我在setOnCheckedChangeListener和OnCheckedChangeListener下有紅線。該錯誤消息告訴我:多個標記在這條線 - OnCheckedChangedListener不能被解析爲一個類型 - 在類型RadioGroup中的方法setOnCheckedChangedListener(RadioGroup.OnCheckedChangeListener)不適用於參數(新OnCheckedChangeListener(){})錯誤:OnCheckedChangeListener無法解析爲類型
package com.lifematters;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.View;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;
public class Test1 extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.test1);
//define Navigation Image Buttons
final Button nextBtn = (Button) findViewById(R.id.btnNext);
RadioGroup radioGroup = (RadioGroup) findViewById(R.id.radioAnswers1);
radioGroup.setOnCheckedChangeListener(new OnCheckedChangeListener()
{
public void onCheckedChanged (RadioGroup group, int checkedId){
final RadioButton radioButton1 = (RadioButton) findViewById(R.id.radioA1);
final RadioButton radioButton2 = (RadioButton) findViewById(R.id.radioA2);
final RadioButton radioButton3 = (RadioButton) findViewById(R.id.radioA3);
final RadioButton radioButton4 = (RadioButton) findViewById(R.id.radioA4);
if (radioButton1.isChecked()) {
DisplayToast("No, not at all");
} else if (radioButton2.isChecked()) {
DisplayToast("On some days");
}else if (radioButton3.isChecked()) {
DisplayToast("On more than half the days");
}else {
DisplayToast("Nearly everyday");
}
}
});
}
}
按** ctrl + shift + o **在你的eclipse中導入類.. –