小编zob*_*ot1的帖子

我想解决这个错误

R无法解析为变量

我查了许多答案,但我找不到合适的答案; 我尝试了一切.任何人都可以帮助我吗？

我自动创建的主要活动.从以下三行开始显示错误case R.id.button1::

package de.vogella.android.temprature1;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.Toast;

public class Convert extends Activity {
    private EditText text;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        text = (EditText) findViewById(R.id.editText1);
    }

    // This method is called at button click because we assigned the name to the
    // "On Click property" of the button
    public void myClickHandler(View view) {
    switch (view.getId()) {
        case R.id.button1:
            RadioButton celsiusButton = (RadioButton) …