获取android中动态单选按钮的文本

Question

我试图弄清楚如何在 android 上获取所选动态创建的单选按钮的文本。我被卡住了，需要在 stackoverflow 社区寻求帮助。

我也想当我只按下按钮时它会烤文本。

希望有人能指出正确的方向。

谢谢

MainActivity.java

public class MainActivity extends AppCompatActivity implements View.OnClickListener{

    Button btnPress1,btnPress2;

    String names[] = {"Braces Adjustment","Tooth Extraction","Cleaning"};
    RadioButton r1;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        btnPress1 = (Button) findViewById(R.id.btnPress1);
        btnPress2 = (Button) findViewById(R.id.btnPress2);

        LinearLayout l = (LinearLayout) findViewById(R.id.linearLayout);
        RadioGroup r = new RadioGroup(this);
        r.setOrientation(RadioGroup.VERTICAL);
        RadioGroup.LayoutParams rl;

        //This is where i generate a dynamic radio button
        for(int i=0; i<names.length;i++){
            r1= new RadioButton(this);
            r1.setId(i + 1);
            r1.setText(names[i]);
            r1.setButtonDrawable(R.drawable.custom_radio_button);
            r1.setPadding(10,10,10,10);

            r1.setGravity(Gravity.CENTER_VERTICAL);
            rl=new RadioGroup.LayoutParams(RadioGroup.LayoutParams.MATCH_PARENT,RadioGroup.LayoutParams.MATCH_PARENT);
            rl.setMargins(10,15,0,0);
            r.addView(r1,rl);
        }
        l.addView(r);

    }



@Override
    public void onClick(View view) {

        switch (view.getId()){
            case R.id.btnPress1:
                //Toast here the text of radio button i selected but when i press the button
                Toast.makeText(MainActivity.this,"BUTTON1",Toast.LENGTH_SHORT).show();
                break;
            case R.id.btnPress2:
                //Toast here the text of radio button i selected but when i press the button
                Toast.makeText(MainActivity.this,"BUTTON2",Toast.LENGTH_SHORT).show();
                break;
        }
    }

Answer 1

将RadioGroup r 更改为private RadioGroup r。 （可以放在Button btnPress1,btnPress2;下）

在onClick() -> switch -> case

int checkedRadioButtonId = r.getCheckedRadioButtonId();
RadioButton radioButton = findViewById(checkedRadioButtonId);
String text = radioButton.getText();

Answer 2

将您的RadioGroup 设为字段：

private RadioGroup radioGroup;

在onCreate 中分配您创建的 RadioGroup：

radioGroup = new RadioGroup(this);

获取选中的单选按钮：

// get the checked radiobutton id from the radio group
int radioButtonID = radioButtonGroup.getCheckedRadioButtonId();

// get the radiobutton
RadioButton radioButton = radioButtonGroup.findViewById(radioButtonID);

要获取RadioButton 的文本，请调用：

radioButton.getText();