[英]Changing the value of String in Switch statement in Java
我正在尝试在Android的switch语句中更改String数据类型的值。 而且该String是在声明switch语句的同一方法内声明的,当用户单击单选按钮时,我需要更改String的值 。
public void CreateQuestion(View view) {
String questionType = new String();
RadioGroup questionTypeRadioGroup = (RadioGroup) findViewById(R.id.questionTypeRadioGroup);
questionTypeRadioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, @IdRes int checkedId) {
switch (checkedId) {
case R.id.true_false:
questionType = "True/False";
break;
case R.id.mcqs:
questionType = "MCQs";
break;
}
}
});
}
你应该全局声明你的字符串
public class ExampleActivity extends AppCompatActivity {
public String questionType;
....
public void CreateQuestion(View view) {
questionType = "";
questionTypeRadioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, @IdRes int checkedId) {
switch (checkedId) {
case R.id.true_false:
questionType = "True/False";
break;
case R.id.mcqs:
questionType = "MCQs";
break;
}
}
});
}
....
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.