用Radio Buttons设置一个变量

Question

我对编程非常陌生，并试图创建一个小的Android应用程序。我想根据按下的单选按钮将变量"stuff"设置为1或2。但它总是0。这是我的代码…我希望你能帮助我:

public class MainActivity extends ActionBarActivity {
//Radio Button
private int stufe;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    TextView textView2 = (TextView) findViewById(R.id.textView2);
    textView2.setText(String.valueOf(stufe));
}
public void onClick(View view){
    switch (view.getId()){
        case R.id.button1:
            RadioButton onebutton = (RadioButton) findViewById(R.id.radio_one);
            RadioButton twobutton = (RadioButton) findViewById(R.id.radio_two);
            if (onebutton.isChecked()){
                stufe = 1;
                onebutton.setChecked(true);
                twobutton.setChecked(false);
            } else {
                stufe = 2;
                onebutton.setChecked(false);
                twobutton.setChecked(true);
            }
        break;
    }
}

Answer 1

您只是在更改stufe值后忘记设置setText。

试试这个:

yourRadioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup radioGroup, int checkedId) {
                    switch (checkedId){
                        case R.id.radio_one:
                            stufe = 1;
                            break;
                        case R.id.radio_two:
                            stufe = 2;
                            break;
                        default:
                            break;
                    }
                    textView2.setText(String.valueOf(stufe));
            }
        });