Question

我有Radiogroup并且里面有两个单选按钮。但是我无法获得两个单选按钮的字符串值。

这是我的代码： -

public  void checkFieldsForEmptyValue(){
        phonenumber=phone_number.getText().toString();
        String password=Password.getText().toString();
        RadioGroup radioGroup=(RadioGroup) findViewById(R.id.rg_lgoinscreen);
        RadioButton radioButton_student=(RadioButton)findViewById(R.id.Radio_button_student);
        RadioButton radioButton_teacher=(RadioButton)findViewById(R.id.Radio_button_teacher);
        String radio_button_student=Integer.toString(radioButton_student.getId());

        if(phonenumber.length() > 0 && password.length() > 0 && radio_button_student.length()>0)
        {
            Toast.makeText(this, "Else working", Toast.LENGTH_LONG).show();
         login.setEnabled(true);
        }

这是XML文件

<RadioGroup
        android:id="@+id/rg_lgoinscreen"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="10dp"
        android:layout_margin="1dp"
        android:layout_below="@id/login_password"
        android:orientation="horizontal"
        >
        <RadioButton
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:buttonTint="@color/white"
            android:text="Student"
            android:textColor="@color/white"
            android:id="@+id/Radio_button_student"
            android:layout_marginLeft="19dp"/>
        <RadioButton
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="50dp"
            android:buttonTint="@color/white"
            android:text="Teacher"
            android:textColor="@color/white"
            android:id="@+id/Radio_button_teacher"/>
    </RadioGroup>

Answer 1

我不知道你为什么要用

Integer.toString(radioButton_student.getId())

你只需要单选按钮然后使用它：

radioButton_student.getText()

如果您需要检查radioButton是否已选中，请使用：

radioButton_student.isChecked()

Answer 2

使用此代码

public  void checkFieldsForEmptyValue(){
    phonenumber=phone_number.getText().toString();
    String password=Password.getText().toString();
    RadioGroup radioGroup=(RadioGroup) findViewById(R.id.rg_lgoinscreen);
    RadioButton radioButton_student=(RadioButton)findViewById(R.id.Radio_button_student);
    RadioButton radioButton_teacher=(RadioButton)findViewById(R.id.Radio_button_teacher);

` int selectedId = radioGroup.getCheckedRadioButtonId();
  radioButton = (RadioButton) findViewById(selectedId);
   String radio_button_student=Integer.toString(radioButton.getText());

    if(phonenumber.length() > 0 && password.length() > 0 && radio_button_student.length()>0)
    {
        Toast.makeText(this, "Else working", Toast.LENGTH_LONG).show();
     login.setEnabled(true);
    }

如何获取RadioButton的字符串值。

2 个答案: