Question

我的问题是在尝试传递男性和女性

的值时在background.excute方法中发生的

name = (EditText) findViewById(R.id.NameTxt);
age = (EditText) findViewById(R.id.Agetext);
gender = (RadioGroup) findViewById(R.id.radio);

int id = gender.getCheckedRadioButtonId();

male = (RadioButton) findViewById(id);
female = (RadioButton) findViewById(id);
 public void INSERT (View v){

MainBackground mainBackground=new MainBackground(this,this);
mainBackground.execute(name.getText().toString(),age.getText().toString(),
male.getText().toString(),female.getText().toString());

，错误是：引起：java.lang.NullPointerException：尝试调用虚方法＆＃39; java.lang.CharSequence android.widget.RadioButton.getText（）＆＃39;在空对象引用上

Answer 1

你应该为每个单选按钮单独找到ViewById。

function getDistance(origin, destination) {
var distanceDuration = [];
..
distanceDuration[0] = results[j].distance.text;
distanceDuration[1] = results[j].duration.text;

return distanceDuration;
}

var addressElement = document.getElementById('address-autocomplete');


addressElement.addEventListener('change', function() {
    var origin = 'Kraków, Poland';
    var destination = addressElement.value;



  var distanceDuration = getDistance(origin, destination);
    console.log('distanceDuration: ',  typeof distanceDuration); // -> object
  console.log('distanceDuration: ',  distanceDuration);
  //console.log('distanceDuration: ',  distanceDuration[0]); // -> undefined
    ..

}, false);

你可以传递这样的值：

像这样：将男性和女性的值传递为布尔值。

 male = (RadioButton) findViewById(R.id.male);// give id to male radio button as male if not give and similarly female for female button
 female = (RadioButton) findViewById(R.id.female);

Answer 2

radio.getCheckedRadioButtonId（）;

仅返回Selected Radio按钮的引用

在AsyncTask执行方法

2 个答案: