如何设置新的标识中加入机器人在单选按钮的java文件？ [英] How to set the Id of new added radioButton in java file in android?

问题描述

我用一个for循环加在我看来单选按钮，现在我想设置一个唯一的ID为每个单选按钮。

I am adding RadioButtons in my view by using a for loop, now I want to set a unique ID for each RadioButton.

for (int item = 0; item < 5; item++) {
    child = new RadioButton(this);
    itemRadioGroup.addView(child);
    child.setId(item);
}

Toast.makeText(getApplicationContext(), 
        String.valueOf(child.getID()), Toast.LENGTH_SHORT).show();

欲设定的第一按钮的ID为1，第二个按钮为2，第三为3等。但是，当我尝试用吐司消息显示ID它显示了我一些垃圾值，而不是我的设置ID。如何设置ID是否正确？

I want to set the ID of first button as 1, second button as 2, third as 3 and so on. But when I try to display the ID with a Toast message it shows me some garbage value rather than my set ID. How can I set ID properly?

推荐答案

我想这是因为0不是一个整数，你赐按钮的ID为0，其中作为IDS只能是正整数..

I think it is because 0 is not a integer and your a giving an id of button as 0. where as the ids can only be positive integers..

  RadioButton child[]=new RadioButton[5];
  for (int item = 1; item <= 5; item++) {
 child[i]= new RadioButton(this);
 itemRadioGroup.addView(child[i]);
 child[i].setId(item);
 Toast.makeText(getApplicationContext(),child.getID()+ " ", Toast.LENGTH_SHORT).show();
 }
//gets the checked radiobuttons ids

for (int item = 1; item <= 5; item++) {
if(child[i].isChecked()){

 Toast.makeText(getApplicationContext(),child[i].getID()+ " ", Toast.LENGTH_SHORT).show();

 }
}

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