new ArrayList<NameValuePair>();
    System.out.println("cool");
params.add(new BasicNameValuePair("tid", tid));
json = jsonParser.makeHttpRequest(url_get_quesurl, "GET", params);
System.out.println("ques value got");
Log.d("All Groups: ", json.toString());
    System.out.println("question");
try {
int success = json.getInt(TAG_SUCCESS);
System.out.println("Success");
if (success == 1) {
System.out.println("Success");
groups = json.getJSONArray(TAG_GROUP);
System.out.println("Result Success+++"+groups);
for (int i = 0; i < groups.length();i++) {
JSONObject c = groups.getJSONObject(i);
      String question = c.getString(TAG_QUES);
  System.out.println("Checking ::"+question);
ques1.add(question);
String answer = c.getString(TAG_ANSW);
System.out.println("Checking ::"+answer);
answ1.add(answer);
       }
    } else {
        showAlert();
    }
} catch (JSONException e) {
    System.out.println("Error "+e.toString());
}
return null;
     }  
     protected void onPostExecute(String file_url) {
     pDialog.dismiss();
     ques1=new ArrayList<String>(new ArrayList<String>(ques1));
        //  j=0;
        TextView txtque = (TextView) findViewById(R.id.que_txt); 
        txtque.setText(ques1.get(j));                      // here im getting the question
                                                 //   and answers in radiobutton text
        answ1=new ArrayList<String>(new ArrayList<String>(answ1));
        btn_practice1.setText(answ1.get(0));
        btn_practice2.setText(answ1.get(1));
        btn_practice3.setText(answ1.get(2));
        btn_practice4.setText(answ1.get(3));
        btn_practicerg.setOnCheckedChangeListener(new OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) { 
                RadioButton radioButton = (RadioButton) findViewById(checkedId);
               // Toast.makeText(Question.this, "" + radioButton.getText(), 2000).show(); 
                TextView txtRadio = (TextView) findViewById(R.id.rdtxt); 
                txtRadio.setText("" + radioButton.getText());
            }
});
    Button nextBtn = (Button) findViewById(R.id.nxt_btn);
    nextBtn.setOnClickListener(new Button.OnClickListener(){
      public void onClick(View v){  
      j++;
    TextView txtque = (TextView) findViewById(R.id.que_txt); 
    txtque.setText(ques1.get(j));              // here im not getting the next question
                                            //   but i can get the next four options in              
                                            //    radiobutton text
    k++;
    btn_practice1.setText(answ1.get((k*4)+0));
    btn_practice2.setText(answ1.get((k*4)+1));
    btn_practice3.setText(answ1.get((k*4)+2));
    btn_practice4.setText(answ1.get((k*4)+3));
     }
   });
    Button previousbtn = (Button) findViewById(R.id.prv_btn);
previousbtn.setOnClickListener(new Button.OnClickListener(){
public void onClick(View v){
j--;
TextView txtque = (TextView) findViewById(R.id.que_txt); 
txtque.setText(ques1.get(j));              // here also im not getting the perivous question
                                        //     but i cant get perivous four options in 
                                       //      radiobutton text
k--;
btn_practice1.setText(answ1.get((k*4)+0));
btn_practice2.setText(answ1.get((k*4)+1));
btn_practice3.setText(answ1.get((k*4)+2));
btn_practice4.setText(answ1.get((k*4)+3));
  }
});
  }

解决方案

I assume, you are trying to manage question and its options on next/previous buttons click.

I achieved in my one of app same as you want:

Step1@ take one int count=0 define globally.

Step2@ when activity is called initially first question will be display with options.

setValues(count); // here I am setting question and options to textview inside setValues named method.

Step3@ onClick of NextButton check condition something like below:

if (count == question.size() - 1) {
    finish();
    break;
} 

else {
count++;
setValues(count);
   }

Step4@ onClick of PreviousButton check condition something like below:

if (count <= 0) {
Toast.makeText(OnPurposeUPSQuesAcitivty.this, "First Record",Toast.LENGTH_SHORT).show();
break;
} else {
count--;
setValues(count);
}

Your setValue method something look like below:

public void setValues( int j) {
txtque.setText(ques1.get(j));            

btn_practice1.setText(answ1.get(j);
btn_practice2.setText(answ1.get(j);
btn_practice3.setText(answ1.get(j);
btn_practice4.setText(answ1.get(j);
}

...........

Last Point@ After review your code, I don't came across that how you are setting values to options.

this