如何根据所点击的单选按钮来检索数值？

huangapple
go评论94阅读模式
英文:

How can I retrieve a numerical value depending on which radioButton is clicked in this scenario?

问题

  1. @Override
  2. protected void onCreate(Bundle savedInstanceState) {
  3.     super.onCreate(savedInstanceState);
  4.     setContentView(R.layout.prompts);
  6.     radioGroup = (RadioGroup) findViewById(R.id.radioGroup1);
  7.     radioGroup.clearCheck();
  9.     radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
  10.         @Override
  11.         public void onCheckedChanged(RadioGroup group, int checkedId) {
  12.             RadioButton rb = (RadioButton) group.findViewById(checkedId);
  13.             if (null != rb && checkedId > -1) {
  14.                 int buttonIndex = Integer.parseInt(rb.getTag().toString());
  15.                 Toast.makeText(MainActivity.this, String.valueOf(buttonIndex), Toast.LENGTH_SHORT).show();
  16.             }
  17.         }
  18.     });
  19. }
英文: 
  1. @Override
  2. protected void onCreate(Bundle savedInstanceState) {
  3.     super.onCreate(savedInstanceState);
  4.     setContentView(R.layout.prompts);
  7.     radioGroup = (RadioGroup) findViewById(R.id.radioGroup1);
  8.     radioGroup.clearCheck();
  11.     radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
  12.         @Override
  13.         public void onCheckedChanged(RadioGroup group, int checkedId) {
  14.             RadioButton rb = (RadioButton) group.findViewById(checkedId);
  15.             if(null!=rb && checkedId > -1){
  16.                 Toast.makeText(MainActivity.this, rb.getText(), Toast.LENGTH_SHORT).show();
  17.             }
  19.         }
  20.     });
  21. }

Currently the toast will show whatever text is associated with the specific button. I have a stack of 6 buttons and would like instead to retrive an integer from 0-5 depending on which button is clicked

答案1

得分: 0

尝试这个：

  1. int btnCheck;
  2. radioGroup.setOnCheckedChangeListener(new OnCheckedChangeListener() {
  4.  public void onCheckedChanged(RadioGroup group, int checkedId) {
  5.   switch(checkedId){
  6.     case R.id.radio1:
  7.                 btnCheck=0;
  8.                 break;
  9.     case R.id.radio2:
  10.                 btnCheck=1;
  11.                 break;
  12.     case R.id.radio3:
  13.                 btnCheck=2;
  14.                 break;
  15.      }
  16. }
英文:

Try this:

  1. int btnCheck;
  2. radioGroup.setOnCheckedChangeListener(new OnCheckedChangeListener() {
  4.  public void onCheckedChanged(RadioGroup group, int checkedId) {
  5.   switch(checkedId){
  6.     case R.id.radio1:
  7.                 btnCheck=0;
  8.                 break;
  9.     case R.id.radio2:
  10.                 btnCheck=1;
  11.                 break;
  12.     case R.id.radio2:
  13.                 btnCheck=2;
  14.                 break;
  15.      }
  16. }

huangapple
  • 本文由 发表于 2020年4月7日 04:15:46
  • 转载请务必保留本文链接：https://go.coder-hub.com/61068226.html
  • android
  • java
  • radio-button
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