在滾動視圖中添加動態RadioButtons

我是android編程新手。我想在android應用程序內的滾動視圖內創建動態單選按鈕廣播組。收音機組只有以水平方式顯示的限制。但我想要的是一個像單選按鈕模式的矩陣。在滾動視圖中添加動態RadioButtons

下面的圖片會給你我想要達到什麼的線索第一張圖片就是我所能做到的。第二個圖像是我想要實現的。

與此相關的另一個挑戰是，當一個人檢查了所有其他的單選按鈕必須得到選中。（假設之後就被顯示在不同的無線電組。）

2016-08-19 Ramya BA

提供您擁有或想要實現的代碼或屏幕截圖，以便我們開始瞭解您的需求。 – SWAT

在此處顯示您的努力以獲得更好的幫助 – Vickyexpert

請檢查此鏈接： https://i-msdn.sec.s-msft.com/en-us/windows/uwp/controls-and-patterns/images/radio-button -groups.png 我想要這樣的東西。在此先感謝。 –

下面的函數所需要的功能： -

/** 
*Returns a linear layout containing radio buttons in nX2 matrix fashion 
* where n is Math.Ceil(iRadioBtnDs.size/2) 
* 
* @param iRadioBtnInfoDs Data Structure containing RadioBtnInformation.. 
*      Contains id and label of the radio buttons. 
* @param iIndexOfCurrentlyCheckedRbInRadioBtnInfoDs Currently checked radio button's index 
* 
* @return returns the linear layout containing the generated nX2 radio buttons. 
*/ 
public LinearLayout getLinearLayoutContainingRadioButtonInNX2MatrixFashion(Context iContext,ArrayList<DynamicRadioBtnDs> iRadioBtnInfoDs ,int iIndexOfCurrentlyCheckedRbInRadioBtnInfoDs){ 


    final ArrayList<DynamicRadioBtnDs> loanTypeRadioBtns  =  iRadioBtnInfoDs; 

    float halfOfRadioCount         =  (float) iRadioBtnInfoDs.size()/2; 

    int noOfRadioGroupsNeeded        =  (int) Math.ceil(halfOfRadioCount); 

    LinearLayout radioGrpParentLl       =  new LinearLayout(iContext); 
    LinearLayout.LayoutParams paramsRadioGrpParentLl   =  new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT); 
    radioGrpParentLl.setLayoutParams(paramsRadioGrpParentLl); 
    radioGrpParentLl.setOrientation(LinearLayout.VERTICAL); 

    for (int i = 0; i < noOfRadioGroupsNeeded; i++) { 

     final int indexOfCurrentRadioGrpInParentLl = i; 

     //Creating i th radio group... 

     final RadioGroup radioGroupCurrentInteration     =  new RadioGroup(iContext); 
     RadioGroup.LayoutParams paramsRadio   =  new RadioGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); 
     radioGroupCurrentInteration.setOrientation(RadioGroup.HORIZONTAL); 
     radioGroupCurrentInteration.setLayoutParams(paramsRadio); 

     //Creating 2*i th radio button... 
     //This will always be in the left... 

     RadioButton leftRadioButtonInCurrentRadioGroup = new RadioButton(iContext); 
     RadioGroup.LayoutParams paramsLeftRadioBtnInCurrentRadioGroup = new RadioGroup.LayoutParams(0, ViewGroup.LayoutParams.WRAP_CONTENT); 

     String leftRadionBtnLabel = loanTypeRadioBtns.get(2 * i).getLabel(); 
     leftRadioButtonInCurrentRadioGroup.setText(leftRadionBtnLabel); 
     leftRadioButtonInCurrentRadioGroup.setLayoutParams(paramsLeftRadioBtnInCurrentRadioGroup); 

     radioGroupCurrentInteration.addView(leftRadioButtonInCurrentRadioGroup); 
     paramsLeftRadioBtnInCurrentRadioGroup.weight = 1f; 
     leftRadioButtonInCurrentRadioGroup.setTypeface(Typeface.DEFAULT_BOLD); 

     class CustomCheckedChangeListener implements CompoundButton.OnCheckedChangeListener { 

      private int indexOfCurrentlyCheckedRbInRadioBtnInfoDs; 

      CustomCheckedChangeListener(int iIndexOfCurrentlyCheckedRbInRadioBtnInfoDs) { 
       indexOfCurrentlyCheckedRbInRadioBtnInfoDs  = iIndexOfCurrentlyCheckedRbInRadioBtnInfoDs; 
      } 

      @Override 
      public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { 
       if (isChecked) { 
        indexOfCurrentlyCheckedRbInRadioBtnInfoDs = indexOfCurrentRadioGrpInParentLl * 2; 
       } 
      } 
     } 

     CustomCheckedChangeListener checkChangedListenerForLeftRb = new CustomCheckedChangeListener(iIndexOfCurrentlyCheckedRbInRadioBtnInfoDs); 

     leftRadioButtonInCurrentRadioGroup.setOnCheckedChangeListener(checkChangedListenerForLeftRb); 



     //Right radio button may or may not be required.. 
     //(i+1) represents the level starting from 1.... 
     //For example i+1 is 5 means we are now in the 5th iteration 
     //ie 5th radio group... 

     //If we need right radio button, 
     //The size will be equal to no of radio groups*2 

     if((i+1)*2 <=loanTypeRadioBtns.size()) { 
      //The right radio group is needed 

      RadioButton rightRadioButtonInCurrentRadioGroup      = new RadioButton(iContext); 
      RadioGroup.LayoutParams paramsRightRadioBtnInCurrentRadioGroup  = new RadioGroup.LayoutParams(0, ViewGroup.LayoutParams.WRAP_CONTENT); 
      rightRadioButtonInCurrentRadioGroup.setLayoutParams(paramsLeftRadioBtnInCurrentRadioGroup); 
      paramsRightRadioBtnInCurrentRadioGroup.weight      = 1f; 
      rightRadioButtonInCurrentRadioGroup.setTypeface(Typeface.DEFAULT_BOLD); 
      String rightRadioBtnLabel           = loanTypeRadioBtns.get((2 * i) + 1).getLabel(); 
      rightRadioButtonInCurrentRadioGroup.setText(rightRadioBtnLabel); 
      radioGroupCurrentInteration.addView(rightRadioButtonInCurrentRadioGroup); 


      class CustomCheckedChangeListenerForRightRb implements CompoundButton.OnCheckedChangeListener { 

       private int indexOfCurrentlyCheckedRbInRadioBtnInfoDs; 

       CustomCheckedChangeListenerForRightRb(int iIndexOfCurrentlyCheckedRbInRadioBtnInfoDs) { 
        indexOfCurrentlyCheckedRbInRadioBtnInfoDs  = iIndexOfCurrentlyCheckedRbInRadioBtnInfoDs; 
       } 

       @Override 
       public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { 
        if (isChecked) { 
         indexOfCurrentlyCheckedRbInRadioBtnInfoDs = (indexOfCurrentRadioGrpInParentLl * 2)+1; 
        } 
       } 
      } 

      CustomCheckedChangeListenerForRightRb checkChangedListenerForRightRb = new CustomCheckedChangeListenerForRightRb(iIndexOfCurrentlyCheckedRbInRadioBtnInfoDs); 

      rightRadioButtonInCurrentRadioGroup.setOnCheckedChangeListener(checkChangedListenerForRightRb); 


     } 

     radioGroupCurrentInteration.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { 
      @Override 
      public void onCheckedChanged(RadioGroup group, int checkedId) { 

       RadioButton checkChangedRadioBtn = (RadioButton) group.findViewById(checkedId); 
       if (checkChangedRadioBtn.isChecked()) { 
        //Some radio button in currentradioGrpParentLl 
        //Radio group has been checked.... 
        LinearLayout loanEmiParentLl = (LinearLayout) group.getParent(); 
        for (int i = 0; i < loanEmiParentLl.getChildCount(); i++) { 
         RadioGroup childRadioGroupAtIndexI = (RadioGroup) loanEmiParentLl.getChildAt(i); 
         if (!childRadioGroupAtIndexI.equals(group)) { 
          //Means the current radio group is a sister radio group.... 
          //So clear checks... 
          childRadioGroupAtIndexI.setOnCheckedChangeListener(null); 
          childRadioGroupAtIndexI.clearCheck(); 
          childRadioGroupAtIndexI.setOnCheckedChangeListener(this); 

         } else { 
          //Current radio group... 
          //So do nothing... 
         } 
        } 
       } 
      } 
     }); 

     radioGrpParentLl.addView(radioGroupCurrentInteration); 
    } 

    return radioGrpParentLl; 

} 







public class DynamicRadioBtnDs { 

    DynamicRadioBtnDs(String iId,String iLabel){ 
     id  = iId; 
     label = iLabel; 
    } 

    private String id; 
    private String label; 


    public String getId() { 
     return id; 
    } 

    public void setId(String id) { 
     this.id = id; 
    } 

    public String getLabel() { 
     return label; 
    } 

    public void setLabel(String label) { 
     this.label = label; 
    } 
}

用戶可以改變DynamicRadioBtnDs爲String如果他們不打算處理單選按鈕的id。

來源

2016-08-26 06:31:56

謝謝，這對我有用。 –

您可以動態地添加任何意見滾動型爲如：

layoutInflater = LayoutInflater.from(this); 
layoutParam = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT, 1); 
layoutParam.setMargins(10, 0, 10, 10); 

for (int i = 0; i < 10; i++) {    
    View view = layoutInflater.inflate(R.layout.deals_style, null); 
    ((TextView) deals.findViewById(R.id.tv_product_name)) 
     .setText("my text") 

     layoutNewDeals.addView(deals, layoutParam); 
}

更換的TextView與單選按鈕。

你必須創建一個自定義佈局文件或運行時創建一個單選按鈕

來源

2016-08-19 10:36:47 arjunkn

在你的XML佈局

 <LinearLayout 
      android:id="@+id/linear1" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:layout_margin="10dp" 
      android:orientation="vertical"> 

      <RadioGroup 
       android:id="@+id/radiogroup" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:layout_centerHorizontal="true" 
       android:layout_centerVertical="true" 
       android:orientation="vertical" /> 
     </LinearLayout>

添加這一點，並在你的活動，你想有添加此您的單選按鈕

RadioGroup rg = (RadioGroup) findViewById(R.id.radiogroup); 
RadioButton[] rb = new RadioButton[items.size()]; 
for (int i = 0; i < items.size(); i++) { 
    rb[i] = new RadioButton(this); 
    rg.addView(rb[i]); 
    rb[i].setText(items.get(i).getName()); 
}

來源

2016-08-19 11:00:17

使用此

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content"> 

    <RadioGroup android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:orientation="vertical" 
     android:id="@+id/radioGroup"> 

    </RadioGroup> 
</LinearLayout>

您可以動態地添加單選按鈕，看起來像下面

RadioGroup radioGroup = (RadioGroup)findViewById(R.id.radioGroup); 
    for (int i=0;i<10,i++) { 
     RadioButton radioButton = new RadioButton(getBaseContext()); 
     radioGroup.addView(radioButton); 
    }

來源

2016-08-19 11:06:51 ugurcmk

這不會以矩陣方式顯示單選按鈕，請參閱更新後的問題。 –

在滾動視圖中添加動態RadioButtons

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